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AU2002218629A1 - Dynamic offset threshold for diversity handover in telecommunications system - Google Patents

Dynamic offset threshold for diversity handover in telecommunications system

Info

Publication number
AU2002218629A1
AU2002218629A1 AU2002218629A AU1862902A AU2002218629A1 AU 2002218629 A1 AU2002218629 A1 AU 2002218629A1 AU 2002218629 A AU2002218629 A AU 2002218629A AU 1862902 A AU1862902 A AU 1862902A AU 2002218629 A1 AU2002218629 A1 AU 2002218629A1
Authority
AU
Australia
Prior art keywords
handover
offset threshold
dynamic offset
sub
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.)
Abandoned
Application number
AU2002218629A
Inventor
Daniel Jannok
Staffan Johansson
Jonas Ohlsson
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
Publication of AU2002218629A1 publication Critical patent/AU2002218629A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/16—Performing reselection for specific purposes
    • H04W36/18—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection
    • H04W36/185—Performing reselection for specific purposes for allowing seamless reselection, e.g. soft reselection using make before break

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Dc Digital Transmission (AREA)

Abstract

A telecommunications system has a source base station (BS<SUB>S</SUB>) and a destination base station (BS<SUB>D</SUB>), and a handover unit ( 100 ) having a dynamic offset threshold determination unit ( 102 ) which establishes a dynamic offset threshold for starting soft handover. When the dynamic offset threshold for soft handover is exceeded, a preliminary portion of a handover sequence is initiated at the destination base station. The preliminary portion of the handover sequence is initiated so that a time-critical handover sequence activity (such as L 1 uplink synchronization) is well underway, if not completed, by the time the soft handover is actually needed. The dynamic offset threshold for starting handover is based on a probability that the mobile station will engage in the handover. The probability is a statistical probability that handover will actually occur based on handover history of other mobile stations previously and similarly traveling and of the same signal strength. Another portion of the soft handover sequence (e.g., a remaining portion of the soft handover sequence) is initiated when the signal strength from the destination base station as received at the specified mobile station has a predetermined relationship to a fixed offset threshold.
AU2002218629A 2000-12-04 2001-12-04 Dynamic offset threshold for diversity handover in telecommunications system Abandoned AU2002218629A1 (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US25047300P 2000-12-04 2000-12-04
US25047600P 2000-12-04 2000-12-04
US60/250,473 2000-12-04
US60/250,476 2000-12-04
US09/931,580 US6907245B2 (en) 2000-12-04 2001-08-17 Dynamic offset threshold for diversity handover in telecommunications system
US09/931,580 2001-08-17
PCT/SE2001/002682 WO2002047423A2 (en) 2000-12-04 2001-12-04 Dynamic offset threshold for diversity handover in telecommunications system

Publications (1)

Publication Number Publication Date
AU2002218629A1 true AU2002218629A1 (en) 2002-06-18

Family

ID=27400327

Family Applications (1)

Application Number Title Priority Date Filing Date
AU2002218629A Abandoned AU2002218629A1 (en) 2000-12-04 2001-12-04 Dynamic offset threshold for diversity handover in telecommunications system

Country Status (7)

Country Link
US (1) US6907245B2 (en)
EP (1) EP1340397B1 (en)
AT (1) ATE414389T1 (en)
AU (1) AU2002218629A1 (en)
DE (1) DE60136561D1 (en)
TW (1) TW515212B (en)
WO (1) WO2002047423A2 (en)

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Also Published As

Publication number Publication date
US20020068571A1 (en) 2002-06-06
WO2002047423A3 (en) 2002-08-15
EP1340397B1 (en) 2008-11-12
ATE414389T1 (en) 2008-11-15
US6907245B2 (en) 2005-06-14
DE60136561D1 (en) 2008-12-24
TW515212B (en) 2002-12-21
EP1340397A2 (en) 2003-09-03
WO2002047423A2 (en) 2002-06-13

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