WO2017018185A1

WO2017018185A1 - Information processing device and method, and program

Info

Publication number: WO2017018185A1
Application number: PCT/JP2016/070429
Authority: WO
Inventors: 悠介米山; 小林　誠司; 宏幸三田; 真一北園; 彰人関谷
Original assignee: ソニー株式会社
Priority date: 2015-07-24
Filing date: 2016-07-11
Publication date: 2017-02-02
Also published as: JP7042617B2; JPWO2017018185A1

Abstract

This technology pertains to an information processing device and method, and a program, which make it possible to suppress an increase in power consumption. This technology has a control unit which controls the supply of power to a receiving unit in a manner such that power is supplied when the receiving unit for receiving a wireless signal is operating. For example, this control unit controls the supply to the receiving unit of power that is supplied and extracted in a superimposed manner with a broadcast wave signal via a coaxial cable for transmitting the broadcast wave signal which is received through an antenna. This technology is applicable, for example, to an information processing device, a power supply control device, a signal transmission device, a signal receiving device, a signal transmitting/receiving device, a communication device, an electronic device, a computer, a program, a storage medium, a system, and the like.

Description

Information processing apparatus and method, and program

The present technology relates to an information processing apparatus and method, and a program, and more particularly, to an information processing apparatus and method that can suppress an increase in power consumption, and a program.

Conventionally, an antenna for communication is installed together with an antenna for receiving broadcast signals on the roof of a house, etc., and transmission of transmission signals and reception signals between the communication antenna and indoor communication devices is performed for receiving broadcast signals. There is a method of using a coaxial cable for transmitting a broadcast signal received by the antenna of the antenna to an indoor TV receiver or the like (see, for example, Patent Document 1).

Japanese Patent No. 4125545

However, in the case of this method, the power supply from the indoor to the roof was supposed only to the satellite broadcasting antenna. When installing receivers, communication devices, etc. on the roof, it is necessary to prepare a power source for driving these devices. However, if the power consumption of these devices increases, a larger-scale power supply will be realized. For this purpose, the cost of equipment and installation work may increase.

This technology has been proposed in view of such a situation, and aims to suppress an increase in power consumption.

An information processing apparatus according to an embodiment of the present technology is an information processing apparatus including a control unit that controls supply of the power to the reception unit so that power is supplied when the reception unit that receives a radio signal is driven.

The control unit can control supply of the extracted power supplied to the reception unit by being superimposed on the broadcast wave signal via a coaxial cable that transmits the broadcast wave signal received by the antenna. .

The control unit starts supplying the power to the receiving unit, causes the receiving unit to receive the radio signal, stores information obtained from the received radio signal in a storage unit, and When the notification that it is stored in the storage unit is acquired, the supply of the power to the receiving unit can be terminated.

The receiving unit may be further provided.

The control unit can control the supply of the electric power supplied, extracted, and stored in the power storage unit to the reception unit while being superimposed on the signal via the coaxial cable.

The control unit can prohibit the supply of the power to the receiving unit when the amount of power stored in the power storage unit is less than a predetermined threshold.

The control unit can further control power storage in the power storage unit of the extracted power supplied and superimposed on the signal via the coaxial cable.

The control unit can prohibit the storage of the electric power in the power storage unit when the power storage amount of the power storage unit is larger than a predetermined threshold.

The control unit can cause the power storage unit to store the electric power in a predetermined time period.

The power storage unit can be further provided.

The control unit can further control the supply of power to the transmission unit so that power is supplied when the transmission unit that transmits a radio signal is driven.

The control unit starts supplying the power to the transmission unit, causes the transmission unit to generate transmission information, causes the generated transmission information to be transmitted as the radio signal, and transmits the radio signal. When the notification is acquired, the supply of the power to the transmission unit can be terminated.

The transmitter can be further provided.

The control unit can further control the supply of power to the communication unit such that power is supplied when a communication unit that communicates with another communication device is driven.

The control unit starts supplying the power to the communication unit, and causes the communication unit to read the information from a storage unit that stores information obtained from the radio signal received by the reception unit. The supply of the power to the communication unit is terminated when the read information is supplied to the other communication device by the communication and a notification that the information has been supplied to the other communication device is acquired. Can do.

The communication unit can be further provided.

The storage unit may be further provided.

The receiving unit can receive the wireless signal in a frequency band including 925 MHz.

The information processing method of the present technology is an information processing method for controlling the supply of power to the reception unit so that the information processing apparatus supplies power when the reception unit that receives a radio signal is driven.

The program of the present technology is a program for causing a computer to function as a control unit that controls supply of the power to the reception unit so that power is supplied when the reception unit that receives a radio signal is driven. .

In the information processing apparatus and method and the program of the present technology, the supply of the power to the receiving unit is controlled so that the power is supplied when the receiving unit that receives the radio signal is driven.

This technology can process information. Moreover, according to this technique, the increase in power consumption can be suppressed.

It is a figure which shows the main structural examples of a position notification system. It is a figure explaining the example of the mode of a position notification. It is a figure which shows the main structural examples of a relay station. It is a figure which shows the main structural examples of a mixer. It is a figure explaining the example of a mode of signal mixing. It is a figure which shows the main structural examples of PF. It is a figure which shows the main structural examples of a power supply control apparatus. It is a figure which shows the main structural examples of a connection part. It is a figure which shows the main structural examples of a transmitter. It is a figure which shows the main structural examples of a super frame. It is a figure explaining the example of the signal in each part. It is a figure which shows the main structural examples of a high sensitivity receiver. It is a figure which shows the example of a received signal waveform. It is a figure explaining the example of the mode of an approximation of phase fluctuation. It is a figure which shows a decoding result. It is a figure which shows the main structural examples of a LTE modem. It is a flowchart explaining the example of the flow of control processing. It is a flowchart following FIG. 17 explaining the example of the flow of control processing. It is a flowchart explaining the example of the flow of a power supply control process. It is a figure which shows the other structural example of a relay station. It is a figure which shows the other structural example of a power supply control apparatus. It is a flowchart explaining the example of the flow of control processing. It is a flowchart explaining the example of the flow of a charge control process. It is a flowchart explaining the other example of the flow of a power supply control process. It is a figure which shows the further another structural example of a relay station. It is a figure which shows the main structural examples of a highly sensitive transceiver. It is a flowchart explaining the example of the flow of control processing. It is a flowchart explaining the further another example of the flow of a power supply control process. It is a figure which shows the further another structural example of a relay station. It is a figure which shows the main structural examples of an antitheft system. And FIG. 20 is a block diagram illustrating a main configuration example of a computer.

Hereinafter, modes for carrying out the present disclosure (hereinafter referred to as embodiments) will be described. The description will be given in the following order.
1. First embodiment (position notification system)
2. Second embodiment (power control device)
3. Third embodiment (relay station)
4). Fourth embodiment (relay station)
5). Fifth embodiment (signal transmission / reception system)

<1. First Embodiment>
<Location notification system>
<Signal transmission / reception system>
FIG. 1 is a diagram illustrating a main configuration example of a position notification system which is an embodiment of a signal transmission / reception system to which the present technology is applied. A position notification system 100 shown in FIG. 1 is a system in which a transmitter 101 notifies its own position.

The transmitter 101 transmits position information indicating its own position as a radio signal. The relay station 102 receives the radio signal, acquires the position information of the transmitter 101, and supplies the position information to the server 104 via the network 103. The server 104 manages position information for each transmitter 101. The terminal device 105 operated by a user who wants to know the position of the transmitter 101 accesses the server 104 via the network 103, acquires the position information of the transmitter 101, and displays it with map data, for example, The user is notified of the position of the transmitter 101.

The transmitter 101 is, for example, carried by a target person whose user wants to grasp the position. In the example of FIG. 1, the transmitter 101 is carried by an elderly person 110. The transmitter 101 can appropriately obtain its own position information (for example, latitude and longitude) by receiving a GNSS signal from a GNSS (Global Navigation Satellite System) satellite, for example. The transmitter 101 transmits the position information as a radio signal as appropriate. Therefore, the user can grasp the position of the elderly person 110 who is the position monitoring target by operating the terminal device 105 as described above.

Note that the position monitoring target is arbitrary. For example, it may be a child, an animal such as a dog or a cat, or a company employee. The transmitter 101 may be configured as a dedicated device, but may be incorporated into a portable information processing device such as a mobile phone or a smartphone, for example.

The network 103 is an arbitrary communication network, and may perform wired communication, wireless communication, or both of them. Further, the network 103 may be configured by a single communication network or may be configured by a plurality of communication networks. For example, communication conforming to the Internet, public telephone network, so-called 3G and 4G wireless mobile wide area networks, WAN (Wide Area Network), LAN (Local Area Network), Bluetooth (registered trademark) standards , Wireless communication network for near field communication such as NFC (Near Field Communication), infrared communication path, HDMI (High-Definition Multimedia Interface) and USB (Universal Serial Bus) standards The network 103 may include a communication network or a communication path of an arbitrary communication standard such as a wired communication network complying with the standard.

The server 104 and the terminal device 105 are information processing devices that process information. The server 104 and the terminal device 105 are communicably connected to the network 103, and can communicate with other communication devices connected to the network 103 via the network 103 to exchange information.

In such a position notification system 100, the number of transmitters 101, relay stations 102, servers 104, and terminal devices 105 is arbitrary and may be plural. For example, as shown in FIG. 2, it is assumed that the position notification system 100 has N relay stations 102 (N is an arbitrary natural number) installed at different positions (relay station 102-1 through relay station). 102-N).

The timing at which the transmitter 101 transmits a radio signal (position information) is arbitrary. For example, the transmitter 101 may periodically transmit a wireless signal, or may be transmitted when a predetermined event occurs (for example, when a predetermined distance is moved or a predetermined time is reached). You may make it do.

In this case, the radio signal transmitted from the transmitter 101 is received by the relay station 102 located near the transmitter 101. When the transmitter 101 transmits a radio signal from the communicable range 121 of the relay station 102-K (K is an integer of 1 ≦ K ≦ N), the relay station 102-K receives the radio signal and transmits it. The position information of the machine 101 is acquired, and the position information is supplied to the server 104 via the network 103 (position information is relayed).

When the elderly person 110 (transmitter 101) moves within the communicable range of another relay station 102 and the transmitter 101 transmits a radio signal, the relay station 102 relays the position information in the same manner. Therefore, as long as the elderly person 110 (transmitter 101) is located within the communicable range of any relay station 102, the user can grasp the position of the elderly person 110.

The server 104 manages the location information of the transmitter 101. When there are a plurality of transmitters 101, the server 104 manages position information for each transmitter 101. For example, the transmitter 101 transmits its identification information (ID) together with the position information. The server 104 stores and manages the positional information in association with the ID of the transmitter 101. Therefore, the server 104 can provide only the location information of the transmitter 101 requested by the user (terminal device 105). The server 104 can also manage users who are permitted to provide location information for each transmitter 101. That is, the server 104 can provide the position information of each transmitter 101 only to users who are permitted to acquire the position information of the transmitter 101.

Note that the server 104 may manage the position information of the transmitter 101 in association with information other than the ID of the transmitter 101. For example, the server 104 may store and manage the position information of the transmitter 101 in association with time information or the like. By doing so, the server 104 can manage and provide a history of position information of the transmitter 101.

The time information may be transmitted from the transmitter 101. For example, the transmitter 101 may transmit time information included in the GNSS signal together with the position information as a radio signal.

Further, the position information transmitted by the transmitter 101 may be information that can be managed as information indicating the position of the transmitter 101 in the server 104, and the content thereof is arbitrary. For example, the transmitter 101 may transmit a GNSS signal (or time information included in the GNSS signal) without obtaining position information from the GNSS signal. In that case, the relay station 102 or the server 104 may obtain the position information of the transmitter 101 using the GNSS signal or time information. Further, an information processing apparatus (such as a server) that obtains position information of the transmitter 101 using the GNSS signal or time information may be provided separately.

Further, for example, the position of the transmitter 101 may be obtained based on the installation position of the relay station 102 that receives a radio signal from the transmitter 101. For example, in the case of FIG. 2, the transmitter 101 is located within the communicable range 121 of the relay station 102. In such a case, the server 104 estimates that the transmitter 101 is located within the communicable range 121 of the relay station 102-K when the relay station 102-K relays, and manages that fact as position information. You may do it. That is, in this case, the position of the transmitter 101 is managed with the granularity of the number of relay stations 102 (the width of the communication range of each relay station 102). In this case, the transmitter 101 may transmit at least its own ID as a radio signal.

Further, for example, the distance between the relay station 102 and the transmitter 101 may be estimated from the radio field intensity of the radio signal received by the relay station 102, and the server 104 may manage the distance as position information. That is, the server 104 may manage the relay station 102 within which communicable range of the transmitter 101 and the distance between the relay station 102 and the transmitter 101. The estimation of the distance may be performed in the relay station 102, may be performed in the server 104, or may be performed by a dedicated information processing apparatus (server or the like) provided separately. Also good.

Further, for example, when the transmitter 101 is located in a portion where the communicable ranges of the plurality of relay stations 102 overlap, that is, when the radio signal transmitted by the transmitter 101 is relayed by the plurality of relay stations 102, a triangle The position of the transmitter 101 may be estimated using a method or the like. For example, the position estimation may be performed in the server 104 or may be performed by a dedicated information processing apparatus (such as a server) provided separately.

Any relay station 102 may be able to relay information of an arbitrary transmitter 101, or each relay station 102 may relay only information of the transmitter 101 corresponding to itself. May be. For example, information transmitted from a certain transmitter 101 may be relayed only by the relay station 102 owned or managed by the owner (or manager) of the transmitter 101. This owner (or manager) may include not only individuals but also businesses. By doing so, it is possible to avoid sharing the relay station 102 among a plurality of users, and it is possible to suppress a reduction in communication safety such as information leakage. Further, the number of usable relay stations 102 may be set according to the amount of the fee paid by the user. Thereby, the quality of the service provided according to the price can be differentiated.

