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WO1992013395A1 - Procede et appareil de commande d'un recepteur - Google Patents

Procede et appareil de commande d'un recepteur Download PDF

Info

Publication number
WO1992013395A1
WO1992013395A1 PCT/US1992/000595 US9200595W WO9213395A1 WO 1992013395 A1 WO1992013395 A1 WO 1992013395A1 US 9200595 W US9200595 W US 9200595W WO 9213395 A1 WO9213395 A1 WO 9213395A1
Authority
WO
WIPO (PCT)
Prior art keywords
time
time period
receiver
data
parameter
Prior art date
Application number
PCT/US1992/000595
Other languages
English (en)
Inventor
Thomas R. Klaus
Original Assignee
Motorola, Inc.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Motorola, Inc. filed Critical Motorola, Inc.
Publication of WO1992013395A1 publication Critical patent/WO1992013395A1/fr
Priority to GB9222171A priority Critical patent/GB2261140B/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40006—Architecture of a communication node
    • H04L12/40013—Details regarding a bus controller
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F13/00—Interconnection of, or transfer of information or other signals between, memories, input/output devices or central processing units
    • G06F13/38—Information transfer, e.g. on bus
    • G06F13/42—Bus transfer protocol, e.g. handshake; Synchronisation
    • G06F13/4204—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus
    • G06F13/4221—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus
    • G06F13/423—Bus transfer protocol, e.g. handshake; Synchronisation on a parallel bus being an input/output bus, e.g. ISA bus, EISA bus, PCI bus, SCSI bus with synchronous protocol
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/06—Receivers
    • H04B1/16—Circuits
    • H04B1/1607—Supply circuits
    • H04B1/1615—Switching on; Switching off, e.g. remotely
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/40052—High-speed IEEE 1394 serial bus
    • H04L12/40071—Packet processing; Packet format
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L12/00—Data switching networks
    • H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
    • H04L12/40—Bus networks
    • H04L12/4013—Management of data rate on the bus
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/22—Parsing or analysis of headers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. Transmission Power Control [TPC] or power classes
    • H04W52/02—Power saving arrangements
    • H04W52/0209—Power saving arrangements in terminal devices
    • H04W52/0225—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal
    • H04W52/0245—Power saving arrangements in terminal devices using monitoring of external events, e.g. the presence of a signal according to signal strength
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D10/00—Energy efficient computing, e.g. low power processors, power management or thermal management
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Definitions

