CA2216635A1 - Method and apparatus for mobile unit assisted cdma to alternative system hard handoff - Google Patents

Method and apparatus for mobile unit assisted cdma to alternative system hard handoff

Info

Publication number
CA2216635A1
CA2216635A1 CA002216635A CA2216635A CA2216635A1 CA 2216635 A1 CA2216635 A1 CA 2216635A1 CA 002216635 A CA002216635 A CA 002216635A CA 2216635 A CA2216635 A CA 2216635A CA 2216635 A1 CA2216635 A1 CA 2216635A1
Authority
CA
Canada
Prior art keywords
base stations
mobile unit
pilot signal
cdma
border
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.)
Granted
Application number
CA002216635A
Other languages
French (fr)
Other versions
CA2216635C (en
Inventor
Lindsay A. Weaver, Jr.
Gwain Bayley
Edward G. Tiedemann, Jr.
Klein S. Gilhousen
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.)
Qualcomm Inc
Original Assignee
Individual
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=23636733&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=CA2216635(A1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Individual filed Critical Individual
Publication of CA2216635A1 publication Critical patent/CA2216635A1/en
Application granted granted Critical
Publication of CA2216635C publication Critical patent/CA2216635C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H04W36/0055—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
    • H04W48/00—Access restriction; Network selection; Access point selection
    • H04W48/08—Access restriction or access information delivery, e.g. discovery data delivery
    • H04W48/12—Access restriction or access information delivery, e.g. discovery data delivery using downlink control channel

Abstract

A method and apparatus for providing a reliable means to perform handoff from a code division multiple access (CDMA) system using a pilot signal to an alternative access technique system. Simple pilot box circuitry (350) is added to a set of border base stations (C2 A - C2 R). The border base stations (C2 A - C2 R) are base stations which operate only in the alternative access technique and which have coverage areas which are contiguous with coverage areas of CDMA operation base stations. The mobile unit monitors for the pilot signal from the border base stations (C2 A - C2 R) in the same manner as it monitors for pilot signals from the CDMA operation base stations (ClA
- Cl g). When the mobile unit detects the pilot signal corresponding to a border base station (C2 A - C2 R), it notifies a system controller (202) in accordance with standard operation. The system controller (202) is aware that the pilot signal corresponds to a border base station (C2 A - C2 R) and thus triggers a hard handoff process to the alternative access technique system in response thereto.
CA002216635A 1995-03-30 1996-03-19 Method and apparatus for mobile unit assisted cdma to alternative system hard handoff Expired - Lifetime CA2216635C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/413,306 US5594718A (en) 1995-03-30 1995-03-30 Method and apparatus for providing mobile unit assisted hard handoff from a CDMA communication system to an alternative access communication system
US413,306 1995-03-30
PCT/US1996/004158 WO1996031078A1 (en) 1995-03-30 1996-03-19 Method and apparatus for mobile unit assisted cdma to alternative system hard handoff

Publications (2)

Publication Number Publication Date
CA2216635A1 true CA2216635A1 (en) 1996-10-03
CA2216635C CA2216635C (en) 2004-07-27

Family

ID=23636733

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002216635A Expired - Lifetime CA2216635C (en) 1995-03-30 1996-03-19 Method and apparatus for mobile unit assisted cdma to alternative system hard handoff

Country Status (9)

Country Link
US (1) US5594718A (en)
EP (1) EP0818117A1 (en)
KR (1) KR100414409B1 (en)
CN (1) CN1086267C (en)
AR (1) AR000426A1 (en)
AU (1) AU697734B2 (en)
BR (1) BR9607948B1 (en)
CA (1) CA2216635C (en)
WO (1) WO1996031078A1 (en)

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Also Published As

Publication number Publication date
KR100414409B1 (en) 2004-04-03
CN1179873A (en) 1998-04-22
US5594718A (en) 1997-01-14
WO1996031078A1 (en) 1996-10-03
CA2216635C (en) 2004-07-27
KR19980703494A (en) 1998-11-05
BR9607948A (en) 1998-07-14
CN1086267C (en) 2002-06-12
AU697734B2 (en) 1998-10-15
BR9607948B1 (en) 2011-03-09
AU5432396A (en) 1996-10-16
EP0818117A1 (en) 1998-01-14
AR000426A1 (en) 1997-06-18

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