<Relay station>
As described above, in a state where the transmitter 101 is located within the communicable range of any relay station 102, the server 104 can manage the position of the transmitter 101. In other words, when the position of the transmitter 101 is out of the communicable range of any relay station 102, the server 104 cannot manage the position. Therefore, the server 104 can manage the position of the transmitter 101 more accurately as the communication range network of the relay station 102 with the transmitter 101 becomes wider. Here, more accurate management means managing the position of the transmitter 101 in a wider range. In other words, in order to make the range in which the position of the transmitter 101 can be managed wider, the transmitter 101 and the relay station 102 can transmit and receive radio signals farther (communication of each relay station 102 is possible). A wider range is preferred). Moreover, since each relay station 102 is installed in a mutually different position, it is so preferable that there are many relay stations 102. FIG. Further, in consideration of usefulness, it is preferable to set a region where the transmitter 101 is more likely to be located as a communicable range of the relay station 102.

The installation position of the relay station 102 is arbitrary. However, as described above, in consideration of the number of installations, usefulness, and the like, for example, in a building such as a building, a condominium, or a house, a position monitoring target person (for example, an elderly person 110) carrying the transmitter 101 is located. It is suitable because there are many in urban areas where there is a high possibility and installation is easy. In particular, the home of the position monitoring target person is more preferable because the position monitoring target person is more likely to be located in the vicinity thereof. Further, in terms of securing the installation location, it is easier to obtain an agreement than when the location notification service provider establishes the location and installs the relay station 102 independently.

Further, for example, when the position monitoring target person (or user) purchases or borrows the relay station 102 and installs it, the position notification service provider does not install the relay station 102 independently. The load (cost) of the service provider can be reduced. That is, by doing in this way, more relay stations 102 can be installed at lower cost. As described above, as the position notification system 100, the larger the number of relay stations 102, the better the quality of service that can be provided, which is preferable. That is, a more useful system can be realized at a lower cost.

Note that, as described above, the installation location of the relay station 102 is arbitrary, and for example, it may be installed on a movable object (also referred to as a moving body) such as an automobile, a motorcycle, or a bicycle. That is, the position of the relay station 102 may be variable.

Hereinafter, a case where the relay station 102 is installed in the home (house) of the position monitoring target person will be described as an example. In general, when the relay station 102 is installed at a low position in a house such as indoors, there is a possibility that the performance of receiving a radio signal from the transmitter 101 may be reduced due to low ground clearance or obstacles. As described above, the wider communicable range of the relay station 102 is more preferable. Therefore, the relay station 102 is preferably installed as high as possible, for example, on the roof, in order to increase the communicable range.

For example, when the relay station 102 is installed on the roof, since there is generally no outlet for household power supply in the vicinity, for example, a power cable or the like is laid from a nearby power pole or indoor to power the relay station 102. Must be supplied. Thus, in order to newly lay the power cable, complicated work such as construction work is required. For this reason, not only the installation cost due to the power cable to be laid, but also the construction cost may increase, and the installation cost of the relay station 102 may increase significantly.

Therefore, as in the example shown in FIG. 3, the power supply of the relay station 102 is secured using the existing (laid) antenna cable.

In the case of the example of FIG. 3, the relay station 102 is installed on the roof of a building 130 that is the home (house) of the position monitoring target person. This building 130 may be a detached house, a building in which a store, an office, or the like occupies, or an apartment house such as an apartment or a condominium.

On the roof of this building 130, a terrestrial antenna 141, a satellite antenna 142, a mixer 143, an antenna cable 144 to an antenna cable 146, a power cable 148, and a relay station 102 are installed. The equipment installed on these roofs is also collectively referred to as rooftop equipment 131. A TV receiver 147 is installed indoors in the building 130.

The terrestrial antenna 141 is an antenna for receiving broadcast signals of terrestrial TV digital broadcasting. Broadcast signals received by the terrestrial antenna 141 are supplied to the mixer 143 via the antenna cable 144.

The satellite antenna 142 is an antenna for receiving broadcast signals of satellite broadcasting such as BS (Broadcasting Satellite) broadcasting and CS (Communications Satellite) broadcasting. Broadcast signals received by the satellite antenna 142 are supplied to the mixer 143 via the antenna cable 145. The satellite antenna 142 is driven using electric power supplied from the mixer 143 via the antenna cable 145.

The mixer 143 mixes the broadcast signal of the terrestrial TV digital broadcast supplied via the antenna cable 144 and the broadcast signal of the satellite broadcast supplied via the antenna cable 145, and uses the mixed signal (RF). Then, the signal is supplied to the indoor TV receiver 147 through the antenna cable 146. Further, the mixer 143 supplies power supplied from the indoor (for example, the TV receiver 147) via the antenna cable 146 to the satellite antenna 142 via the antenna cable 145, or relays via the power cable 148. 102.

The antenna cable 144 is a cable that is connected to the terrestrial antenna 141 and the mixer 143 and transmits a broadcast signal received by the terrestrial antenna 141 to the mixer 143.

The antenna cable 145 is a cable that is connected to the satellite antenna 142 and the mixer 143 and transmits a broadcast signal received by the satellite antenna 142 to the mixer 143. Further, the antenna cable 145 superimposes the power supplied from the mixer 143 on the broadcast signal and transmits it to the satellite antenna 142.

The antenna cable 146 is connected to the mixer 143 and the TV receiver 147, and the mixed signal of the broadcast signal received by the terrestrial antenna 141 and the broadcast signal received by the satellite antenna 142 is transmitted from the mixer 143 to the TV receiver. 147 is a cable to be transmitted. The antenna cable 146 transmits the power supplied from the TV receiver 147 to the mixer 143 by superimposing the power on the mixed signal.

The TV receiver 147 is a facility that is installed in a building 130, for example, and uses broadcast signals transmitted from the roof. For example, the TV receiver 147 demodulates a broadcast signal transmitted from the rooftop equipment 131 (mixer 143) via the antenna cable 146, and displays an image such as a broadcast program included in the broadcast signal. Or output audio. The TV receiver 147 is driven by a household power source supplied from an outlet installed indoors in the building 130, and a part of the electric power is transferred to the rooftop equipment 131 (mixed) via the antenna cable 146. 143). The equipment installed indoors in the building 130 may be anything as long as it uses a broadcast signal transmitted from the roof. For example, instead of the TV receiver 147, a set top box, a hard disk recorder, a router with a TV broadcast tuner, a computer, or the like may be installed indoors. Moreover, the number of apparatuses installed indoors in the building 130 is arbitrary and may be plural.

The antenna cables 144 to 146 are realized by, for example, coaxial cables. Of course, the antenna cables 144 to 146 may be cables other than the coaxial cable.

The power cable 148 is connected to the mixer 143 and the relay station 102 (power control device 151), and transmits the power supplied from the mixer 143 to the relay station 102 (power control device 151). The power cable 148 is realized by a coaxial cable, for example. Of course, the power cable 148 may be a cable other than the coaxial cable.

The relay station 102 is a device that receives a radio signal transmitted from the transmitter 101, acquires predetermined information included in the radio signal, and supplies the information to the server 104 via the network 103. As illustrated in FIG. 3, the relay station 102 includes a power supply control device 151, a high sensitivity receiver 152, a memory 153, and an LTE (Long Term Term Evolution) modem 154.

The high sensitivity receiver 152 uses the antenna 152A to receive a radio signal transmitted from the transmitter 101 with high sensitivity. The high sensitivity receiver 152 acquires information (for example, position information and ID of the transmitter 101) included in the wireless signal, and supplies the acquired information to the memory 153 for storage. Further, the high sensitivity receiver 152 can also receive the GNSS signal transmitted from the GNSS satellite 161 using the antenna 152B. The high sensitivity receiver 152 obtains its own position information from the received GNSS signal, and supplies the position information to the memory 153 for storage. The high sensitivity receiver 152 is driven by the power supplied from the power supply control device 151.

The memory 153 is, for example, an arbitrary recording medium (storage medium) that can be written (rewritten) such as a RAM (Random Access Memory), an SSD (Solid State Drive), a semiconductor memory such as a flash memory, or a magnetic recording medium such as a hard disk. ). The memory 153 stores information supplied from the high sensitivity receiver 152 by the recording medium (storage medium). Further, the memory 153 reads information stored therein and supplies the information to the LTE modem 154 in response to a request from the LTE modem 154. The memory 153 is driven by electric power supplied from the power supply control device 151.

The LTE modem 154 reads information stored in the memory 153 and supplies the information to the server 104 via the network 103. The LTE modem 154 is connected to a base station (not shown) by wireless communication based on a communication standard called LTE, and is connected to the network 103 via the base station. LTE is a communication standard for mobile terminals such as mobile phones whose specifications are standardized by 3GPP (Third Generation Partnership Project). That is, the relay station 102 is connected to the network 103 which is a general (general purpose) communication network by the LTE modem 154. As a result, the relay station 102 can supply the information obtained from the transmitter 101 to the server 104 via the network 103 (that is, the information can be relayed). The LTE modem 154 is driven by power supplied from the power supply control device 151.

The power supply controller 151 supplies the power supplied via the TV receiver 147, the antenna cable 146, the mixer 143, and the power cable 148 to the high sensitivity receiver 152, the memory 153, and the LTE modem 154. The power supply control device 151 controls power supply to at least one of them. For example, the power supply controller 151 controls power supply to the high sensitivity receiver 152 and the LTE modem 154.

For example, the power supply control device 151 starts supplying power to the high-sensitivity receiver 152 to drive the high-sensitivity receiver 152 and execute the operation described above. Further, for example, upon receiving a notification from the high sensitivity receiver 152 that the desired processing has been completed, the power supply control device 151 ends the supply of power and ends the driving of the high sensitivity receiver 152.

Further, for example, the power supply control device 151 starts supplying power to the LTE modem 154, thereby driving the LTE modem 154 to execute the operation as described above. Further, for example, when receiving a notification that the desired processing is completed from the LTE modem 154, the power supply control device 151 ends the supply of power and ends the driving of the LTE modem 154.

In this way, the power supply control device 151 restricts the power supply to the high sensitivity receiver 152 and the LTE modem 154 only when driving them, so that the power supply control device 151 allows the high sensitivity receiver 152 and the LTE modem 154 to operate. An increase in power consumption of the modem 154 (that is, the relay station 102) can be suppressed.

<Easy installation using existing equipment>
Of the configuration of the rooftop equipment 131 shown in FIG. 3, the terrestrial antenna 141, the satellite antenna 142, and the antenna cables 144 to 146 are existing (installed) equipment. That is, the relay station 102 is connected to the existing equipment via the mixer 143 and the power cable 148, and is supplied with electric power from the inside using the existing equipment. That is, in this case, the power supply of the relay station 102 can be secured only by installing the mixer 143 and the power cable 148. Therefore, it is installed more easily than when a dedicated power cable is laid from the indoor etc. to the relay station 102 on the roof (suppressing the increase in facility cost and the increase in construction difficulty and work amount) Increase in construction cost). That is, the installation of the building 130 on a high place such as the roof of the relay station 102 can be facilitated.

<Power consumption control>
However, the amount of power supplied via the antenna cable 146 (for example, a coaxial cable) is finite and is generally not so large. For example, the voltage is DC 15 (V) and the current is about 0.5 (A). Therefore, when the power consumption of the high sensitivity receiver 152 or the LTE modem increases, there is a possibility that the power supply is insufficient.

Therefore, the power supply control device 151 controls the supply of power to the high sensitivity receiver 152 so that power is supplied when the high sensitivity receiver 152 is driven. Further, the power supply control device 151 may control the supply of power to the LTE modem 154 so that power is supplied when the LTE modem 154 is driven. Further, the power supply control device 151 controls the supply of power to each of the high sensitivity receiver 152 and the LTE modem 154 so that power is supplied when each of the high sensitivity receiver 152 and the LTE modem 154 is driven. You may do it.

Since the transmitter 101 does not always transmit a radio signal, the high sensitivity receiver 152 and the LTE modem 154 may not always need to be driven. For example, when the transmitter 101 intermittently transmits a radio signal, if the transmission timing is known, the high sensitivity receiver 152 does not need to be driven in a period other than the reception timing corresponding to the transmission timing. There may be cases. And it is not necessary to drive the LTE modem 154 until the high sensitivity receiver 152 receives the radio signal. In addition, for example, when the use of the transmitter 101 is interrupted at night or the like, it may not be necessary to drive the high-sensitivity receiver 152 or the LTE modem 154 during that period. In addition, the high sensitivity receiver 152 and the LTE modem 154 may be intermittently driven regardless of the transmission timing of the radio signal by the transmitter 101. For example, it is not necessary to receive all the wireless signals transmitted by the transmitter 101 (for example, when the transmitter 101 repeatedly transmits the same information or when there is no problem even if some information is lost). It is possible.

Therefore, by doing so, the relay station 102 suppresses the supply of power to them at unnecessary timing when the high sensitivity receiver 152 and the LTE modem 154 are not driven, thereby reducing the power consumption of the relay station 102. The increase can be suppressed. Thereby, the relay station 102 can suppress the occurrence of power shortage and realize more stable power supply.

For example, as described above, the power supplied to the high-sensitivity receiver 152 to the LTE modem 154 is transmitted via a coaxial cable that transmits a broadcast signal received by an antenna such as the terrestrial antenna 141 or the satellite antenna 142. May be supplied and extracted in a superimposed manner. That is, electric power may be supplied through existing equipment (antenna cable 146 such as a coaxial cable).

Even in such a case, the power supply control device 151 controls the supply of power to the high sensitivity receiver 152 and the LTE modem 154 as described above, so that the relay station 102 suppresses the occurrence of power shortage. More stable power supply can be realized. That is, the installation of the building 130 on a high place such as the roof of the relay station 102 can be facilitated.

