TWI369884B - Method for time synchronizing base stations in wireless communication system and base station - Google Patents

Method for time synchronizing base stations in wireless communication system and base station

Info

Publication number
TWI369884B
TWI369884B TW096104349A TW96104349A TWI369884B TW I369884 B TWI369884 B TW I369884B TW 096104349 A TW096104349 A TW 096104349A TW 96104349 A TW96104349 A TW 96104349A TW I369884 B TWI369884 B TW I369884B
Authority
TW
Taiwan
Prior art keywords
base station
wireless communication
communication system
time synchronizing
base stations
Prior art date
Application number
TW096104349A
Other languages
English (en)
Other versions
TW200803390A (en
Inventor
G Dick Steven
Zeira Eldad
Original Assignee
Interdigital Tech Corp
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 Interdigital Tech Corp filed Critical Interdigital Tech Corp
Publication of TW200803390A publication Critical patent/TW200803390A/zh
Application granted granted Critical
Publication of TWI369884B publication Critical patent/TWI369884B/zh

Links

Classifications

    • 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
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H04B7/2687—Inter base stations synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H04B7/2687—Inter base stations synchronisation
    • H04B7/2693—Centralised synchronisation, i.e. using external universal time reference, e.g. by using a global positioning system [GPS] or by distributing time reference over the wireline network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J3/00—Time-division multiplex systems
    • H04J3/02—Details
    • H04J3/06—Synchronising arrangements
    • H04J3/0635—Clock or time synchronisation in a network
    • H04J3/0638—Clock or time synchronisation among nodes; Internode synchronisation
    • H04J3/0641—Change of the master or reference, e.g. take-over or failure of the master
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/002—Mutual synchronization
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/0055—Synchronisation arrangements determining timing error of reception due to propagation delay
    • H04W56/0065—Synchronisation arrangements determining timing error of reception due to propagation delay using measurement of signal travel time
    • H04W56/007—Open loop measurement
    • H04W56/0075—Open loop measurement based on arrival time vs. expected arrival time
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B2201/00—Indexing scheme relating to details of transmission systems not covered by a single group of H04B3/00 - H04B13/00
    • H04B2201/69—Orthogonal indexing scheme relating to spread spectrum techniques in general
    • H04B2201/707—Orthogonal indexing scheme relating to spread spectrum techniques in general relating to direct sequence modulation
    • H04B2201/70702—Intercell-related aspects
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2668—Arrangements for Wireless Code-Division Multiple Access [CDMA] System Synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H04B7/2687—Inter base stations synchronisation
    • H04B7/269—Master/slave synchronisation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2662—Arrangements for Wireless System Synchronisation
    • H04B7/2671—Arrangements for Wireless Time-Division Multiple Access [TDMA] System Synchronisation
    • H04B7/2678—Time synchronisation
    • H04B7/2687—Inter base stations synchronisation
    • H04B7/2696—Over the air autonomous synchronisation, e.g. by monitoring network activity

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Remote Sensing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Time-Division Multiplex Systems (AREA)
TW096104349A 2000-04-07 2002-10-29 Method for time synchronizing base stations in wireless communication system and base station TWI369884B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US19554300P 2000-04-07 2000-04-07
US22340500P 2000-08-04 2000-08-04

Publications (2)

Publication Number Publication Date
TW200803390A TW200803390A (en) 2008-01-01
TWI369884B true TWI369884B (en) 2012-08-01

Family

ID=26891064

Family Applications (4)

Application Number Title Priority Date Filing Date
TW090108367A TW511361B (en) 2000-04-07 2001-04-06 Base station synchronization for wireless communication systems
TW092127537A TWI277350B (en) 2000-04-07 2002-10-29 Base station synchronization for wireless communication systems
TW091132113A TW200407045A (en) 2000-04-07 2002-10-29 Base station synchronization for wireless communication
TW096104349A TWI369884B (en) 2000-04-07 2002-10-29 Method for time synchronizing base stations in wireless communication system and base station

Family Applications Before (3)

Application Number Title Priority Date Filing Date
TW090108367A TW511361B (en) 2000-04-07 2001-04-06 Base station synchronization for wireless communication systems
TW092127537A TWI277350B (en) 2000-04-07 2002-10-29 Base station synchronization for wireless communication systems
TW091132113A TW200407045A (en) 2000-04-07 2002-10-29 Base station synchronization for wireless communication

