JPH08237731A - Base station device and base station line control device - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a CS and a base station concentrator (CCE) capable of effectively using equipment such as a base station (CS) and a transmission line, and improve frequency utilization efficiency,
It is intended to save the labor required for installing equipment and provide a PHS service without impairing the aesthetics of the installation space. [Structure] The CCE 203 is a public PH of each of the operators A to C.
S networks 202A to 202C and private branch exchange (PBX) 2
CS209 connected to 04 and wirelessly communicating with public PS
Connected to. Then, in the buffer unit 207, the signals from the public PHS network and the private branch exchange 204 are respectively delayed and synchronized. That is, the frame synchronization of the signals of each frequency is achieved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a simplified mobile phone system (hereinafter referred to as a personal handyphone system (PH
The present invention relates to a base station device and a base station line control device for a communication service utilizing S).

[0002]

2. Description of the Related Art With the spread of PHS, in a semi-public space such as a department store or an amusement park where a large number of unspecified people enter and leave, a PHS terminal for private use (hereinafter referred to as "PS for private use") used by employees working in that space. It is conceivable that a PHS terminal for public use (hereinafter, “PS for public use”) used by general customers visiting the space are mixed.

In such cases, PS for private use and public use
In order to provide communication (call) service to both of them, the private PS and the public PS that connect the private PS to the PBX
A public base station device for connecting the public base station to the public PHS network will be installed. Further, when there are a plurality of PHS providers, the communication system in the space is constructed taking into consideration that the public PS subscribed to each PHS service exists (is located) in the semi-public space. This is necessary, and specifically, as shown in FIG. 4, separate public base station devices will be installed in the semi-public space for each PHS operator.

[0004]

As described above, as shown in FIG.
In the configuration shown in (1), the base station device must be installed independently for each PHS carrier. Therefore, when the traffic in each base station device is small, each facility including the base station device (hereinafter referred to as CS) and the transmission line between the public CS and the public PHS network are sufficiently effectively used. There is a problem that is not done.

Further, since a large number of base station devices must be installed in the semi-public space, there are problems that the aesthetic appearance of the semi-public space such as a department store is spoiled and installation work of various equipments increases. Furthermore, since the physical slots of the radio waves transmitted from the private CS and the public CS of each PHS operator are not synchronized, when the CSs are installed close to each other, they are transmitted from different CSs. Radio wave 2
It will be used across two physical slots. Therefore, there is a problem that the utilization efficiency of the frequency decreases.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a base station apparatus and a base station line concentrator control apparatus that can effectively use equipment such as a base station apparatus and a transmission line. . Further, as another object of the present invention,
Improve frequency utilization efficiency, save time and effort for equipment installation, PHS without spoiling aesthetics of installation space
May provide services.

[0007]

A base station line concentrator (CCE) according to claim 1 is connected to at least one of a plurality of public personal handyphone networks and private branch exchanges (PBX) of different operators, and A base station concentrator control device connected to a base station device (CS) that wirelessly communicates with a personal handyphone terminal, the buffer unit delaying and synchronizing each signal from the public personal handyphone network and a private branch exchange. And transmitting each signal synchronized by the buffer unit to the base station apparatus.

According to a second aspect of the present invention, there is provided a base station line concentrator control device according to the first aspect, which stores a route selection section for selecting a base station device used for wireless communication and position information of the personal handyphone terminal. And a base station line concentrator control device control unit that controls connection to the route selection unit based on the position information, a preset connection priority order, and a radio frequency usage state. There is.

A base station apparatus according to a third aspect is a base station apparatus connected to the base station concentrator control apparatus according to the first or second aspect, and controls a transmission / reception frequency of the base station apparatus based on an input signal. The synthesizer section that stores the frequency information for each operator, and transmits and receives a control signal including call control, radio management, and mobility management information between the base station concentrator control device and a personal handy signal from the control signal. The type information of the phone terminal and the identification information of the business operator to which the personal handy phone terminal subscribes are extracted, and a frequency switching control signal based on the type information, the identification information and the frequency information is sent to the synthesizer unit. While inputting, the control between the personal handyphone terminal and the public personal handyphone network or private branch exchange is performed for each of the type information and the identification information. It is characterized by comprising a base station apparatus control unit which performs time-sharing control for sharing the signal communication path.