<Mixer>
FIG. 4 is a diagram illustrating a main configuration example of the mixer 143. As shown in FIG. 4, the mixer 143 has four terminals (terminals 171 to 174). An antenna cable 144 is connected to the terminal 171, and a terrestrial TV broadcast broadcast signal (VHF (Very High Frequency) / UHF (Ultra High Frequency) signal) received by the terrestrial antenna 141 is input from the terminal 171. . An antenna cable 145 is connected to the terminal 174, and a broadcast signal (BS / CS signal) of BS broadcast or CS broadcast received by the satellite antenna 142 is input from the terminal 174. The power supplied from the TV receiver 147 extracted in the mixer 143 is superimposed on the BS / CS signal in the mixer 143 and output from the terminal 174.

The antenna cable 146 is connected to the terminal 172, and a mixed signal of the VHF / UHF signal and the BS / CS signal generated in the mixer 143 is output from the terminal 172. Further, the power supplied from the TV receiver 147 while being superimposed on the mixed signal is input from the terminal 172. A power cable 148 is connected to the terminal 173, and the power supplied from the TV receiver 147 extracted in the mixer 143 is output from the terminal 173.

The mixer 143 includes a low-pass filter (LPF (Low-Pass filter)) 181, a low-noise amplifier (LNA (Low-noise filter) 182), and a high-pass filter (HPF (High-Pass Filter)) 183. , A mixing unit 184, a power filter (PF (Power Filter)) 185, and a mixing unit 186.

The LPF 181 is a filter that allows a signal in a lower frequency band than a predetermined frequency to pass. For example, as indicated by a dotted line in FIG. 5, the LPF 181 includes a band (90 MHz to 222 MHz) in which a TV broadcast signal (VHS signal) in the VHF band (30 MHz to 300 MHz) is transmitted and a UHF band (300 MHz to 3000 MHz). Including a band (950 MHz to 2150 MHz) in which a BS / CS signal is transmitted by passing a signal in a low frequency band including a band (470 MHz to 770 MHz) in which a TV broadcast signal (UHF signal) is transmitted. Remove the signal in the high frequency band. The LPF 181 performs the above-described filtering process on the broadcast signal (VHF / UHF signal) input from the terminal 171 and supplies a signal from which unnecessary high-frequency components are removed to the LNA 182.

The LNA 182 amplifies the output signal (VHF / UHF signal) of the LPF 181 and supplies it to the mixing unit 184.

The HPF 183 is a filter that allows a signal in a frequency band higher than a predetermined frequency to pass. For example, as indicated by a dotted line in FIG. 5, the HPF 183 passes a signal in a high frequency band including a band (950 MHz to 2150 MHz) in which a BS / CS signal is transmitted, and a band in which a VHF / UHF signal is transmitted ( 90 MHz to 222 MHz and 470 MHz to 770 MHz) are removed. The HPF 183 performs the above-described filtering process on the broadcast signal (BS / CS signal) input from the terminal 174 and supplies the signal (BS / CS signal) from which unnecessary low-frequency components are removed to the mixing unit 184. .

The mixing unit 184 mixes the VHF / UHF signal supplied from the LNA 182 and the BS / CS signal supplied from the HPF 183 to generate a mixed signal. The mixing unit 184 outputs the mixed signal to the antenna cable 146 via the terminal 172. A predetermined voltage (DC component) is applied to the mixed signal by the TV receiver 147. That is, power is supplied from the TV receiver 147 to the mixer 143 by superimposing it on the mixed signal.

PF 185 performs a filtering process on the mixed signal on which the electric power is superimposed, and extracts the electric power. That is, the PF 185 extracts a DC component from the mixed signal. The PF 185 supplies the extracted power to the mixing unit 186. The mixing unit 186 superimposes the electric power on the BS / CS signal and outputs it to the antenna cable 145 via the terminal 174. That is, the mixing unit 186 applies a predetermined voltage (DC component) to the BS / CS signal. As a result, electric power is supplied to the satellite antenna 142. The satellite antenna 142 is driven by the electric power and receives satellite broadcast signals.

Also, the PF 185 outputs the extracted power to the power cable 148 via the terminal 173. Thereby, electric power is supplied also to the relay station 102 (power supply control apparatus 151).

<PF>
A main configuration example of the PF 185 is shown in FIG. As illustrated in FIG. 6, the PF 185 includes inductors 191 to 193 and capacitors 194 to 196. The inductors 191 to 193 are connected in series with each other. One of the inductors 191 is connected to the mixing unit 184 and the terminal 172, and the other is connected to the inductor 192. One of the inductors 192 is connected to the inductor 191 and the other is connected to the inductor 193. One of the inductors 193 is connected to the inductor 192, and the other is connected to the mixing unit 186 and the terminal 173.

One of the capacitors 194 is connected between the inductor 191 and the inductor 192, and the other is grounded. One of the capacitors 195 is connected between the inductor 192 and the inductor 193, and the other is grounded. One of the capacitors 196 is connected between the inductor 193 and the mixing unit 186 (terminal 173), and the other is grounded.

The PF 185 extracts the electric power (DC component) by performing filter processing using such an LC circuit, for example.

<Power control device>
FIG. 7 is a diagram illustrating a main configuration example of the power supply control device 151. As illustrated in FIG. 7, the power supply control device 151 includes power supply terminals 201 to 204. A mixer 143 is connected to the power terminal 201 (via a power cable 148). The electric power output from the terminal 173 of the mixer 143 is input to the power supply terminal 201 via the power supply cable 148. A high sensitivity receiver 152 is connected to the power terminal 202. The LTE modem 154 is connected to the power terminal 203. A memory 153 is connected to the power supply terminal 204. Although illustration is omitted, the power supply control device 151 can have other arbitrary terminals.

The power supply control device 151 includes a control unit 211 and a connection unit 212. The control unit 211 performs processing related to control of the connection unit 212. The power input from the power supply terminal 201 is supplied to the connection unit 212. The connection unit 212 selects the power supply destination from the power supply terminal 202 and the power supply terminal 203.

For example, the connection unit 212 outputs power input from the power supply terminal 201 from the power supply terminal 202 (supplied to the high sensitivity receiver 152) or output from the power supply terminal 203 (supplied to the LTE modem 154). Select whether to supply to either. That is, the connection unit 212 selects whether to connect the power terminal 201 to the power terminal 202 and whether to connect the power terminal 201 to the power terminal 203. The connection unit 212 performs such selection according to the control of the control unit 211.

The control unit 211 controls the connection unit 212 to start power supply to the power supply terminal 202 or the power supply terminal 203, for example, at a timing at which the high sensitivity receiver 152 or the LTE modem 154 is to be driven. The power supplied to the power terminal 202 is supplied to the high sensitivity receiver 152 via the power terminal 202. The high sensitivity receiver 152 is driven using the power. Similarly, the power supplied to the power supply terminal 203 is supplied to the LTE modem 154 via the power supply terminal 203. The LTE modem 154 is driven using the power.

Note that the execution timing of this control is arbitrary. For example, it may be a predetermined timing, a timing according to some event such as satisfying a predetermined operation condition, or from the outside such as the high sensitivity receiver 152 or the LTE modem 154 The timing may be based on the notification.

In addition, the control unit 211 controls the connection unit 212 to shut off the power supply to the power supply terminal 202 or the power supply terminal 203 and terminate the operation, for example, at a timing when the high sensitivity receiver 152 or the LTE modem 154 is not desired to be driven. . When the supply of power to the power supply terminal 202 is finished, the supply of power to the high sensitivity receiver 152 is also finished, so that the driving of the high sensitivity receiver 152 is finished. Similarly, when the supply of power to the power supply terminal 203 is finished, the supply of power to the LTE modem 154 is also finished, so that the driving of the LTE modem 154 is finished.

Note that the execution timing of this control is also arbitrary. For example, it may be a predetermined timing, a timing according to some event such as satisfying a predetermined operation condition, or from the outside such as the high sensitivity receiver 152 or the LTE modem 154 The timing may be based on the notification.

Further, the connection unit 212 may be able to supply power to both the power supply terminal 202 and the power supply terminal 203. However, the high sensitivity receiver 152 and the LTE modem 154 can be prevented from being driven simultaneously by making it possible to supply power only to either one (the power supply terminal 202 or the power supply terminal 203). The peak (maximum value) of power consumption can be suppressed. Therefore, the relay station 102 can suppress the occurrence of power shortage and realize more stable power supply.

Note that the power supplied to the connection unit 212 is also used to drive the connection unit 212. Further, the electric power input from the power supply terminal 201 is also supplied to the control unit 211 and used for driving the control unit 211. The power input from the power supply terminal 201 is also supplied to the power supply terminal 204, and is supplied to the memory 153 through the power supply terminal 204. The memory 153 is driven using this power.

The power supply to the memory 153 may be always performed as in the example of FIG. 7, or the power supply control device 151 (control) as in the case of the high sensitivity receiver 152 and the LTE modem 154. It may be controlled by the unit 211 and the connection unit 212).

<Connection part>
The configuration of the connection unit 212 is arbitrary. For example, as illustrated in FIG. 8A, the connection unit 212 may be configured by a switch 220 having one input and three outputs. The switch 220 includes a terminal 221 as an input-side terminal and terminals 222 to 224 as output-side terminals. The terminal 221 is connected to the power supply terminal 201. Terminal 222 is connected to power supply terminal 202. The terminal 223 is connected to the power supply terminal 203. The terminal 224 is not connected to any power supply terminal (opened).

The switch 220 connects the terminal 221 to one of the terminals 222 to 224 in accordance with the control of the control unit 211 via the control line 225. That is, the switch 220 selects a supply destination of power input via the power supply terminal 201 according to the control of the control unit 211. For example, when the terminal 221 is connected to the terminal 222, the power supply destination input via the power terminal 201 is the power terminal 202 (high sensitivity receiver 152). Further, for example, when the terminal 221 is connected to the terminal 223, the supply destination of power input via the power terminal 201 is the power terminal 203 (LTE modem 154). For example, when the terminal 221 is connected to the terminal 224, the power input via the power terminal 201 is not supplied to any power terminal (any device).

Further, for example, as shown in FIG. 8A, the connection unit 212 may be configured by one-input one-output switches (switch 230 and switch 240) for each power supply terminal on the output side. In this case, the switch 230 includes a terminal 231 as an input-side terminal and a terminal 232 as an output-side terminal. The terminal 231 is connected to the power supply terminal 201, and the terminal 232 is connected to the power supply terminal 202. The switch 230 connects or disconnects the terminal 231 and the terminal 232 according to the control of the control unit 211 via the control line 233. That is, the switch 230 selects whether to supply the power input via the power supply terminal 201 to the high sensitivity receiver 152 according to the control of the control unit 211.

The switch 240 has a terminal 241 as an input terminal, and a terminal 242 as an output terminal. The terminal 241 is connected to the power supply terminal 201, and the terminal 242 is connected to the power supply terminal 203. The switch 240 connects or disconnects the terminal 241 and the terminal 242 according to the control of the control unit 211 via the control line 243. That is, the switch 240 selects whether or not to supply power input via the power supply terminal 201 to the LTE modem 154 according to the control of the control unit 211.

For example, when the switch 230 connects the terminal 231 and the terminal 232 and the switch 240 disconnects the terminal 241 and the terminal 242, the supply destination of the power input via the power supply terminal 201 is the power supply It becomes the terminal 202 (high sensitivity receiver 152). Further, for example, when the terminal 230 and the terminal 232 are disconnected by the switch 230 and the terminal 241 and the terminal 242 are connected by the switch 240, the supply destination of the power input via the power supply terminal 201 is The power terminal 203 (LTE modem 154). For example, when the switch 230 disconnects the terminal 231 and the terminal 232 and the switch 240 disconnects the terminal 241 and the terminal 242, the power input via the power supply terminal 201 is It is not supplied to the power supply terminal (any device).

<Transmitter>
Next, transmission / reception of radio signals performed between the transmitter 101 and the high sensitivity receiver 152 will be described. Transmission / reception of a radio signal between the transmitter 101 and the high sensitivity receiver 152 is performed using a frequency band including 925 MHz (also referred to as a 920 MHz band).

FIG. 9 is a diagram illustrating a main configuration example of the transmitter 101. As illustrated in FIG. 9, the transmitter 101 includes a pseudo random number sequence generation unit 251, a carrier oscillation unit 252, a multiplication unit 253, a bandpass filter (BPF) 254, an amplification unit 255, and an antenna 256.

The information to be transmitted is encoded and transmitted as a pseudo random number sequence. The pseudo random number sequence generation unit 251 generates the pseudo random number sequence. The pseudo random number sequence generation unit 251 includes a transmission information generation unit 261, a CRC (Cyclic Redundancy Check) addition unit 262, a synchronization signal generation unit 263, a selection unit 264, a frame counter 265, a register 266, an interleaving unit 267, and a Gold code generation unit 268. , And a multiplication unit 269.

The transmission information generation unit 261 generates transmission information TM that is information to be transmitted as a radio signal. This transmission information TM is arbitrary information. For example, the transmission information generation unit 261 receives a GNSS signal from a GNSS satellite, generates position information (for example, latitude / longitude) indicating the current position of the transmitter 101 using the GNSS signal, and includes the position information. Information TM may be generated. Further, for example, the transmission information generation unit 261 may generate transmission information TM including a GNSS signal received from a GNSS satellite (or time information included in the GNSS signal). Further, for example, the transmission information generation unit 261 may generate the transmission information TM including the identification information (ID) of the transmitter 101. Further, for example, the transmission information generation unit 261 may acquire information from another device (for example, a sensor) and generate transmission information TM including the information. The transmitter 101 generates a transmission signal TX using the transmission information TM. The transmission information generating unit 261 supplies the generated transmission information TM to the CRC adding unit 262.

