CA2377060A1 - Method and apparatus for determining a reverse link transmission rate in a wireless communication system - Google Patents

Method and apparatus for determining a reverse link transmission rate in a wireless communication system Download PDF

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Publication number
CA2377060A1
CA2377060A1 CA002377060A CA2377060A CA2377060A1 CA 2377060 A1 CA2377060 A1 CA 2377060A1 CA 002377060 A CA002377060 A CA 002377060A CA 2377060 A CA2377060 A CA 2377060A CA 2377060 A1 CA2377060 A1 CA 2377060A1
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CA
Canada
Prior art keywords
reverse link
base station
transmission rate
accordance
determining
Prior art date
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Granted
Application number
CA002377060A
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French (fr)
Other versions
CA2377060C (en
Inventor
Paul E. Bender
Matthew Stuart Grob
Gadi Karmi
Roberto Padovani
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Qualcomm Inc
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Individual
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Application filed by Individual filed Critical Individual
Publication of CA2377060A1 publication Critical patent/CA2377060A1/en
Application granted granted Critical
Publication of CA2377060C publication Critical patent/CA2377060C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/18—Negotiating wireless communication parameters
    • H04W28/22—Negotiating communication rate
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/24—Radio transmission systems, i.e. using radiation field for communication between two or more posts
    • H04B7/26—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile
    • H04B7/2628—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA]
    • H04B7/264—Radio transmission systems, i.e. using radiation field for communication between two or more posts at least one of which is mobile using code-division multiple access [CDMA] or spread spectrum multiple access [SSMA] for data rate control
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
    • H04W52/04—TPC
    • H04W52/38—TPC being performed in particular situations
    • H04W52/40—TPC being performed in particular situations during macro-diversity or soft handoff

Abstract

Reverse link busy bits are independently generated by each base station (102, 104 and 106) and indicative of whether the transmitting base station (102, 104 and 106) has reached a reserve link capacity limit. In a first exemplary embodiment, the remote station (122) combines the multipath components of the reverse link busy bits from each of the transmitting base stations (102, 104 and 106) in its Active Set and in response transmits a reverse link signal only when all of the reverse link busy bits indicate that the base stations (102, 104 and 106) in the remote stations Active Set have reverse link capacity. In a first alternative embodiment, the remote station weights, the reverse link busy signals in accordance with the signal strength of the base station (102, 104 or 106) transmitting the busy signal and determines whether to transmit based on the weighted sum of the busy signals.

Claims (6)

1. In a communication system in which each base station in communication with a remote station transmits a reverse link busy bit indicating whether its reverse link capacity has been exhausted, a method of determining the reverse link transmission rate of said remote station comprising the steps of:
determining a reverse link transmission rate in accordance with a combined reverse link busy signal generated in accordance with reverse link busy bits transmitted by each of said base stations; and transmitting said reverse link data in accordance with said reverse link transmission rate.
2. The method of Claim 1 further comprising the step of soft combining multipath components of the reverse link busy bits from each of said base stations to provide said estimate of the reverse link busy bit transmitted by each of said base stations.
3. The method of Claim 1 wherein said step of determining said reverse link transmission rate, comprises inhibiting the transmission of said reverse link data when any of said reverse link busy bits indicate the base station is in a reverse link capacity condition.
4. The method of Claim 1 wherein said step of determining said reverse link transmission rate is performed in accordance with the values of the reverse link busy bits transmitted by each base station and the strength of the forward link signals from each base station as received by said remote station.
5. The method of Claim 1 wherein said step of determining said reverse link transmission rate, comprises the steps of:
computing a derating metric in accordance with the values of the reverse link busy bits transmitted by each base station and the strength of the forward link signals from each base station as received by said remote station; and adjusting a rate transmission profile indicative of the probability of successful transmission for each potential reverse link transmission rate in accordance with said derating metric; and selecting said reverse link transmission rate in accordance with said adjusted rate transmission profile.
6. The method of Claim 5 wherein said step of computing said derating metric (DM) is performed in accordance with the equation:
where SNR I is the estimated signal to noise ratio of the ith base station, Max SNR I is the maximum signal to noise ratio of the base stations in the Active Set of remote station i, RLB i is the value of the reverse link busy bit for the ith base station in the Active set which takes a value of 0 or 1.
CA2377060A 1999-07-02 2000-06-30 Method and apparatus for determining a reverse link transmission rate in a wireless communication system Expired - Lifetime CA2377060C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US09/346,882 1999-07-02
US09/346,882 US6556549B1 (en) 1999-07-02 1999-07-02 Method and apparatus for signal combining in a high data rate communication system
PCT/US2000/018322 WO2001003357A1 (en) 1999-07-02 2000-06-30 Method and apparatus for determining a reverse link transmission rate in a wireless communication system

