IN2015DN02516A - - Google Patents

Download PDF

Info

Publication number
IN2015DN02516A
IN2015DN02516A IN2516DEN2015A IN2015DN02516A IN 2015DN02516 A IN2015DN02516 A IN 2015DN02516A IN 2516DEN2015 A IN2516DEN2015 A IN 2516DEN2015A IN 2015DN02516 A IN2015DN02516 A IN 2015DN02516A
Authority
IN
India
Prior art keywords
feedback
beamforming
disclosed
methods
codebook
Prior art date
Application number
Inventor
Pengfei; Xia
Monisha; Ghosh
Hanqing; Lou
Robert L ; Olesen
Oghenekome; Oteri
Original Assignee
Nterdigital Patent Holdings 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 Nterdigital Patent Holdings Inc filed Critical Nterdigital Patent Holdings Inc
Publication of IN2015DN02516A publication Critical patent/IN2015DN02516A/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
    • H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
    • H04B1/40—Circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/20—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other
    • H04B3/23—Reducing echo effects or singing; Opening or closing transmitting path; Conditioning for transmission in one direction or the other using a replica of transmitted signal in the time domain, e.g. echo cancellers
    • 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
    • H04B7/0617—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 for beam forming
    • 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
    • H04B7/0628—Diversity capabilities
    • 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
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • 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
    • H04B7/0641—Differential feedback
    • 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
    • H04B7/0658—Feedback reduction
    • H04B7/066—Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing [OFDM]
    • 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
    • H04L1/007—Unequal error protection
    • 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
    • H04L1/0072—Error control for data other than payload data, e.g. control data
    • H04L1/0073—Special arrangements for feedback channel

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Radio Transmission System (AREA)
  • Quality & Reliability (AREA)

Abstract

Methods for WiFi beamforming feedback , and sounding (WiBEAM) are described. Codebook based beamforming feedback signaling and sounding mechanisms for use in wireless communications are disclosed. The methods described herein improve the feedback efficiency by using Givens rotation based decompositions and quantizing the resulting angles of the Givens rotation based decompositions using a range from a subset of [0, 2ᴫ]. Feedback may also be divided into multiple components to improve feedback efficiency/accuracy. Time domain beamforming reports for taking advantage of channel reciprocity while still taking into account practical radio frequency (RF) channel impairments are also described. Beamforming feedback that prioritizes the feedback bits in accordance with the significance of the bits is also disclosed. A preamble structure to enable the use of smoothing methods for improved channel estimation , codebook designs that may be used for codebook based beamforming feedback , and multi- resolution explicit feedback are disclosed as well.
IN2516DEN2015 2012-09-28 2013-09-27 IN2015DN02516A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US201261707452P 2012-09-28 2012-09-28
US201361770879P 2013-02-28 2013-02-28
US201361783918P 2013-03-14 2013-03-14
PCT/US2013/062382 WO2014052879A1 (en) 2012-09-28 2013-09-27 Method for wifi beamforming, feedback, and sounding (wibeam)

Publications (1)

Publication Number Publication Date
IN2015DN02516A true IN2015DN02516A (en) 2015-09-11

Family

ID=49385373

Family Applications (1)

Application Number Title Priority Date Filing Date
IN2516DEN2015 IN2015DN02516A (en) 2012-09-28 2013-09-27

Country Status (11)

Country Link
US (2) US9680538B2 (en)
EP (2) EP4228166A1 (en)
JP (1) JP2016500942A (en)
KR (1) KR101718403B1 (en)
CN (1) CN104737465B (en)
HK (1) HK1213377A1 (en)
IL (1) IL237939B (en)
IN (1) IN2015DN02516A (en)
MY (1) MY178618A (en)
TW (1) TWI750107B (en)
WO (1) WO2014052879A1 (en)