  • This invention generally relates to controlling the on-time of a receiver and more specifically to adaptively controlling the on-time of a radio receiver to minimize its power consumption.
  • radio frequency signal receivers control their power consumption in a radiotelephone.
  • the first way is to turn the receiver on with the radiotelephone and leave it on during the entire operation.
  • the second way is to activate the receiver in anticipation of receiving radio frequency signals of interest in an effort to reduce the amount of power consumption.
  • the receiver When a receiver is used in a system where radio frequency signals are transmitted at known intervals, such as in a time division multiplexed system, the receiver can know the point in time when the receiver should be active. If the receiver is synched with the remote transmitter, the radio receiver can be turned on in anticipation of a data signal from the transmitter and turned off after receiving the data signal from the remote transmitter. Currently, this anticipation is used in some radiotelephones, such as model #TZ803 available from Motorola, Inc..
  • a microprocessor external to the receiver is used to control the on-time for the receiver. The on-time must account for rise times of the components and the lock time for the frequency synthesizer. The on-time is calculated using the worst case timing analysis for the different parts of the receiver circuitry which compensates for changes in the frequency, the temperature and the component specifications.
  • a radio frequency signal containing a data frame which needs to be received can last 40 milliseconds (mS) and typically a radiotelephone would receive one of every eight frames. Therefore, the receiver including the frequency synthesizer needs to be operational for forty milliseconds, then can be off for 280 mS.
  • the worse case lock time of the frequency synthesizer is 100 milliseconds over temperature, frequency and component tolerance. To account for the worst case timing, the frequency synthesizer is turned on 100 mS earlier than the anticipated arrival of the radio frequency signal of interest. Therefore, the frequency synthesizer is on for approximately 44% of the time.
  • the worst case rise time of the other receiver circuitry is 20 milliseconds, therefore, this receiver circuitry is on approximately 18% of the time.
  • the worst case times which are used to calculate these turn-on times are uncommon, therefore, the frequency synthesizer and the receiver circuitry are often on for longer periods of time than is necessary.
  • the worst case times are uncommon because they account for the theoretical extremes of operation.
  • the lock-times and rise times change with the changes in temperature and the frequency of the frequency synthesizer; rarely meeting the worst case times. Therefore, a need exists for an adaptive controller of the radio receiver on-time which compensates for the frequency of the receive signals, the current temperature of the radiotelephone and for the component variations of the specific receiver.
  • the present invention encompasses a method of controlling a receiver's on-time.
  • the receiver includes a data detector and a frequency synthesizer and receives radio frequency signals containing data having a first predetermined duration at an interval having a second predetermined time period.
  • the receiver's on-time is varied until the data detector is on the verge of failing to detect all of the data.
  • FIG. 1 is a block diagram of a data communications system which may employ the present invention.
  • FIG. 2 is a detailed view of the receiver depicted in FIG. 1.
  • FIG. 3 is a timing diagram of the transmission of the incoming radio frequency signals and the relationship to the turn-on time of a radio receiver which may employ the present invention.
  • FIG. 4 is a process flow chart of a method which may employ the present invention. Description of a Preferred Embodiment
  • FIG. 1 depicts a radio frequency transmission system which includes a fixed transmitter site 123 and a portable or mobile radiotelephone 105.
  • the fixed transmitter site 123 contains an antenna 103 and a radio frequency transmitter 101.
  • the portable or mobile radiotelephone 105 includes an antenna 107 for coupling the radio frequency signals sent from the fixed transmitter site 123, a receiver 109 for receiving and detecting data in the receive radio frequency signals, a microprocessor 111 which receives the detected data via the data bus 115 and transmits control signals via control lines 117 to the receiver 109.
  • the control signals 117 control the on-time of the individual parts of the receiver 109.
  • the microprocessor 111 also has external memory 113.
  • the memory 113 is used for storage of computer data and programs which may employ the current invention.
  • the memory 113 is coupled to the microprocessor 111 via an address bus 119 and a data bus 121.
  • FIG. 2 reveals a detailed view of the receiver 109 depicted in FIG. 1.
  • a frequency synthesizer 203 Upon reception of radio frequency signals via the antenna 107, a mixer 201 combines the incoming signals with the frequency generated from the frequency synthesizer 203.
  • the data detector 205 transposes the output signal of the mixer 201 into a data form recognizable by the microprocessor 111.
  • the radio transmitter 101 transmits radio frequency signals at predetermined intervals to the receiver 109 for predetermined lengths of time, therefore, the receiver 109 does not need power 100% of the time.
  • the control signals 117 turn on and off the frequency synthesizer 203, the mixer 201 and the data detector 205 contained within the receiver 109.
  • FIG. 3 is a timing diagram of the transmission of the incoming radio frequency signals from the transmitter 101 which are received by the antenna 107 and the signal's relationship to the turn-on time of the frequency synthesizer 203, the data detector 205 and the mixer 201.
  • the first waveform 309 depicts the transmission of the radio frequency signals of interest from the transmitter 101.
  • the parameter "T” 301 is the time interval between transmissions of radio frequency signals, in the present embodiment the time is 280 mS.
  • Parameter "T1" 305 is the length in time of an individual transmission of radio frequency signals of interest from the transmitter 101 , which in the present embodiment can be 40 mS.
  • the second waveform 311 is a control signal created by the microprocessor 111 which turns the frequency synthesizer 203 on and off.
  • Parameter "TO” 303 is the minimized warm-up time necessary for the frequency synthesizer to lock on to the desired frequency as determined by the method disclosed in FIG. 4.
  • "T1 " + “TO” is the receiver on-time.
  • the third waveform 313 is a control signal created by the microprocessor 111 which switches the data detector 205 and the mixer 201 on and off.
  • Parameter "T2" is the fixed amount of time after turning on the frequency synthesizer 203 that the data detector 205 and the mixer 201 are turned on.
  • Parameter “T3” is the warm-up time necessary for the data detector 205 and the mixer 201 to ensure that all of circuitry contained within the data detector 205 and the mixer 201 has warmed-up prior to receiving the output signal from the antenna 107.
  • the method depicted in FIG. 4 in flow chart form is an adaptive loop which controls the on-time of components of the receiver 109, such as the frequency synthesizer 203, the data detector 205 and the mixer 201.
  • the method compensates for the frequency, the temperature at which the radio is operating and the component variation in the radio by starting the method in response to a change in the temperature of the receiver 109 or a change in the frequency of the frequency synthesizer 203.
  • the method starts the on-time of the receiver 109, "TO” + “T1", at the predetermined worst case time, in this embodiment 142 mS, and reduces the on-time by a predetermined increment, "T3" set at 5 mS for this embodiment, until it is on the verge of not detecting all of the data.
  • Equally efficient methods may be developed, for example, by starting at a predetermined minimum value and working out until the data detection is successful.
  • the method begins at 401 triggered by a measurable change in the temperature or a change in the frequency of the frequency synthesizer 203.
  • the warm-up time parameter "TO" 307 is set to the predetermined worst case value, 142 mS.
  • the receiver 109 is turned off at the end of "T1 " 305.
  • the method waits an amount of time equal to "T” 301 less the current setting for "TO" 303 and "T1 " 305.
  • the receiver 109 is turned on.
  • the data detector 205 attempts to detect the data from the incoming radio frequency signals 309.
  • the method decides if the data detection was successful or not successful by verifying the accuracy of the data detected.
  • the warm-up time parameter, "TO" 307 is reduced by a predetermined increment "T3" and the method is repeated starting at 405. These steps are repeated until data detection is not successful. If the data detection is not successful, the warm-up parameter is increased by the predetermined increment "T3", returning the warm-up time "T1 " 307 to the duration of the previous successful data detection. The method ends at 419. The minimized warm-up time is now at the lower limit of successfully detecting data.
  • the accuracy of the method may be improved by reducing the magnitude of the predetermined increment "T3", however, this will increase the number of iterations necessary to achieve the minimized limit, in the present invention, this method was implemented for the turn-on time of the frequency synthesizer 203.
  • the data detector 205 and the mixer 201 are turned-on a fixed time, "T2", from the turn-on time of the frequency synthesizer 203, but upon apprehending the present invention, a designer may implement this method individually for the frequency synthesizer 203, the data detector 205, the mixer 201 and any other circuitry for which it may be deemed necessary, thus, increasing the accuracy of the turn-on times and increasing the microprocessor time necessary for the implementation of the method.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Theoretical Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Physics & Mathematics (AREA)
  • General Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Computer Security & Cryptography (AREA)
  • Small-Scale Networks (AREA)
  • Communication Control (AREA)
  • Circuits Of Receivers In General (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Superheterodyne Receivers (AREA)