[0010]

A base station line concentrator (CCE) according to claim 1.
Is connected to at least one of a plurality of public personal handyphone networks and private branch exchanges (PBX) of different operators, and is connected to a base station device (CS) that wirelessly communicates with the personal handyphone terminal. Then, in the buffer section, the signals from the public personal handyphone network and the private branch exchange are respectively delayed and synchronized. According to the base-station concentrator control device according to claim 2, the base-station concentrator control device control unit is based on the position information of the personal handyphone terminal, the preset connection priority, and the radio frequency usage status. Connection control is performed for the route selection unit. Therefore, it becomes possible to perform competition control for the route selection unit at the time of congestion.

According to another aspect of the base station apparatus, the synthesizer section controls the transmission / reception frequency of the base station apparatus based on the input signal. Further, the base station device control unit stores frequency information for each of the carriers, transmits and receives control signals including call control, radio management, and mobility management information to and from the base station line concentrator control device, and Extracting from the signal the type information of the personal handyphone terminal and the identification information of the operator to which the personal handyphone terminal subscribes,
A frequency switching control signal based on the type information, the identification information, and the frequency information is input to the synthesizer unit, and the personal handyphone terminal and the public personal handyphone network or the personal handyphone terminal for each of the type information and the identification information. Control signals between private branch exchanges The time sharing control is performed to share the communication path.

[0012]

DESCRIPTION OF THE PREFERRED EMBODIMENTS First, a schematic configuration of a PHS base station line concentrator and a PHS base station apparatus according to an embodiment of the present invention will be described. The PHS base station line concentrator (hereinafter referred to as "CCE") according to the present embodiment is provided between each signal from each public personal handyphone network (hereinafter referred to as "public PHS network") and a private branch exchange (PBX). The greatest feature is that it absorbs the delay time difference. Furthermore, the above CCE
Is a PHS base station device used for wireless communication (hereinafter, "C
S) is selected, and the position information of each personal handyphone terminal is stored, and the route is selected based on the position information, preset connection priority, and radio frequency usage status. It is characterized in that a control unit for controlling connection to the selection unit is provided.

Further, the CCE takes frame synchronization,
With reference to the means for matching the physical slots on the air interface, the position information in the control unit of the CCE, the preset priority list of connections, and the usage status of radio frequencies, contention control for the route selection unit is performed. By performing the above, a means for securing a call with a high priority (priority) at the time of congestion, and when two or more CSs are connected, select which CS is connected to the line according to the call origination / reception, It has means for storing priority information for preferentially securing a call during congestion. In addition, the CS and its own control unit and CCE
From the call control, radio management, and mobility management information included in the control signals between the two, information on whether the PS is for private use or PS for public use and the PHS operator (operator code) to which the PS subscribes is extracted, and is extracted. It has a means for controlling the transmission / reception frequency of its own CS by converting it into a frequency switching control signal and inputting it to the synthesizer section.

An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 shows a PH according to an embodiment of the present invention.
3 is a block diagram showing the configurations of an S radio base station (CS) 209 and a PHS base station line concentrator (CCE) 203, FIG.
In this figure, 201 is a public switched telephone network (PSTN /
ISDN), 202A to 202C are PHS operators A to C
Is a public PHS network, and 204 is a private branch exchange (PBX) connected to the public switched telephone network 201.

In the CCE 203, 205 is a DSU
(Data Synchronizer Unit) unit, 206 is a CCE control unit, 207 is a buffer unit, 208 is a route selection unit,
Each buffer unit 207 is connected to each DSU unit 205 and PBX.
204 is provided between the route selection unit 208 and the route selection unit 208, and is controlled by the CCE control unit 206.
The signals from the B, 202C and the public switched telephone network 201 are temporarily stored and sent to the route selection unit 208.
The signals from the route selection unit 20 are temporarily stored and stored in the public PHS networks 202A, 202B, 202C and the public switched telephone network 2.
Send to the 01 side. Further, 210 is a three-channel communication signal path, and 211 is a one-channel control signal path, and one ends of both are connected to the route selection unit 208 of the CCE 203.