The CRC adding unit 262 adds a cyclic redundancy check code (CRC) for error detection to the transmission information TM supplied from the transmission information generating unit 261. Any cyclic redundancy check code may be used, and the data length is also arbitrary. The CRC adding unit 262 supplies the transmission signal TM to which the cyclic redundancy check code is added to the selection unit 264. The synchronization signal generator 263 generates a predetermined synchronization pattern. This synchronization pattern may be any type and the data length is also arbitrary. The synchronization signal generation unit 263 supplies the synchronization pattern to the selection unit 264. The selection unit 264 adds the synchronization pattern supplied from the synchronization signal generation unit 263 to the transmission information TM to which the cyclic redundancy check code supplied from the CRC addition unit 262 is added by appropriately selecting an input. That is, the selection unit 264 generates transmission information TM as a predetermined signal transmitted as a radio signal. The selection unit 264 supplies the transmission information TM to which the cyclic redundancy check code and the synchronization pattern are added to the register 266 for holding.

Transmitter 101 transmits a transmission signal TX using a radio wave of 920 MHz band. The 920 MHz band is a frequency band that has been lifted from July 2011 by the Ministry of Internal Affairs and Communications, and anyone can use it without a license. However, the maximum continuous transmission time is limited to 4 seconds by regulation (ARIB (Association of Radio Industries and Businesses) and STD T-108). If the continuous transmission time is further shortened to 0.2 seconds, for example, more channels can be allocated and transmission / reception can be performed with less interference.

Therefore, the transmitter 101 performs one data transmission, for example, in units of a super frame for a predetermined time as shown in FIG. The length of the predetermined time is arbitrary. For example, it may be 30 seconds or 5 minutes. Within this predetermined time, a frame of 0.192 seconds is repeated up to 100 times. That is, since the continuous transmission time is less than 0.2 seconds, many transmission channels can be assigned to this transmission. As a result, it becomes possible to select and transmit a relatively free channel, and to build a system that is more resistant to interference.

Note that the gap x between frames is a time of at least 2 ms. When using the 920 MHz band in Japan, carrier sense must be performed to confirm whether communication is performed in the band before signal transmission. A signal can be transmitted only when the band is free. Therefore, 920 MHz cannot always be used. Therefore, the gap x may differ every time depending on the result of carrier sense (that is, the degree of channel congestion). If 30 seconds are averaged, frames are transmitted at a rate of about once every 0.3 seconds. As a result, 100 frames are transmitted within a predetermined time of the super frame. The number of frames that can be transmitted varies slightly depending on the degree of channel congestion. The signals transmitted in 100 frames are arbitrary, but in the following description, they are all assumed to be the same.

Thus, in order to repeatedly transmit the same frame, the register 266 holds the transmission information TM to which the cyclic redundancy check code and the synchronization pattern are added, which is supplied from the selection unit 264. The register 266 then repeats the transmission information TM to which the cyclic redundancy check code and the synchronization pattern added are stored a predetermined number of times and supplies the transmission information TM to the interleaving unit 267.

At that time, the frame counter 265 repeats transmission of the transmission information TM to which the cyclic redundancy check code and the synchronization pattern are added, that is, the transmission to which the cyclic redundancy check code and the synchronization pattern are added, which is held in the register 266. Count the number of times the information TM has been read. The frame counter 265 supplies such a count value to the register 266. The register 266 grasps the number of times of supply based on the count value. When the register 266 repeats reading the transmission information TM to which the cyclic redundancy check code and the synchronization pattern are added a predetermined number of times (for example, 100 times), the register 266 discards the transmission information TM to which the cyclic redundancy check code and the synchronization pattern are added. Next, the transmission information TM to which the new cyclic redundancy check code and the synchronization pattern supplied from the selection unit 264 are added is acquired and held.

That is, the frame counter 265 indicates the number of times the transmission information TM to which the cyclic redundancy check code and the synchronization pattern are added is read up to the maximum number of frames transmitted in the superframe (100 times in the case of FIG. 10). Count (for example, the frame counter 265 starts counting from the count value 0 and counts until the count value reaches 99). When the count value reaches the maximum value (for example, 99), the count value is reset to the initial value (for example, 0).

FIG. 11 is a schematic diagram illustrating an example of a frame configuration (Frame format) of a transmission packet. As shown in the first row from the top of FIG. 11, the transmission packet includes a 2-octet preamble (Preamble), an 1-octet SFD (start-of-frame delimiter), and a 16-octet PSDU (PHY Service Data Unit). Consists of Here, the preamble and SFD are fixed data. Its value is arbitrary. For example, the preamble may be a bit string “0011111101011001”. The SFD may be a bit string of “00011100”, for example.

As shown in the second row from the top in FIG. 11, the 16-octet PSDU includes a frame control (FC), a sequence number (SN), a transceiver address (ADR), a payload (PAYLOAD), and a frame check sequence (FCS). ).

Frame control (FC) is digital information of 2 octets, and is information indicating the configuration of information and the number of bits following frame control. The frame control is an arbitrary fixed bit string, and may be a bit string of “0010000000100110”, for example. The sequence number (SN) is 1-octet digital information and is counted up each time new data is transmitted. By checking this sequence number, the receiver can determine whether or not the data is new. The transceiver address (ADR) is 4-octet information and includes a transmitter address number (transmitter ID) for identifying the transmitter 101. The payload (PAYLOAD) is 4-octet digital information, and the transmission information TM is set as it is. That is, the payload (PAYLOAD) is generated by the transmission information generation unit 261. The frame check sequence (FCS) is a 2-octet cyclic redundancy check code and is information for checking whether or not an error has occurred in communication data. This frame check sequence (FCS) is added by the CRC adding unit 22.

Here, information from the preamble to the transceiver address (ADR) is generated by the synchronization signal generator 263 as a synchronization pattern (SYNC). This 13-octet synchronization pattern (SYNC) is added by the selection unit 264.

In the register 266, a transmission packet having such a configuration is held as transmission information TM to which a cyclic redundancy check code and a synchronization pattern are added.

The interleaving unit 267 disassembles the synchronization pattern of the transmission information TM to which the cyclic redundancy check code and the synchronization pattern are added, and, as shown in the fourth row from the top in FIG. Disperse. This distribution is performed so that the synchronization pattern is distributed almost evenly.

In the case of the example of FIG. 11, as shown in the third row from the top, the synchronization pattern (SYNC) is information of 13 octets, and UND is information of 6 octets. The interleave unit 267 disassembles the 13-octet synchronization pattern (SYNC) by 1 octet, SYNC0 to SYNC12, disassembles 6-octet UND by 1 octet, and UND0 to UND5. They are rearranged in the order shown in the eyes (the following order).

SYNC0, SYNC1, UND0, SYNC2, SYNC3, UND1, ..., UND5, SYNC12

As described above, the synchronization pattern known to the high-sensitivity receiver 152 is distributed (distributed) over the entire frame, so that the high-sensitivity receiver 152 calculates the frequency and initial phase estimation of the transmission carrier for each short frame. Can be performed more accurately. As a result, even with a short continuous transmission time, the high sensitivity receiver 152 can receive with higher sensitivity.

FIG. 11 shows an example of the rearranged transmission information QD in the fifth row from the top. The interleaving unit 267 supplies the transmission information QD rearranged as described above to the multiplying unit 269. The Gold code generator 268 generates a pseudo random number sequence to be added to the transmission information QD. This pseudo-random number sequence may be anything, and its data length is also arbitrary. For example, the Gold code generation unit 268 may generate a bit string of a predetermined pattern having a length of 256 bits as a pseudo random number sequence. For example, the Gold code generator 268 may be configured with two M-sequence generators. The Gold code generation unit 268 supplies the generated pseudo random number sequence to the multiplication unit 269. The multiplication unit 269 multiplies the transmission information QD supplied from the interleaving unit 267 and the pseudo random number sequence supplied from the Gold code generation unit 268 to generate a pseudo random number sequence PN.

That is, the multiplication unit 269 assigns a pseudo random number sequence to each bit of the transmission information QD, and generates a pseudo random number sequence PN of, for example, 38400 bits (152 bits x 256 chips) from each transmission packet. At that time, a pseudo-random number sequence assigned to a bit (QD = 0) having a value “0” and a pseudo-random number sequence assigned to a bit (QD = 1) having a value “1” in the transmission information QD Means that the values of each bit are inverted. That is, for example, the multiplication unit 269 assigns a pseudo-random number sequence to a bit (QD = 0) whose transmission information QD value is “0”, and a bit whose transmission information QD value is “1” (QD = 1). Is assigned a pseudo-random number sequence in which the value of each bit is inverted. For example, as shown in the lowermost stage of FIG. 11, the multiplication unit 269 performs the pseudo random number sequence “1101000110100... 1001” on the bit (QD = 1) of the transmission information QD whose value is “1”. ”And a pseudo random number sequence“ 0010111001011... 0110 ”is assigned to a bit (QD = 0) having a value of“ 0 ”.

In this pseudo random number sequence PN, the diffusion coefficient is 256, and the chip interval Δ is 5 μs. The multiplication unit 269 supplies the pseudo random number sequence PN generated as described above to the multiplication unit 253.

The carrier oscillation unit 252 oscillates at a predetermined frequency (carrier frequency) and generates a carrier signal used for transmission of a radio signal. For example, the carrier oscillation unit 252 transmits the transmission signal at 925 MHz so as to transmit the transmission signal in the 920 MHz band. The carrier oscillation unit 252 supplies the generated carrier signal to the multiplication unit 253. The multiplier 253 modulates the polarity of the carrier signal supplied from the carrier oscillator 252 according to the pseudo random number sequence PN supplied from the multiplier 269. For example, the multiplication unit 253 performs BPSK modulation. For example, when the pseudo random number sequence PN is “1”, the carrier phase is modulated to be π, and when the pseudo random number sequence PN is “0”, the carrier phase is −π (polarity inversion). Modulated. The multiplier 253 supplies the modulation result to the band pass filter (BPF) 254 as the modulation signal CM. The BPF 254 limits the band of the modulation signal CM supplied from the multiplier 253 to the carrier frequency band. The BPF 254 supplies the modulation signal CM thus band-limited to the amplification unit 255 as the transmission signal TX. The amplification unit 255 amplifies the transmission signal TX supplied from the BPF 254 at a predetermined transmission timing, and transmits the amplified transmission signal TX as a radio signal via the antenna 256.

<High sensitivity receiver>
FIG. 12 is a diagram illustrating a main configuration example of the high sensitivity receiver 152 that receives a radio signal transmitted from the transmitter 101.

As shown in FIG. 12, the high sensitivity receiver 152 includes a signal reception unit 301 and a reception information processing unit 302. The signal reception unit 301 and the reception information processing unit 302 are connected to each other via a bus 303.

The signal receiving unit 301 receives a signal transmitted from the transmitter 101. In addition to the antenna 152A, the signal receiving unit 301 includes a SAW (Surface Acoustic Wave) filter 311, LNA 312, oscillator 313, frequency divider 314, IQ generator 315, multiplier 316, LPF 317, AAF (Anti -Aliasing Filter) 318, ADC (Analog Digital Converter) 319, multiplier 320, LPF321, AAF322, and ADC323.

The SAW filter 311 applies the characteristics of surface acoustic waves propagating on the surface of a substance, and has a specific frequency by a regular comb electrode (IDT (Interdigital Transducer)) formed on a piezoelectric thin film or substrate. This is a filter for extracting a band electric signal. The center frequency and band can be determined by the structure period of the comb-shaped electrode and the physical properties of the piezoelectric body and electrode. SAW filter 311 extracts a signal component of a desired frequency band from the received signal that is a radio signal received by antenna 152A. The SAW filter 311 supplies the extracted signal component (that is, the received signal) to the LNA 312. The LNA 312 amplifies the supplied reception signal and supplies it to the multiplier 316 and the multiplier 320.

The oscillation unit 313 transmits at a predetermined frequency, and supplies a signal of that frequency to the frequency division unit 314. The frequency divider 314 divides the signal supplied from the oscillator 313 to generate a carrier frequency signal. For example, when receiving a signal transmitted in a 920 MHz band, for example, the oscillation unit 313 and the frequency dividing unit 314 generate a signal having a frequency of 925 MHz. The frequency divider 314 supplies the signal to the IQ generator 315. The IQ generator 315 generates a carrier signal for each of I and Q using the signal supplied from the frequency divider 314. That is, the IQ generator 315 controls the phase of the signal and generates two carrier signals that are 90 degrees out of phase with each other. The IQ generator 315 supplies the generated carrier signal for I to the multiplier 316 and supplies the carrier signal for Q to the multiplier 320.

The multiplication unit 316 multiplies the reception signal supplied from the LNA 312 and the carrier signal supplied from the IQ generator 315 to generate a baseband InPhase signal (I signal). The multiplier 316 supplies the I signal to the LPF 317. The LPF 317 performs a filtering process to pass a low frequency component lower than a predetermined frequency and remove a higher frequency component than the predetermined frequency with respect to the supplied I signal. The LPF 317 supplies the I signal resulting from the filtering process to the AAF 318. The AAF 318 performs a filtering process on the supplied I signal so as to suppress aliasing (folding error). For example, the AAF 318 performs a low-pass filter process so that a lower frequency component than a predetermined frequency is passed through the supplied I signal. The AAF 318 supplies the I signal resulting from the filtering process to the ADC 319. The ADC 319 performs A / D conversion on the supplied I signal and converts the analog signal into a digital signal. The ADC 319 supplies the digital I signal to the reception information processing unit 302 (for example, the demodulation unit 333) via the bus 303.

