CA2213195A1 - Mobile-assisted handoff technique - Google Patents

Mobile-assisted handoff technique

Info

Publication number
CA2213195A1
CA2213195A1 CA2213195A CA2213195A CA2213195A1 CA 2213195 A1 CA2213195 A1 CA 2213195A1 CA 2213195 A CA2213195 A CA 2213195A CA 2213195 A CA2213195 A CA 2213195A CA 2213195 A1 CA2213195 A1 CA 2213195A1
Authority
CA
Canada
Prior art keywords
measurements
mobile
adjusted
base stations
handoff technique
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
CA2213195A
Other languages
French (fr)
Other versions
CA2213195C (en
Inventor
Paul Solomon Meche
Donald Vincent Hanley
Larry Dean Chrisman
Michael John Mccarthy
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.)
Nortel Networks Ltd
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 CA2213195A1 publication Critical patent/CA2213195A1/en
Application granted granted Critical
Publication of CA2213195C publication Critical patent/CA2213195C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • 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 mobile-assisted handoff technique for a cellular mobile communications system. A mobile makes measurements of adjacent base stations and reports the measurements to the serving base station. The measurements are adjusted to predict signal measurements that the adjacent base stations would make of the mobile. A full set of adjusted measurements, or a combined set of adjusted measurements and true measurements, made by those base stations with locate receivers, may be used in determining the best cell to hand-off the mobile to.
CA002213195A 1995-02-23 1995-06-21 Mobile-assisted handoff technique Expired - Fee Related CA2213195C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/393,348 US5634192A (en) 1995-02-23 1995-02-23 Mobile-assisted handoff technique
US08/393,348 1995-02-23
PCT/IB1995/000542 WO1996026621A1 (en) 1995-02-23 1995-06-21 Mobile-assisted handoff technique

Publications (2)

Publication Number Publication Date
CA2213195A1 true CA2213195A1 (en) 1996-08-29
CA2213195C CA2213195C (en) 2000-10-10

Family

ID=23554324

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002213195A Expired - Fee Related CA2213195C (en) 1995-02-23 1995-06-21 Mobile-assisted handoff technique

Country Status (6)

Country Link
US (1) US5634192A (en)
EP (1) EP0811299B1 (en)
CN (1) CN1085483C (en)
CA (1) CA2213195C (en)
DE (1) DE69529921T2 (en)
WO (1) WO1996026621A1 (en)