In CS209, 212 is ADPCM
(Adaptive Differential Pulse Code Modulation) A codec unit to which the other end of the call signal path 210 is connected. 213 is a TDMA (Time Division Multiple Access) connected to the ADPCM codec unit 212.
) Processing unit, 214 is a modulation / demodulation unit connected to the TDMA processing unit, and 215 is a CS connected to the TDMA processing unit 213.
The control unit 216 is a synthesizer unit, and the CS control unit 2
The other end of the control signal path 211 is connected to 15. The CS control unit 215 also supplies a frequency switching control signal to the synthesizer unit 216.

Reference numeral 217 is a frequency conversion unit connected to the demodulation unit 214 and the synthesizer unit 216.
Two are provided in 09. These frequency conversion units 217
Among them, one frequency conversion unit 217 has a modulation / demodulation unit 214
The frequency conversion unit 217 supplies the frequency-converted signal to the modulation / demodulation unit 214. Reference numeral 218 is a power amplification unit connected to one frequency conversion unit 217, and 219 is a reception amplification unit connected to the other frequency conversion unit 217, both of which are connected to an antenna unit 220.

Next, the CS 209 and CC having the above-mentioned structure
The operation of E203 will be described. However, the operation described here is an operation under a predetermined condition, and its precondition will be described below. (Α) Intermittent Transmission Cycle First, the intermittent transmission cycle of the control channel will be described.
The control channel is stipulated to intermittently transmit data, and its cycle is stipulated as a standard of 100 msec for public use and 125 msec or more for private use (second generation cordless telephone system standard RCRSTD-28).
According to the above rule, it is possible to select any value of 125 msec or more as the intermittent transmission cycle of the private control channel, but by setting the intermittent transmission cycle of the control channel short, the time required for control can be shortened. , The intermittent transmission cycle of the private control channel is 125 mse
This will be described as c. The intermittent transmission cycle of the public control channel is 100 msec.

(Β) Radio Frequency of Control Channel Next, the radio frequency of the control channel will be described.
In the following description, it is assumed that the number of public PHS operators is 3, and a radio frequency for control is assigned to each. Here, the public control channel frequencies of the PHS operators A, B, and C are fA, fB, and fC, respectively, and the private control channel frequency is fD.

Each control performed under such a premise will be described. (1) Physical Slot Timing Control First, physical slot timing control will be described.
The CCE 203 is a public PHS network 202A, 202B, 2
The call signal and the control signal are exchanged between the 02C and the CCE 203 by the time division direction control transmission method.

Public PHS networks 202A, 202B, 202
The C and PBX 204 are bit-synchronized by the network synchronization method between the operators, but the public PHS networks 202A, 202
Due to the difference in the internal configuration of the B, 202C, and PBX 204, the delay times generated therein are not necessarily equal.
Therefore, these frame synchronizations are not generally established. In order to share the CS 209 with a private PHS terminal (hereinafter referred to as “private PS”) and a public PHS terminal (hereinafter referred to as “public PS”), each buffer unit 207 of the CCE 203 may use the CS 209 as necessary. Delay signal, CS
It is possible to match the timing of each signal when the radio wave is emitted from 220.

(2) Frequency Switching Control Next, frequency switching control will be described. FIG. 2 is a diagram showing an example of use of public control channel frequencies fA, fB, fC, private control channel frequency fD, public call channel frequency fX, and private call channel frequency fY.
In the example shown in this figure, PHS operators A, B, and C have public control channels (total of 3 channels), private control channels (1 channel), public communication channels (2 channels), and private use channels. The communication channel (1 channel) is arranged so that the transmission waves do not overlap in the same physical slot.

