WO2002058275A1 - Method of synchronising base station transmitters - Google Patents

Method of synchronising base station transmitters Download PDF

Info

Publication number
WO2002058275A1
WO2002058275A1 PCT/EP2002/000434 EP0200434W WO02058275A1 WO 2002058275 A1 WO2002058275 A1 WO 2002058275A1 EP 0200434 W EP0200434 W EP 0200434W WO 02058275 A1 WO02058275 A1 WO 02058275A1
Authority
WO
WIPO (PCT)
Prior art keywords
frequency
time
base stations
acquisition
base station
Prior art date
Application number
PCT/EP2002/000434
Other languages
French (fr)
Inventor
Anthony Peter Hulbert
Original Assignee
Roke Manor Research Limited
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 Roke Manor Research Limited filed Critical Roke Manor Research Limited
Priority to BR0203561-8A priority Critical patent/BR0203561A/en
Priority to EP02716664A priority patent/EP1354430A1/en
Publication of WO2002058275A1 publication Critical patent/WO2002058275A1/en

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

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.
PCT/EP2002/000434 2001-01-17 2002-01-16 Method of synchronising base station transmitters WO2002058275A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR0203561-8A BR0203561A (en) 2001-01-17 2002-01-16 Method for synchronizing base station transmitters
EP02716664A EP1354430A1 (en) 2001-01-17 2002-01-16 Method of synchronising base station transmitters

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
GB0101200.4 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
GB0200698.9 2002-01-14

Publications (1)

Publication Number Publication Date
WO2002058275A1 true WO2002058275A1 (en) 2002-07-25

Family

ID=26245573

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2002/000434 WO2002058275A1 (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)

Cited By (1)

* 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

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103503529B (en) * 2011-04-26 2018-06-08 瑞典爱立信有限公司 Base station synchronization

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560079A1 (en) * 1992-03-05 1993-09-15 Tecnomen Oy Method for radiosynchronization of base stations in a simulcasting network
WO1994028643A1 (en) * 1993-05-27 1994-12-08 Nokia Telecommunications Oy Base station for a tdma cellular radio network
GB2287613A (en) * 1994-03-17 1995-09-20 Roke Manor Research Apparatus for synchronising a transceiver with a base station
US5784368A (en) * 1994-09-23 1998-07-21 Motorola, Inc. Method and apparatus for providing a synchronous communication environment

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560079A1 (en) * 1992-03-05 1993-09-15 Tecnomen Oy Method for radiosynchronization of base stations in a simulcasting network
WO1994028643A1 (en) * 1993-05-27 1994-12-08 Nokia Telecommunications Oy Base station for a tdma cellular radio network
GB2287613A (en) * 1994-03-17 1995-09-20 Roke Manor Research Apparatus for synchronising a transceiver with a base station
US5784368A (en) * 1994-09-23 1998-07-21 Motorola, Inc. Method and apparatus for providing a synchronous communication environment

Cited By (1)

* 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

Also Published As

Publication number Publication date
BR0203561A (en) 2002-12-24
EP1354430A1 (en) 2003-10-22
CN1199381C (en) 2005-04-27
CN1455995A (en) 2003-11-12

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