Country Status (19)

Country Link
US (6) US6961398B2 (zh)
EP (3) EP1659709A3 (zh)
JP (4) JP4846956B2 (zh)
KR (3) KR100709088B1 (zh)
CN (4) CN1300951C (zh)
AT (1) ATE319236T1 (zh)
AU (1) AU2001249854A1 (zh)
BR (1) BRPI0110066B1 (zh)
CA (3) CA2691637A1 (zh)
DE (1) DE60117522T2 (zh)
DK (2) DK1273111T3 (zh)
ES (2) ES2475494T3 (zh)
HK (4) HK1066342A1 (zh)
IL (2) IL152104A (zh)
MX (1) MXPA02009890A (zh)
MY (3) MY137838A (zh)
NO (2) NO326189B1 (zh)
TW (4) TW511361B (zh)
WO (1) WO2001080461A1 (zh)

Families Citing this family (94)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5614914A (en) * 1994-09-06 1997-03-25 Interdigital Technology Corporation Wireless telephone distribution system with time and space diversity transmission for determining receiver location
DK1273111T3 (da) * 2000-04-07 2006-07-10 Interdigital Tech Corp Basisstationssynkronisering til trådlöse kommunikationssystemer
GB2402022B (en) * 2000-07-14 2005-03-30 Ip Access Ltd Cellular radio telecommunication systems
US6826244B2 (en) 2001-02-27 2004-11-30 Interdigital Technology Corporation Initial cell search algorithm for 3G FDD wireless communication systems
SE0101372L (sv) * 2001-04-18 2002-05-21 Saab Ab System och metod för tidmatning av data
US7209463B2 (en) * 2001-06-30 2007-04-24 Samsung Electronics Co., Ltd. Transmission time adjusting apparatus and method between RNC and UE in a CDMA communication system
US6775242B2 (en) * 2001-07-09 2004-08-10 Qualcomm Incorporated Method and apparatus for time-aligning transmissions from multiple base stations in a CDMA communication system
ES2743319T3 (es) 2001-08-14 2020-02-18 Qualcomm Inc Procedimiento y aparato para la conectividad de redes inalámbricas
AUPR863401A0 (en) * 2001-11-02 2001-11-29 Qx Corporation Pty Ltd A method & device for precision time-lock
US6847630B2 (en) * 2001-11-09 2005-01-25 Qualcomm, Incorporated Communications in an asynchronous cellular wireless network
US7689225B2 (en) 2002-01-28 2010-03-30 Ntt Docomo, Inc. Method and apparatus for dormant mode support with paging
US7813311B2 (en) 2002-02-05 2010-10-12 Interdigital Technology Corporation Method and apparatus for synchronizing base stations
US7502614B2 (en) * 2002-02-18 2009-03-10 Sony Corporation Radio communication system, radio communication apparatus and radio communication method, and computer program
US20030210713A1 (en) * 2002-05-13 2003-11-13 Hisham Abdel-Ghaffar Estimating a time offset between link points in a communication network operating in a frequency division duplex mode
US7426392B2 (en) * 2002-05-23 2008-09-16 Intel Corporation Search receiver using adaptive detection theresholds
RU2248668C2 (ru) 2002-11-15 2005-03-20 Корпорация "Самсунг Электроникс" Способ определения взаимного временного рассогласования сигналов базовых станций в системе сотовой радиосвязи
US20040131024A1 (en) * 2003-01-08 2004-07-08 Carlos Manzanares Method and hierarchical radio network operations system for controlling a mobile communications network
DE10303700B4 (de) * 2003-01-30 2005-09-22 Siemens Ag Verfahren zur Interferenzunterdrückung
US20040202119A1 (en) * 2003-04-10 2004-10-14 Edge Stephen William Base station synchronization in a wireless network
DE10331311B4 (de) * 2003-07-10 2008-02-07 Siemens Ag Verfahren zur Synchronisation eines in Funkzellen aufgeteilten Funkkommunikationssystems
DE10336312B4 (de) * 2003-08-07 2007-08-30 Siemens Ag Verfahren zur Synchronisation eines in Funkzellen aufgeteilten Funkkommunikationssystems, sowie eine Basis- und Mobilstation in einem derartigen System
US7535932B2 (en) * 2003-12-26 2009-05-19 Ntt Docomo, Inc. Radio communications system, radio network controller and base station