In the example shown in FIG. 2, a frequency switching control signal is supplied from the CS control section 215 to the synthesizer section 216 based on the timing and frequency shown in the figure.
The transmission frequency and the reception frequency of the CS 209 are controlled.
In practice, a plurality of frequencies are assigned as public and private voice channel frequencies, but here, for the sake of convenience of explanation, both use the first voice channel frequency.

A more concise description will be made below with reference to FIG. FIG. 3 is a diagram showing the time slots of FIG. 2 in units of TDMA frames, and shows transmission frames of the public control channel (3 channels) and the private control channel (1 channel). In FIG. 3, each TDMA frame is marked * 1 from the beginning (time slots # 1 to # 8 in FIG. 2).
* 2 (corresponding to # 9 to # 16), * 3 (corresponding to # 17 to # 24), ...
Is represented.

In the TDMA frame (5 msec width),
It is stipulated that a control physical slot for one time slot is arranged for each uplink / downlink (RCRSTD
-28) Therefore, in this embodiment, for each TDMA frame,
Physical slots having public control channel frequencies fA, fB, fC and private control channel frequency fD are arranged. As described above, the public control channel frequencies fA, fB,
Since the intermittent transmission cycle of fC is 100 msec (corresponding to 20 frames in the TDMA frame), if the transmission timings of the three parties are shifted by 5 msec (corresponding to 1 frame in the TDMA frame) and transmitted, signal collision occurs. Can be avoided.

On the other hand, the cycle of the private-use control channel frequency fD is set to 125 msec (corresponding to 25 frames in the TDMA frame) as described above, and the transmission is performed by selecting the timing so as not to collide with other transmission signals. There is a need to. An example of the slot arrangement in which the public control channel (3 channels) and the private control channel (1 channel) do not collide is the slot arrangement shown in FIG.

(3) Competitive Control Next, competitive control will be described separately for the incoming system and the outgoing system. Incoming Call System First, the incoming call system will be described. For public PS or private PS existing within the same CS coverage,
An incoming connection request may come in from the public PHS network or PBX side over the call channel capacity (3 channels) per base station device. The CCE control unit 206 of the CCE 203 performs a connection process according to the usage status of the radio frequency and the priority order of the connection registered in advance, and
A busy signal (BUSY) is returned to the overflowed call.

Here, for example, the PBX 204 and the public P
It is assumed that incoming connection requests are simultaneously input from the HS networks 202A, 202B, and 202C to each PS existing (located in the semi-public space). If the priority of the public PHS network 202C is set to the lowest in the CCE control unit 206, the PBX 204 and the public PHS network 20 are assumed.
Incoming connections from 2A and 202B are processed, but public P
The connection request from the HS network 202C is rejected and a busy signal is returned.

(2) Transmission system Next, the transmission system will be described. In some cases, the outgoing connection request from the public PS or private PS existing within the area covered by the same CS exceeds the call channel capacity per 1 CS. In this case, similar to the call-in system, connection processing is performed by referring to the usage status of the radio frequency and the priority order registered in advance, and a link channel assignment refusal message is returned to the overflowed PS.

As described above, according to the embodiment of the present invention, in the buffer unit 207, the public PHS network 2 is used.
Each of the signals from 02A to 202C and the private branch exchange 204 is delayed and synchronized. That is, the frame synchronization of the signal of each frequency can be achieved. Also,
The CCE control unit 206 controls the connection to the route selection unit 208 based on the position information of the public PS and the private PS, the preset priority order of the connection, and the use status of the radio frequency. Therefore, at the time of congestion, the route selection unit 208
It is possible to control contention for. Furthermore, CCE203
Is a time-division control for sharing the control signal communication path between the terminal and the public PHS network or the private branch exchange for each type information of the terminal and the identification information of the operators A to C, that is, a process of shifting the transmission timing by 5 msec. To do. Therefore, one CS can transmit and receive the private frequency and the public frequency.

[0031]

As described above, according to the present invention,
The base station line concentrator (CCE) is provided by a plurality of public personal handyphone networks and private branch exchanges (P
BX) and is connected to a base station device (CS) that wirelessly communicates with a personal handyphone terminal. Then, in the buffer section, the signals from the public personal handyphone network and the private branch exchange are respectively delayed and synchronized. That is, there is an effect that the frame synchronization of the signal of each frequency can be achieved (Claim 1).