Abstract

Procédé de commande du temps de marche (313) d'un récepteur. Le récepteur radio (109) reçoit des signaux radio-électriques (309) d'une durée prédéterminée (305) à un intervalle ayant une durée prédéterminée (301). Le procédé varie le temps de marche du récepteur (415, 417) jusqu'à ce que le détecteur de données (205) soit sur le point de ne pas réussir à détecter toutes les données.
PCT/US1992/000595 1991-01-28 1992-01-24 Procede et appareil de commande d'un recepteur WO1992013395A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9222171A GB2261140B (en) 1991-02-25 1992-10-22 Receiver controller method and apparatus

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US64692491A 1991-01-28 1991-01-28
US660,195 1991-02-25

Publications (1)

Publication Number Publication Date
WO1992013395A1 true WO1992013395A1 (fr) 1992-08-06

Family

ID=24595018

Family Applications (2)

Application Number Title Priority Date Filing Date
PCT/US1992/000595 WO1992013395A1 (fr) 1991-01-28 1992-01-24 Procede et appareil de commande d'un recepteur
PCT/US1992/000646 WO1992013414A1 (fr) 1991-01-28 1992-01-27 Systeme de transmission de paquets et procede utilisant a la fois un bus de donnees et des lignes de commande specialisees

Family Applications After (1)

Application Number Title Priority Date Filing Date
PCT/US1992/000646 WO1992013414A1 (fr) 1991-01-28 1992-01-27 Systeme de transmission de paquets et procede utilisant a la fois un bus de donnees et des lignes de commande specialisees

Country Status (5)