The multiplication unit 320 multiplies the reception signal supplied from the LNA 312 and the carrier signal supplied from the IQ generator 315 to generate a baseband Quadrature signal (Q signal). Multiplier 320 supplies the Q signal to LPF 321. The LPF 321 performs a filtering process for passing a low frequency component lower than a predetermined frequency and removing a high frequency component higher than the predetermined frequency for the supplied Q signal. The LPF 321 supplies the Q signal resulting from the filtering process to the AAF 322. The AAF 322 performs a filtering process on the supplied Q signal so as to suppress aliasing. For example, the AAF 322 performs a low-pass filter process on the supplied Q signal so as to pass a low frequency component from a predetermined frequency. The AAF 322 supplies the Q signal resulting from the filtering process to the ADC 323. The ADC 323 performs A / D conversion on the supplied Q signal and converts the analog signal into a digital signal. The ADC 323 supplies the digital Q signal to the reception information processing unit 302 (for example, the demodulation unit 333) via the bus 303.

The reception information processing unit 302 performs processing related to information processing for information (reception information) transmitted from the transmitter 101. The reception information processing unit 302 includes a bus 330, a control unit 331, a memory 332, a demodulation unit 333, a GNSS signal reception unit 334, an information processing unit 335, a communication unit 336, and a power supply unit 337.

The processing units of the control unit 331 to the power supply unit 337 are connected to each other via the bus 330 and can exchange information. The bus 330 is also connected to the bus 303, and the processing units of the control unit 331 to the power supply unit 337 are also information with the processing units of the signal receiving unit 301 such as the oscillation unit 313, the ADC 319, and the ADC 323. Can be exchanged.

The control unit 331 controls each processing unit of the memory 332 to the power supply unit 337, and performs processing related to control for information processing on received information. The memory 332 includes any writable (rewritable) recording medium (storage medium) such as a semiconductor memory such as a RAM, an SSD, or a flash memory, or a magnetic recording medium such as a hard disk. The memory 332 stores various information supplied from, for example, the control unit 331 and any of the demodulation unit 333 to the power supply unit 337 by the recording medium (storage medium). In addition, the memory 332 can supply the information stored therein to, for example, the control unit 331, the demodulation unit 333, the power supply unit 337, and the like. Further, the memory 332 can store information supplied from the signal receiving unit 301 via the bus 303, and can also supply the stored information to the signal receiving unit 301 via the bus 303. .

The demodulation unit 333 performs processing related to demodulation of digital data of the I signal and Q signal of the reception signal received by the signal reception unit 301 based on the control of the control unit 331, for example.

The GNSS signal reception unit 334 performs processing related to reception of a GNSS signal transmitted from the GNSS satellite 161 using the antenna 152B based on the control of the control unit 331, for example. For example, the GNSS signal receiving unit 334 may generate position information of the high sensitivity receiver 152 (relay station 102) using the received GNSS signal.

The information processing unit 335 performs processing related to information processing on information (reception information) obtained by demodulation in the demodulation unit 333 based on the control of the control unit 331, for example. The content of this information processing is arbitrary.

The communication unit 336 performs processing related to communication with other devices based on the control of the control unit 331, for example. For example, the communication unit 336 can supply and store received information such as position information of the transmitter 101 obtained by processing in the information processing unit 335 or the like to the memory 153. Further, for example, the communication unit 336 can supply and store the position information (or GNSS signal, time information, etc.) of the high sensitivity receiver 152 generated in the GNSS signal receiving unit 334 to the memory 153. For example, the communication unit 336 can associate and store the reception information and the position information of the high sensitivity receiver 152 in the memory 153 and store them. For example, the communication unit 336 can also notify the power supply control device 151. Of course, the content of communication performed by the communication unit 336 and the communication partner are arbitrary, and communication other than the above-described example may be performed.

The power supply unit 337 performs processing related to the power supplied from the power supply control device 151 based on the control of the control unit 331, for example. For example, the power supply unit 337 appropriately supplies the power supplied from the power supply control device 151 to each processing unit and drives it. For example, the power supply unit 337 can supply power only to the processing unit to be driven. Thereby, an increase in power consumption of the high sensitivity receiver 152 can be suppressed.

When the signal receiving unit 301 receives the wireless signal transmitted from the transmitter 101, the wireless signal is detected as a waveform as shown in FIG. The demodulator 333 extracts frame data from such a waveform based on the peak position and the like, and corrects the frequency, initial phase, and the like. The upper part of FIG. 14 shows an example of the phase change in the frame. In FIG. 14, frames 5 (Frame 5) to 8 (Frame 8) are extracted and displayed, but the phase and frequency are slightly changed. The demodulator 333 obtains a straight line that best approximates the phase change and obtains a correlation value β2 (n) as shown in the lower part of FIG. In the lower part of FIG. 14, the slope of each straight line corresponds to γ (n), and the initial phase corresponds to θ (n). Further, the correlation value β2 (n) changes in accordance with the correlation between the phase fluctuation and the approximate line. The demodulating unit 333 adds frame data using such a correlation value β2 (n) as a weighting coefficient.

FIG. 15 shows a constellation obtained as a result of decoding as described above. As shown in FIG. 15, since two points are separated as BPSK modulation, data is correctly decoded in this case. The demodulator 333 demodulates this to BPSK to obtain received information.

As described above, the transmitter 101 can set the maximum continuous transmission time short, and for example, by setting 0.2 seconds in the 920 MHz band, it can select and transmit from many frequency channels. It is possible to construct a transmission / reception system that is stronger against interference. Also, by integrating a large number of short time frames, the effective SNR can be improved without exceeding the maximum transmission time limit defined in the Radio Law. At this time, since the synchronization signal is distributed throughout the frame, even when there is a phase fluctuation in the frame, the phase and frequency can be corrected more appropriately. As a result, the high sensitivity receiver 152 can obtain the received information more accurately even if the received signal is so weak as to be buried in noise and difficult to decode by the conventional method. That is, the wireless signal transmitted by the transmitter 101 can be received with higher sensitivity, and the communicable range with the transmitter 101 can be further widened.

<LTE modem>
The relay station 102 uses the LTE modem 154 to transmit information (reception information) transmitted from the transmitter 101 to the high-sensitivity receiver 152 by transmitting and receiving wireless signals as described with reference to FIGS. Supply to the server 104. FIG. 16 is a block diagram illustrating a main configuration example of the LTE modem 154.

16, the LTE modem 154 includes a control unit 351, a memory 352, a communication unit 353, a power supply unit 354, and an LTE communication unit 355. The processing units of the control unit 351 to the LTE communication unit 355 are connected to each other via a bus 350. That is, information can be exchanged and controlled between the processing units.

The control unit 351 performs processing related to control of each processing unit of the LTE modem 154. The memory 352 has any writable (rewritable) recording medium (storage medium) such as a semiconductor memory such as a RAM, an SSD, or a flash memory, or a magnetic recording medium such as a hard disk. The memory 352 stores various types of information supplied from, for example, the control unit 351 and any of the communication unit 353 to the LTE communication unit 355 by the recording medium (storage medium). Further, the memory 352 can supply the information stored therein to, for example, the control unit 351, the communication unit 353 to the LTE communication unit 355, and the like. For example, the memory 352 stores information (for example, position information and ID of the transmitter 101 or position information and ID of the high-sensitivity receiver 152) read from the memory 153 acquired by the communication unit 353. can do.

The communication unit 353 performs processing related to communication with other devices based on the control of the control unit 351, for example. For example, the communication unit 353 can read information from the memory 153. For example, the communication unit 353 can also notify the power supply control device 151. Of course, the content of communication performed by the communication unit 353 and the communication partner are arbitrary, and communication other than the above-described example may be performed.

The power supply unit 354 performs processing related to the power supplied from the power supply control device 151 based on the control of the control unit 351, for example. For example, the power supply unit 354 appropriately supplies the power supplied from the power supply control device 151 to each processing unit and drives it. For example, the power supply unit 354 can supply power only to the processing unit to be driven. Thereby, an increase in power consumption of the LTE modem 154 can be suppressed.

The LTE communication unit 355 communicates with, for example, an LTE communication base station based on the control of the control unit 351, connects to the network 103, and communicates with the server 104 via the network 103. For example, the LTE communication unit 355 reads information stored in the memory 352 (for example, position information and ID of the transmitter 101 or position information and ID of the high sensitivity receiver 152) and supplies the information to the server 104. be able to. The LTE communication unit 355 can also acquire arbitrary information such as commands and data from the server 104, for example.

<Flow of control processing>
An example of the flow of control processing executed in the relay station 102 of the position notification system 100 configured as described above will be described with reference to the flowcharts of FIGS. The relay station 102 controls the power supply to the high-sensitivity receiver 152 and the LTE modem 154 using the power supply control device 151 by performing control processing as shown in the flowcharts of FIGS. 17 and 18.

For example, the power supply control device 151 is connected to the high sensitivity receiver 152 only when the high sensitivity receiver 152 is driven (when the high sensitivity receiver 152 receives a radio signal) as shown in the flowchart of FIG. Supply power.

That is, when the high sensitivity receiver 152 receives a radio signal from the transmitter 101, the control unit 211 of the power supply control device 151 controls the connection unit 212 to the high sensitivity receiver 152 in step S101 of FIG. The high-sensitivity receiver 152 is turned on (ON). When the supply of power is started, the power supply unit 337 of the high sensitivity receiver 152 supplies the power to the processing unit that drives the power in step S111 and starts driving them.

In step S112, the signal receiving unit 301 of the high sensitivity receiver 152 receives the radio signal transmitted from the transmitter 101. When the wireless signal is received, the demodulation unit 333 and the information processing unit 335 of the high sensitivity receiver 152 demodulate the received signal and perform signal processing in step S113, and the position information, ID, and the like of the transmitter 101 are received. The information is extracted from the signal and acquired. The demodulation unit 333 and the information processing unit 335 store the acquired information in, for example, the memory 332. In step S114, the communication unit 336 of the high sensitivity receiver 152 reads out information (reception information) stored in the memory 332, supplies the information to the memory 153, and stores it. In step S121, the memory 153 stores the supplied reception information. When the process of step S114 ends, the communication unit 336 notifies the power supply control device 151 that the received information is stored in the memory 153 in step S115.

In step S102, the control unit 211 of the power supply control device 151 acquires the notification. When the notification is acquired, the control unit 211 of the power supply control device 151 controls the connection unit 212 to end the supply of power to the high sensitivity receiver 152 in step S103, and turns off the power of the high sensitivity receiver 152 ( OFF). When the supply of power ends, the power supply unit 337 of the high sensitivity receiver 152 also ends the supply of power to each processing unit in step S116 and ends the driving thereof.

In addition, when the LTE modem 154 supplies the information obtained from the transmitter 101 to the server 104, the control unit 211 of the power supply control device 151 controls the connection unit 212 in step S141 to supply power to the LTE modem 154. Supply is started and the power of the LTE modem 154 is turned on. When the supply of power is started, the power supply unit 354 of the LTE modem 154 supplies the power to the processing unit that drives the power in step S171 and starts the driving thereof.

In step S 172, the communication unit 353 of the LTE modem 154 reads desired information (such as the position information of the transmitter 101) from the memory 153. The memory 153 supplies the requested information to the LTE modem 154 in step S161. When the information is acquired, the LTE communication unit 355 of the LTE modem 154 supplies the information to the server 104 in step S173.

When the process of step S173 ends, the communication unit 353 notifies the power supply control device 151 that the information has been transmitted to the server 104 in step S174.

In step S142, the control unit 211 of the power supply control device 151 acquires the notification. When the notification is acquired, the control unit 211 of the power supply control device 151 controls the connection unit 212 to end the supply of power to the LTE modem 154 and turns off the power of the LTE modem 154 in step S143. . When the supply of power ends, the power supply unit 354 of the LTE modem 154 also ends the supply of power to each processing unit in step S175 and ends their driving.

By performing the control process as described above, the relay station 102 can suppress supply of unnecessary power to the high sensitivity receiver 152 and the LTE modem 154, and can suppress an increase in power consumption thereof. In addition, the high sensitivity receiver 152 and the LTE modem 154 can be driven at different timings, and an increase in power consumption peak (maximum value) can be suppressed.

<Flow of power supply control processing>
An example of the flow of power supply control processing executed by the power supply control device 151 in this case will be described with reference to the flowchart of FIG.

When the information transmitted from the transmitter 101 is relayed to the relay station 102, the control unit 211 of the power control device 151 executes this power supply control process.

When the power supply control process is started, the control unit 211 controls the connection unit 212 to start supplying power to the high sensitivity receiver 152 in step S181, thereby turning on the power of the high sensitivity receiver 152. Turn on (ON) and cause the high sensitivity receiver 152 to start receiving wireless signals. This process corresponds to step S101 in FIG.

In step S <b> 182, the control unit 211 receives the radio signal transmitted from the transmitter 101 by the high sensitivity receiver 152, completes demodulation of the radio signal, and stores information (position information and the like) of the transmitter 101 in the memory 153. Whether or not the data has been written is determined, and the process waits until it is determined that the data has been written. That is, the control unit 211 waits until receiving a notification from the high sensitivity receiver 152. If it is determined that the notification from the high sensitivity receiver 152 has been received (when the process of step S102 of FIG. 17 is performed), the control unit 211 advances the process to step S183.

In step S183, the control unit 211 controls the connection unit 212 to end the supply of power to the high sensitivity receiver 152, thereby turning off the high sensitivity receiver 152 and turning off the high sensitivity receiver 152. The driving of 152 is ended. This process corresponds to step S103 in FIG.

In step S184, the control unit 211 controls the connection unit 212 to start supplying power to the LTE modem 154, thereby turning on the LTE modem 154 and turning the LTE modem 154 from the memory 153 to the LTE modem 154. The information of the transmitter 101 is read and the information is supplied to the server 104. This process corresponds to step S141 in FIG.

In step S185, the control unit 211 determines whether or not the LTE modem 154 reads the information of the transmitter 101 from the memory, and further supplies the information to the server 104, and waits until it is determined that the information is supplied. That is, the control unit 211 stands by until a notification to that effect is received from the LTE modem 154. If it is determined that a notification to that effect has been received from the LTE modem 154 (when the process of step S142 in FIG. 18 is performed), the control unit 211 advances the process to step S186.