WO2005067686A2 (en) * 2004-01-12 2005-07-28 Andrew Corporation Method and apparatus for synchronizing wireless location servers
US7286801B2 (en) * 2004-05-19 2007-10-23 Qualcomm Incorporated Maintaining and searching sets of cells in a wireless communication system
CN100421367C (zh) * 2004-07-26 2008-09-24 华为技术有限公司 一种实现基站同步传输的方法
CN100428653C (zh) * 2004-11-16 2008-10-22 戴闽鲁 基站间时间同步关系及tdd共信道干扰基站的判定方法
US8364185B2 (en) * 2005-04-18 2013-01-29 Samsung Electronics Co., Ltd. Method and system for synchronizing a clock for an adjacent network to a clock for an overlay network
CN101167283B (zh) * 2005-04-28 2014-05-07 哈里公司 无线通信装置和无线通信方法
EP1961186B1 (en) 2005-12-15 2018-11-21 ABB Schweiz AG Using travel-time as means for improving the accuracy of simple network time protocol
US20070201591A1 (en) * 2006-02-28 2007-08-30 Knerr Barry F BTS span synchronization utilizing an external span qualification reference
US7738611B2 (en) * 2006-08-07 2010-06-15 Harris Stratex Networks, Inc. Remote monitoring and calibration of system reference clock using network timing reference
CN101123465B (zh) * 2006-08-09 2012-07-04 上海贝尔阿尔卡特股份有限公司 无线通信系统中用于进行网络设备间同步的方法和装置
US7912164B2 (en) * 2006-12-20 2011-03-22 Eaton Corporation Synchronization system and method for wireless communicating nodes
CN101237272B (zh) * 2007-02-02 2012-12-19 中兴通讯股份有限公司 射频通道同步系统及方法
JPWO2008126694A1 (ja) * 2007-03-28 2010-07-22 ブラザー工業株式会社 移動局位置測定方法
US20080240163A1 (en) * 2007-04-02 2008-10-02 Texas Instruments Incorporated System and method for maintaining transmission synchrony
US7894512B2 (en) * 2007-07-31 2011-02-22 Harris Corporation System and method for automatic recovery and covariance adjustment in linear filters
US20090097452A1 (en) * 2007-10-12 2009-04-16 Qualcomm Incorporated Femto cell synchronization and pilot search methodology
WO2009053072A1 (en) * 2007-10-23 2009-04-30 Koninklijke Kpn N.V. Method and system for synchronizing a group of end-terminals
CN101232325B (zh) * 2008-01-31 2013-01-09 华为技术有限公司 无线通信系统、空中接口同步调整方法、基站及其控制装置
JP4352281B1 (ja) * 2008-05-23 2009-10-28 日本電気株式会社 無線通信システム、基地局、基地局間同期方法、プログラム
JP4719252B2 (ja) * 2008-06-25 2011-07-06 京セラ株式会社 無線通信システム、管理装置および無線通信方法
CN101621354B (zh) * 2008-07-06 2013-07-31 财团法人工业技术研究院 讯号侦测方法及使用该方法的接收装置
JP4811478B2 (ja) * 2008-11-12 2011-11-09 住友電気工業株式会社 基地局装置
US8626186B2 (en) * 2008-08-05 2014-01-07 Percello Ltd. Avoiding transmitter collision sessions in femtocells arrays
JP5228684B2 (ja) * 2008-08-07 2013-07-03 富士通株式会社 通信端末、基地局、通信端末の通信方法、基地局の通信方法、通信システム
US20100054237A1 (en) * 2008-09-04 2010-03-04 Motorola, Inc. Synchronization for femto-cell base stations
WO2010051847A1 (en) * 2008-11-07 2010-05-14 Nokia Siemens Networks Oy Apparatus and method for synchronization
CN102257747B (zh) * 2008-12-01 2014-12-10 爱立信(中国)通信有限公司 用于识别不同步基站的方法和设备
WO2010099049A2 (en) * 2009-02-24 2010-09-02 Eamonn Gormley Base station reference frequency and timing correction
WO2010098971A2 (en) 2009-02-24 2010-09-02 Eamonn Gormley Base station reference frequency correction and timing correction using transceiver feedback
US8886205B2 (en) 2009-03-02 2014-11-11 Qualcomm Incorporated Timing adjustment for synchronous operation in a wireless network
US8730938B2 (en) * 2009-04-08 2014-05-20 Qualcomm Incorporated Minimizing the impact of self synchronization on wireless communication devices
US20120088506A1 (en) * 2009-04-23 2012-04-12 Nec Europe Ltd. Method for operating a network and a network
GB2469676B (en) * 2009-04-23 2011-11-30 Percello Ltd Femtocell handset assisted clock correction
US20110158164A1 (en) * 2009-05-22 2011-06-30 Qualcomm Incorporated Systems and methods for joint processing in a wireless communication
