WO1998033288A3 - Method and apparatus for performing soft hand-off in a wireless communication system - Google Patents

Method and apparatus for performing soft hand-off in a wireless communication system Download PDF

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Publication number
WO1998033288A3
WO1998033288A3 PCT/US1998/001058 US9801058W WO9833288A3 WO 1998033288 A3 WO1998033288 A3 WO 1998033288A3 US 9801058 W US9801058 W US 9801058W WO 9833288 A3 WO9833288 A3 WO 9833288A3
Authority
WO
WIPO (PCT)
Prior art keywords
station
base stations
communication
communication system
soft hand
Prior art date
Application number
PCT/US1998/001058
Other languages
French (fr)
Other versions
WO1998033288A2 (en
Inventor
Roberto Padovani
Roy F Quick
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 AT98903590T priority Critical patent/ATE301376T1/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to AU60323/98A priority patent/AU6032398A/en
Priority to IL13109198A priority patent/IL131091A/en
Priority to KR1019997006846A priority patent/KR100561658B1/en
Priority to CA2279314A priority patent/CA2279314C/en
Priority to BRPI9807027A priority patent/BRPI9807027B1/en
Priority to DE69831058T priority patent/DE69831058T2/en
Priority to EP98903590A priority patent/EP0956732B1/en
Priority to JP53208598A priority patent/JP4027989B2/en
Publication of WO1998033288A2 publication Critical patent/WO1998033288A2/en
Publication of WO1998033288A3 publication Critical patent/WO1998033288A3/en
Priority to FI991648A priority patent/FI19991648A/en
Priority to NO19993649A priority patent/NO324444B1/en

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
    • 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
    • H04W36/30—Reselection being triggered by specific parameters by measured or perceived connection quality data
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/20—Selecting an access point

Abstract

A method and apparatus for providing soft hand-off in a mobile communication system. In current systems, members of an active set of base stations (4, 4A, 4B, 4C) are determined by comparing measured pilot energy with fixed thresholds. The value of providing a redundant communication link to a mobile station (2) primarily depends on the energy of other signals being provided to the mobile station (2). In the present invention, the signal strength of each signal transmitted by other base stations (4, 4A, 4B, 4C) in communication with a mobile station (2) is considered when determining whether to add a base station to the set of base stations (4, 4A, 4B, 4C) in communication with the remote station. A base station is added only if the signal received from that base station provides sufficient added value to justify the impact on system capacity.
PCT/US1998/001058 1997-01-29 1998-01-27 Method and apparatus for performing soft hand-off in a wireless communication system WO1998033288A2 (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
BRPI9807027A BRPI9807027B1 (en) 1997-01-29 1998-01-27 method for selecting base stations to communicate with a remote station
AU60323/98A AU6032398A (en) 1997-01-29 1998-01-27 Method and apparatus for performing soft hand-off in a wireless communication system
IL13109198A IL131091A (en) 1997-01-29 1998-01-27 Method and apparatus for performing soft hand-off in a wireless communication system
KR1019997006846A KR100561658B1 (en) 1997-01-29 1998-01-27 Method and apparatus for performing soft hand-off in a wireless communication system
CA2279314A CA2279314C (en) 1997-01-29 1998-01-27 Method and apparatus for performing soft hand-off in a wireless communication system
AT98903590T ATE301376T1 (en) 1997-01-29 1998-01-27 APPARATUS AND METHOD FOR GENTLE HANDOVER IN A WIRELESS COMMUNICATIONS SYSTEM
DE69831058T DE69831058T2 (en) 1997-01-29 1998-01-27 APPARATUS AND METHOD FOR GENTLY SUBMITTING IN A WIRELESS COMMUNICATION SYSTEM
EP98903590A EP0956732B1 (en) 1997-01-29 1998-01-27 Method and apparatus for performing soft hand-off in a wireless communication system
JP53208598A JP4027989B2 (en) 1997-01-29 1998-01-27 Method and apparatus for performing soft handoff in a wireless communication system
FI991648A FI19991648A (en) 1997-01-29 1999-07-26 A method and apparatus for providing a soft handoff in a wireless communication system
NO19993649A NO324444B1 (en) 1997-01-29 1999-07-27 Radio network with mobile stations and means for soft routing

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/790,497 US6151502A (en) 1997-01-29 1997-01-29 Method and apparatus for performing soft hand-off in a wireless communication system
US790,497 1997-01-29

Publications (2)

Publication Number Publication Date
WO1998033288A2 WO1998033288A2 (en) 1998-07-30
WO1998033288A3 true WO1998033288A3 (en) 1998-11-12

Family

ID=25150859

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1998/001058 WO1998033288A2 (en) 1997-01-29 1998-01-27 Method and apparatus for performing soft hand-off in a wireless communication system

Country Status (23)

Country Link
US (1) US6151502A (en)
EP (1) EP0956732B1 (en)
JP (1) JP4027989B2 (en)
KR (2) KR100561658B1 (en)
CN (1) CN1168345C (en)
AR (1) AR011591A1 (en)
AT (1) ATE301376T1 (en)
AU (1) AU6032398A (en)
BR (1) BRPI9807027B1 (en)
CA (1) CA2279314C (en)
DE (1) DE69831058T2 (en)
DK (1) DK0956732T3 (en)
ES (1) ES2245018T3 (en)
FI (1) FI19991648A (en)
ID (1) ID24950A (en)
IL (1) IL131091A (en)
MY (1) MY118178A (en)
NO (1) NO324444B1 (en)
PT (1) PT956732E (en)
RU (1) RU2217871C2 (en)
TW (1) TW546971B (en)
WO (1) WO1998033288A2 (en)
ZA (1) ZA98700B (en)

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