FR2751495B1 - Systeme de telecommunications a synchronisation temporelle - Google Patents

Systeme de telecommunications a synchronisation temporelle

Info

Publication number
FR2751495B1
FR2751495B1 FR9709054A FR9709054A FR2751495B1 FR 2751495 B1 FR2751495 B1 FR 2751495B1 FR 9709054 A FR9709054 A FR 9709054A FR 9709054 A FR9709054 A FR 9709054A FR 2751495 B1 FR2751495 B1 FR 2751495B1
Authority
FR
France
Prior art keywords
telecommunications system
time synchronization
synchronization
telecommunications
time
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Fee Related
Application number
FR9709054A
Other languages
English (en)
Other versions
FR2751495A1 (fr
Inventor
Koji Yamawaki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
National Space Development Agency of Japan
Original Assignee
National Space Development Agency of Japan
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 National Space Development Agency of Japan filed Critical National Space Development Agency of Japan
Publication of FR2751495A1 publication Critical patent/FR2751495A1/fr
Application granted granted Critical
Publication of FR2751495B1 publication Critical patent/FR2751495B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/14—Relay systems
    • H04B7/15—Active relay systems
    • H04B7/204—Multiple access
    • H04B7/212—Time-division multiple access [TDMA]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radio Relay Systems (AREA)
  • Position Fixing By Use Of Radio Waves (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
FR9709054A 1996-07-18 1997-07-17 Systeme de telecommunications a synchronisation temporelle Expired - Fee Related FR2751495B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8234775A JP2915851B2 (ja) 1996-07-18 1996-07-18 時刻同期型通信システム

Publications (2)

Publication Number Publication Date
FR2751495A1 FR2751495A1 (fr) 1998-01-23
FR2751495B1 true FR2751495B1 (fr) 2004-10-08

Family

ID=16976183

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9709054A Expired - Fee Related FR2751495B1 (fr) 1996-07-18 1997-07-17 Systeme de telecommunications a synchronisation temporelle

Country Status (3)

Country Link
US (1) US5875402A (fr)
JP (1) JP2915851B2 (fr)
FR (1) FR2751495B1 (fr)