US20110131924A1 (en) * 2009-12-03 2011-06-09 Wendell Martin Bottling Mechanism
KR101302565B1 (ko) * 2009-12-15 2013-09-02 한국전자통신연구원 분실 모바일 단말기의 위치 추정 시스템, 방법 및 모바일 단말기
KR101676045B1 (ko) * 2010-02-09 2016-11-15 엘지전자 주식회사 무선 통신 시스템에서 로그된 측정 폐기 방법 및 장치
CN102149186B (zh) * 2010-02-10 2013-10-09 上海华为技术有限公司 时分系统空口同步方法及设备
WO2011100859A1 (en) 2010-02-19 2011-08-25 Telefonaktiebolaget L M Ericsson (Publ) Improvements on otdoa and agnss positioning and timing information obtaining and updating
CN102196492A (zh) * 2010-03-10 2011-09-21 鼎桥通信技术有限公司 一种家庭基站的空口同步方法
US20110249619A1 (en) * 2010-04-13 2011-10-13 Yi Yu Wireless communication system using multiple-serving nodes
JP2012080509A (ja) * 2010-10-06 2012-04-19 Sumitomo Electric Ind Ltd 管理装置、通信システム、基地局装置、及び管理方法
US9395432B2 (en) 2011-08-17 2016-07-19 Zih Corp. Method and apparatus for modeling timing relationships between clocks
CN102958084B (zh) * 2011-08-23 2018-03-02 中兴通讯股份有限公司 一种时延差的纠正方法和系统
JP5459628B2 (ja) * 2012-01-12 2014-04-02 横河電機株式会社 時刻同期システム
WO2013141148A1 (ja) 2012-03-19 2013-09-26 京セラ株式会社 移動通信システム、無線基地局及び移動通信方法
CN102685874B (zh) 2012-04-12 2018-11-23 南京中兴新软件有限责任公司 一种多个接入点间偏差校准方法、系统和装置
CN102945262B (zh) * 2012-10-19 2015-12-02 大唐移动通信设备有限公司 一种rnc配置数据对比方法和装置
CN103889045B (zh) * 2012-12-21 2017-08-04 普天信息技术研究院有限公司 一种上行数据定时同步的方法
CN103797868B (zh) 2013-07-01 2017-06-06 华为技术有限公司 空口同步的方法、基站、控制装置及无线通信系统
CN104378818A (zh) * 2013-08-13 2015-02-25 中兴通讯股份有限公司 一种时钟同步方法及装置、基站子系统
US10149261B2 (en) 2013-11-04 2018-12-04 Qualcomm Incorporated Methods and systems for mobile device clock management
US20150123844A1 (en) * 2013-11-04 2015-05-07 Qualcomm Incorporated Methods and systems for mobile device clock management
CN104735770A (zh) * 2013-12-18 2015-06-24 中兴通讯股份有限公司 同步方法、传输节点、终端及通信系统
WO2015127983A1 (en) * 2014-02-28 2015-09-03 Telefonaktiebolaget L M Ericsson (Publ) Clock synchronization with hysteresis state switching
US9306727B2 (en) 2014-07-22 2016-04-05 Raytheon Company System and method for synchronizing ground clocks
JP6515630B2 (ja) * 2015-03-27 2019-05-22 日本電気株式会社 無線通信装置
US9930704B2 (en) 2015-07-24 2018-03-27 Aruba Networks, Inc. Heterogeneous deployment of access point clusters
US9913231B2 (en) 2015-08-04 2018-03-06 Qualcomm Incorporated Local transmitter synchronization based on WWAN base station network
US10113279B2 (en) 2015-08-24 2018-10-30 Off The Wall Products, Llc Barrier systems with programmable light assembly
CN106936560B (zh) * 2015-12-29 2020-04-14 华为技术有限公司 一种帧同步方法、用户设备及基站
US10405287B1 (en) * 2016-07-27 2019-09-03 Robotic Research, Llc Covert timing synchronization
US10064148B2 (en) * 2017-01-20 2018-08-28 M2 Robots, Inc. Ultra-wide band positioning system
TWI666895B (zh) * 2017-02-08 2019-07-21 財團法人工業技術研究院 行動裝置群組的連線管理方法
CN108401246A (zh) 2017-02-08 2018-08-14 财团法人工业技术研究院 移动装置群组的连线管理方法
CN109067510B (zh) 2017-08-11 2019-11-05 华为技术有限公司 同步信号块指示及确定方法、网络设备和终端设备
CN109429325B (zh) 2017-08-24 2021-03-26 阿里巴巴集团控股有限公司 数据传输方法、装置、基站和服务器
JP6848769B2 (ja) * 2017-08-29 2021-03-24 トヨタ自動車株式会社 車載中継装置、情報処理システム、中継装置、情報処理方法、及びプログラム
US11246107B2 (en) * 2018-11-02 2022-02-08 Qualcomm Incorporated Throughput modification for time delayed carriers
EP3800958A1 (en) * 2019-10-04 2021-04-07 Panasonic Intellectual Property Corporation of America Cross-slot scheduling adaptation applicability determination
EP3907906A1 (en) * 2020-05-06 2021-11-10 Telefónica Germany GmbH & Co. OHG A method of handling a degradation of time synchronicity between base stations of a mobile cellular network and a mobile cellular network for carrying out such method
CN116419386A (zh) * 2021-12-31 2023-07-11 华为技术有限公司 时间校准的方法和装置