In step S186, the control unit 211 controls the connection unit 212 to end the supply of power to the LTE modem 154, thereby turning off the power of the LTE modem 154 and terminating the driving of the LTE modem 154. . This process corresponds to step S143 in FIG.

When the process of step S186 is completed, the power supply control process is terminated. By executing the power supply control process as described above, the power supply control device 151 can suppress the supply of unnecessary power to the high-sensitivity receiver 152 and the LTE modem 154, and suppress an increase in power consumption thereof. it can. In addition, the high sensitivity receiver 152 and the LTE modem 154 can be driven at different timings, and an increase in power consumption peak (maximum value) can be suppressed.

<Others>
In the above description, the relay station 102 has the LTE modem 154, and the information received from the transmitter 101 has been described to be supplied to the server 104 from the roof by LTE communication. It is not limited to. For example, the information of the transmitter 101 acquired by the high sensitivity receiver 152 may be supplied from the indoor of the building 130 to the server 104 by wired communication via a router (router with modem function).

FIG. 20 shows a main configuration example of the relay station 102 and the like in that case. In the case of the example illustrated in FIG. 20, the relay station 102 includes the power control device 151 and the high sensitivity receiver 152, but does not include the memory 153 or the LTE modem 154. Instead, a memory 153 and a router 361 are installed inside the building 130.

The router 361 is a router with a so-called modem function, and connects the LAN constructed by the equipment in the building 130 and the network 103. That is, the router 361 can communicate with the server 104 via the network 103. The router 361 can also communicate with the memory 153 and the like.

Moreover, in the rooftop equipment 131, the power cable 148 is connected to the power control device 151 via the mixer 363. The power supply is the same as in the example of FIG. However, the high-sensitivity receiver 152 supplies information related to the transmitter 101 (for example, location information and ID of the transmitter 101) acquired by receiving the radio signal transmitted from the transmitter 101 to the memory 153. Instead of storing, the signal is supplied to the mixer 363 via the signal cable 362 and is superposed on the electric power in the mixer 363. Information regarding the transmitter 101 is supplied to the mixer 143 and further supplied to the indoor memory 153 via the antenna cable 146.

The memory 153 stores the information. The router 361 reads information on the transmitter 101 stored in the memory 153 and supplies the information to the server 104 via the network 103. Information relating to the high sensitivity receiver 152 (position information, ID, etc. of the high sensitivity receiver 152) is also supplied to the router 361 via the memory 153 and to the server 104 via the network 103. Also good.

In this case, the memory 153 and the router 361 can be driven by obtaining a household power source from an indoor outlet or the like. Therefore, the power supply controller 151 need only control the supply of power to the high sensitivity receiver 152. The control method is the same as in the case of FIG. 3, and each processing unit is configured to execute each process related to the high sensitivity receiver 152 as in the case described with reference to the flowcharts of FIGS. 17 to 19. It ’s fine.

<2. Second Embodiment>
<Battery>
Note that the power supply control device 151 may include a power storage unit (so-called battery) that charges power. FIG. 21 is a block diagram illustrating a main configuration example of the power supply control device 151 in that case. As illustrated in FIG. 21, the power supply control device 151 in this case includes a connection unit 371 and a power storage unit 372 in addition to the configuration described with reference to FIG. 7. In this case, the control unit 211 controls not only the connection unit 212 but also the connection unit 371 and the power storage unit 372.

The connection unit 371 connects or disconnects between the power supply terminal 201 and the power storage unit 372. That is, the connection unit 371 can control power storage to the power storage unit 372. The configuration of the connection unit 371 is arbitrary, but can be configured by, for example, a 1-input 1-output switch (for example, a switch having the same configuration as the switch 230 and the switch 240).

The power storage unit 372 is composed of, for example, a battery such as lithium ion, and can be charged with power supplied via the mixer 143 in a state where the power storage unit 372 is connected to the power supply terminal 201 through the connection unit 371.

In this case, the connection unit 212 determines where the output destination from the power storage unit 372 is (for example, whether the output destination is the power supply terminal 202, the power supply terminal 203, or both are not output destinations. Control). This control method is the same as in the example of FIG. 7 in which the connection destination of the power supply terminal 201 is controlled.

That is, in this case, the power storage unit 372 is once charged with power, and the high sensitivity receiver 152 and the LTE modem 154 are driven using the power stored in the power storage unit 372. Therefore, it is possible to suppress an increase in the load (influence of power use) on the existing equipment when driving the high sensitivity receiver 152 and the LTE modem 154. For example, when the power of the high sensitivity receiver 152 or the LTE modem 154 can be covered by the power charged in the power storage unit 372, the power of the existing equipment is not used (for example, power supply to the satellite antenna 142, etc. The high-sensitivity receiver 152 and the LTE modem 154 can be driven without significantly affecting the receiver. Further, for example, when the remaining charge amount (power storage amount) of the power storage unit 372 is not sufficient, the high sensitivity receiver 152 and the LTE modem 154 can be prevented from being driven. Thereby, increase of the load with respect to the existing installation can be suppressed.

In addition, for example, by reducing the electric power when the electric power is stored in the electric storage unit 372 and charging it for a longer time, the peak of the power consumption of the relay station 102 can be suppressed. Furthermore, since charging to the power storage unit 372 can be controlled by the connection unit 371, for example, charging is performed in a time zone where the operation rate of the high sensitivity receiver 152 or the LTE modem 154 is low, such as at night. be able to. Thereby, the peak of the power consumption of the relay station 102 can be suppressed. Further, for example, charging can be performed in a time zone where the operation rate of existing equipment is low, such as at night. Thereby, increase of the load with respect to the existing installation can be suppressed.

<Flow of control processing>
An example of the flow of control processing relating to charging executed in the relay station 102 in this case will be described with reference to the flowchart of FIG.

In step S201, the control unit 211 of the power control device 151 controls the connection unit 212 to start supplying power to the high sensitivity receiver 152, and turns on the power of the high sensitivity receiver 152. When the supply of power is started, the power supply unit 337 of the high sensitivity receiver 152 supplies the power to the processing unit that drives the power in step S211, and starts driving them.

In step S212, the GNSS signal receiver 334 of the high sensitivity receiver 152 receives a GNSS signal from the GNSS satellite. When receiving the GNSS signal, the demodulation unit 333 and the information processing unit 335 of the high sensitivity receiver 152 demodulate the received GNSS signal or perform signal processing in step S213, and obtain time information from the GNSS signal. Extract and get. The demodulation unit 333 and the information processing unit 335 store the acquired time information in, for example, the memory 332. In step S <b> 214, the communication unit 336 of the high sensitivity receiver 152 reads the time information stored in the memory 332 and supplies the time information to the power supply control device 151.

In step S202, the control unit 211 of the power supply control device 151 acquires the time information. Based on the time information, the control unit 211 determines whether or not the current time is a preset designated time zone. In addition, the control unit 211 measures the state of charge (for example, voltage) of the power storage unit 372 and determines whether or not the battery is fully charged, which is a state in which it is fully charged.

In step S <b> 203, the control unit 211 connects when the current time is a preset designated time zone, the output voltage from the power storage unit 372 is lower than a predetermined threshold, and the power storage unit 372 is not fully charged. The power supply terminal 201 is connected to the power storage unit 372 by controlling the unit 371 and charging of the power storage unit 372 is started.

In step S <b> 204, when power storage unit 372 is fully charged or the designated time zone has passed, control unit 211 controls connection unit 371 to disconnect between power supply terminal 201 and power storage unit 372. And the charge to the electrical storage part 372 is complete | finished.

When the process of step S204 ends, the control process ends. By controlling the charging of the power storage unit 372 in this manner, for example, an unnecessary increase in power consumption such as power supply to the fully charged power storage unit 372 can be suppressed. Moreover, the peak of the power consumption of the relay station 102 can be suppressed. Moreover, the increase in the load with respect to the existing equipment can be suppressed.

It should be noted that the control processing related to the discharge of the power storage unit 372, that is, the power supply to the high sensitivity receiver 152 and the LTE modem 154, is performed using the flowcharts of FIGS. 17 and 18 except that the power charged in the power storage unit 372 is used. Since it is basically the same as that described, the description thereof is omitted.

<Charge control process flow>
An example of the flow of charge control processing executed by the power supply control device 151 in this case will be described with reference to the flowchart of FIG.

When the charging control process is started, the control unit 211 determines whether or not the power storage unit 372 is in a fully charged state by confirming the output voltage of the power storage unit 372 in step S221. If it is determined that the battery is not fully charged, the process proceeds to step S222.

In step S222, the control unit 211 controls the connection unit 212 to start supplying power to the high sensitivity receiver 152, thereby turning on the power of the high sensitivity receiver 152 and performing high sensitivity reception. The machine 152 receives the GNSS signal. This process corresponds to step S201 in FIG.

In step S223, the control unit 211 determines whether or not the high-sensitivity receiver 152 receives the GNSS signal, extracts time information, and supplies the time information from the high-sensitivity receiver 152. Wait until it is judged. When it is determined that the time information has been acquired from the high sensitivity receiver 152 (when the process of step S202 of FIG. 22 is performed), the control unit 211 advances the process to step S224.

In step S224, the control unit 211 determines whether or not the current time is in the specified time zone based on the acquired time information. If it is determined that it is the designated time zone, the process proceeds to step S225.

That is, when it is determined that the power storage unit 372 is not fully charged and the current time is in a specified time zone (for example, at night), the control unit 211 controls the connection unit 371 in step S225, The power storage unit 372 is connected to the power supply terminal 201 to charge the power storage unit 372 with power. This process corresponds to step S203 in FIG.

In step S226, the control unit 211 determines whether or not the power storage unit 372 is fully charged by checking the output voltage of the power storage unit 372 or the like. If it is determined that the battery is not fully charged, the process proceeds to step S227. In step S227, the control unit 211 determines whether or not the current time is in the specified time zone based on the acquired time information. If it is determined that it is the designated time zone, the process returns to step S225, and the subsequent processes are repeated. That is, charging is performed while the power storage unit 372 is not fully charged and the current time is in the specified time zone.

In Step S227, when it is determined that the current time is not the designated time zone, the control unit 211 controls the connection unit 371 to disconnect between the power supply terminal 201 and the power storage unit 372 and terminate the charging. This process corresponds to step S204 in FIG. When charging ends, the charging control process ends.

If it is determined in step S221 that the power storage unit 372 is in a fully charged state, charging is omitted and the charging control process ends. Moreover, also when it determines with the present time not being a designated time slot | zone in step S224, charge is abbreviate | omitted and a charge control process is complete | finished.

Furthermore, when it is determined in step S226 that the power storage unit 372 is in a fully charged state, the connection unit 371 is controlled to disconnect between the power supply terminal 201 and the power storage unit 372, thereby terminating the charging. This process corresponds to step S204 in FIG. When charging ends, the charging control process ends.

By executing the charge control process as described above, the power supply control device 151 can suppress an unnecessary increase in power consumption, such as power supply to the fully charged power storage unit 372, for example. Moreover, the peak of the power consumption of the relay station 102 can be suppressed. Moreover, the increase in the load with respect to the existing equipment can be suppressed.

<Flow of power supply control processing>
An example of the flow of the power supply control process in this case will be described with reference to the flowchart of FIG.

When the power supply control process is started, the control unit 211 confirms the output voltage of the power storage unit 372 in step S241 so that the remaining charge amount (power storage amount) of the power storage unit 372 is equal to the high sensitivity receiver 152. Or whether the LTE modem 154 is sufficient to drive. The reference whether or not this is sufficient is set according to the charging capacity of power storage unit 372, the power consumption of high sensitivity receiver 152 and LTE modem 154, and the like. It may be less than a fully charged state.

If it is determined that the remaining charge of the power storage unit 372 is sufficient, the process proceeds to step S242. Each process of step S242 thru | or step S247 is performed similarly to each process of step S181 thru | or step S186 of FIG.

If it is determined in step S241 that the remaining charge of the power storage unit 372 is not sufficient, the power supply control process ends.

That is, only when the remaining charge amount is sufficient, the high-sensitivity receiver 152 and the LTE modem 154 are driven using the power of the power storage unit 372 as in the case of the first embodiment. By doing so, the high sensitivity receiver 152 and the LTE modem 154 are driven without using the power of the existing equipment (for example, without greatly affecting the power supply to the satellite antenna 142 or the like). be able to. That is, an increase in load on existing equipment can be suppressed.

<3. Third Embodiment>
<Relay station>
Note that a radio signal may be transmitted from the relay station 102 to the transmitter 101. FIG. 25 shows a main configuration example of the relay station 102 in that case. As shown in FIG. 25, in this case, the relay station 102 has a high sensitivity transceiver 381 instead of the high sensitivity receiver 152. The high sensitivity transceiver 381 is the same device as the high sensitivity receiver 152 except that it has a transmission function. That is, the high sensitivity transceiver 381 can receive a radio signal transmitted from the transmitter 101 using the antenna 381A. The high sensitivity transceiver 381 can also transmit a radio signal to the transmitter 101 using the antenna 381A. The high sensitivity transceiver 381 can also receive a GNSS signal from the GNSS satellite 161 using the antenna 381B.

In this case, the transmitter 101 also has a reception function for receiving a radio signal transmitted from the high sensitivity transceiver 381. Therefore, strictly speaking, the transmitter / receiver is described as the transmitter 101 here. In this case, the transmitter 101 may have the configuration of the high sensitivity receiver 152 described with reference to FIG. 12 in addition to the configuration described with reference to FIG.