Publications (2)

Publication Number Publication Date
CA2377060A1 true CA2377060A1 (en) 2001-01-11
CA2377060C CA2377060C (en) 2010-08-10

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2377060A Expired - Lifetime CA2377060C (en) 1999-07-02 2000-06-30 Method and apparatus for determining a reverse link transmission rate in a wireless communication system

Country Status (22)

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US (4) US6556549B1 (en)
EP (3) EP1192749B1 (en)
JP (2) JP4685302B2 (en)
KR (1) KR100753376B1 (en)
CN (2) CN100367694C (en)
AT (2) ATE359631T1 (en)
AU (1) AU5911500A (en)
BR (1) BRPI0011966B1 (en)
CA (1) CA2377060C (en)
CY (1) CY1107056T1 (en)
DE (2) DE60034338T2 (en)
DK (1) DK1192749T3 (en)
ES (2) ES2325182T3 (en)
HK (2) HK1075767A1 (en)
IL (3) IL147019A0 (en)
MX (1) MXPA01012708A (en)
NO (1) NO333454B1 (en)
PT (1) PT1192749E (en)
RU (1) RU2262212C2 (en)
TW (1) TWI226163B (en)
UA (1) UA73737C2 (en)
WO (1) WO2001003357A1 (en)

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Publication number Publication date
WO2001003357A1 (en) 2001-01-11
KR20020026482A (en) 2002-04-10
US20030076795A1 (en) 2003-04-24
EP2077638A3 (en) 2011-11-16
HK1109821A1 (en) 2008-06-20
IL189208A0 (en) 2008-06-05
US6807161B2 (en) 2004-10-19
JP2011091816A (en) 2011-05-06
US6804210B2 (en) 2004-10-12
BRPI0011966B1 (en) 2016-06-14
CN100367694C (en) 2008-02-06
US6680926B2 (en) 2004-01-20
CA2377060C (en) 2010-08-10
EP2077638A2 (en) 2009-07-08
PT1192749E (en) 2007-05-31
HK1075767A1 (en) 2005-12-23
EP1192749A1 (en) 2002-04-03
IL147019A (en) 2008-04-13
UA73737C2 (en) 2005-09-15
CN101188476B (en) 2015-11-25
ATE430420T1 (en) 2009-05-15
AU5911500A (en) 2001-01-22
NO20016409D0 (en) 2001-12-28
NO20016409L (en) 2002-01-24
EP1192749B1 (en) 2007-04-11
CN1630996A (en) 2005-06-22
US6556549B1 (en) 2003-04-29
DE60034338T2 (en) 2008-01-03
DE60034338D1 (en) 2007-05-24
JP4886065B2 (en) 2012-02-29
DK1192749T3 (en) 2007-08-20
ES2275524T3 (en) 2007-06-16
JP4685302B2 (en) 2011-05-18
EP1791286A1 (en) 2007-05-30
KR100753376B1 (en) 2007-08-30
ES2325182T3 (en) 2009-08-27
ATE359631T1 (en) 2007-05-15
EP1791286B1 (en) 2009-04-29
IL147019A0 (en) 2002-08-14
JP2003521847A (en) 2003-07-15
US20030112774A1 (en) 2003-06-19
NO333454B1 (en) 2013-06-10
RU2262212C2 (en) 2005-10-10
TWI226163B (en) 2005-01-01
MXPA01012708A (en) 2002-07-22
DE60042136D1 (en) 2009-06-10
CY1107056T1 (en) 2012-10-24
BR0011966A (en) 2002-12-17
CN101188476A (en) 2008-05-28
US20030072287A1 (en) 2003-04-17

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