Family Cites Families (70)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US590881A (en) * 1897-09-28 Electric railway
IL67440A (en) 1982-12-09 1988-08-31 Israel State Compressor unit for split cycle cryogenic coolers
FI920976A0 (fi) * 1992-03-05 1992-03-05 Tecnomen Oy Radiosynkroniseringsfoerfarande foer stoedstationer i ett simulcastingnaet.
US5313457A (en) 1992-04-14 1994-05-17 Trimble Navigation Limited Code position modulation system and method for multiple user satellite communications
SE470037C (sv) * 1992-10-27 1995-04-10 Ericsson Telefon Ab L M Anordning vid mobila telekommunikationssystem för att möjliggöra synkronisering av basstationernas sändare
US5448570A (en) * 1993-03-17 1995-09-05 Kyocera Corporation System for mutual synchronization and monitoring between base stations
WO1994028643A1 (en) 1993-05-27 1994-12-08 Nokia Telecommunications Oy Base station for a tdma cellular radio network
EP0659326B1 (en) * 1993-06-14 2002-09-04 Telefonaktiebolaget Lm Ericsson Time alignment of transmission in a down-link of a cdma system
US5881100A (en) 1994-09-09 1999-03-09 Omnipoint Corporation Method and apparatus for coherent correlation of a spread spectrum signal
US5784368A (en) * 1994-09-23 1998-07-21 Motorola, Inc. Method and apparatus for providing a synchronous communication environment
KR100201806B1 (ko) * 1994-10-19 1999-06-15 윤종용 무선호출수신기의전원 절약장치 및 방법
JP3116264B2 (ja) 1994-12-07 2000-12-11 松下電器産業株式会社 スペクトル拡散通信受信機
US6177964B1 (en) 1997-08-01 2001-01-23 Microtune, Inc. Broadband integrated television tuner
JP3208305B2 (ja) * 1995-11-14 2001-09-10 シャープ株式会社 通信装置および通信方法
JPH09148978A (ja) * 1995-11-17 1997-06-06 Toshiba Corp 信号伝搬遅延検出方法，フレーム同期方法及び移動体通信システム
US5793772A (en) * 1995-11-29 1998-08-11 Motorola, Inc. Method and apparatus for synchronizing timing of components of a telecommunication system
DE69737670T2 (de) 1996-03-05 2007-10-04 Ntt Docomo Inc. Signalübertragungsverfahren, sender und empfänger für ein mobiles kommunikationssystem
US6014376A (en) * 1996-09-18 2000-01-11 Motorola, Inc. Method for over-the-air synchronization adjustment in a communication system
JP3376224B2 (ja) 1996-10-23 2003-02-10 株式会社エヌ・ティ・ティ・ドコモ Ｄｓ−ｃｄｍａ基地局間非同期セルラ方式における初期同期方法および受信機
JP2845228B2 (ja) * 1996-12-10 1999-01-13 日本電気株式会社 隣接セル同期検出方式
JPH10190562A (ja) * 1996-12-26 1998-07-21 Toshiba Corp 移動通信システムの基地局間フレーム同期方式およびこの方式を適用した基地局装置
JP3373746B2 (ja) 1997-01-07 2003-02-04 株式会社鷹山 Ｄｓ−ｃｄｍａ基地局間非同期セルラ方式における初期同期方法および受信機
US6526145B2 (en) 1997-01-29 2003-02-25 David M. Marzahn Data encryptor/decryptor using variable in-place I/O
JPH10304437A (ja) * 1997-04-30 1998-11-13 Fujitsu Ltd 無線区間同期監視方式及び該方式による無線基地局装置
ES2203802T3 (es) * 1997-05-09 2004-04-16 Nokia Corporation Metodo para determinar diferencias de temporizacion entre transmisores de radiocomunicaciones, red de radiocomunicaciones que utiliza dicho metodo y estacion movil correspondiente.
