AU2017264574B2 - Reference signals and link adaptation for massive MIMO - Google Patents

Reference signals and link adaptation for massive MIMO Download PDF

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Publication number
AU2017264574B2
AU2017264574B2 AU2017264574A AU2017264574A AU2017264574B2 AU 2017264574 B2 AU2017264574 B2 AU 2017264574B2 AU 2017264574 A AU2017264574 A AU 2017264574A AU 2017264574 A AU2017264574 A AU 2017264574A AU 2017264574 B2 AU2017264574 B2 AU 2017264574B2
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subframe
csi
srs
downlink
data
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AU2017264574A1 (en
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Tingfang Ji
Can Karakus
Joseph Binamira Soriaga
Pavan Kumar Vitthaladevuni
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Qualcomm Inc
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Qualcomm Inc
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    • 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
    • H04B7/0417—Feedback systems
    • H04B7/0421—Feedback systems utilizing implicit feedback, e.g. steered pilot signals
    • 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
    • H04B7/0452—Multi-user MIMO 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
    • 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
    • H04B7/0626—Channel coefficients, e.g. channel state information [CSI]
    • 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
    • H04B7/0686—Hybrid systems, i.e. switching and simultaneous transmission
    • H04B7/0691—Hybrid systems, i.e. switching and simultaneous transmission using subgroups of transmit antennas
    • 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
    • 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
    • H04L25/0226—Channel estimation using sounding signals sounding signals per se
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/02—Terminal devices
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
    • H04W88/08—Access point devices
    • 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
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0037—Inter-user or inter-terminal allocation

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Power Engineering (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
AU2017264574A 2016-05-09 2017-05-03 Reference signals and link adaptation for massive MIMO Active AU2017264574B2 (en)

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US201662333693P 2016-05-09 2016-05-09
US62/333,693 2016-05-09
US15/584,740 2017-05-02
US15/584,740 US10505597B2 (en) 2016-05-09 2017-05-02 Reference signals and link adaptation for massive MIMO
PCT/US2017/030793 WO2017196604A1 (en) 2016-05-09 2017-05-03 Reference signals and link adaptation for massive mimo

Publications (2)

Publication Number Publication Date
AU2017264574A1 AU2017264574A1 (en) 2018-10-25
AU2017264574B2 true AU2017264574B2 (en) 2022-01-27

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AU2017264574A Active AU2017264574B2 (en) 2016-05-09 2017-05-03 Reference signals and link adaptation for massive MIMO

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US (1) US10505597B2 (enExample)
EP (1) EP3455949B1 (enExample)
JP (1) JP6978432B2 (enExample)
CN (1) CN109075827B (enExample)
AU (1) AU2017264574B2 (enExample)
TW (1) TWI736617B (enExample)
WO (1) WO2017196604A1 (enExample)

