WO1998032262A3 - Method and apparatus for performing mobile assisted hard handoff between communication systems - Google Patents

Method and apparatus for performing mobile assisted hard handoff between communication systems Download PDF

Info

Publication number
WO1998032262A3
WO1998032262A3 PCT/US1997/023650 US9723650W WO9832262A3 WO 1998032262 A3 WO1998032262 A3 WO 1998032262A3 US 9723650 W US9723650 W US 9723650W WO 9832262 A3 WO9832262 A3 WO 9832262A3
Authority
WO
WIPO (PCT)
Prior art keywords
handoff
hard handoff
mobile station
communication systems
assist
Prior art date
Application number
PCT/US1997/023650
Other languages
French (fr)
Other versions
WO1998032262A2 (en
Inventor
Edward G Tiedemann Jr
Tao Chen
Charles E Wheatley Iii
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 CA2277772A priority Critical patent/CA2277772C/en
Priority to DE69737606T priority patent/DE69737606T2/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to NZ336486A priority patent/NZ336486A/en
Priority to EA199900660A priority patent/EA001724B1/en
Priority to IL15676497A priority patent/IL156764A0/en
Priority to BR9714321-9A priority patent/BR9714321A/en
Priority to EP97954204A priority patent/EP0956679B1/en
Priority to IL13073497A priority patent/IL130734A/en
Priority to UA99073872A priority patent/UA45478C2/en
Priority to AU58044/98A priority patent/AU742513B2/en
Priority to JP53437398A priority patent/JP4234209B2/en
Priority to KR1019997006432A priority patent/KR100560982B1/en
Publication of WO1998032262A2 publication Critical patent/WO1998032262A2/en
Publication of WO1998032262A3 publication Critical patent/WO1998032262A3/en
Priority to HK00102846.2A priority patent/HK1023894A1/en
Priority to IL156764A priority patent/IL156764A/en
Priority to IL198051A priority patent/IL198051A/en
Priority to IL205567A priority patent/IL205567A0/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0083—Determination of parameters used for hand-off, e.g. generation or modification of neighbour cell lists
    • H04W36/0085—Hand-off measurements
    • H04W36/0094—Definition of hand-off measurement parameters
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0066—Transmission or use of information for re-establishing the radio link of control information between different types of networks in order to establish a new radio link in the target network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0079—Transmission or use of information for re-establishing the radio link in case of hand-off failure or rejection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/0005—Control or signalling for completing the hand-off
    • H04W36/0055—Transmission or use of information for re-establishing the radio link
    • H04W36/0061—Transmission or use of information for re-establishing the radio link of neighbour cell information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/14—Reselecting a network or an air interface
    • 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
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

A method and apparatus for performing inter-system hard handoff between communication systems (S1, S2) or inter-frequency hard handoff within a CDMA communication system is disclosed. The purpose of this invention is to reduce the probability of dropped calls during intersystem hard handoff. In the event that a hard handoff attempt is unsuccessful, the mobile station (18) will return to the original system (S1) with information which the communication system of the present invention uses to assist in the performance of future handoff attempts. Alternatively, with no handoff attempt made, the mobile station (18) monitors the destination system (S2), then returns to the original system (S1) with information used to assist in subsequent handoff attempts. The information returned from monitoring a CDMA system consists of results of a search for one or more pilots given at offsets in a specific list provided to the mobile station (18) by the base station (B1-B5) or a set of offsets based upon a predetermined search algorithm.
PCT/US1997/023650 1997-01-15 1997-12-19 Method and apparatus for performing mobile assisted hard handoff between communication systems WO1998032262A2 (en)

Priority Applications (16)

Application Number Priority Date Filing Date Title
UA99073872A UA45478C2 (en) 1997-01-15 1997-12-19 METHOD OF RIGID TRANSFER BETWEEN MOBILE SUBSCRIBER PARTICIPATION SYSTEMS (OPTIONS)
IL13073497A IL130734A (en) 1997-01-15 1997-12-19 Method and apparatus for performing mobile assisted hard handoff between communication systems
NZ336486A NZ336486A (en) 1997-01-15 1997-12-19 Performing assisted hard handoff between different systems in mobile phone system
EA199900660A EA001724B1 (en) 1997-01-15 1997-12-19 Method and apparatus for performing mobile assisted hard handoff between communication system
IL15676497A IL156764A0 (en) 1997-01-15 1997-12-19 Method and apparatus for performing mobile assisted hard handoff between communication systems
BR9714321-9A BR9714321A (en) 1997-01-15 1997-12-19 Method and equipment to effect assisted mobile hard transfer between communication systems
DE69737606T DE69737606T2 (en) 1997-01-15 1997-12-19 Method and apparatus for mobile supported hard handover between communication systems
CA2277772A CA2277772C (en) 1997-01-15 1997-12-19 Method and apparatus for performing mobile assisted hard handoff between communication systems
EP97954204A EP0956679B1 (en) 1997-01-15 1997-12-19 Method and apparatus for performing mobile assisted hard handoff between communication systems
JP53437398A JP4234209B2 (en) 1997-01-15 1997-12-19 Method and apparatus for performing inter-communication hard handoff assisted by mobile station
AU58044/98A AU742513B2 (en) 1997-01-15 1997-12-19 Method and apparatus for performing mobile assisted hard handoff between communication systems
KR1019997006432A KR100560982B1 (en) 1997-01-15 1997-12-19 Method and apparatus for performing mobile assisted hard handoff between communication systems
HK00102846.2A HK1023894A1 (en) 1997-01-15 2000-05-12 Method and apparatus for performing mobile assisted hard handoff between communication systems
IL156764A IL156764A (en) 1997-01-15 2003-07-03 Method and apparatus for performing mobile assisted hard handoff between communication systems
IL198051A IL198051A (en) 1997-01-15 2009-04-06 Method and apparatus for performing mobile assisted hard handoff between communication systems
IL205567A IL205567A0 (en) 1997-01-15 2010-05-05 Method and apparatus for performing mobile assisted hard handoff between communication systems

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/784,280 US5940761A (en) 1997-01-15 1997-01-15 Method and apparatus for performing mobile assisted hard handoff between communication systems
US784,280 1997-01-15

Publications (2)

Publication Number Publication Date
WO1998032262A2 WO1998032262A2 (en) 1998-07-23
WO1998032262A3 true WO1998032262A3 (en) 1998-12-23

Family

ID=25131948

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1997/023650 WO1998032262A2 (en) 1997-01-15 1997-12-19 Method and apparatus for performing mobile assisted hard handoff between communication systems

Country Status (20)

Country Link
US (3) US5940761A (en)
EP (1) EP0956679B1 (en)
JP (1) JP4234209B2 (en)
KR (1) KR100560982B1 (en)
CN (2) CN101616464B (en)
AT (1) ATE359635T1 (en)
AU (1) AU742513B2 (en)
BR (1) BR9714321A (en)
CA (1) CA2277772C (en)
DE (1) DE69737606T2 (en)
EA (1) EA001724B1 (en)
ES (1) ES2277365T3 (en)
HK (1) HK1023894A1 (en)
IL (4) IL130734A (en)
NZ (1) NZ336486A (en)
TR (1) TR199901658T2 (en)
TW (1) TW365096B (en)
UA (1) UA45478C2 (en)
WO (1) WO1998032262A2 (en)
ZA (1) ZA9882B (en)

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