Families Citing this family (109)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9137818B2 (en) * 2011-12-14 2015-09-15 Alcatel Lucent Method and system for a reduced-complexity scheduling for a network MIMO with linear zero-forcing beamforming
US9702963B2 (en) 2012-05-30 2017-07-11 Nokia Technologies Oy Method, apparatus, and computer program product for high accuracy location determination
US9755720B2 (en) * 2013-05-31 2017-09-05 Nokia Technologies Oy Calibration data
US9706415B2 (en) * 2013-10-31 2017-07-11 Aruba Networks, Inc. Method for RF management, frequency reuse and increasing overall system capacity using network-device-to-network-device channel estimation and standard beamforming techniques
GB2521442A (en) 2013-12-19 2015-06-24 Nokia Corp Method, apparatus, and computer program product for location determination using WiFi
WO2015102180A1 (en) * 2014-01-06 2015-07-09 엘지전자 주식회사 Method and apparatus for sounding in wireless communication system
US9526016B2 (en) 2014-02-14 2016-12-20 Samsung Electronics Co., Ltd. Computing system with feedback mechanism and method of operation thereof
US9124317B1 (en) * 2014-02-19 2015-09-01 Broadcom Corporation Supporting high dimensional MU-MIMO beamforming by sounding multiple frames with different sets of antenna patterns
US10225338B1 (en) 2014-04-15 2019-03-05 Marvell International Ltd. Peer to peer ranging exchange
EP3140921B1 (en) 2014-05-08 2019-12-25 Telefonaktiebolaget LM Ericsson (publ) Beam forming using an antenna arrangement
WO2015172098A1 (en) * 2014-05-09 2015-11-12 Interdigital Patent Holdings, Inc. Method and system for sounding and channel selection
US9693307B2 (en) * 2014-06-30 2017-06-27 Apple Inc. Early termination of reception of wireless transmissions
US10499418B2 (en) 2014-07-09 2019-12-03 Qualcomm Incorporated Methods and apparatus for multiple user uplink control and scheduling via aggregated frames
US10511358B2 (en) 2014-07-21 2019-12-17 Arris Enterprises Llc Beamforming for a multi-user MIMO group
JP6387178B2 (en) * 2014-08-08 2018-09-05 株式会社東芝 Wireless communication method and apparatus
CN105471771B (en) * 2014-08-28 2021-01-12 北京三星通信技术研究有限公司 Method and device for acquiring channel direction information
US9602635B2 (en) * 2014-10-27 2017-03-21 Intel IP Corporation Wireless device, method, and computer readable media for compressed media access control header
EP3228041B8 (en) 2014-12-05 2020-03-11 NXP USA, Inc. Trigger frame format for orthogonal frequency division multiple access (ofdma) communication
US10063292B2 (en) * 2015-02-02 2018-08-28 Qualcomm Incorporated Multi-user operation management
US10082557B1 (en) 2015-02-11 2018-09-25 Marvell International Ltd. Methods and apparatus for frame filtering in snoop-based range measurements
US10505595B2 (en) * 2015-02-27 2019-12-10 Newracom, Inc. Mixed fine/coarse sounding methods for HE STAs for MIMO and OFDMA
US9998130B2 (en) * 2016-07-06 2018-06-12 Hrl Laboratories, Llc Method to perform convolutions between arbitrary vectors using clusters of weakly coupled oscillators
US9820326B2 (en) 2015-04-02 2017-11-14 Qualcomm Incorporated Techniques for assisting radio access technology (RAT) communications using another RAT
US9820325B2 (en) * 2015-04-02 2017-11-14 Qualcomm Incorporated Techniques for assisting radio access technology (RAT) communications using another RAT
US9814088B2 (en) * 2015-04-02 2017-11-07 Qualcomm Incorporated Techniques for assisting radio access technology (RAT) communications using another RAT
EP3281484B1 (en) 2015-04-09 2021-03-24 NXP USA, Inc. Contention-based orthogonal frequency division multiple access (ofdma) communication
WO2016161624A1 (en) * 2015-04-10 2016-10-13 华为技术有限公司 Data transmission method and device
US10341014B2 (en) * 2015-04-15 2019-07-02 RF DSP Inc. Hybrid beamforming multi-antenna wireless systems
US10256880B2 (en) 2015-07-01 2019-04-09 Lg Electronics Inc. Codebook configuration method in multi-antenna wireless communication system and device for same
EP3806379A1 (en) 2015-07-08 2021-04-14 Apple Inc. User equipment (ue) and methods for communication using directional transmission and reception
US9860765B2 (en) 2015-09-01 2018-01-02 Qualcomm Incorporated Doppler profile estimation using compressed beamforming information
US10305584B2 (en) * 2015-10-20 2019-05-28 Samsung Electronics Co., Ltd. Apparatus and method for performing beamforming operation in communication system supporting frequency division-multiple input multiple output scheme
JP6745488B2 (en) * 2015-11-04 2020-08-26 パナソニックＩｐマネジメント株式会社 Wireless communication device and wireless communication method
US10686641B2 (en) * 2015-11-05 2020-06-16 Mediatek Inc. Signaling and feedback schemes of time-vary channels in high-efficiency WLAN
WO2017078591A1 (en) * 2015-11-06 2017-05-11 Telefonaktiebolaget Lm Ericsson (Publ) Positioning in wlan systems