Families Citing this family (44)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2016119174A1 (zh) * 2015-01-29 2016-08-04 华为技术有限公司 多载波聚合通信方法和设备
US10148346B1 (en) * 2016-08-04 2018-12-04 Sprint Spectrum L.P. Systems and methods for determining a frequency band for wireless backhaul
KR102551206B1 (ko) * 2016-09-07 2023-07-05 삼성전자주식회사 무선 통신 시스템에서 간섭 완화 장치 및 방법
US10736074B2 (en) 2017-07-31 2020-08-04 Qualcomm Incorporated Systems and methods to facilitate location determination by beamforming of a positioning reference signal
US10715229B2 (en) 2018-01-19 2020-07-14 At&T Intellectual Property I, L.P. Facilitating semi-open loop based transmission diversity for uplink transmissions for 5G or other next generation networks
US11923924B2 (en) * 2018-02-26 2024-03-05 Parallel Wireless, Inc. Miniature antenna array with polar combining architecture
CN112106317B (zh) * 2018-03-02 2023-09-15 索尼集团公司 用于波束管理的方法和终端
US11212051B2 (en) * 2018-03-06 2021-12-28 Qualcomm Incorporated Beam management for autonomous uplink with analog beams
CN111886916A (zh) * 2018-03-16 2020-11-03 瑞典爱立信有限公司 用于设备到设备通信的技术
US10715275B2 (en) 2018-05-11 2020-07-14 At&T Intellectual Property I, L.P. Configuring channel quality indicator for communication service categories in wireless communication systems
US10771139B2 (en) * 2018-06-01 2020-09-08 Samsung Electronics Co., Ltd Apparatus and method for providing efficient beamforming feedback
US10644771B2 (en) * 2018-06-08 2020-05-05 University Of South Florida Using artificial signals to maximize capacity and secrecy of multiple-input multiple-output (MIMO) communication
US10516452B1 (en) * 2018-06-08 2019-12-24 University Of South Florida Using artificial signals to maximize capacity and secrecy of multiple-input multiple-output (MIMO) communication
US10492212B1 (en) 2018-06-22 2019-11-26 At&T Intellectual Property I, L.P. Scheduling ultra-reliable low latency communications in wireless communication systems
US11159290B2 (en) * 2018-06-28 2021-10-26 Acer Incorporated Device and method for handling a sounding reference signal transmission
WO2020024081A1 (en) * 2018-07-28 2020-02-06 Qualcomm Incorporated Reference signal for remote interference management
CN110536430B (zh) * 2018-09-05 2023-04-07 中兴通讯股份有限公司 通信及资源配置方法、装置、基站、终端及存储介质
US10862615B2 (en) 2018-11-09 2020-12-08 Samsung Electronics Co., Ltd Modulation and coding scheme selection for massive multiple-input multiple-output (MIMO) systems with partial channel information
KR20210087089A (ko) 2018-11-27 2021-07-09 엑스콤 랩스 인코퍼레이티드 넌-코히어런트 협력 다중 입출력 통신
US11277174B2 (en) * 2019-01-09 2022-03-15 Qualcomm Incorporated Channel state feedback computation and beam training for full-duplex communication
CN113366787B (zh) * 2019-01-16 2023-06-23 上海诺基亚贝尔股份有限公司 用于估计信道状态信息的方法、设备和计算机可读介质
US12273286B2 (en) 2019-01-21 2025-04-08 Qualcomm Incorporated Bandwidth part operation and downlink or uplink positioning reference signal scheme
US11777764B2 (en) 2019-03-28 2023-10-03 Qualcomm Incorporated Sounding reference signal waveform design for wireless communications
CN113227819B (zh) * 2019-03-28 2025-05-02 华为技术有限公司 用于异步装置和无时间帧结构的装置处的信号检测的系统和方法
CN113728559A (zh) * 2019-04-18 2021-11-30 株式会社Ntt都科摩 用户终端以及无线通信方法
US11239967B2 (en) 2019-05-02 2022-02-01 Qualcomm Incorporated Patterns for reference signals used for positioning in a wireless communications system
US11381298B2 (en) * 2019-06-28 2022-07-05 Qualcomm Incorporated User equipment based beam measurement resource activation
US11716123B2 (en) 2019-10-09 2023-08-01 The Trustees Of Columbia University In The City Of New York Systems, methods, and media for recovering data symbols in multiple-input, multiple-output receivers
US12244417B2 (en) 2019-12-20 2025-03-04 Qualcomm Incorporated Link adaptation protocol in a wireless local area network (WLAN)
US20230122263A1 (en) * 2020-04-24 2023-04-20 Qualcomm Incorporated New csi report setting to hasten csi feedback for svd-based precoding
US12088378B2 (en) * 2020-09-18 2024-09-10 Qualcomm Incorporated Low overhead and high accuracy channel state feedback using neural networks
WO2022079188A1 (en) * 2020-10-16 2022-04-21 Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e.V. Iterative transmit refinement
KR102983818B1 (ko) * 2021-02-01 2026-06-26 삼성전자주식회사 간섭 백색화 동작을 수행하는 무선 통신 장치 및 이의 동작 방법
CN115119243B (zh) * 2021-03-17 2025-11-21 中国移动通信有限公司研究院 一种干扰上报方法、装置和存储介质
CN115550683B (zh) * 2021-06-29 2024-12-20 华为技术有限公司 一种视频数据的传输方法及装置
WO2023277744A1 (en) * 2021-06-30 2023-01-05 Telefonaktiebolaget Lm Ericsson (Publ) Channel modelling
US12438752B2 (en) * 2021-12-17 2025-10-07 Intel Corporation Methods and devices for joint processing in massive MIMO systems
WO2023131395A1 (en) * 2022-01-04 2023-07-13 Telefonaktiebolaget Lm Ericsson (Publ) Beamforming control for downlink limited access node
CN116545485B (zh) * 2022-01-26 2026-08-07 大唐移动通信设备有限公司 信号传输方法、装置及存储介质
EP4307624A1 (en) 2022-07-14 2024-01-17 Nokia Solutions and Networks Oy Whitening uplink data streams
EP4774929A1 (en) * 2023-09-04 2026-07-15 MediaTek Inc. Method and apparatus for channel information feedback with whitening information in mobile communications
US20250106690A1 (en) * 2023-09-25 2025-03-27 Huawei Technologies Canada Co., Ltd. Methods and system of collaborative link adaptation
WO2025151753A1 (en) * 2024-01-12 2025-07-17 John Mezzalingua Associates, LLC. Base station-centric determination of best beamforming parameters for over-the-air communications with a user device
WO2025212148A1 (en) * 2024-04-04 2025-10-09 Kyocera Corporation Methods, apparatuses and systems for sounding reference signal-based precoder for downlink data multiple-input multiple-output transmissions