Further, the base station line concentrator control device control unit controls the connection to the route selection unit based on the position information of the personal handyphone terminal, the preset connection priority order and the radio frequency usage status. I do. Therefore, there is an effect that competition control can be performed for the route selection unit at the time of congestion (claim 2).

Further, the synthesizer section of the base station device controls the transmission / reception frequency of the base station device based on the input signal. In addition, the base station device control unit stores frequency information for each of the carriers, transmits and receives control signals including call control, radio management and movement management information to and from the base station line concentrator control device, and The type information of the personal handyphone terminal and the identification information of the operator to which the personal handyphone terminal subscribes are extracted from the signal, and a frequency switching control signal based on the type information, the identification information, and the frequency information is extracted. While inputting to the synthesizer unit, time-division control is performed in order to share a control signal communication path between the personal handyphone terminal and the public personal handyphone network or private branch exchange for each of the type information and the identification information. Therefore, there is an effect that one base station device can transmit and receive the private frequency and the public frequency (claim 3).

As described above, according to the present invention, the base station devices of the public personal handyphone network and the premises network of a plurality of operators can be shared, so that the number of base station devices to be installed can be reduced, which is economical. There is an effect that various system configurations and effective use of frequencies can be realized. Also,
This has the effect of solving aesthetic and construction problems in the installation space.

[Brief description of drawings]

FIG. 1 is a diagram illustrating an example of the present invention.

FIG. 2 is a configuration diagram of time slots for explaining an embodiment of the present invention.

FIG. 3 is a diagram showing timings of public / private control channels for explaining an embodiment of the present invention.

FIG. 4 is a diagram for explaining a conventional technique.

[Description of Reference Signs] 201 ... Public switched telephone network, 202A, 202B, 202
C ... Public PHS network, 203 ... Base station line control device (CC
E), 204 ... Private branch exchange (PBX), 205 ... DSU
Part, 206 ... CCE control part, 207 ... buffer part, 20
8 ... Route selection unit, 209 ... Base station device (CS), 210
... call signal path, 211 ... control signal path, 212 ... ADPC
M codec unit, 213 ... TDMA processing unit, 214 ...
Modulation / demodulation unit, 215 ... CS control unit, 216 ... Synthesizer unit, 217 ... Frequency conversion unit, 218 ... Power amplification unit, 21
9 ... Receiving / amplifying unit, 220 ... Antenna unit.

Claims (3)

[Claims] 1. A base station concentrator control device which is connected to at least one of a plurality of public personal handyphone networks and private branch exchanges of different operators and which is connected to a base station device which wirelessly communicates with a personal handyphone terminal. And a buffer unit for delaying and synchronizing each signal from the public personal handyphone network and the private branch exchange, and transmitting each signal synchronized by the buffer unit to the base station device. Base station concentration control device. 2. A route selecting unit for selecting a base station device used for wireless communication, and storing position information of the personal handyphone terminal,
It is characterized by further comprising: a base station line concentrator control device control unit for performing connection control to the route selection unit based on the position information, a preset priority order of connection, and a use status of radio frequencies. The base station line concentration control device according to claim 1. 3. A base station apparatus connected to the base station line concentrator control apparatus according to claim 1, wherein the synthesizer unit controls a transmission / reception frequency of the base station apparatus based on an input signal, and the business operator. Frequency information for each is stored, and a control signal including call control, radio management, and mobility management information is transmitted to and received from the base station line concentrator, and the type information of the personal handyphone terminal and the personal information are transmitted from the control signal. The identification information of the operator to which the handy phone terminal is subscribed is extracted, and a frequency switching control signal based on the type information, the identification information, and the frequency information is input to the synthesizer unit, and the type information and the For each piece of identification information,
A base station apparatus comprising: a base station apparatus control unit for performing time division control for sharing a control signal communication path between the personal handyphone terminal and the public personal handyphone network or a private branch exchange.