WO2004025975A3 - Cellular network handoff decision mechanism - Google Patents

Cellular network handoff decision mechanism Download PDF

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Publication number
WO2004025975A3
WO2004025975A3 PCT/US2003/028353 US0328353W WO2004025975A3 WO 2004025975 A3 WO2004025975 A3 WO 2004025975A3 US 0328353 W US0328353 W US 0328353W WO 2004025975 A3 WO2004025975 A3 WO 2004025975A3
Authority
WO
WIPO (PCT)
Prior art keywords
interval
determining
handoff decision
signal strength
cellular network
Prior art date
Application number
PCT/US2003/028353
Other languages
French (fr)
Other versions
WO2004025975A2 (en
Inventor
Brian Mark
Alexe E Leu
Original Assignee
George Mason Intellectual Prop
Brian Mark
Alexe E Leu
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 George Mason Intellectual Prop, Brian Mark, Alexe E Leu filed Critical George Mason Intellectual Prop
Priority to AU2003270499A priority Critical patent/AU2003270499A1/en
Publication of WO2004025975A2 publication Critical patent/WO2004025975A2/en
Publication of WO2004025975A3 publication Critical patent/WO2004025975A3/en
Priority to US11/075,983 priority patent/US7218933B2/en

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
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • 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
    • H04W36/00—Hand-off or reselection arrangements
    • H04W36/24—Reselection being triggered by specific parameters
    • H04W36/32—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data
    • H04W36/322—Reselection being triggered by specific parameters by location or mobility data, e.g. speed data by location data
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Disclosed is a cellular network handoff decision mechanism which comprising the steps of: determining a sampling interval using a carrier wavelength (figure 7, S710); determining a local averaging interval that is larger than the sampling interval; determining a handoff decision interval that is larger than the local averaging interval; selecting at least two base stations from a multitude of base stations having a pilot signal from a reference cellular network using a selection criterion (S720); determining a received signal strength from the pilot signal strength for each of the selected base stations once during every sampling interval (S730); calculating a local average signal strength value using each of the received signal strengths once during every local averaging interval (S740); determining an assignment region in which the local average signal strength value lies using a hysteresis range (S750); and calculating a handoff decision once during every handoff decision interval using a handoff calculation (S760).
PCT/US2003/028353 2002-09-11 2003-09-11 Cellular network handoff decision mechanism WO2004025975A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
AU2003270499A AU2003270499A1 (en) 2002-09-11 2003-09-11 Cellular network handoff decision mechanism
US11/075,983 US7218933B2 (en) 2002-09-11 2005-03-10 Cellular network handoff decision mechanism

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US40957402P 2002-09-11 2002-09-11
US60/409,574 2002-09-11
US41344802P 2002-09-26 2002-09-26
US60/413,448 2002-09-26

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US11/075,983 Continuation US7218933B2 (en) 2002-09-11 2005-03-10 Cellular network handoff decision mechanism

Publications (2)

Publication Number Publication Date
WO2004025975A2 WO2004025975A2 (en) 2004-03-25
WO2004025975A3 true WO2004025975A3 (en) 2004-06-10

Family

ID=31997831

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/028353 WO2004025975A2 (en) 2002-09-11 2003-09-11 Cellular network handoff decision mechanism

Country Status (3)

Country Link
US (1) US7218933B2 (en)
AU (1) AU2003270499A1 (en)
WO (1) WO2004025975A2 (en)