US10171265B2 (en) * 2015-11-10 2019-01-01 Qualcomm Incorporated Uplink channel information
US10742285B1 (en) * 2015-11-13 2020-08-11 Marvell International Ltd. Explicit multiuser beamforming training in a wireless local area network
EP3382966B1 (en) * 2015-11-25 2020-12-30 LG Electronics Inc. Method and device for transmitting feedback frame in wireless lan system
US10123331B2 (en) * 2015-12-15 2018-11-06 Lg Electronics Inc. Method and apparatus for transmitting feedback frame in wireless local area network system
US9887749B2 (en) * 2015-12-16 2018-02-06 Huawei Technologies Co., Ltd. System and method for quantization of angles for beamforming feedback
US10419093B2 (en) * 2016-01-08 2019-09-17 Telefonaktiebolaget Lm Ericsson (Publ) Enabling channel state feedback for multi-user transmission in a wireless communication system
EP3403336B1 (en) 2016-01-21 2020-08-19 Huawei Technologies Co., Ltd. Communication device and methods thereof
CN107027145B (en) * 2016-02-01 2021-01-01 华为技术有限公司 Channel measurement method and device
EP3223446A1 (en) * 2016-03-22 2017-09-27 Xieon Networks S.à r.l. A method for protecting a link in an optical network
WO2017166089A1 (en) 2016-03-30 2017-10-05 Intel Corporation Techniques for determining a current location of a mobile device
BR112019001617B1 (en) * 2016-08-01 2023-12-26 Telefonaktiebolaget Lm Ericsson (Publ) FIRST COMMUNICATION NODE AND RELATED METHOD FOR DETERMINING THE POSITION OF A SECOND COMMUNICATION NODE, SECOND COMMUNICATION NODE AND RELATED METHOD FOR ENABLE THE POSITIONING OF THE SECOND COMMUNICATION NODE AND COMPUTER READABLE STORAGE MEDIUM
US10148346B1 (en) * 2016-08-04 2018-12-04 Sprint Spectrum L.P. Systems and methods for determining a frequency band for wireless backhaul
US20190199423A1 (en) * 2016-08-29 2019-06-27 Arris Enterprises Llc Efficient search through an antenna-pattern group
US11284282B2 (en) 2016-11-04 2022-03-22 Guangdong Oppo Mobile Telecommunications Corp., Ltd. Beam measurement method, terminal and network device
US10257012B2 (en) * 2016-12-13 2019-04-09 Samsung Electronics Co., Ltd Apparatus and method for coarse timing and frequency synchronization
CN106712815B (en) * 2017-01-18 2020-06-19 西安交通大学 CSI feedback overhead reduction method based on validity period check
CN110506434A (en) * 2017-02-03 2019-11-26 株式会社Ntt都科摩 User terminal and wireless communications method
US10567134B1 (en) * 2017-02-16 2020-02-18 Quantenna Communications, Inc. WiFi antenna selection with beamforming
US10673652B2 (en) * 2017-03-02 2020-06-02 Futurewei Technologies, Inc. System and method for providing explicit feedback in the uplink
CN108988925B (en) * 2017-05-05 2021-09-21 华为技术有限公司 Method and device for indicating antenna polarization direction in wireless network
EP3404843B1 (en) * 2017-05-17 2022-12-07 Mitsubishi Electric R&D Centre Europe B.V. Method for enabling both analog and digital beamforming
JP6586129B2 (en) * 2017-06-20 2019-10-02 アンリツ株式会社 MIMO system testing apparatus and testing method
WO2019005997A1 (en) * 2017-06-27 2019-01-03 Intel Corporation Methods and apparatus for securing sounding symbols
US10630357B2 (en) 2017-06-30 2020-04-21 Qualcomm Incorporated Wireless personal area network transmit beamforming
US10848288B2 (en) * 2017-08-08 2020-11-24 Nxp Usa, Inc. Multi-user null data packet (NDP) ranging
EP3609090B1 (en) * 2017-09-01 2021-06-16 LG Electronics Inc. Method for supporting beamforming in wireless lan system and apparatus therefor
WO2019050159A1 (en) 2017-09-08 2019-03-14 엘지전자 주식회사 Method for reporting channel state information in wireless communication system and apparatus therefor
US20190097709A1 (en) * 2017-09-22 2019-03-28 Qualcomm Incorporated Coherent beamforming feedback
US11683833B2 (en) * 2017-09-28 2023-06-20 Qualcomm Incorporated Spatial listen-before-talk (LBT) with channel variation consideration
EP3474459A1 (en) * 2017-10-18 2019-04-24 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Receiver, transmitter, system and method employing space-delay precoding
US10459076B2 (en) * 2017-11-15 2019-10-29 Cognitive Systems Corp. Motion detection based on beamforming dynamic information
CN109802712B (en) * 2017-11-17 2021-08-13 华为技术有限公司 User equipment, access equipment and precoding method
CN109873665B (en) * 2017-12-01 2021-09-14 华为技术有限公司 Method and device for data transmission
US11159207B2 (en) * 2018-01-10 2021-10-26 Mediatek Singapore Pte. Ltd. Null data packet sounding for preamble puncture techniques
KR102149425B1 (en) * 2018-02-09 2020-08-31 엘지전자 주식회사 Signal transmission/reception method in wireless LAN system and apparatus therefor
US10484063B1 (en) 2018-05-04 2019-11-19 At&T Intellectual Property I, L.P. Transmission of beamforming weight coefficients from digital baseband unit to remote radio unit
KR102517669B1 (en) 2018-06-27 2023-04-05 삼성전자주식회사 Method and apparatus for wireless communication
