WO2000035117A3 - Method and apparatus for providing wireless communication system synchronization - Google Patents

Method and apparatus for providing wireless communication system synchronization Download PDF

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Publication number
WO2000035117A3
WO2000035117A3 PCT/US1999/028705 US9928705W WO0035117A3 WO 2000035117 A3 WO2000035117 A3 WO 2000035117A3 US 9928705 W US9928705 W US 9928705W WO 0035117 A3 WO0035117 A3 WO 0035117A3
Authority
WO
WIPO (PCT)
Prior art keywords
base
base stations
time
network
base station
Prior art date
Application number
PCT/US1999/028705
Other languages
French (fr)
Other versions
WO2000035117A2 (en
Inventor
Mark S Wallace
Edward G Tiedemann Jr
Charles E Wheatley Iii
J Rod Waltson
Original Assignee
Qualcomm Inc
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 to UA2001063744A priority Critical patent/UA76087C2/en
Priority to CA2353453A priority patent/CA2353453C/en
Priority to JP2000587467A priority patent/JP4482645B2/en
Priority to AU31099/00A priority patent/AU769109B2/en
Priority to DE69936536T priority patent/DE69936536T2/en
Priority to MXPA01005574A priority patent/MXPA01005574A/en
Priority to BR9915925-2A priority patent/BR9915925A/en
Priority to EP99965114A priority patent/EP1135875B1/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to IL14354199A priority patent/IL143541A0/en
Publication of WO2000035117A2 publication Critical patent/WO2000035117A2/en
Publication of WO2000035117A3 publication Critical patent/WO2000035117A3/en
Priority to NO20012709A priority patent/NO20012709L/en
Priority to IL143541A priority patent/IL143541A/en
Priority to HK03105314.5A priority patent/HK1053199B/en
Priority to IL179180A priority patent/IL179180A0/en

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
    • H04B7/2687—Inter base stations synchronisation
    • H04B7/2696—Over the air autonomous synchronisation, e.g. by monitoring network activity
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W56/00—Synchronisation arrangements

Abstract

When insufficient traffic is present in the network to maintain synchronization in this manner, other methods must be used. One approach involves making direct measurements of the timing between base stations (602, 604). This is accomplished in one of two ways. The base may interrupt its transmissions on all sectors for a short interval during which it determines the time of arrival of signals from other base stations (602, 604). Given knowledge of the other base station locations, time errors relative to all other base stations (602, 604) may be derived. Alternatively, the base may send a short signal at high power in the mobile transmit band. This time-of-arrival of this signal is measured by the surrounding base stations and the time errors between pairs of base stations are computed. In some cases, a base station (602, 604) may be isolated sufficiently from all other base stations in the network such that direct base-to-base measurement is not viable. In this case, a fixed mobile (606) is placed at a location in the handoff region between the isolated cell and another cell in the network. The fixed mobile (606) either performs measurements of base station pilots on command of the base and reports the timing information, or sends a burst transmission at a specified time and power level to be measured by the base stations.
PCT/US1999/028705 1998-12-04 1999-12-03 Method and apparatus for providing wireless communication system synchronization WO2000035117A2 (en)

Priority Applications (13)

Application Number Priority Date Filing Date Title
UA2001063744A UA76087C2 (en) 1998-12-04 1999-03-12 Device for synchronizing base stations (variants); base station; device for synchronizing timing pulse generators of base stations; system for synchronizing timing pulse generators of base stations (variants)
EP99965114A EP1135875B1 (en) 1998-12-04 1999-12-03 System and base station for providing wireless communication system synchronization
AU31099/00A AU769109B2 (en) 1998-12-04 1999-12-03 Method and apparatus for providing wireless communication system synchronization
DE69936536T DE69936536T2 (en) 1998-12-04 1999-12-03 SYSTEM AND BASE STATION FOR SYNCHRONIZING IN A WIRELESS COMMUNICATION SYSTEM
MXPA01005574A MXPA01005574A (en) 1998-12-04 1999-12-03 Method and apparatus for providing wireless communication system synchronization.
BR9915925-2A BR9915925A (en) 1998-12-04 1999-12-03 Method and equipment for providing wireless communication system synchronization
IL14354199A IL143541A0 (en) 1998-12-04 1999-12-03 Method and apparatus for providing wireless communication system synchronization
CA2353453A CA2353453C (en) 1998-12-04 1999-12-03 Method and apparatus for providing wireless communication system synchronization
JP2000587467A JP4482645B2 (en) 1998-12-04 1999-12-03 Method and apparatus for performing wireless communication system synchronization
NO20012709A NO20012709L (en) 1998-12-04 2001-06-01 Synchronization in wireless communication networks
IL143541A IL143541A (en) 1998-12-04 2001-06-03 Method and apparatus for providing wireless communication system synchronization
HK03105314.5A HK1053199B (en) 1998-12-04 2003-07-23 Method and apparatus for providing wireless communication system synchronization
IL179180A IL179180A0 (en) 1998-12-04 2006-11-09 Method and apparatus for providing wireless communication system synchronization

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/206,037 US6590881B1 (en) 1998-12-04 1998-12-04 Method and apparatus for providing wireless communication system synchronization
US09/206,037 1998-12-04

Publications (2)

Publication Number Publication Date
WO2000035117A2 WO2000035117A2 (en) 2000-06-15
WO2000035117A3 true WO2000035117A3 (en) 2001-01-04

Family

ID=22764723

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1999/028705 WO2000035117A2 (en) 1998-12-04 1999-12-03 Method and apparatus for providing wireless communication system synchronization

Country Status (19)

Country Link
US (2) US6590881B1 (en)
EP (3) EP1848125B1 (en)
JP (1) JP4482645B2 (en)
KR (2) KR100705879B1 (en)
CN (1) CN1215659C (en)
AT (2) ATE367020T1 (en)
AU (1) AU769109B2 (en)
BR (1) BR9915925A (en)
CA (2) CA2737848C (en)
DE (1) DE69936536T2 (en)
ES (1) ES2378474T3 (en)
HK (1) HK1053199B (en)
ID (1) ID30444A (en)
IL (3) IL143541A0 (en)
MX (1) MXPA01005574A (en)
NO (1) NO20012709L (en)
RU (1) RU2233033C2 (en)
UA (1) UA76087C2 (en)
WO (1) WO2000035117A2 (en)

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