CA2228744A1 - Method and apparatus for time division duplex pilot signal generation - Google Patents

Method and apparatus for time division duplex pilot signal generation

Info

Publication number
CA2228744A1
CA2228744A1 CA002228744A CA2228744A CA2228744A1 CA 2228744 A1 CA2228744 A1 CA 2228744A1 CA 002228744 A CA002228744 A CA 002228744A CA 2228744 A CA2228744 A CA 2228744A CA 2228744 A1 CA2228744 A1 CA 2228744A1
Authority
CA
Canada
Prior art keywords
base stations
pilot signal
pilot
border
cdma
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
CA002228744A
Other languages
French (fr)
Other versions
CA2228744C (en
Inventor
Lindsay A. Weaver, Jr.
Gwain Bayley
Edward G. Tiedemann
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
Application filed by Individual filed Critical Individual
Publication of CA2228744A1 publication Critical patent/CA2228744A1/en
Application granted granted Critical
Publication of CA2228744C publication Critical patent/CA2228744C/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 (C2A-C2R). The border base stations are base stations (C2A-C2R) which operate only in the alternative access technique and which have coverage areas which are contiguous with coverage areas of CDMA operation base stations (C1H-C1S). The mobile unit (10) monitors for the pilot signal from the border base stations (C2A-C2R) in the same manner as it monitors for pilot signals from the CDMA operation base stations (C1A-C1S). When the mobile unit (10) detects the pilot signal corresponding to a border base station (C2A-C2R), 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 and thus triggers a hard handoff process to the alternative access technique system in response thereto. The border base stations (C2A-C2R) use a time division duplex technique to monitor a pilot and synchronization sequence from a neighboring one of the CDMA operation base stations to obtain an estimate of absolute system time.
CA002228744A 1995-08-15 1996-08-07 Method and apparatus for time division duplex pilot signal generation Expired - Lifetime CA2228744C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/515,501 US5680395A (en) 1995-08-15 1995-08-15 Method and apparatus for time division duplex pilot signal generation
US08/515,501 1995-08-15
PCT/US1996/013009 WO1997007646A1 (en) 1995-08-15 1996-08-07 Method and apparatus for time division duplex pilot signal generation

Publications (2)

Publication Number Publication Date
CA2228744A1 true CA2228744A1 (en) 1997-02-27
CA2228744C CA2228744C (en) 2005-06-21

Family

ID=24051628

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002228744A Expired - Lifetime CA2228744C (en) 1995-08-15 1996-08-07 Method and apparatus for time division duplex pilot signal generation

Country Status (16)

Country Link
US (1) US5680395A (en)
EP (1) EP0845195B1 (en)
JP (1) JP3129741B2 (en)
KR (1) KR19990036373A (en)
CN (1) CN1098611C (en)
AR (1) AR003192A1 (en)
AT (1) ATE280480T1 (en)
AU (1) AU703396B2 (en)
CA (1) CA2228744C (en)
DE (1) DE69633672T2 (en)
ES (1) ES2230567T3 (en)
HK (1) HK1010964A1 (en)
IL (1) IL119057A0 (en)
TW (1) TW308763B (en)
WO (1) WO1997007646A1 (en)
ZA (1) ZA966506B (en)

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US7003058B2 (en) * 2002-02-27 2006-02-21 The Boeing Company Polarization division duplexing with cross polarization interference canceller
US7768974B2 (en) * 2003-02-03 2010-08-03 Alcatel-Lucent Method and arrangement for generating pilot beacons in wireless communication systems
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Also Published As

Publication number Publication date
US5680395A (en) 1997-10-21
AU703396B2 (en) 1999-03-25
JP3129741B2 (en) 2001-01-31
IL119057A0 (en) 1996-11-14
EP0845195B1 (en) 2004-10-20
JPH11508429A (en) 1999-07-21
WO1997007646A1 (en) 1997-02-27
MX9801174A (en) 1998-07-31
CN1098611C (en) 2003-01-08
AU6721796A (en) 1997-03-12
ATE280480T1 (en) 2004-11-15
KR19990036373A (en) 1999-05-25
TW308763B (en) 1997-06-21
EP0845195A1 (en) 1998-06-03
ES2230567T3 (en) 2005-05-01
DE69633672T2 (en) 2005-10-20
AR003192A1 (en) 1998-07-08
CN1192843A (en) 1998-09-09
HK1010964A1 (en) 1999-07-02
ZA966506B (en) 1998-03-09
CA2228744C (en) 2005-06-21
DE69633672D1 (en) 2004-11-25

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EEER Examination request
MKEX Expiry

Effective date: 20160808

MKEX Expiry

Effective date: 20160808