US11206554B2 (en) * 2018-08-06 2021-12-21 Qualcomm Incorporated Joint transmissions to a station
US10367568B1 (en) 2018-08-08 2019-07-30 At&T Intellectual Property I, L.P. Determining precoding coefficients for fronthaul links in a cloud radio access network
CN110535496B (en) * 2018-08-10 2022-05-03 中兴通讯股份有限公司 CSI processing and obtaining method, device, equipment, system and storage medium
KR102096031B1 (en) 2018-08-28 2020-04-01 고려대학교 산학협력단 Orthogonality-based data transmission method in uplink mu-mimo
EP4040687A1 (en) 2018-08-29 2022-08-10 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Receiver, transmitter, system and method employing space-delay precoding
US10998944B2 (en) * 2018-09-14 2021-05-04 Samsung Electronics Co., Ltd. System and method for applying smoothed beamforming
US10588089B1 (en) * 2018-09-21 2020-03-10 Qualcomm Incorporated Mitigation of calibration errors
US11349533B2 (en) * 2018-09-28 2022-05-31 Apple Inc. Dynamic antenna weight vector codebooks
US10840986B2 (en) * 2018-09-28 2020-11-17 Mediatek Inc. Enhanced type II channel state information in mobile communications
WO2020069459A1 (en) * 2018-09-28 2020-04-02 Nokia Technologies Oy Joint orthogonal compression and quantization for type ii channel state information feedback
US10833750B2 (en) * 2018-09-28 2020-11-10 Apple Inc. Codebook updates for a linear system using superposition
WO2020062017A1 (en) * 2018-09-28 2020-04-02 Qualcomm Incorporated Channel state information (csi) with spatial and time domain compression
US11101867B2 (en) 2018-10-09 2021-08-24 Mediatek Singapore Pte. Ltd. Reducing beamforming feedback size in WLAN communication
US11362776B2 (en) 2018-11-04 2022-06-14 Semiconductor Components Industries, Llc Early link detection based adaptive selection of receive parameters
KR102016112B1 (en) * 2019-01-15 2019-08-30 넥서스텍(주) Beamforming control device and its method for multiple relay communication
DE102019117402B3 (en) * 2019-03-15 2020-07-02 Samsung Electronics Co., Ltd. Device and method for a noniterative singular value decomposition
US10979122B2 (en) * 2019-03-21 2021-04-13 Samsung Electronics Co., Ltd. Wireless communication apparatus for adaptive beamforming and method of operation thereof
US10680693B1 (en) 2019-04-09 2020-06-09 Apple Inc. Radio frequency beamforming calibration systems and methods
KR102240425B1 (en) 2019-04-30 2021-04-15 중앙대학교 산학협력단 Method for interference-aware adaptive beam alignment for hyper-dense ieee 802.11ax internet-of-things networks and sta there of
WO2020231649A1 (en) * 2019-05-10 2020-11-19 Interdigital Patent Holdings, Inc. Efficient uplink resource requests in wlan systems
CN112748425A (en) * 2019-10-31 2021-05-04 华为技术有限公司 Sensing method and device
WO2021151855A1 (en) * 2020-01-31 2021-08-05 Nokia Technologies Oy Csi accuracy indicator reporting for mu-mimo broadcast channel
KR20210111915A (en) 2020-03-03 2021-09-14 삼성전자주식회사 Beam transmitting device and operating method for the same
US20230106272A1 (en) * 2020-03-19 2023-04-06 Nippon Telegraph And Telephone Corporation Wireless communication method and wireless communication system
US20230327838A1 (en) * 2020-06-30 2023-10-12 Telefonaktiebolaget Lm Ericsson (Publ) Method and apparatus for multicast communication
US11496338B2 (en) 2020-07-14 2022-11-08 Nxp Usa, Inc. Method and apparatus for beamforming
AU2021316062B2 (en) * 2020-07-31 2024-04-04 Cohere Technologies, Inc. Localization and auto-calibration in a wireless network
WO2022047646A1 (en) * 2020-09-02 2022-03-10 Huawei Technologies Co., Ltd. Devices for beamforming with extended codebook size
CN112104532B (en) * 2020-09-10 2022-01-25 中移（杭州）信息技术有限公司 Network connection method, network distribution device, electronic equipment and storage medium
CN116803015A (en) * 2021-02-25 2023-09-22 华为技术有限公司 DL measurement information signaling for improved DL transmission
US11888593B2 (en) 2021-07-21 2024-01-30 Qualcomm Incorporated Scaling and quantization for channel state information reporting
CN114363906B (en) * 2021-12-29 2024-04-16 鹏城实验室 Mass node access resource allocation method, device, terminal and storage medium
CN114444268B (en) * 2021-12-29 2024-07-23 中国船舶重工集团公司第七一五研究所 Wave group analysis-based underwater sediment layer multilayer medium acoustic reflection time domain response analysis and solution calculation method
WO2023147025A1 (en) * 2022-01-28 2023-08-03 Visa International Service Association System, method, and computer program product for energy efficient generation of artificial noise to prevent side-channel attacks
WO2023210999A1 (en) * 2022-04-27 2023-11-02 엘지전자 주식회사 Method for measuring downlink signal and device therefor
KR20240002262A (en) * 2022-06-28 2024-01-05 세종대학교산학협력단 Channel state information feedback method for reconfigurable intelligent surface-based massive MIMO systems
WO2024103045A1 (en) * 2022-11-10 2024-05-16 Maxlinear, Inc. Wireless lan uplink multi-user mimo transmission

