EP1354430A1 - Method of synchronising base station transmitters - Google Patents

Method of synchronising base station transmitters

Info

Publication number
EP1354430A1
EP1354430A1 EP02716664A EP02716664A EP1354430A1 EP 1354430 A1 EP1354430 A1 EP 1354430A1 EP 02716664 A EP02716664 A EP 02716664A EP 02716664 A EP02716664 A EP 02716664A EP 1354430 A1 EP1354430 A1 EP 1354430A1
Authority
EP
European Patent Office
Prior art keywords
frequency
time
base stations
acquisition
base station
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.)
Withdrawn
Application number
EP02716664A
Other languages
German (de)
French (fr)
Inventor
Anthony Peter Hulbert
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.)
Nokia Solutions and Networks GmbH and Co KG
Original Assignee
Nokia Siemens Networks GmbH and Co KG
Roke Manor Research Ltd
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
Priority claimed from GB0101200A external-priority patent/GB0101200D0/en
Application filed by Nokia Siemens Networks GmbH and Co KG, Roke Manor Research Ltd filed Critical Nokia Siemens Networks GmbH and Co KG
Publication of EP1354430A1 publication Critical patent/EP1354430A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements
    • H04W56/001—Synchronization between nodes
    • H04W56/0015—Synchronization between nodes one node acting as a reference for the others
    • 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
    • H04B7/2675—Frequency 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
    • H04B7/2668—Arrangements for Wireless Code-Division Multiple Access [CDMA] System Synchronisation

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Small-Scale Networks (AREA)

Abstract

In a communication network comprising a radio network controller (RNC) and anumber of base stations, a method of synchronising base stations of, one of which has the correct time comprising instructing the out-of-synchronisation base stations to search for frequency acquisition transmissions; instructing the base station with th ecorrect time to make a continuous frequency acquisition transmission; allowing one or more base stations to acquire time and frequency of frequency acquisition transmission. The continuous frequency transmission acquisition is preferably done over a time of period of between 0.7 ms and 50 ms.

Claims

10Claims-
1. In a communication network comprising a radio network controller (RNC) and a number of base stations, a method of synchronising base stations of, one of which has the conect time comprising the steps of a) instructing the out-of-synclironisation base stations to search for frequency acquisition transmissions; b) instructing the base station with the conect time to make a continuous frequency acquisition transmission; c) allowing one or more base stations to acquire time and frequency of frequency acquisition transmission.
2. A method as claimed in claim 1 wherein said continuous frequency transmission acquisition is done over a time of period of between 0.7ms and 50ms.
3. A method as claimed in claims 1 or 2 wherein all nodes B's are synchronised in less than one second.
4. A method as claimed in claim 1 wherein when a previously out of synchronisation base station has acquired frequency form the base station with the conect time, the additional step of a) signalling tins to the radio network controller b) and starts to produce its own frequency acquisition transmissions.
5. A method as claimed in any preceding claim wherein the frequency shift acquisition is perfonned in a first coarse step followed by a fine tuning step using an automatic frequency control loop. 11
6. A communication network comprising a radio network controller (RNC) and a number of base stations, and having means to synchronise base stations, one of which can be set to have the conect time comprising: a) means to instruct the out-of-synchronisation base stations to search for frequency acquisition transmissions; b) means to instruct the base station with the conect time to make a continuous frequency acquisition transmission; c) means to allow one or more base stations to acquire time and frequency of frequency acquisition transmission.
7. A network as claimed in claim 6 wherein said continuous frequency transmission acquisition is done over a time of period of between 0.7ms and 50ms.
8. A network as claimed in claims 6 or 7 wherein all nodes B's are synchronised in less than one second.
9. A network as claimed in claim 6 wherein when a previously out of synchronisation base station has acquired frequency form the base station with the correct time, the additional step of a) signalling this to the radio network controller b) and starts to produce its own frequency acquisition transmissions.
10. A network as claimed in any claim 6 to 9 wherein the frequency shift acquisition is performed in a first coarse step followed by a fine tuning step using an automatic frequency control loop.
EP02716664A 2001-01-17 2002-01-16 Method of synchronising base station transmitters Withdrawn EP1354430A1 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
GB0101200 2001-01-17
GB0101200A GB0101200D0 (en) 2001-01-17 2001-01-17 Nodeb frequency acquisition
GB0200698A GB2373143A (en) 2001-01-17 2002-01-14 Synchronising base stations
GB0200698 2002-01-14
PCT/EP2002/000434 WO2002058275A1 (en) 2001-01-17 2002-01-16 Method of synchronising base station transmitters

Publications (1)

Publication Number Publication Date
EP1354430A1 true EP1354430A1 (en) 2003-10-22

Family

ID=26245573

Family Applications (1)

Application Number Title Priority Date Filing Date
EP02716664A Withdrawn EP1354430A1 (en) 2001-01-17 2002-01-16 Method of synchronising base station transmitters

Country Status (4)

Country Link
EP (1) EP1354430A1 (en)
CN (1) CN1199381C (en)
BR (1) BR0203561A (en)
WO (1) WO2002058275A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100370864C (en) * 2004-06-17 2008-02-20 大唐移动通信设备有限公司 Network element time synchronizing method in mobile communication system
JP5926371B2 (en) * 2011-04-26 2016-05-25 テレフオンアクチーボラゲット エルエム エリクソン（パブル） Base station synchronization

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FI920976A0 (en) * 1992-03-05 1992-03-05 Tecnomen Oy RADIOSYNKRONISERINGSFOERFARANDE FOER STOEDSTATIONER I ETT SIMULCASTINGNAET.
AU4072193A (en) * 1993-05-27 1994-12-20 Nokia Telecommunications Oy Base station for a tdma cellular radio network
GB9405297D0 (en) * 1994-03-17 1994-04-27 Roke Manor Research Synchronisation apparatus
US5784368A (en) * 1994-09-23 1998-07-21 Motorola, Inc. Method and apparatus for providing a synchronous communication environment

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO02058275A1 *

Also Published As

Publication number Publication date
CN1199381C (en) 2005-04-27
CN1455995A (en) 2003-11-12
WO2002058275A1 (en) 2002-07-25
BR0203561A (en) 2002-12-24

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