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EP0786917B1 (en) * 1996-01-23 2013-08-21 Ntt Mobile Communications Network Inc. Mobile communication system, network and mobile station
US5774809A (en) * 1996-02-12 1998-06-30 Nokia Mobile Phones Limited Simplified mobile assisted handoff of signal between cells
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US5930711A (en) * 1996-06-24 1999-07-27 Hyundai Electronics Industries Co., Ltd. Handoff test method between mobile communication switching stations
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SE510940C2 (en) * 1996-12-19 1999-07-12 Ericsson Telefon Ab L M Device and method in a communication network for quick handover by identifying predicted carrier signal
US5970407A (en) * 1996-12-31 1999-10-19 Telefonaktiebolaget L M Ericsson (Publ) Compensation for mobile assisted handoff measurement inaccuracies
FI104682B (en) * 1997-02-18 2000-04-14 Nokia Networks Oy Handover in a mobile communication system
US5999816A (en) * 1997-02-18 1999-12-07 Qualcomm Incorporated Method and apparatus for performing mobile assisted hard handoff between communication systems
FI104683B (en) * 1997-02-18 2000-04-14 Nokia Networks Oy Handover in a mobile communication system
CA2411993C (en) * 1997-04-24 2009-05-19 Ntt Mobile Communications Network Inc. Method and system for mobile communications
AU735575B2 (en) * 1997-05-19 2001-07-12 David Boettger Boundary sector hard handoff trigger
US5974320A (en) * 1997-05-21 1999-10-26 Telefonaktiebolaget Lm Ericsson (Publ) Providing a neighborhood zone within a mobile telecommunications network
US6154653A (en) * 1997-05-29 2000-11-28 Samsung Electronics Co., Ltd. Soft swap handoff method in a CDMA cellular system
US5940743A (en) * 1997-06-05 1999-08-17 Nokia Mobile Phones Limited Power control of mobile station transmissions during handoff in a cellular system
US6119002A (en) * 1997-10-06 2000-09-12 Nokia Mobile Phones Limited Mobile station having methods and apparatus for performing neighbor channel measurements from analog control channel
KR100252932B1 (en) * 1997-11-06 2000-04-15 서평원 Method and System for Providing a Inter-frequency Handoff in a CDMA Cellular Telephone System
FI106236B (en) 1998-02-17 2000-12-15 Nokia Networks Oy Measurement reporting in a telecommunication system
FI106285B (en) * 1998-02-17 2000-12-29 Nokia Networks Oy Measurement reporting in a telecommunication system
JPH11262043A (en) * 1998-03-06 1999-09-24 Nec Saitama Ltd Cdma mobile communication system
US6181943B1 (en) * 1998-03-30 2001-01-30 Lucent Technologies Inc. Method and apparatus for inter-frequency hand-off in wireless communication systems
US6324406B1 (en) * 1998-04-27 2001-11-27 Ericsson Inc. Mobile station location determination using radio signal timing values
US6161015A (en) * 1998-05-28 2000-12-12 Motorola, Inc. Method for improving communication coverage in multi-cell communication systems using location information
EP2278767B1 (en) * 1998-06-26 2018-11-07 TQ Delta, LLC Multicarrier communication with variable overhead rate
US6522887B2 (en) * 1998-07-27 2003-02-18 Telefonaktiebolaget Lm Ericsson (Publ) Identifying starting time for making time of arrival measurements
US6546252B1 (en) * 1998-12-18 2003-04-08 Telefonaktiebolaget Lm Ericsson (Publ) System and method for estimating interfrequency measurements used for radio network function
US6205129B1 (en) * 1999-01-15 2001-03-20 Qualcomm Inc. Method and apparatus for variable and fixed forward link rate control in a mobile radio communications system
US6862447B1 (en) 1999-02-16 2005-03-01 Lucent Technologies Inc. Method of making downlink operational measurements in a wireless communication system
CN1254144C (en) * 1999-06-24 2006-04-26 艾利森电话股份有限公司 Network-evaluated handover assisted by both mobile and base-stations
US6377805B1 (en) 1999-08-04 2002-04-23 International Business Machines Corporation Maintaining data communication through neighboring mobile units during handoff
EP1081979A1 (en) 1999-08-31 2001-03-07 TELEFONAKTIEBOLAGET L M ERICSSON (publ) Subscriber station, network control means and method for carrying out inter-frequency measurements in a mobile communication system
US6600917B1 (en) 1999-10-04 2003-07-29 Telefonaktiebolaget Lm Ericsson (Publ) Telecommunications network broadcasting of service capabilities
US6760599B1 (en) * 2000-09-29 2004-07-06 Arraycomm, Inc. Method and apparatus for selecting a base station
US7181218B2 (en) * 2001-04-10 2007-02-20 Telefonaktiebolaget Lm Ericsson (Publ) Commanding handover between differing radio access technologies
US7251228B2 (en) * 2002-03-05 2007-07-31 Lucent Technologies Inc. Method for cell switching in wireless communication systems
US8213994B2 (en) * 2002-08-07 2012-07-03 Interdigital Technology Corporation Mobile communications system and method for providing common channel coverage using beamforming antennas
US8861466B2 (en) 2002-08-07 2014-10-14 Interdigital Technology Corporation Mobile communication system and method for providing common channel coverage using beamforming antennas
TWI240581B (en) * 2002-09-27 2005-09-21 Interdigital Tech Corp Mobile communications system and method for providing mobile unit handover in wireless communication systems that employ beamforming antennas
FR2875366A1 (en) * 2004-09-13 2006-03-17 France Telecom ATTACHMENT OF A MULTI ACCESS TERMINAL TO A COMMUNICATION NETWORK
US7796966B2 (en) * 2005-03-15 2010-09-14 Polaris Wireless, Inc. Estimating the location of a wireless terminal based on calibrated signal-strength measurements
US8543065B2 (en) 2010-11-30 2013-09-24 Motorola Solutions, Inc. Methods for using effective radiated transmit power of a base station at a wireless communication device to determine uplink transmission range and/or to adjust transmit power
US8521158B2 (en) 2010-11-30 2013-08-27 Motorola Solutions, Inc. Wireless communication device using a base station radiated effective transmit power for performing an automatic roaming
US20140357274A1 (en) * 2012-01-20 2014-12-04 Nokia Solutions And Networks Oy Cell handovers
US8867397B2 (en) 2012-10-17 2014-10-21 Motorola Solutions, Inc. Method and apparatus for uplink power control in an orthogonal frequency division multiple access communication system
US10334465B2 (en) * 2015-01-30 2019-06-25 Qualcomm Incorporated RRM based on signal strength measurements in LTE over unlicensed spectrum
US20190123433A1 (en) * 2017-10-25 2019-04-25 Ford Global Technologies, Llc Beamforming for wireless vehicle communication

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US5175867A (en) * 1991-03-15 1992-12-29 Telefonaktiebolaget L M Ericsson Neighbor-assisted handoff in a cellular communications system
US5287544A (en) * 1991-10-17 1994-02-15 Motorola, Inc. Method of channel assignment by matching channel interference with channel link loss
EP0616750B1 (en) * 1991-12-11 2002-08-07 Motorola, Inc. Handover decision algorithm using power budget values
US5257408A (en) * 1992-04-30 1993-10-26 Motorola, Inc. Method for seeking a communication system
DE4393250T1 (en) * 1992-07-01 1994-10-20 Motorola Inc Method for performing a MAHO (Mobile Assisted Hand-Off) in a communication system
US5471670A (en) * 1993-07-02 1995-11-28 Motorola, Inc. Method for determining communciation resource handoffs
US5493563A (en) * 1993-07-26 1996-02-20 Motorola, Inc. Method and apparatus for mobile assisted handoff in a communication system

Also Published As

Publication number Publication date
CA2213195C (en) 2000-10-10
DE69529921D1 (en) 2003-04-17
EP0811299A1 (en) 1997-12-10
CN1175343A (en) 1998-03-04
US5634192A (en) 1997-05-27
EP0811299B1 (en) 2003-03-12
MX9706070A (en) 1997-10-31
CN1085483C (en) 2002-05-22
WO1996026621A1 (en) 1996-08-29
DE69529921T2 (en) 2003-10-09

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20080623