US5991330A (en) 1997-06-27 1999-11-23 Telefonaktiebolaget L M Ericsson (Pub1) Mobile Station synchronization within a spread spectrum communication systems
US5930366A (en) 1997-08-29 1999-07-27 Telefonaktiebolaget L M Ericsson Synchronization to a base station and code acquisition within a spread spectrum communication system
US5872774A (en) * 1997-09-19 1999-02-16 Qualcomm Incorporated Mobile station assisted timing synchronization in a CDMA communication system
US6307840B1 (en) * 1997-09-19 2001-10-23 Qualcomm Incorporated Mobile station assisted timing synchronization in CDMA communication system
AU754257B2 (en) 1997-10-10 2002-11-07 Qualcomm Incorporated Multi-layered PN code spreading in a multi-user communications system
JP3385200B2 (ja) 1997-11-07 2003-03-10 株式会社エヌ・ティ・ティ・ドコモ 移動通信システムにおける信号の伝送方法および拡散符号同期法
FI974310A (fi) * 1997-11-24 1999-05-25 Nokia Telecommunications Oy Menetelmä tukiasemien synkronisoimiseksi ja solukkoradiojärjestelmä
US6738381B1 (en) 1997-12-19 2004-05-18 Telefonaktiebolaget Lm Ericsson (Publ) ATM time stamped queuing
US6504845B1 (en) 1997-12-19 2003-01-07 Telefonaktiebolaget Lm Ericsson (Publ) Centralized queuing for ATM node
US6373834B1 (en) 1997-12-19 2002-04-16 Telefonaktiebolaget Lm Ericsson Synchronization for cellular telecommunications network
JP3456134B2 (ja) * 1998-01-14 2003-10-14 三菱電機株式会社 基地局間同期化タイミング確立方法及びｔｄｍａシステム
RU2241312C2 (ru) 1998-02-12 2004-11-27 Телефонактиеболагет Лм Эрикссон (Пабл) Система и способ обеспечения синхронизации базовых станций в асинхронной системе мобильной связи множественного доступа с кодовым разделением каналов
TW428388B (en) 1998-02-20 2001-04-01 Koninkl Philips Electronics Nv A power consumption reduction method in a digital mobile radio system and a mobile radio station
US6208871B1 (en) * 1998-02-27 2001-03-27 Motorola, Inc. Method and apparatus for providing a time adjustment to a wireless communication system
JP3090117B2 (ja) 1998-03-26 2000-09-18 株式会社デンソー スペクトラム拡散信号復調装置
EP0954122A1 (de) * 1998-04-28 1999-11-03 Siemens Aktiengesellschaft Verfahren zum Betreiben eines Funk-Kommunikationssystems und derartiges Funk-Kommunikationssystem
US6230018B1 (en) * 1998-05-14 2001-05-08 Nortel Networks Limited Devices and processing in a mobile radio communication network having calibration terminals
US6381458B1 (en) 1998-05-15 2002-04-30 Telefonaktiebolaget Lm Ericsson (Publ) Method and system for soft handoff control based on access network capacity
US6504830B1 (en) 1998-06-15 2003-01-07 Telefonaktiebolaget Lm Ericsson Publ Method, apparatus, and system for fast base synchronization and sector identification
DE19831569A1 (de) 1998-07-14 2000-01-20 Siemens Ag Verfahren zur Informationsübertragung und Funkstation
EP0977351B1 (en) 1998-07-30 2004-02-18 Motorola Semiconducteurs S.A. Method and apparatus for radio communication
US6131030A (en) 1998-08-19 2000-10-10 Telefonaktiebolaget Lm Ericsson System network and method for the transference of cell handover information
