IN2012DN02810A - - Google Patents

Info

Publication number
IN2012DN02810A
IN2012DN02810A IN2810DEN2012A IN2012DN02810A IN 2012DN02810 A IN2012DN02810 A IN 2012DN02810A IN 2810DEN2012 A IN2810DEN2012 A IN 2810DEN2012A IN 2012DN02810 A IN2012DN02810 A IN 2012DN02810A
Authority
IN
India
Prior art keywords
feedback signal
radio interface
part feedback
over
preceded
Prior art date
Application number
Inventor
George Jongren
Muhammad Imadur Rahman
Original Assignee
Ericsson Telefon Ab L M
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 US12/817,589 external-priority patent/US20110219925A1/en
Application filed by Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of IN2012DN02810A publication Critical patent/IN2012DN02810A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0417—Feedback systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/046—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account
    • H04B7/0469—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking physical layer constraints into account taking special antenna structures, e.g. cross polarized antennas into account
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0621—Feedback content
    • H04B7/0634—Antenna weights or vector/matrix coefficients
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0645—Variable feedback
    • H04B7/065—Variable contents, e.g. long-term or short-short
    • 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
    • H04L1/02—Arrangements for detecting or preventing errors in the information received by diversity reception
    • H04L1/06—Arrangements for detecting or preventing errors in the information received by diversity reception using space diversity
    • H04L1/0618—Space-time coding
    • H04L1/0675—Space-time coding characterised by the signaling
    • H04L1/0693—Partial feedback, e.g. partial channel state information [CSI]

Abstract

A communications system comprises a second device (30) and a first device (28). The first device (28) is of a type which receives, on a downlink over a radio interface from a second device, preceded information (29), In an example mode the first device (28) generates a multi- part feedback signal (22) which is configured to affect content of a precoder matrix (40) utilized by the second device (30). On an uplink over the radio interface to the second device, at least two different parts of the multi-part feedback signal are transmitted with two respective different transmission granularities in time and/or frequency.
IN2810DEN2012 2009-10-01 2010-09-30 IN2012DN02810A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US24758909P 2009-10-01 2009-10-01
US12/817,589 US20110219925A1 (en) 2009-06-17 2010-06-17 Fluid jet cutting assembly and method for cutting a hollow workpiece
PCT/IB2010/054424 WO2011039725A1 (en) 2009-10-01 2010-09-30 Multi-granular feedback reporting and feedback processing for precoding in telecommunications

Publications (1)

Publication Number Publication Date
IN2012DN02810A true IN2012DN02810A (en) 2015-07-24

Family

ID=43823159

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2810DEN2012 IN2012DN02810A (en) 2009-10-01 2010-09-30

Country Status (8)

Country Link
US (1) US9667378B2 (en)
EP (2) EP2942895B1 (en)
CN (2) CN105306121B (en)
IN (1) IN2012DN02810A (en)
NZ (1) NZ599191A (en)
RU (1) RU2565001C2 (en)
TW (1) TWI535236B (en)
WO (1) WO2011039725A1 (en)

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Also Published As

Publication number Publication date
CN105306121A (en) 2016-02-03
US9667378B2 (en) 2017-05-30
CN105306121B (en) 2019-05-21
CN102668434A (en) 2012-09-12
EP2494730B1 (en) 2018-04-25
US20110080969A1 (en) 2011-04-07
WO2011039725A1 (en) 2011-04-07
RU2565001C2 (en) 2015-10-10
NZ599191A (en) 2014-04-30
EP2494730A1 (en) 2012-09-05
EP2942895A1 (en) 2015-11-11
EP2942895B1 (en) 2019-11-06
RU2012117734A (en) 2013-11-20
TWI535236B (en) 2016-05-21
TW201141120A (en) 2011-11-16
CN102668434B (en) 2015-12-02

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