CA2263060C - System and method for measuring channel quality information in a communication system - Google Patents

System and method for measuring channel quality information in a communication system Download PDF

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Publication number
CA2263060C
CA2263060C CA002263060A CA2263060A CA2263060C CA 2263060 C CA2263060 C CA 2263060C CA 002263060 A CA002263060 A CA 002263060A CA 2263060 A CA2263060 A CA 2263060A CA 2263060 C CA2263060 C CA 2263060C
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CA
Canada
Prior art keywords
metric
signal
plus noise
interference plus
value
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.)
Expired - Fee Related
Application number
CA002263060A
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English (en)
French (fr)
Other versions
CA2263060A1 (en
Inventor
Krishna Balachandran
Richard Paul Ejzak
Srinivas R. Kadaba
Sanjiv Nanda
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Nokia of America Corp
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Lucent Technologies 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 Lucent Technologies Inc filed Critical Lucent Technologies Inc
Publication of CA2263060A1 publication Critical patent/CA2263060A1/en
Application granted granted Critical
Publication of CA2263060C publication Critical patent/CA2263060C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0015—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the adaptation strategy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0002—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate
    • H04L1/0003—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission rate by switching between different modulation schemes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0009—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the channel coding
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0026—Transmission of channel quality indication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0045—Arrangements at the receiver end
    • H04L1/0054—Maximum-likelihood or sequential decoding, e.g. Viterbi, Fano, ZJ algorithms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056—Systems characterized by the type of code used
    • H04L1/0059—Convolutional codes
    • H04L1/006—Trellis-coded modulation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/20—Arrangements for detecting or preventing errors in the information received using signal quality detector
    • 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
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/54—Allocation or scheduling criteria for wireless resources based on quality criteria
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • 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
CA002263060A 1998-03-19 1999-02-26 System and method for measuring channel quality information in a communication system Expired - Fee Related CA2263060C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US09/044,636 US6215827B1 (en) 1997-08-25 1998-03-19 System and method for measuring channel quality information in a communication system
US09/044,636 1998-03-19

Publications (2)

Publication Number Publication Date
CA2263060A1 CA2263060A1 (en) 1999-09-19
CA2263060C true CA2263060C (en) 2003-12-09

Family

ID=21933461

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002263060A Expired - Fee Related CA2263060C (en) 1998-03-19 1999-02-26 System and method for measuring channel quality information in a communication system

Country Status (8)

Country Link
US (1) US6215827B1 (US06215827-20010410-M00020.png)
EP (1) EP0944201A3 (US06215827-20010410-M00020.png)
JP (1) JP3798175B2 (US06215827-20010410-M00020.png)
KR (1) KR100336231B1 (US06215827-20010410-M00020.png)
CN (1) CN1154391C (US06215827-20010410-M00020.png)
AU (1) AU2121799A (US06215827-20010410-M00020.png)
BR (1) BR9915302A (US06215827-20010410-M00020.png)
CA (1) CA2263060C (US06215827-20010410-M00020.png)

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Also Published As

Publication number Publication date
CN1154391C (zh) 2004-06-16
US6215827B1 (en) 2001-04-10
EP0944201A2 (en) 1999-09-22
KR19990077950A (ko) 1999-10-25
KR100336231B1 (ko) 2002-05-09
CN1237074A (zh) 1999-12-01
JP3798175B2 (ja) 2006-07-19
CA2263060A1 (en) 1999-09-19
BR9915302A (pt) 2001-07-24
JPH11313040A (ja) 1999-11-09
AU2121799A (en) 1999-09-30
EP0944201A3 (en) 2002-03-06

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