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20010033622A1 (en) 2000-03-14 2001-10-25 Joengren George Robust utilization of feedback information in space-time coding
CN1841985A (en) * 2005-03-30 2006-10-04 松下电器产业株式会社 Limited feedback method for multi-antenna system
US7873016B2 (en) 2005-11-07 2011-01-18 Broadcom Corporation Method and system for utilizing tone grouping with givens rotations to reduce overhead associated with explicit feedback information
US8180314B2 (en) * 2006-03-08 2012-05-15 Broadcom Corporation Method and system for utilizing givens rotation to reduce feedback information overhead
US8345732B2 (en) * 2005-06-28 2013-01-01 Broadcom Corporation Feedback of channel information in a closed loop beamforming wireless communication system
US8107544B2 (en) * 2007-05-16 2012-01-31 Motorola Mobility, Inc. Method and apparatus for feedback in closed loop transmitting
CN101388699A (en) 2007-09-12 2009-03-18 夏普株式会社 Information feedback method and system based on space, time and frequency domain, customer equipment and base station
US8223808B2 (en) * 2008-02-05 2012-07-17 Texas Instruments Incorporated Data and control multiplexing in PUSCH in wireless networks
EP2151941A1 (en) * 2008-08-05 2010-02-10 Nokia Siemens Networks OY Communication network element and method transmitting data
US8737504B2 (en) * 2009-10-05 2014-05-27 Samsung Electronics Co., Ltd. Method and system for feedback of channel information
US8520576B2 (en) * 2010-08-04 2013-08-27 Broadcom Corporation Explicit feedback format within single user, multiple user, multiple access, and/or MIMO wireless communications
US8908600B2 (en) * 2010-10-26 2014-12-09 Qualcomm Incorporated Channel state information feedback frame format and feedback rules for very high throughput wireless systems