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US8160020B2 (en) 2001-06-25 2012-04-17 Airvana Network Solutions, Inc. Radio network control
US8195187B2 (en) 2001-06-25 2012-06-05 Airvana Network Solutions, Inc. Radio network control
US7016673B2 (en) * 2002-10-01 2006-03-21 Interdigital Technology Corporation Wireless communication method and system with controlled WTRU peer-to-peer communications
TWI269551B (en) * 2004-07-02 2006-12-21 Groundhog Technologies Taiwan Method for detecting and reducing ping-pong handover effect of cellular network
US7821997B2 (en) 2005-03-15 2010-10-26 Nokia Corporation Computer implemented method, system, and intergrated circuitry for determining a characteristic of a received signal to have fallen beneth a threshold
US8099504B2 (en) 2005-06-24 2012-01-17 Airvana Network Solutions, Inc. Preserving sessions in a wireless network
US20060291420A1 (en) * 2005-06-27 2006-12-28 Dennis Ng Network-initiated dormant handoffs
US7751835B2 (en) 2005-10-04 2010-07-06 Airvana, Inc. Non-circular paging areas
US8619702B2 (en) 2005-12-16 2013-12-31 Ericsson Evdo Inc. Radio network control
US8094630B2 (en) * 2005-12-16 2012-01-10 Airvana Network Solutions, Inc. Radio frequency dragging prevention
US8145221B2 (en) 2005-12-16 2012-03-27 Airvana Network Solutions, Inc. Radio network communication
US8085696B2 (en) 2006-07-14 2011-12-27 Airvana Networks Solutions, Inc. Dynamic modification of route update protocols
US20080232326A1 (en) * 2007-03-19 2008-09-25 Bengt Lindoff Method and Apparatus for Reducing Interference in Wireless Communication Networks by Enabling More Opportune Handover
US8843638B2 (en) 2007-12-13 2014-09-23 Ericsson Evdo Inc. Handing off active connections
US8711768B2 (en) * 2008-01-16 2014-04-29 Qualcomm Incorporated Serving base station selection based on backhaul capability
US8055256B2 (en) * 2008-05-30 2011-11-08 Motorola Mobility, Inc. Method and apparatus for selecting scanning rates in a multi-mode communication device
US9521565B2 (en) * 2008-11-17 2016-12-13 Qualcomm Incorporated Declaring radio link failure based on target-specific threshold
US9155014B2 (en) 2008-11-17 2015-10-06 Qualcomm Incorporated Conditional access terminal initiation of delayed handover
CN102647766B (en) * 2011-02-21 2014-07-16 鼎桥通信技术有限公司 Method and device for migrating user in high-speed rail communication network
CN103178927B (en) * 2011-12-22 2016-05-18 中国电信股份有限公司 Select to activate the method and apparatus of pilot signal
WO2015168911A1 (en) * 2014-05-08 2015-11-12 华为技术有限公司 Apparatus and method for controlling soft switch proportion

Citations (4)

* Cited by examiner, † Cited by third party
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US5995836A (en) * 1997-12-24 1999-11-30 Telefonaktiebolaget Lm Ericsson Method and system for variable handoff hysteresis in a radiocommunication system
US6049715A (en) * 1994-06-01 2000-04-11 Nortel Networks Corporation Method and apparatus for evaluating a received signal in a wireless communication utilizing long and short term values
US6320855B1 (en) * 1999-09-09 2001-11-20 Qualcom Incorporated Method and system for initiating idle handoff in a wireless communications system
US20020082012A1 (en) * 2000-12-22 2002-06-27 Shu-Shaw Wang Apparatus, and associated method, for adaptively selecting a handoff threshold in a radio communication system

Family Cites Families (8)

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US5940452A (en) * 1995-11-29 1999-08-17 Motorola, Inc. Dual mode radio subscriber unit having a diversity receiver apparatus and method therefor
US5940761A (en) * 1997-01-15 1999-08-17 Qaulcomm Incorporated Method and apparatus for performing mobile assisted hard handoff between communication systems
US5999816A (en) * 1997-02-18 1999-12-07 Qualcomm Incorporated Method and apparatus for performing mobile assisted hard handoff between communication systems
US6307849B1 (en) * 1997-09-08 2001-10-23 Qualcomm Incorporated Method and system for changing forward traffic channel power allocation during soft handoff
KR100258222B1 (en) * 1997-11-29 2000-06-01 서평원 A handoff guard channel setting method of base station
JP3967472B2 (en) * 1998-09-07 2007-08-29 富士通株式会社 CDMA receiver
US6240291B1 (en) * 1999-09-09 2001-05-29 The Board Of Trustees Of The Leland Stamford Junior University Method for handoff in wireless communication systems using pattern recognition
US7006841B2 (en) * 2000-12-20 2006-02-28 Lucent Technologies Inc Method to control base station transmit power drift during soft handoffs

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6049715A (en) * 1994-06-01 2000-04-11 Nortel Networks Corporation Method and apparatus for evaluating a received signal in a wireless communication utilizing long and short term values
US5995836A (en) * 1997-12-24 1999-11-30 Telefonaktiebolaget Lm Ericsson Method and system for variable handoff hysteresis in a radiocommunication system
US6320855B1 (en) * 1999-09-09 2001-11-20 Qualcom Incorporated Method and system for initiating idle handoff in a wireless communications system
US20020082012A1 (en) * 2000-12-22 2002-06-27 Shu-Shaw Wang Apparatus, and associated method, for adaptively selecting a handoff threshold in a radio communication system

Also Published As

Publication number Publication date
US7218933B2 (en) 2007-05-15
US20050181795A1 (en) 2005-08-18
WO2004025975A2 (en) 2004-03-25
AU2003270499A1 (en) 2004-04-30

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