GB9819482D0 (en) * 1998-09-07 1998-10-28 Nokia Telecommunications Oy Communication system
US6539004B1 (en) * 1998-09-17 2003-03-25 Lucent Technologies Inc. Time synchronization of packetized radio signals to base stations
US6223037B1 (en) 1998-10-09 2001-04-24 Nokia Mobile Phones Ltd. Cell selection during loss of service in a telecommunications system
US6339705B1 (en) 1998-10-26 2002-01-15 Telefonaktiebolaget Lm Ericsson Management of multiple types of radio base stations in a telecommunication system
US6205334B1 (en) 1998-11-24 2001-03-20 Ericsson Inc. Accelerated scanning of cellular channels by cellular radiotelephones
US6590881B1 (en) * 1998-12-04 2003-07-08 Qualcomm, Incorporated Method and apparatus for providing wireless communication system synchronization
US6625200B1 (en) 1999-01-25 2003-09-23 Ericsson Inc. Multi-stage CDMA synchronization with parallel execution
KR20010102418A (ko) 1999-02-26 2001-11-15 밀러 럿셀 비 비동기 ｃｄｍａ 기지국 및 동기 ｃｄｍａ 기지국 간의핸드오프 방법 및 시스템
FI107487B (fi) * 1999-03-08 2001-08-15 Nokia Mobile Phones Ltd Datalähetyksen salausmenetelmä radiojärjestelmässä
US6480558B1 (en) 1999-03-17 2002-11-12 Ericsson Inc. Synchronization and cell search methods and apparatus for wireless communications
US6493380B1 (en) * 1999-05-28 2002-12-10 Nortel Networks Limited System and method for estimating signal time of arrival
US6363060B1 (en) 1999-06-30 2002-03-26 Qualcomm Incorporated Method and apparatus for fast WCDMA acquisition
US6483824B1 (en) 1999-07-29 2002-11-19 Qualcomm, Inc. Method and apparatus for acquiring service in a “border area”
JP3439399B2 (ja) * 1999-10-14 2003-08-25 エヌイーシーマイクロシステム株式会社 Ｃｄｍａベースバンド受信装置
TW486914B (en) 1999-12-02 2002-05-11 Ericsson Telefon Ab L M Synchronization of diversity handover destination base station
US7047011B1 (en) * 2000-02-10 2006-05-16 Telefonaktiebolaget Lm Ericsson (Publ) Synchronization in diversity handover
DK1273111T3 (da) * 2000-04-07 2006-07-10 Interdigital Tech Corp Basisstationssynkronisering til trådlöse kommunikationssystemer
EP1154662B1 (en) 2000-05-10 2004-03-03 Mitsubishi Electric Information Technology Centre Europe B.V. Method for allocating secondary synchronisation codes to a base station of a mobile telecommunication system
FR2811367B1 (fr) * 2000-07-04 2003-02-14 Meritor Light Vehicle Sys Ltd Leve-vitre ayant un curseur a deplacement silencieux
US6472258B1 (en) * 2000-11-13 2002-10-29 International Business Machines Corporation Double gate trench transistor
AU2002241925A1 (en) 2001-01-18 2002-07-30 Strix Systems, Inc. System, method and computer-readable medium for wirelessly exchanging communication with a mobile unit
US6826244B2 (en) 2001-02-27 2004-11-30 Interdigital Technology Corporation Initial cell search algorithm for 3G FDD wireless communication systems
US20030203745A1 (en) 2002-04-30 2003-10-30 Chiang Tung Ching Assisted base stations synchronization

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