WO2008116027A3 - Handover mechanism that exploits uplink channel quality of a target cell - Google Patents

Handover mechanism that exploits uplink channel quality of a target cell Download PDF

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Publication number
WO2008116027A3
WO2008116027A3 PCT/US2008/057560 US2008057560W WO2008116027A3 WO 2008116027 A3 WO2008116027 A3 WO 2008116027A3 US 2008057560 W US2008057560 W US 2008057560W WO 2008116027 A3 WO2008116027 A3 WO 2008116027A3
Authority
WO
WIPO (PCT)
Prior art keywords
channel quality
handover
handoff
target cell
uplink channel
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.)
Ceased
Application number
PCT/US2008/057560
Other languages
French (fr)
Other versions
WO2008116027A2 (en
Inventor
Rashid Ahmed Akbar Attar
Aleksandar Damnjanovic
Durga Prasad Malladi
Francesco Grilli
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Qualcomm Inc
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
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority to ES08732504.9T priority Critical patent/ES2644493T3/en
Priority to EP08732504.9A priority patent/EP2140707B1/en
Priority to EP17183805.5A priority patent/EP3255926B1/en
Priority to KR1020097021751A priority patent/KR101205932B1/en
Priority to CN2008800088547A priority patent/CN101641986B/en
Priority to JP2010501091A priority patent/JP5453240B2/en
Publication of WO2008116027A2 publication Critical patent/WO2008116027A2/en
Publication of WO2008116027A3 publication Critical patent/WO2008116027A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • H04W36/00837—Determination of triggering parameters for hand-off
    • H04W36/008375—Determination of triggering parameters for hand-off based on historical 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
    • H04W36/302—Reselection being triggered by specific parameters by measured or perceived connection quality data due to low signal strength

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

Abstract

System(s) and method(s) are provided for handover of a mobile terminal in a wireless communication system. Handoff resolution relies on both a downlink channel quality indication between a serving base station and the mobile terminal, and uplink channel quality indications amongst the terminal and a measurement set of target base stations. To generate UL channel quality indicators, the mobile station conveys a narrowband or broadband sounding reference signal, and serving and target base stations measure UL and DL performance metrics (e.g., RSRP, RSSI, or RSOT). In backward handover, UL channel state information from target cells is received at the serving base station through backhaul communication, and handoff is resolved based on both UL and DL quality reports. In forward handover, the set of UL quality reports are conveyed to the mobile station to determine a target cell for handoff.
PCT/US2008/057560 2007-03-19 2008-03-19 Handover mechanism that exploits uplink channel quality of a target cell Ceased WO2008116027A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
ES08732504.9T ES2644493T3 (en) 2007-03-19 2008-03-19 A handover mechanism that exploits an uplink channel quality of a target cell
EP08732504.9A EP2140707B1 (en) 2007-03-19 2008-03-19 Handover mechanism that exploits uplink channel quality of a target cell
EP17183805.5A EP3255926B1 (en) 2007-03-19 2008-03-19 Handover mechanism that exploits uplink channel quality of a target cell
KR1020097021751A KR101205932B1 (en) 2007-03-19 2008-03-19 Handover mechanism that exploits uplink channel quality of a target cell
CN2008800088547A CN101641986B (en) 2007-03-19 2008-03-19 Handover mechanism utilizing the uplink channel quality of the target cell
JP2010501091A JP5453240B2 (en) 2007-03-19 2008-03-19 Handover mechanism that utilizes the uplink channel quality of the target cell

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
US89558507P 2007-03-19 2007-03-19
US60/895,585 2007-03-19
US94096707P 2007-05-30 2007-05-30
US60/940,967 2007-05-30
US12/049,867 2008-03-17
US12/049,867 US8891489B2 (en) 2007-03-19 2008-03-17 Handover mechanism that exploits uplink channel quality of a target cell

Publications (2)

Publication Number Publication Date
WO2008116027A2 WO2008116027A2 (en) 2008-09-25
WO2008116027A3 true WO2008116027A3 (en) 2008-12-24

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/057560 Ceased WO2008116027A2 (en) 2007-03-19 2008-03-19 Handover mechanism that exploits uplink channel quality of a target cell

Country Status (9)

Country Link
US (2) US8891489B2 (en)
EP (2) EP2140707B1 (en)
JP (1) JP5453240B2 (en)
KR (1) KR101205932B1 (en)
CN (1) CN101641986B (en)
ES (2) ES2644493T3 (en)
HU (2) HUE034314T2 (en)
TW (1) TW200901794A (en)
WO (1) WO2008116027A2 (en)

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