NO20002640L - Procedure for synchronizing base stations, as well as cellular system - Google Patents
Procedure for synchronizing base stations, as well as cellular systemInfo
- Publication number
- NO20002640L NO20002640L NO20002640A NO20002640A NO20002640L NO 20002640 L NO20002640 L NO 20002640L NO 20002640 A NO20002640 A NO 20002640A NO 20002640 A NO20002640 A NO 20002640A NO 20002640 L NO20002640 L NO 20002640L
- Authority
- NO
- Norway
- Prior art keywords
- base stations
- terminal
- reference signal
- procedure
- communicating
- Prior art date
Links
Classifications
-
- 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
- H04B7/2684—Synchronisation of a mobile station with more than one base station
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
Oppfinnelsen angår en fremgangsmåte for synkronisering av base- stasjoner, og et celledelt radiosystem som i hver celle omfatter minst en basestasjon (204, 206) og et antall terminaler (214, 216). Basestasjonene sender et referansesignal, og terminalene kan kommunisere samtidig med en eller flere basestasjoner og samtidig motta referansesignalet fra flere base- stasjoner enn en. For å synkronisere basestasjonen lett, måler terminalen tidsforskjellen mellom et referansesignal som sendes av en basestasjon som ikke kommuniserer med terminalen, og ett eller flere referansesignaler som sendes fra basestasjoner som kommuniserer med terminalen. Terminalen rapporterer den målte forskjellen til den ene eller de flere basestasjonene som kommuniserer med terminalen. Den ene eller de flere basestasjonene er inn- rettet for å justere, på grunnlag av den målte tidsforskjellen, tidsstyringen av signalene de har sendt til terminalen, i forhold til hverandre.The invention relates to a method for synchronizing base stations, and a cellular radio system comprising in each cell at least one base station (204, 206) and a plurality of terminals (214, 216). The base stations send a reference signal, and the terminals can communicate simultaneously with one or more base stations and at the same time receive the reference signal from more base stations than one. To easily synchronize the base station, the terminal measures the time difference between a reference signal transmitted by a base station not communicating with the terminal and one or more reference signals sent from base stations communicating with the terminal. The terminal reports the measured difference to one or more base stations communicating with the terminal. One or more base stations are arranged to adjust, based on the measured time difference, the timing of the signals they have sent to the terminal relative to each other.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FI974310A FI974310A (en) | 1997-11-24 | 1997-11-24 | A method for synchronizing base stations and a cellular radio system |
PCT/FI1998/000919 WO1999030519A1 (en) | 1997-11-24 | 1998-11-23 | Base station synchronization method and cellular system |
Publications (2)
Publication Number | Publication Date |
---|---|
NO20002640D0 NO20002640D0 (en) | 2000-05-23 |
NO20002640L true NO20002640L (en) | 2000-05-23 |
Family
ID=8550000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NO20002640A NO20002640L (en) | 1997-11-24 | 2000-05-23 | Procedure for synchronizing base stations, as well as cellular system |
Country Status (7)
Country | Link |
---|---|
EP (1) | EP1034673A1 (en) |
JP (1) | JP2001526509A (en) |
CN (1) | CN1279867A (en) |
AU (1) | AU1239599A (en) |
FI (1) | FI974310A (en) |
NO (1) | NO20002640L (en) |
WO (1) | WO1999030519A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6611507B1 (en) * | 1999-07-30 | 2003-08-26 | Nokia Corporation | System and method for effecting information transmission and soft handoff between frequency division duplex and time division duplex communications systems |
DE1273112T1 (en) * | 2000-04-06 | 2003-05-28 | Interdigital Tech Corp | SYNCHRONIZATION OF PROGRESSION AND DEVIATION |
EP1605610B1 (en) | 2000-04-07 | 2014-03-26 | InterDigital Technology Corporation | Base station synchronization for wireless communication systems |
US6826244B2 (en) | 2001-02-27 | 2004-11-30 | Interdigital Technology Corporation | Initial cell search algorithm for 3G FDD wireless communication systems |
US7813311B2 (en) | 2002-02-05 | 2010-10-12 | Interdigital Technology Corporation | Method and apparatus for synchronizing base stations |
US6944142B2 (en) * | 2003-05-13 | 2005-09-13 | Interdigital Technology Corporation | Method for soft and softer handover in time division duplex code division multiple access (TDD-CDMA) networks |
EP1566901A1 (en) * | 2004-02-18 | 2005-08-24 | Siemens Aktiengesellschaft | Method for synchronising a radio communication system |
CN100428653C (en) * | 2004-11-16 | 2008-10-22 | 戴闽鲁 | Inter-base-station time synchronizing relation and TDD cochannel inter ference base station determining method |
JP5128590B2 (en) * | 2006-06-14 | 2013-01-23 | コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ | Method for communicating data in a communication system |
CN101237272B (en) * | 2007-02-02 | 2012-12-19 | 中兴通讯股份有限公司 | RF channel synchronization system and method |
CN101369824B (en) * | 2008-10-21 | 2012-03-28 | 北京北方烽火科技有限公司 | Base station step-out detection apparatus and method |
EP2353240A1 (en) | 2008-11-06 | 2011-08-10 | Nokia Siemens Networks OY | Apparatus and method for decentralized synchronization |
US20100278198A1 (en) * | 2009-04-30 | 2010-11-04 | Nokia Corporation | Method and apparatus for providing quantization of synchronization signals |
CN103313250B (en) | 2012-03-16 | 2016-09-28 | 华为技术有限公司 | Cell configuring method and synchronous method, subscriber equipment and base station |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP3250762B2 (en) * | 1993-05-21 | 2002-01-28 | 株式会社エヌ・ティ・ティ・ドコモ | Mobile communication system base station synchronization method |
EP0659326B1 (en) * | 1993-06-14 | 2002-09-04 | Telefonaktiebolaget Lm Ericsson | Time alignment of transmission in a down-link of a cdma system |
EP0845877A3 (en) * | 1996-11-28 | 2002-03-27 | Oki Electric Industry Co., Ltd. | Mobile communication system for accomplishing handover with phase difference of frame sync signals corrected |
-
1997
- 1997-11-24 FI FI974310A patent/FI974310A/en unknown
-
1998
- 1998-11-23 EP EP98955625A patent/EP1034673A1/en not_active Withdrawn
- 1998-11-23 WO PCT/FI1998/000919 patent/WO1999030519A1/en not_active Application Discontinuation
- 1998-11-23 AU AU12395/99A patent/AU1239599A/en not_active Abandoned
- 1998-11-23 JP JP2000524946A patent/JP2001526509A/en active Pending
- 1998-11-23 CN CN 98811494 patent/CN1279867A/en active Pending
-
2000
- 2000-05-23 NO NO20002640A patent/NO20002640L/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
AU1239599A (en) | 1999-06-28 |
FI974310A0 (en) | 1997-11-24 |
CN1279867A (en) | 2001-01-10 |
JP2001526509A (en) | 2001-12-18 |
EP1034673A1 (en) | 2000-09-13 |
FI974310A (en) | 1999-05-25 |
NO20002640D0 (en) | 2000-05-23 |
WO1999030519A1 (en) | 1999-06-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
FC2A | Withdrawal, rejection or dismissal of laid open patent application |