IN2014CN03940A - - Google Patents

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Publication number
IN2014CN03940A
IN2014CN03940A IN3940CHN2014A IN2014CN03940A IN 2014CN03940 A IN2014CN03940 A IN 2014CN03940A IN 3940CHN2014 A IN3940CHN2014 A IN 3940CHN2014A IN 2014CN03940 A IN2014CN03940 A IN 2014CN03940A
Authority
IN
India
Prior art keywords
csi
enodeb
communication system
state information
receiving
Prior art date
Application number
Inventor
Chaitanya Rao
Kevin Lin
Satha Sathananthan
Phong Nguyen
Original Assignee
Nec Corp
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 AU2011904521A external-priority patent/AU2011904521A0/en
Application filed by Nec Corp filed Critical Nec Corp
Publication of IN2014CN03940A publication Critical patent/IN2014CN03940A/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/10—Monitoring; Testing of transmitters
    • H04B17/101—Monitoring; Testing of transmitters for measurement of specific parameters of the transmitter or components thereof
    • H04B17/102—Power radiated at antenna
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0204—Channel estimation of multiple channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L25/00—Baseband systems
    • H04L25/02—Details ; arrangements for supplying electrical power along data transmission lines
    • H04L25/0202—Channel estimation
    • H04L25/0224—Channel estimation using sounding signals
    • H04L25/0228—Channel estimation using sounding signals with direct estimation from sounding signals
    • 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
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space
    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • 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
    • H04L5/0057—Physical resource allocation for CQI
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/02—Arrangements for optimising operational condition
    • 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
    • H04B7/06—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
    • H04B7/0647—Variable feedback rate
    • 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
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment

Abstract

A method of measuring Channel State Information (CSI) in a multiple input/multiple output (MIMO) communication system including at least one base station (eNodeB) and at least one User Equipment (UE) the method including: receiving a Channel State Information Reference Signal (CSI RS) carried in a sub frame of a radio frame of the communication system at the at least one UE from the at least one eNodeB over at least one downlink channel therebetween; extracting CSI RS Resource Elements (RE) from the CSI RS sub frame; and using the extracted CSI RS REs to perform downlink channel estimations for active pairs of receiving and transmitting antennas of the UE and the eNodeB respectively to derive the CSI.
IN3940CHN2014 2011-10-31 2012-09-19 IN2014CN03940A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AU2011904521A AU2011904521A0 (en) 2011-10-31 Apparatus and method for CSI calculation and reporting
PCT/JP2012/074603 WO2013065422A1 (en) 2011-10-31 2012-09-19 Apparatus and method for csi calculation and reporting

Publications (1)

Publication Number Publication Date
IN2014CN03940A true IN2014CN03940A (en) 2015-09-04

Family

ID=48191780

Family Applications (1)

Application Number Title Priority Date Filing Date
IN3940CHN2014 IN2014CN03940A (en) 2011-10-31 2012-09-19

Country Status (6)

Country Link
US (1) US20140301232A1 (en)
EP (1) EP2774449A4 (en)
JP (1) JP2014534651A (en)
CN (1) CN103959891A (en)
IN (1) IN2014CN03940A (en)
WO (1) WO2013065422A1 (en)

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Publication number Priority date Publication date Assignee Title
US10034283B2 (en) * 2013-08-23 2018-07-24 Qualcomm Incorporated CSI and ACK reporting enhancements in LTE/LTE-A with unlicensed spectrum
JP6550629B2 (en) * 2014-03-20 2019-07-31 シャープ株式会社 Mobile station apparatus, base station apparatus, and communication method
WO2015147524A1 (en) * 2014-03-25 2015-10-01 한국전자통신연구원 Terminal, base station, and operation method thereof in distributed antenna system
WO2015147593A1 (en) * 2014-03-28 2015-10-01 엘지전자 주식회사 Method and apparatus for transmitting channel state information in wireless access system supporting machine type communication
DE102015209441A1 (en) * 2014-05-23 2015-12-10 Samsung Electronics Co., Ltd. Scheme for transmitting a reference signal in a wireless communication system
KR20150135058A (en) * 2014-05-23 2015-12-02 삼성전자주식회사 Method and apparatus for interference cancellation
CN105790819B (en) * 2014-12-25 2023-05-19 锐迪科（重庆）微电子科技有限公司 MIMO signal receiving method and device
CN105991267B (en) * 2015-02-06 2019-08-06 电信科学技术研究院 A kind of channel measuring method and device
US10404348B2 (en) * 2015-04-08 2019-09-03 Lg Electronics Inc. Method for reporting channel state and apparatus therefor
US20160359718A1 (en) * 2015-06-05 2016-12-08 Litepoint Corporation Method for calibrating an over-the-air (ota) test system for testing multiple radio frequency (rf) data packet signal transceivers
US10425181B2 (en) 2015-11-05 2019-09-24 Nec Corporation Method and system for data communication in an advanced wireless network
CN107181514B (en) * 2016-03-11 2020-09-15 电信科学技术研究院 CSI feedback method, precoding method and device
WO2019216642A1 (en) * 2018-05-09 2019-11-14 엘지전자 주식회사 Method for transmitting or receiving channel state information in wireless communication system and device therefor

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8130855B2 (en) * 2004-11-12 2012-03-06 Interdigital Technology Corporation Method and apparatus for combining space-frequency block coding, spatial multiplexing and beamforming in a MIMO-OFDM system
US8934395B2 (en) * 2008-10-24 2015-01-13 Qualcomm Incorporated Method and apparatus for uplink network MIMO in a wireless communication system
JP2011004212A (en) * 2009-06-19 2011-01-06 Sharp Corp Transmission apparatus, reception apparatus, communication system, and communication method
US8923143B2 (en) * 2009-06-29 2014-12-30 Qualcomm Incorporated Open loop channel reporting in a wireless communication system
WO2011019168A2 (en) * 2009-08-13 2011-02-17 Samsung Electronics Co., Ltd. Method and apparatus for transmitting reference signals in communication systems
WO2011052220A1 (en) * 2009-10-30 2011-05-05 パナソニック株式会社 Wireless transmission device and reference signal transmission method
US8824384B2 (en) * 2009-12-14 2014-09-02 Samsung Electronics Co., Ltd. Systems and methods for transmitting channel quality information in wireless communication systems
US20120113961A1 (en) * 2010-11-08 2012-05-10 Motorola Mobility, Inc. Interference Measurements in Enhanced Inter-Cell Interference Coordination Capable Wireless Terminals

Also Published As

Publication number Publication date
CN103959891A (en) 2014-07-30
JP2014534651A (en) 2014-12-18
EP2774449A4 (en) 2015-06-17
US20140301232A1 (en) 2014-10-09
EP2774449A1 (en) 2014-09-10
WO2013065422A1 (en) 2013-05-10

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