WO2008103979A3 - Cqi feedback for ofdma systems - Google Patents

Cqi feedback for ofdma systems Download PDF

Info

Publication number
WO2008103979A3
WO2008103979A3 PCT/US2008/054859 US2008054859W WO2008103979A3 WO 2008103979 A3 WO2008103979 A3 WO 2008103979A3 US 2008054859 W US2008054859 W US 2008054859W WO 2008103979 A3 WO2008103979 A3 WO 2008103979A3
Authority
WO
WIPO (PCT)
Prior art keywords
cqi
module
sub
band
decoder
Prior art date
Application number
PCT/US2008/054859
Other languages
French (fr)
Other versions
WO2008103979A2 (en
Inventor
Badri Varadarajan
Eko N Onggosanusi
Runhua Chen
H Ii Kim
Original Assignee
Texas Instruments Inc
Badri Varadarajan
Eko N Onggosanusi
Runhua Chen
H Ii Kim
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
Priority claimed from US12/036,066 external-priority patent/US7961672B2/en
Application filed by Texas Instruments Inc, Badri Varadarajan, Eko N Onggosanusi, Runhua Chen, H Ii Kim filed Critical Texas Instruments Inc
Publication of WO2008103979A2 publication Critical patent/WO2008103979A2/en
Publication of WO2008103979A3 publication Critical patent/WO2008103979A3/en

Links

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
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0028—Formatting
    • H04L1/0029—Reduction of the amount of signalling, e.g. retention of useful signalling or differential signalling
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals

Abstract

Embodiments of a feedback generator (106) and decoder and methods of operating the feedback generator and decoder are presented. In one embodiment, the feedback generator includes a CQI compression module (107) configured to provide a compressed CQI for the user equipment corresponding to at least one sub-band, where a sub-band is composed of at least one resource block. The feedback generator also includes a transmit module (108) coupled to the CQI compression module and configured to transmit the compressed CQI to a serving base station (115). In one embodiment, the feedback decoder (120) includes a receive module (121) configured to receive a compressed CQI in the base station from user equipment corresponding to at least one sub-band. The feedback decoder also includes a CQI restoration module (122) coupled to the receive module and configured to provide a restored CQI from the compressed CQI for the at least one sub-band.
PCT/US2008/054859 2007-02-23 2008-02-25 Cqi feedback for ofdma systems WO2008103979A2 (en)

Applications Claiming Priority (16)

Application Number Priority Date Filing Date Title
US89132607P 2007-02-23 2007-02-23
US60/891,326 2007-02-23
US94321907P 2007-06-11 2007-06-11
US60/943,219 2007-06-11
US94836507P 2007-07-06 2007-07-06
US60/948,365 2007-07-06
US95391107P 2007-08-03 2007-08-03
US60/953,911 2007-08-03
US95580207P 2007-08-14 2007-08-14
US60/955,759 2007-08-14
US97146407P 2007-09-11 2007-09-11
US60/971,464 2007-09-11
US98104807P 2007-10-18 2007-10-18
US60/981,048 2007-10-18
US12/036,066 2008-02-22
US12/036,066 US7961672B2 (en) 2007-02-23 2008-02-22 CQI feedback for OFDMA systems

Publications (2)

Publication Number Publication Date
WO2008103979A2 WO2008103979A2 (en) 2008-08-28
WO2008103979A3 true WO2008103979A3 (en) 2008-11-27

Family

ID=72560283

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/054859 WO2008103979A2 (en) 2007-02-23 2008-02-25 Cqi feedback for ofdma systems

Country Status (1)

Country Link
WO (1) WO2008103979A2 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010027304A1 (en) * 2008-09-02 2010-03-11 Telefonaktiebolaget L M Ericsson (Publ) Frequency selective sinr regeneration
US20120329502A1 (en) * 2010-01-15 2012-12-27 Frank Frederiksen Feedback Signaling
CN102291216A (en) * 2010-06-17 2011-12-21 株式会社Ntt都科摩 User equipment and channel state information feedback method
EP2798896B1 (en) 2011-12-29 2018-10-17 Telecom Italia S.p.A. Scheduling algorithm for wireless communication networks
GB2509973A (en) * 2013-01-21 2014-07-23 Sony Corp Reporting channel state information in a wireless communications system
WO2019013404A1 (en) * 2017-07-11 2019-01-17 엘지전자 주식회사 Method and apparatus for feeding back cqi in wireless communication system

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6662339B1 (en) * 1999-12-15 2003-12-09 Agere Systems Inc. Error screening based on code and control information consistency in a communication system
US20060223449A1 (en) * 2005-04-01 2006-10-05 Qualcomm Incorporated Systems and methods for control channel signaling
US20060285485A1 (en) * 2005-06-16 2006-12-21 Avneesh Agrawal Quick paging channel with reduced probability of missed page

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6662339B1 (en) * 1999-12-15 2003-12-09 Agere Systems Inc. Error screening based on code and control information consistency in a communication system
US20060223449A1 (en) * 2005-04-01 2006-10-05 Qualcomm Incorporated Systems and methods for control channel signaling
US20060285485A1 (en) * 2005-06-16 2006-12-21 Avneesh Agrawal Quick paging channel with reduced probability of missed page

Also Published As

Publication number Publication date
WO2008103979A2 (en) 2008-08-28

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