Also Published As

Publication number Publication date
CN104737465B (en) 2018-05-04
TWI750107B (en) 2021-12-21
US9979446B2 (en) 2018-05-22
EP4228166A1 (en) 2023-08-16
EP2901569B1 (en) 2023-03-08
KR20150058471A (en) 2015-05-28
TW201419786A (en) 2014-05-16
EP2901569A1 (en) 2015-08-05
IL237939B (en) 2019-03-31
US9680538B2 (en) 2017-06-13
JP2016500942A (en) 2016-01-14
US20170257153A1 (en) 2017-09-07
CN104737465A (en) 2015-06-24
KR101718403B1 (en) 2017-03-21
WO2014052879A1 (en) 2014-04-03
HK1213377A1 (en) 2016-06-30
US20140093005A1 (en) 2014-04-03
MY178618A (en) 2020-10-19

Similar Documents

Publication Publication Date Title
IN2015DN02516A (en)
IN2014DN09225A (en)
MY167480A (en) Method and device for sending and receiving data
BR112014007674A2 (en) method for producing 4,4-difluoro-3,4-dihydroisoquinoline derivatives
WO2012166977A3 (en) Methods and apparatus for improving nfc activation and data exchange reporting mechanisms
WO2015048247A3 (en) Discontinuous reception configuration
WO2013126706A3 (en) Coding of loop filter parameters using a codebook in video coding
WO2012016043A3 (en) Portable, wireless multi-channel impedance analyzer
IN2013MU01440A (en)
TW201613283A (en) Methods and apparatus for adaptive receiver mode selection during discontinuous reception
HK1171827A1 (en) Matching queries to data operations using query templates
WO2015038102A3 (en) Surface calibration of a wellbore resistivity logging tool
IN2014CN03138A (en)
IN2014MN02594A (en)
WO2015095485A3 (en) Flexible extended signaling
MY160952A (en) Hybrid antenna for portable communication devices
IN2014CN04574A (en)
MX351370B (en) Application of a discontinous reception (drx) cycle.
WO2011118962A3 (en) Apparatus and method for generating codebook in a wireless communication system
EP4401075A3 (en) Encoding method, decoding method, encoding apparatus, and decoding apparatus
MX2016003240A (en) Substituted berbines and their synthesis.
MX2016003462A (en) Process for preparing benzisothiazolinones.
GB201212505D0 (en) Radiofrequency circuit assembly
MX2016009806A (en) Method and device for reporting power headroom and user equipment.
WO2014132161A3 (en) Food cutting apparatus