The content of the information included in the radio signal transmitted from the high sensitivity transceiver 381 to the transmitter 101 is arbitrary. For example, the high sensitivity transmitter / receiver 381 may request the transmitter 101 to transmit position information by transmitting a wireless signal to the transmitter 101. Further, for example, the high sensitivity transceiver 381 may transmit a wireless signal to the transmitter 101 so that the timing at which the transmitter 101 transmits the wireless signal can be designated. By doing so, the wireless signal can be transmitted to the transmitter 101 at the timing when the high-sensitivity transceiver 381 is driven, so that the wireless signal can be easily received by the high-sensitivity transceiver 381. be able to.

The high-sensitivity transceiver 381 can supply arbitrary information to the memory 153 and store it, as in the case of the high-sensitivity receiver 152. The LTE modem 154 can also read the information from the memory 153 and supply it to the server 104.

The power supply control method by the power supply control device 151 is basically the same as that of the other embodiments described above. In this case, even when the high sensitivity transceiver 381 transmits a radio signal, the power supply control device Power is supplied from 151 to the high sensitivity transceiver 381.

<High sensitivity transceiver>
A main configuration example of the high sensitivity transceiver 381 is shown in FIG. As shown in FIG. 26, the high-sensitivity transceiver 381 includes a signal transceiver 391, a reception information processor 302, and a bus 303.

The signal transmission / reception unit 391 performs processing related to transmission / reception of radio signals. The signal transmission / reception unit 391 includes an antenna 381A, a switching unit 392, a signal reception unit 301, and a signal transmission unit 393.

The switching unit 392 switches the processing unit connected to the antenna 381A according to signal transmission / reception. For example, when receiving a radio signal, the switching unit 392 connects the signal receiving unit 301 to the antenna 381A. Thereby, the signal receiving part 301 can perform the signal processing with respect to the radio signal received by the antenna 381A. For example, when transmitting a radio signal, the switching unit 392 connects the signal transmission unit 393 to the antenna 381A. The signal transmission unit 393 performs processing related to transmission of a radio signal. In other words, the signal transmission unit 393 can execute signal processing on the signal transmitted from the antenna 381A.

The signal transmission unit 393 includes a PLL (Phase Locked Loop) 394, an oscillation unit 395, and an LNA 396. The reception information processing unit 302 supplies a signal indicating transmission information to the signal transmission unit 393 via the bus 303. The PLL 394 generates a signal having a frequency corresponding to the frequency of the signal indicating the transmission information and supplies the signal to the oscillation unit 395. That is, the PLL 394 supplies the signal modulated by the transmission information to the oscillation unit 395. The oscillating unit 395 generates a carrier signal (for example, 925 MHz) modulated according to the signal, and supplies it to the LNA 396 as a transmission signal. The LNA 396 amplifies the transmission signal and transmits it as a radio signal from the antenna 381A via the switching unit 392.

The reception information processing unit 302 basically has the same configuration as that in FIG. 12, but includes a modulation / demodulation unit 397 instead of the demodulation unit 333. The modem unit 397 performs not only processing related to demodulation of the received signal but also processing related to modulation of the transmission signal. The modem unit 397 supplies, for example, a signal indicating the modulated transmission information to the signal transmission unit 393.

As described above, even when the relay station 102 includes the high sensitivity transceiver 381 instead of the high sensitivity receiver 152, the relay station 102 is not required to drive the high sensitivity transceiver 381 or the LTE modem 154. By suppressing the supply of power to them, an increase in power consumption can be suppressed. Thereby, the relay station 102 can suppress the occurrence of power shortage and realize more stable power supply.

<Flow of control processing>
Also in this case, the control processing related to reception of the radio signal transmitted from the transmitter 101 is performed in the same manner as described with reference to the flowcharts of FIGS. With reference to the flowchart of FIG. 27, an example of a flow of control processing related to transmission of a radio signal by the high sensitivity transceiver 381 will be described.

When the high-sensitivity transceiver 381 transmits a wireless signal, the control unit 211 of the power supply controller 151 controls the connection unit 212 to start supplying power to the high-sensitivity transceiver 381 in step S261 of FIG. Then, the power source of the high sensitivity transceiver 381 is turned on. When the supply of power is started, the power supply unit 337 of the high-sensitivity transceiver 381 supplies the power to the processing unit that drives the power in step S271 and starts driving them.

In step S272, the reception information processing unit 302 of the high sensitivity transceiver 381 generates transmission information to be transmitted from the signal transmission unit 393. In step S273, the modem unit 397 modulates the transmission information to generate a transmission signal. In addition, the signal transmission unit 393 transmits the transmission signal as a radio signal. When the wireless signal is transmitted, the communication unit 336 of the high sensitivity transceiver 381 notifies the power supply control device 151 that the transmission information has been transmitted in step S274.

In step S262, the control unit 211 of the power supply control device 151 acquires the notification. When the notification is acquired, the control unit 211 of the power supply control device 151 controls the connection unit 212 to end the supply of power to the high sensitivity transmitter / receiver 381 in step S263 and turns off the power of the high sensitivity transmitter / receiver 381 ( OFF). When the supply of power ends, the power supply unit 337 of the high-sensitivity transceiver 381 also ends the supply of power to each processing unit in step S275 and ends their driving.

By performing the control process as described above, the relay station 102 can suppress supply of unnecessary power to the high-sensitivity transceiver 381 and the LTE modem 154, and can suppress an increase in power consumption thereof. In addition, the high-sensitivity transceiver 381 and the LTE modem 154 can be driven at different timings, and an increase in power consumption peak (maximum value) can be suppressed. Furthermore, transmission processing and reception processing of the high sensitivity transceiver 381 can be executed at different timings, and an increase in power consumption peak (maximum value) can be suppressed.

<Flow of power supply control processing>
An example of the flow of power supply control processing executed by the power supply control device 151 in this case will be described with reference to the flowchart of FIG. The power supply control device 151 will be described as having a connection unit 371 and a power storage unit 372 as in the case of the second embodiment (FIG. 21).

When the power supply control process is started, the control unit 211 confirms the output voltage of the power storage unit 372 in step S281 so that the remaining charge amount (power storage amount) of the power storage unit 372 is equal to the high sensitivity receiver 152. Or whether the LTE modem 154 is sufficient to drive. If it is determined that the remaining charge of power storage unit 372 is sufficient, the process proceeds to step S282. In step S282, the control unit 211 determines whether or not the high sensitivity transceiver 381 performs reception. If it is determined that the high sensitivity transceiver 381 performs reception, the process proceeds to step S283. In this case, each process of step S283 to step S288 is executed in the same manner as each process of step S181 to step S186 in FIG. When the process of step S288 ends, the power supply control process ends.

If it is determined in step S282 that the high sensitivity transceiver 381 performs transmission, the process proceeds to step S289. In this case, in step S289, the control unit 211 controls the connection unit 212 to start supplying power to the high sensitivity transmitter / receiver 381, thereby turning on the power of the high sensitivity transmitter / receiver 381. The sensitivity transceiver 381 is caused to generate transmission information. This process corresponds to step S261 in FIG.

In step S290, the control unit 211 determines whether or not the transmission information is generated in the high-sensitivity transceiver 381, the transmission information is demodulated, and transmitted to the transmitter 101 as a radio signal, and is determined to be transmitted. stand by. That is, the control unit 211 stands by until a notification to that effect is received from the high sensitivity transceiver 381. If it is determined that a notification to that effect has been received from the high sensitivity transceiver 381 (when the process of step S262 in FIG. 27 is performed), the control unit 211 advances the process to step S291.

In step S291, the control unit 211 controls the connection unit 212 to end the supply of power to the high sensitivity transmitter / receiver 381, thereby turning off the power of the high sensitivity transmitter / receiver 381 and turning off the high sensitivity transmitter / receiver. The driving of 381 is terminated. This process corresponds to step S263 in FIG. When the process of step S291 ends, the power supply control process ends.

If it is determined in step S281 that the remaining charge of the power storage unit 372 is not sufficient, the power supply control process ends.

That is, only when the remaining charge amount is sufficient, the high sensitivity transceiver 381 and the LTE modem 154 are driven using the power of the power storage unit 372. By doing so, the high-sensitivity transceiver 381 and the LTE modem 154 are driven without using the power of the existing equipment (for example, without greatly affecting the power supply to the satellite antenna 142 or the like). be able to. That is, an increase in load on existing equipment can be suppressed.

In addition, by dividing the processing between the case of transmitting a radio signal and the case of receiving a wireless signal, the high sensitivity transceiver 381 can perform transmission and reception at different timings. Therefore, an increase in the power consumption peak (maximum value) of the high sensitivity transceiver 381 can be suppressed.

In the above description, the power supply control device 151 has been described as including the connection unit 371 and the power storage unit 372. However, the connection unit 371 and the power storage unit 372 may not be included as in the example of FIG. In that case, the process of step S281 may be omitted in the power supply control process of FIG.

<Others>
Note that the relay station 102 may include a transmitter similar to the transmitter 101 instead of the high sensitivity transceiver 381 described above. The transmitter in that case may be configured such that, for example, the signal receiving unit 301 and the switching unit 392 are omitted from the configuration of the high-sensitivity transceiver 381 illustrated in FIG. That is, as described in the present embodiment, relay station 102 can control the supply of power when transmitting a signal, basically in the same manner as when receiving a signal. Therefore, an increase in power consumption can be suppressed.

<4. Fourth Embodiment>
<Other configurations>
Note that the configuration of relay station 102 is not limited to the example described above in each embodiment. For example, the relay station 102 may be configured as one device. In addition, for example, in the example of FIG. 3, at least two of the power supply control device 151, the high sensitivity receiver 152, the memory 153, and the LTE modem 154 may be configured as one device. . Further, the mixer 143 may be configured as one device together with the power control device 151 and the like.

Furthermore, a plurality of configuration examples described above may be appropriately combined. For example, instead of the high sensitivity receiver 152 of the configuration example of FIG. 20, the high sensitivity transceiver 381 described in the third embodiment may be applied. In addition, the power supply control device 151 of the configuration example of FIG. 20 may include the connection unit 371 and the power storage unit 372 as described in the second embodiment. Further, for example, the relay station 102 may include other processing units not described above. The power supply control device 151 may also control the supply of power to the device. The number of devices that the power supply control device 151 controls the power supply is arbitrary.

Further, the function of the power supply control device 151 may be built in a plurality of devices. For example, as illustrated in FIG. 29, the high sensitivity receiver 152 may include the power control unit 401, and the LTE modem 154 may include the power control unit 402.

In that case, the power supply control unit 401 controls the supply of power to the high sensitivity receiver 152. The power control unit 402 controls power supply to the LTE modem 154. Each control method is the same as that of the power control device 151.

In this case, the power supply control unit 401 and the power supply control unit 402 may perform power supply control in cooperation by exchanging information with each other.

<Others>
The number of terrestrial antennas 141 to power cables 148 is arbitrary and may be plural. For example, a plurality of mixers 143 and power cables 148 may be provided. That is, a plurality of power supply paths may exist. In that case, the power supply from each path may be controlled independently of each other or may be comprehensively controlled.

In the position notification system 100, the relay station 102 to be driven may be specified by the server 104 using, for example, an ID. By limiting the relay station 102 to be driven to a part in this way, an increase in power consumption of the entire system can be suppressed.

<5. Fifth embodiment>
<Other signal transmission / reception systems>
In the above, the position notification system 100 has been described as an example, but the present technology can also be applied to systems other than the position notification system 100 described above. For example, the transmitter 101 may be installed not only on a person but also on a moving body.

For example, the present technology can also be applied to an anti-theft system 410 for preventing theft of automobiles, motorcycles and the like as shown in FIG. In the case of this anti-theft system 410, the transmitter 101 is installed on an object whose position is monitored by the user, for example, an automobile 411 or a motorcycle 412 owned by the user. As in the case of the position notification system 100, the transmitter 101 notifies the relay station 102 of its own position information (that is, position information of the automobile 411 and the motorcycle 412) as appropriate. That is, as in the case of the position notification system 100, the user can access the server 104 from the terminal device 105 and grasp the positions of the automobile 411 and the motorcycle 412. Therefore, since the user can grasp the positions of the automobile 411 and the motorcycle 412 even if it is stolen, the user can easily retrieve the automobile 411 and the motorcycle 412.

In the case of such an anti-theft system 410, the present technology can be applied to the relay station 102 as in the case of the position notification system 100. By applying the present technology, it is possible to suppress an increase in power consumption of a device (for example, the high sensitivity receiver 152) that configures the relay station 102.

Also, the information transmitted and received is arbitrary, and is not limited to the position information described above. The transmission information generation unit 261 of the transmitter 101 can generate transmission information including arbitrary information. For example, the transmission information generation unit 261 may generate transmission information including image and audio information. In addition, for example, the transmission information generation unit 261 may generate transmission information including information indicating measurement results such as temperature, distance, brightness, angle, speed, and acceleration. Further, for example, the transmission information generation unit 261 may generate transmission information including control information for controlling the device. Further, for example, the transmission information generation unit 261 may generate transmission information including other information. Further, for example, the transmission information generation unit 261 may generate transmission information including a plurality of information.

Also, for example, the transmission information generation unit 261 may generate transmission information including information supplied from another device. For example, the transmission information generation unit 261 may include an image, light, brightness, saturation, electricity, sound, vibration, acceleration, speed, angular velocity, force, temperature (not temperature distribution), humidity, distance, area, volume, shape, Generates transmission information including information (sensor output) output from various sensors that perform detection or measurement for any variable such as flow rate, time, time, magnetism, chemical substance, odor, or the amount of change. You may do it.

That is, the present technology is not limited to the system that notifies the position information as described above, but includes, for example, three-dimensional shape measurement, spatial measurement, object observation, movement deformation observation, biological observation, authentication processing, monitoring, autofocus, and imaging control. , Lighting control, tracking processing, input / output control, electronic device control, actuator control, etc.

