WO2002047400A3 - Using statistically ascertained position for starting synchronization searcher during diversity handover - Google Patents

Using statistically ascertained position for starting synchronization searcher during diversity handover Download PDF

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Publication number
WO2002047400A3
WO2002047400A3 PCT/SE2001/002685 SE0102685W WO0247400A3 WO 2002047400 A3 WO2002047400 A3 WO 2002047400A3 SE 0102685 W SE0102685 W SE 0102685W WO 0247400 A3 WO0247400 A3 WO 0247400A3
Authority
WO
WIPO (PCT)
Prior art keywords
time position
base station
synchronization
source 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.)
Ceased
Application number
PCT/SE2001/002685
Other languages
French (fr)
Other versions
WO2002047400A2 (en
Inventor
Johansson Staffan
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.)
Telefonaktiebolaget LM Ericsson AB
Original Assignee
Telefonaktiebolaget LM Ericsson AB
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 Telefonaktiebolaget LM Ericsson AB filed Critical Telefonaktiebolaget LM Ericsson AB
Priority to EP01270067A priority Critical patent/EP1340393B1/en
Priority to DE60132802T priority patent/DE60132802D1/en
Priority to AU2002218630A priority patent/AU2002218630A1/en
Publication of WO2002047400A2 publication Critical patent/WO2002047400A2/en
Publication of WO2002047400A3 publication Critical patent/WO2002047400A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/324—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by mobility data, e.g. speed data

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Synchronisation In Digital Transmission Systems (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

A code division multiple access communication system comprises a source base station (BSS), a destination base station (BS¿D) having a synchronization searcher (S), and a time position estimator (100) which establishes a start position of a synchronization search window for the synchronization searcher of the destination station. In accordance with an aspect of the present invention, the time position estimator establishes the start position (SP) of the synchronization search window based on a statistical estimate of the time position at which other mobile stations previously initiated handover from the source base station to the destination base station. In a non-limiting example embodiment, the time position estimator ueses an average time position (T¿new?) at which other mobile sations previously initiated handover from the source base station to the destination base station as the statistical estimate. In an example illustrated embodiment, the time position estimator is situated at a radio network control node (26) of the code division multiple access communication system, but can be located at other nodes. In another aspect of the invention, the time position estimator maintains a table (110) which, for each of plural scenarios of source base stations and destination base stations, stores a corresponding scenario-specific start time position. In accordance with yet another aspect of the present invention, if the mobile station is not found at the start time position, the synchronization searcher attempts to find the transmission of the mobile station by looking at one or more search window positions which neighbor the start time position.
PCT/SE2001/002685 2000-12-04 2001-12-04 Using statistically ascertained position for starting synchronization searcher during diversity handover Ceased WO2002047400A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP01270067A EP1340393B1 (en) 2000-12-04 2001-12-04 Using statistically ascertained position for starting synchronization searcher during diversity handover
DE60132802T DE60132802D1 (en) 2000-12-04 2001-12-04 USE OF THE STATISTICALLY DETERMINED POSITION TO START A SYNCHRONIZATION SEARCH DURING DIVERSITY DELIVERY
AU2002218630A AU2002218630A1 (en) 2000-12-04 2001-12-04 Using statistically ascertained position for starting synchronization searcher during diversity handover

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US25047400P 2000-12-04 2000-12-04
US60/250,474 2000-12-04

Publications (2)

Publication Number Publication Date
WO2002047400A2 WO2002047400A2 (en) 2002-06-13
WO2002047400A3 true WO2002047400A3 (en) 2002-11-28

Family

ID=22947902

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE2001/002685 Ceased WO2002047400A2 (en) 2000-12-04 2001-12-04 Using statistically ascertained position for starting synchronization searcher during diversity handover

Country Status (6)

Country Link
EP (1) EP1340393B1 (en)
AT (1) ATE386407T1 (en)
AU (1) AU2002218630A1 (en)
DE (1) DE60132802D1 (en)
ES (1) ES2300304T3 (en)
WO (1) WO2002047400A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1541489B (en) 2001-08-14 2012-05-30 高通股份有限公司 Method and apparatus for wireless network connectivity
GB2452015B (en) * 2007-06-29 2010-02-10 Motorola Inc Synchronizer, base station, system and method for use in mobile communications

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5152012A (en) * 1987-07-27 1992-09-29 Schwob Pierre R Broadcast receiver capable of automatically updating location and performing spiral searching
US5790589A (en) * 1996-08-14 1998-08-04 Qualcomm Incorporated System and method for rapidly reacquiring a pilot channel
WO1999023847A1 (en) * 1997-10-31 1999-05-14 Motorola Inc. Method and apparatus for handoff within a communication system
WO2000051393A1 (en) * 1999-02-26 2000-08-31 Qualcomm Incorporated Method and system for handoff between an asynchronous cdma base station and a synchronous cdma base station
WO2001017125A1 (en) * 1999-08-31 2001-03-08 Qualcomm Incorporated Method and apparatus for reducing pilot search times utilizing mobile station location information

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5152012A (en) * 1987-07-27 1992-09-29 Schwob Pierre R Broadcast receiver capable of automatically updating location and performing spiral searching
US5790589A (en) * 1996-08-14 1998-08-04 Qualcomm Incorporated System and method for rapidly reacquiring a pilot channel
WO1999023847A1 (en) * 1997-10-31 1999-05-14 Motorola Inc. Method and apparatus for handoff within a communication system
WO2000051393A1 (en) * 1999-02-26 2000-08-31 Qualcomm Incorporated Method and system for handoff between an asynchronous cdma base station and a synchronous cdma base station
WO2001017125A1 (en) * 1999-08-31 2001-03-08 Qualcomm Incorporated Method and apparatus for reducing pilot search times utilizing mobile station location information

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IIGYU K ET AL: "Performance analysis of uplink handover searcher in asynchronous WCDMA system.", IEEE ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE 2001, 2001, pages 286 - 290, XP002902476, ISBN: 0-7803-7005-8 *

Also Published As

Publication number Publication date
WO2002047400A2 (en) 2002-06-13
EP1340393B1 (en) 2008-02-13
AU2002218630A1 (en) 2002-06-18
DE60132802D1 (en) 2008-03-27
ES2300304T3 (en) 2008-06-16
ATE386407T1 (en) 2008-03-15
EP1340393A2 (en) 2003-09-03

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