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WO1999034638A1 (fr) * 1997-12-23 1999-07-08 Nokia Networks Oy Procede et dispositif de generation d'horloge pour une transmission asynchrone
FR2774828B1 (fr) * 1998-02-06 2000-04-21 Centre Nat Etd Spatiales Systeme spatial de telecommunications comprenant au moins un satellite, et procede de synchronisation d'un tel systeme
US6081229A (en) * 1998-03-17 2000-06-27 Qualcomm Incorporated System and method for determining the position of a wireless CDMA transceiver
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US5999124A (en) * 1998-04-22 1999-12-07 Snaptrack, Inc, Satellite positioning system augmentation with wireless communication signals
US6185429B1 (en) * 1998-07-31 2001-02-06 Motorola, Inc. Method and apparatus for performing a time synchronization of a base site
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US7151757B2 (en) * 2001-05-02 2006-12-19 Strix Systems, Inc. Wireless base station to base station synchronization in a communication system, such as a system employing a short-range frequency hopping or time division duplex scheme
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US7194010B2 (en) * 2001-05-02 2007-03-20 Strix Systems, Inc. Wireless base station to base station synchronization in a communication system, such as a system employing a short range frequency hopping or time division duplex scheme
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US20040113810A1 (en) * 2002-06-28 2004-06-17 Mason Robert T. Data collector for an automated meter reading system
JP4147906B2 (ja) * 2002-11-08 2008-09-10 日本電気株式会社 移動無線通信システム、基地局及びそれらに用いる移動無線通信方法
US7126800B2 (en) * 2003-07-11 2006-10-24 General Electric Company Method and system for communications channel delay asymmetry compensation using global positioning systems
US7315162B2 (en) * 2004-03-18 2008-01-01 Elster Electricity, Llc Reducing power consumption of electrical meters
US7227350B2 (en) * 2004-03-18 2007-06-05 Elster Electricity, Llc Bias technique for electric utility meter
US7239250B2 (en) * 2004-04-26 2007-07-03 Elster Electricity, Llc System and method for improved transmission of meter data
US7262709B2 (en) * 2004-04-26 2007-08-28 Elster Electricity, Llc System and method for efficient configuration in a fixed network automated meter reading system
US7187906B2 (en) * 2004-04-26 2007-03-06 Elster Electricity, Llc Method and system for configurable qualification and registration in a fixed network automated meter reading system
US20050251403A1 (en) * 2004-05-10 2005-11-10 Elster Electricity, Llc. Mesh AMR network interconnecting to TCP/IP wireless mesh network
US20050251401A1 (en) * 2004-05-10 2005-11-10 Elster Electricity, Llc. Mesh AMR network interconnecting to mesh Wi-Fi network
US7142106B2 (en) * 2004-06-15 2006-11-28 Elster Electricity, Llc System and method of visualizing network layout and performance characteristics in a wireless network
JP4547530B2 (ja) * 2004-08-24 2010-09-22 独立行政法人産業技術総合研究所 時刻比較システム
US7170425B2 (en) * 2004-09-24 2007-01-30 Elster Electricity, Llc System and method for creating multiple operating territories within a meter reading system
US7702594B2 (en) * 2004-09-24 2010-04-20 Elster Electricity, Llc System and method for automated configuration of meters
US7176807B2 (en) * 2004-09-24 2007-02-13 Elster Electricity, Llc System for automatically enforcing a demand reset in a fixed network of electricity meters
US7742430B2 (en) * 2004-09-24 2010-06-22 Elster Electricity, Llc System for automated management of spontaneous node migration in a distributed fixed wireless network
US7327998B2 (en) * 2004-12-22 2008-02-05 Elster Electricity, Llc System and method of providing a geographic view of nodes in a wireless network
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US20060224335A1 (en) * 2005-03-29 2006-10-05 Elster Electricity, Llc Collecting interval data from a relative time battery powered automated meter reading devices
JP5323301B2 (ja) * 2005-07-05 2013-10-23 船井電機株式会社 衛星測位システム
US7330122B2 (en) * 2005-08-10 2008-02-12 Remotemdx, Inc. Remote tracking and communication device
US7495578B2 (en) * 2005-09-02 2009-02-24 Elster Electricity, Llc Multipurpose interface for an automated meter reading device
US7308369B2 (en) * 2005-09-28 2007-12-11 Elster Electricity Llc Ensuring automatic season change demand resets in a mesh type network of telemetry devices
US20070147268A1 (en) * 2005-12-23 2007-06-28 Elster Electricity, Llc Distributing overall control of mesh AMR LAN networks to WAN interconnected collectors
US7545285B2 (en) * 2006-02-16 2009-06-09 Elster Electricity, Llc Load control unit in communication with a fixed network meter reading system
US7427927B2 (en) * 2006-02-16 2008-09-23 Elster Electricity, Llc In-home display communicates with a fixed network meter reading system
US7710981B2 (en) * 2006-07-10 2010-05-04 Asterion, Inc. Apparatus for and method of generating a time reference
US7936262B2 (en) 2006-07-14 2011-05-03 Securealert, Inc. Remote tracking system with a dedicated monitoring center
US7737841B2 (en) 2006-07-14 2010-06-15 Remotemdx Alarm and alarm management system for remote tracking devices
US8797210B2 (en) * 2006-07-14 2014-08-05 Securealert, Inc. Remote tracking device and a system and method for two-way voice communication between the device and a monitoring center
US20080045145A1 (en) * 2006-08-17 2008-02-21 Fujitsu Limited Radio Relay Communication Method, Radio Base Station, and Radio Relay Station in Radio Communication System
JP4952135B2 (ja) * 2006-08-17 2012-06-13 富士通株式会社 無線端末、中継局、無線基地局及び通信方法
US8073384B2 (en) * 2006-12-14 2011-12-06 Elster Electricity, Llc Optimization of redundancy and throughput in an automated meter data collection system using a wireless network
WO2008084394A2 (fr) * 2007-01-12 2008-07-17 Nortel Networks Limited Option technologique de relais mobile
KR100996421B1 (ko) * 2007-03-15 2010-11-24 삼성전자주식회사 이동통신시스템의 채널카드에서 동기를 위한 장치 및 방법
US8320302B2 (en) * 2007-04-20 2012-11-27 Elster Electricity, Llc Over the air microcontroller flash memory updates
US20090161655A1 (en) * 2007-12-20 2009-06-25 Qualcomm, Incorporated Umb cell site modem architecture and methods
TWI386011B (zh) * 2007-12-21 2013-02-11 Chi Mei Comm Systems Inc Ｃｄｍａ手機ｇｐｓ時間校準系統及方法
AU2008340227B2 (en) 2007-12-26 2013-05-09 Elster Electricity, Llc. Optimized data collection in a wireless fixed network metering system
EP2260482B1 (fr) 2008-03-07 2013-01-09 Securealert, Inc. Système et procédé destinés à la surveillance d individus grâce à une balise et à un dispositif de localisation à distance intelligent
US8525692B2 (en) * 2008-06-13 2013-09-03 Elster Solutions, Llc Techniques for limiting demand from an electricity meter with an installed relay
US8203463B2 (en) 2009-02-13 2012-06-19 Elster Electricity Llc Wakeup and interrogation of meter-reading devices using licensed narrowband and unlicensed wideband radio communication
US8514070B2 (en) 2010-04-07 2013-08-20 Securealert, Inc. Tracking device incorporating enhanced security mounting strap
US8989652B2 (en) * 2011-09-09 2015-03-24 The Boeing Company Advanced timing and time transfer for satellite constellations using crosslink ranging and an accurate time source
KR102254601B1 (ko) * 2014-10-24 2021-05-21 한국전자통신연구원 멀티홉 릴레이 선박 통신 장치
TWI570423B (zh) * 2015-04-13 2017-02-11 國立交通大學 定位方法
US10168433B2 (en) * 2015-05-26 2019-01-01 Intel IP Corporation Power conservation via GNSS-wireless activity synchronization
TWI667908B (zh) * 2016-02-01 2019-08-01 日商日本電氣股份有限公司 Time difference measuring device, system and method

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Also Published As

Publication number Publication date
FR2751495A1 (fr) 1998-01-23
JPH1032533A (ja) 1998-02-03
JP2915851B2 (ja) 1999-07-05
US5875402A (en) 1999-02-23

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Effective date: 20110331