Country Link
EP (1) EP0569512A4 (fr)
JP (2) JP2678690B2 (fr)
KR (1) KR970007257B1 (fr)
BR (1) BR9205487A (fr)
WO (2) WO1992013395A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994010812A1 (fr) * 1992-11-02 1994-05-11 Siemens Aktiengesellschaft Agencement permettant d'assurer la commande d'une unite emettrice et d'une unite receptrice, notamment de stations de base et d'unites mobiles d'un systeme de telephone sans fil
CN1049551C (zh) * 1992-09-30 2000-02-16 摩托罗拉公司 可靠的消息通信系统
US11990263B2 (en) 2017-05-29 2024-05-21 Eto Magnetic Gmbh Small appliance

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5551078A (en) 1994-07-29 1996-08-27 Motorola, Inc. Apparatus and method for minimizing the turn on time for a receiver operating in a discontinuous receive mode
SE515588C2 (sv) * 1996-01-25 2001-09-03 Ericsson Telefon Ab L M Miniceller med variabel för storlek på nyttolasten i ett mobiltelefonnät
GB2342535A (en) * 1998-10-09 2000-04-12 Ericsson Telefon Ab L M A modular radio telecommunications terminal
KR100860023B1 (ko) * 2001-12-29 2008-09-25 엘지전자 주식회사 데이터 전송 시스템 및 그를 이용한 데이터 전송 방법

Citations (3)

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Publication number Priority date Publication date Assignee Title
US4961073A (en) * 1989-02-27 1990-10-02 Motorola, Inc. Battery saving apparatus and method providing optimum synchronization codeword detection
US4995099A (en) * 1988-12-01 1991-02-19 Motorola, Inc. Power conservation method and apparatus for a portion of a predetermined signal
US5032835A (en) * 1989-04-24 1991-07-16 Motorola, Inc. Out of range indication for radio receivers

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US4652873A (en) * 1984-01-18 1987-03-24 The Babcock & Wilcox Company Access control for a plurality of modules to a common bus
US4875158A (en) * 1985-08-14 1989-10-17 Apple Computer, Inc. Method for requesting service by a device which generates a service request signal successively until it is serviced
JPS6253097A (ja) * 1985-09-02 1987-03-07 Toshiba Corp 制御デ−タ伝送方式
GB2180126B (en) * 1985-09-03 1989-08-31 Plessey Co Plc Inter-bus system
US4922486A (en) * 1988-03-31 1990-05-01 American Telephone And Telegraph Company User to network interface protocol for packet communications networks

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4995099A (en) * 1988-12-01 1991-02-19 Motorola, Inc. Power conservation method and apparatus for a portion of a predetermined signal
US4961073A (en) * 1989-02-27 1990-10-02 Motorola, Inc. Battery saving apparatus and method providing optimum synchronization codeword detection
US5032835A (en) * 1989-04-24 1991-07-16 Motorola, Inc. Out of range indication for radio receivers

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1049551C (zh) * 1992-09-30 2000-02-16 摩托罗拉公司 可靠的消息通信系统
WO1994010812A1 (fr) * 1992-11-02 1994-05-11 Siemens Aktiengesellschaft Agencement permettant d'assurer la commande d'une unite emettrice et d'une unite receptrice, notamment de stations de base et d'unites mobiles d'un systeme de telephone sans fil
AU673208B2 (en) * 1992-11-02 1996-10-31 Siemens Aktiengesellschaft Arrangement for controlling a transmitter-receiver pair, in particular base stations and mobile units of a cordless telephone system
US5594737A (en) * 1992-11-02 1997-01-14 Siemens Aktiengesellschaft Arrangement for controlling a transmitting/receiving device of base stations and/or mobile units, in particular of a cordless telephone system
CN1047492C (zh) * 1992-11-02 1999-12-15 西门子公司 控制无绳电话系统中基站和移动部分发射接收装置的设备
US11990263B2 (en) 2017-05-29 2024-05-21 Eto Magnetic Gmbh Small appliance

Also Published As

Publication number Publication date
JP2678690B2 (ja) 1997-11-17
JPH06505600A (ja) 1994-06-23
EP0569512A1 (fr) 1993-11-18
KR970007257B1 (ko) 1997-05-07
BR9205487A (pt) 1994-06-21
WO1992013414A1 (fr) 1992-08-06
KR930703776A (ko) 1993-11-30
JPH06503216A (ja) 1994-04-07
EP0569512A4 (en) 1997-11-05

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