In addition, the present technology can be applied to a system in an arbitrary field such as traffic, medical care, crime prevention, agriculture, livestock industry, mining, beauty, factory, home appliance, weather, and nature monitoring. For example, the present technology can also be applied to a system that captures an image for viewing using a digital camera, a portable device with a camera function, or the like. In addition, for example, this technology monitors in-vehicle systems, traveling vehicles, and roads that photograph the front, rear, surroundings, and interiors of automobiles for safe driving such as automatic stop and recognition of the driver's condition. The present invention can also be applied to a system used for traffic, such as a surveillance camera system that performs a distance measurement between vehicles or the like. Furthermore, for example, the present technology can also be applied to a system provided for security using a security camera for surveillance purposes, a camera for personal authentication purposes, or the like. In addition, for example, the present technology can also be applied to a system provided for sports using various sensors that can be used for sports applications such as a wearable camera. Furthermore, for example, the present technology can also be applied to a system used for agriculture using various sensors such as a camera for monitoring the state of a field or crop. In addition, for example, the present technology can also be applied to a system used for livestock industry that uses various sensors for monitoring the state of livestock such as pigs and cows. Furthermore, the present technology can be applied to systems that monitor natural conditions such as volcanoes, forests, and oceans, meteorological observation systems that observe weather, temperature, humidity, wind speed, sunshine hours, and so on, such as birds, fish, and insects. It can also be applied to a system for observing the ecology of wildlife such as moss, amphibians, mammals, insects and plants.

Furthermore, the specifications of radio signals and information transmitted and received are arbitrary. That is, the present technology can be applied to an arbitrary signal transmission / reception system (an apparatus of a relay station) having the above-described configuration in each embodiment.

<Computer>
The series of processes described above can be executed by hardware or can be executed by software. When a series of processing is executed by software, for example, the control unit 211 of the power supply control device 151, the transmission information generation unit 261 of the transmitter 101, the control unit 331 of the high sensitivity receiver 152, the control unit 351 of the LTE modem 154, The control unit 331 of the sensitivity transceiver 381, the power control unit 401, the control unit 211 of the power control unit 402, and the like may be configured as a computer that can execute the software. Examples of the computer include a computer incorporated in dedicated hardware and a general-purpose computer capable of executing an arbitrary function by installing various programs.

FIG. 31 is a block diagram showing an example of the hardware configuration of a computer that executes the above-described series of processing by a program.

In a computer 600 shown in FIG. 31, a CPU (Central Processing Unit) 611, a ROM (Read Only Memory) 612, and a RAM (Random Access Memory) 613 are connected to each other via a bus 614.

An input / output interface 620 is also connected to the bus 614. An input unit 621, an output unit 622, a storage unit 623, a communication unit 624, and a drive 625 are connected to the input / output interface 620.

The input unit 621 includes arbitrary input devices such as a keyboard, a mouse, a touch panel, an image sensor, a microphone, a switch, and an input terminal. The output unit 622 includes an arbitrary output device such as a display, a speaker, and an output terminal, for example. The storage unit 623 includes an arbitrary storage medium such as a hard disk, a RAM disk, a nonvolatile memory such as an SSD (Solid State Drive) or a USB (Universal Serial Bus) memory. The communication unit 624 is, for example, any communication standard such as Ethernet (registered trademark), Bluetooth (registered trademark), USB, HDMI (registered trademark) (High-Definition Multimedia Interface), IrDA, wired or wireless, or both. Communication interface. The drive 625 drives a removable medium 631 having an arbitrary storage medium such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory.

In the computer configured as described above, the CPU 611 loads the program stored in the storage unit 623 into the RAM 613 via the input / output interface 620 and the bus 614 and executes the program, for example. Is performed. The RAM 613 also appropriately stores data necessary for the CPU 611 to execute various processes.

The program executed by the computer (CPU 611) can be recorded and applied to, for example, a removable medium 631 as a package medium or the like. In that case, the program can be installed in the storage unit 623 via the input / output interface 620 by attaching the removable medium 631 to the drive 625.

This program can also be provided via a wired or wireless transmission medium such as a local area network, the Internet, or digital satellite broadcasting. In that case, the program can be received by the communication unit 624 and installed in the storage unit 623.

In addition, this program can be installed in the ROM 612 or the storage unit 623 in advance.

The program executed by the computer may be a program that is processed in time series in the order described in this specification, or in parallel or at a necessary timing such as when a call is made. It may be a program for processing.

Further, in the present specification, the step of describing the program recorded on the recording medium is not limited to the processing performed in chronological order according to the described order, but may be performed in parallel or It also includes processes that are executed individually.

Further, the processing of each step described above can be executed in each device described above or any device other than each device described above. In that case, the device that executes the process may have the functions (functional blocks and the like) necessary for executing the process described above. Information necessary for processing may be transmitted to the apparatus as appropriate.

In this specification, the system means a set of a plurality of components (devices, modules (parts), etc.), and it does not matter whether all the components are in the same housing. Accordingly, a plurality of devices housed in separate housings and connected via a network and a single device housing a plurality of modules in one housing are all systems. .

Also, in the above, the configuration described as one device (or processing unit) may be divided and configured as a plurality of devices (or processing units). Conversely, the configurations described above as a plurality of devices (or processing units) may be combined into a single device (or processing unit). Of course, a configuration other than that described above may be added to the configuration of each device (or each processing unit). Furthermore, if the configuration and operation of the entire system are substantially the same, a part of the configuration of a certain device (or processing unit) may be included in the configuration of another device (or other processing unit). .

The preferred embodiments of the present disclosure have been described in detail above with reference to the accompanying drawings, but the technical scope of the present disclosure is not limited to such examples. It is obvious that a person having ordinary knowledge in the technical field of the present disclosure can come up with various changes or modifications within the scope of the technical idea described in the claims. Of course, it is understood that it belongs to the technical scope of the present disclosure.

For example, the present technology can take a configuration of cloud computing in which one function is shared by a plurality of devices via a network and is jointly processed.

Further, each step described in the above flowchart can be executed by one device or can be shared by a plurality of devices.

Further, when a plurality of processes are included in one step, the plurality of processes included in the one step can be executed by being shared by a plurality of apparatuses in addition to being executed by one apparatus.

In addition, the present technology is not limited to this, and any configuration mounted on such a device or a device constituting the system, for example, a processor as a system LSI (Large Scale Integration), a module using a plurality of processors, a plurality of It is also possible to implement as a unit using other modules, a set obtained by further adding other functions to the unit (that is, a partial configuration of the apparatus), and the like.

In addition, this technique can also take the following structures.
(1) An information processing apparatus including a control unit that controls supply of the power to the reception unit so that power is supplied when the reception unit that receives a radio signal is driven.
(2) The control unit controls the supply of the extracted power supplied to the reception unit by being superimposed on the broadcast wave signal via a coaxial cable that transmits the broadcast wave signal received by the antenna. The information processing apparatus according to (1).
(3) The control unit
Starting the supply of power to the receiving unit, causing the receiving unit to receive the wireless signal, and storing information obtained from the received wireless signal in a storage unit;
The information processing apparatus according to (1) or (2), wherein when the notification that the information is stored in the storage unit is acquired, the supply of the power to the reception unit is terminated.
(4) The information processing apparatus according to any one of (1) to (3), further including the reception unit.
(5) The control unit controls the supply of the power supplied, extracted, and stored in the power storage unit to the reception unit while being superimposed on the signal via the coaxial cable. The information processing apparatus according to any one of 4).
(6) The information processing apparatus according to (5), wherein the control unit prohibits the supply of the power to the receiving unit when the power storage amount of the power storage unit is less than a predetermined threshold.
(7) The control unit further controls power storage in the power storage unit of the extracted power supplied and superimposed on the signal via the coaxial cable. (5) or (6) Information processing device.
(8) The information processing apparatus according to (7), wherein the control unit prohibits the storage of the electric power in the power storage unit when the power storage amount of the power storage unit is greater than a predetermined threshold.
(9) The information processing apparatus according to (7) or (8), wherein the control unit causes the power storage unit to store the power in a predetermined time period.
(10) The information processing apparatus according to any one of (5) to (9), further including the power storage unit.
(11) The control unit further controls supply of the power to the transmission unit such that power is supplied when the transmission unit that transmits a radio signal is driven. (1) to (10) An information processing apparatus according to claim 1.
(12) The control unit
Starting the supply of power to the transmission unit, causing the transmission unit to generate transmission information, causing the generated transmission information to be transmitted as the radio signal,
The information processing apparatus according to (11), wherein when receiving a notification that the wireless signal has been transmitted, the supply of the power to the transmission unit is terminated.
(13) The information processing apparatus according to (11) or (12), further including the transmission unit.
(14) The control unit further controls the supply of the power to the communication unit so as to supply power when a communication unit that communicates with another communication device is driven. ).
(15) The control unit
Starting the supply of power to the communication unit, causing the communication unit to read the information from a storage unit that stores information obtained from the radio signal received by the reception unit, and reading the information To the other communication device by the communication,
The information processing apparatus according to (14), wherein when the notification that the information is supplied to the other communication apparatus is acquired, the supply of the power to the communication unit is terminated.
(16) The information processing apparatus according to (14) or (15), further including the communication unit.
(17) The information processing apparatus according to (15) or (16), further including the storage unit.
(18) The information processing apparatus according to any one of (1) to (17), wherein the reception unit receives the wireless signal in a frequency band including 925 MHz.
(19) An information processing method for controlling supply of power to the reception unit so that the information processing apparatus supplies power when a reception unit that receives a radio signal is driven.
(20)
The program for functioning as a control part which controls supply of the electric power to the receiving part so that electric power is supplied when the receiving part which receives a radio signal drives.

100 location notification system, 101 transmitter, 102 relay station, 103 network, 104 server, 130 building, 131 rooftop equipment, 143 mixer, 144 to 146 antenna cable, 148 power cable, 151 power control device, 152 high sensitivity reception Machine, 153 memory, 154 LTE modem, 161 GNSS satellite, 185 PF, 186 mixing section, 191 to 193 inductor, 194 to 196 capacitor, 201 to 196 power supply terminal, 211 control section, 212 connection section, 301 signal receiving section, 302 Reception information processing unit, 303 bus, 330 bus, 331 control unit, 332 memory, 333 demodulation unit, 334 GNSS signal reception unit, 335 information processing Unit, 336 communication unit, 337 power supply unit, 350 bus, 351 control unit, 352 memory, 353 communication unit, 354 power supply unit, 355 LTE communication unit, 361 router, 362 signal cable, 363 mixer, 371 connection unit, 372 power storage Unit, 381 high sensitivity transceiver, 391 signal transmission / reception unit, 392 switching unit, 393 signal transmission unit, 394 PLL, 395 oscillation unit, 396 LNA, 397 modulation / demodulation unit, 401 power supply control unit, 402 power supply control unit, 410 anti-theft system , 600 computers

Claims

An information processing apparatus comprising: a control unit that controls supply of the power to the receiving unit so that power is supplied when a receiving unit that receives a radio signal is driven.
2. The control unit controls supply of the extracted power supplied to the reception unit, superimposed on the broadcast wave signal via a coaxial cable that transmits a broadcast wave signal received by an antenna. The information processing apparatus described in 1.
The controller is
Starting the supply of power to the receiving unit, causing the receiving unit to receive the wireless signal, and storing information obtained from the received wireless signal in a storage unit;
The information processing apparatus according to claim 1, wherein when the notification that the information is stored in the storage unit is acquired, the supply of the power to the reception unit is terminated.
The information processing apparatus according to any one of claims 1 to 3, further comprising the receiving unit.
The control unit controls the supply of the electric power supplied and extracted by being superimposed on the signal via the coaxial cable, extracted, and stored in the power storage unit to the reception unit. The information processing apparatus according to any one of the above.
The information processing apparatus according to claim 5, wherein the control unit prohibits the supply of the power to the receiving unit when the amount of power stored in the power storage unit is smaller than a predetermined threshold.
7. The information processing according to claim 5, wherein the control unit further controls storage of the extracted power that is supplied and superimposed on the signal via the coaxial cable to the power storage unit. 8. apparatus.
The information processing apparatus according to claim 7, wherein the control unit prohibits the storage of the electric power in the power storage unit when the power storage amount of the power storage unit is greater than a predetermined threshold.
The information processing apparatus according to claim 7, wherein the control unit causes the power storage unit to store the electric power in a predetermined time zone.
The information processing apparatus according to claim 5, further comprising the power storage unit.
The said control part further controls supply of the said electric power to the said transmission part so that it may supply electric power when the transmission part which transmits a radio signal drives. Information processing device.
The controller is
Starting the supply of power to the transmission unit, causing the transmission unit to generate transmission information, causing the generated transmission information to be transmitted as the radio signal,
The information processing apparatus according to claim 11, wherein when receiving a notification that the wireless signal has been transmitted, the supply of the power to the transmission unit is terminated.
The information processing apparatus according to claim 11, further comprising the transmission unit.
The control unit further controls supply of the power to the communication unit so as to supply power when a communication unit that communicates with another communication device is driven. An information processing apparatus according to claim 1.
The controller is
Starting the supply of power to the communication unit, causing the communication unit to read the information from a storage unit that stores information obtained from the radio signal received by the reception unit, and reading the information To the other communication device by the communication,
The information processing apparatus according to claim 14, wherein when receiving a notification that the information is supplied to the other communication apparatus, the supply of the power to the communication unit is terminated.
The information processing apparatus according to claim 14, further comprising the communication unit.
The information processing apparatus according to claim 15 or 16, further comprising the storage unit.
The information processing apparatus according to claim 1, wherein the reception unit receives the radio signal in a frequency band including 925 MHz.
An information processing method for controlling supply of the power to the reception unit such that the information processing apparatus supplies power when the reception unit that receives a radio signal is driven.
Computer
The program for functioning as a control part which controls supply of the electric power to the receiving part so that electric power is supplied when the receiving part which receives a radio signal drives.