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100255790A1 (en) * 2009-04-02 2010-10-07 Qualcomm Incorporated Beamforming options with partial channel knowledge
US20120287770A1 (en) * 2010-01-14 2012-11-15 Panasonic Corporation Wireless communication terminal apparatus, wireless communication base station apparatus and wireless communication method

Family Cites Families (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2008054235A (ja) 2006-08-28 2008-03-06 Matsushita Electric Ind Co Ltd 変調方式判定装置、受信装置、変調方式判定方法及び変調方式判定プログラム
US8699589B2 (en) 2009-07-06 2014-04-15 Futurewei Technologies, Inc. System and method for multi-cell joint codebook feedback in wireless communications systems
CA2789441C (en) * 2010-02-12 2016-12-13 Research In Motion Limited Reference signal for a coordinated multi-point network implementation
CN103650364A (zh) * 2011-07-01 2014-03-19 瑞典爱立信有限公司 具有相位补偿的波束形成
EP2856661A2 (en) * 2012-06-04 2015-04-08 Interdigital Patent Holdings, Inc. Communicating channel state information (csi) of multiple transmission points
EP3726769A1 (en) * 2012-07-02 2020-10-21 LG Electronics Inc. Method and device for reporting channel state information in wireless communication system
US9596065B2 (en) * 2012-10-24 2017-03-14 Qualcomm Incorporated Enhanced SRS transmission for MIMO operation in LTE-A
US9178583B2 (en) * 2013-01-08 2015-11-03 Samsung Electronics Co., Ltd. Channel state information feedback design in advanced wireless communication systems
US9300451B2 (en) * 2013-03-13 2016-03-29 Samsung Electronics Co., Ltd. Transmission of sounding reference signals for adaptively configured TDD communication systems
US10034283B2 (en) 2013-08-23 2018-07-24 Qualcomm Incorporated CSI and ACK reporting enhancements in LTE/LTE-A with unlicensed spectrum
CN104796220A (zh) * 2014-01-21 2015-07-22 株式会社Ntt都科摩 信道状态信息的反馈和交换方法及装置
CN104980247B (zh) * 2014-04-04 2019-11-22 北京三星通信技术研究有限公司 自适应调整调制编码方式和参考信号图样的方法、基站、终端和系统
US10084579B2 (en) 2014-11-17 2018-09-25 Samsung Electronics Co., Ltd. CSI feedback for MIMO wireless communication systems with polarized active antenna array
US10057019B2 (en) 2015-05-08 2018-08-21 Qualcomm Incorporated Media access control (MAC) layer coding and hybrid automatic repeat request (HARQ) for efficient receiver pipeline processing in self-contained time division duplex (TDD) subframe
US10931342B2 (en) 2015-08-13 2021-02-23 Samsung Electronics Co., Ltd. Reference signal measurement method and apparatus for use in mobile communication system
EP3337054A4 (en) * 2015-08-13 2018-08-01 Samsung Electronics Co., Ltd. Channel state information feedback method and apparatus
WO2017119741A1 (ko) * 2016-01-08 2017-07-13 엘지전자 주식회사 무선통신 시스템에서 단말이 기지국으로 부터 하향링크 신호를 수신하는 방법 및 이를 위한 장치
US10624156B2 (en) * 2016-01-15 2020-04-14 Apple Inc. 5G FDD low latency transmission subframe structure system and method of use
CN109314872B (zh) * 2016-03-28 2021-03-23 苹果公司 无线通信网络中的装置及计算机可读存储介质

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100255790A1 (en) * 2009-04-02 2010-10-07 Qualcomm Incorporated Beamforming options with partial channel knowledge
US20120287770A1 (en) * 2010-01-14 2012-11-15 Panasonic Corporation Wireless communication terminal apparatus, wireless communication base station apparatus and wireless communication method

Also Published As

Publication number Publication date
CN109075827A (zh) 2018-12-21
TW201743576A (zh) 2017-12-16
WO2017196604A1 (en) 2017-11-16
EP3455949B1 (en) 2022-12-21
CN109075827B (zh) 2021-05-25
AU2017264574A1 (en) 2018-10-25
CA3020227A1 (en) 2017-11-16
JP6978432B2 (ja) 2021-12-08
TWI736617B (zh) 2021-08-21
US20170324455A1 (en) 2017-11-09
EP3455949A1 (en) 2019-03-20
JP2019516324A (ja) 2019-06-13
US10505597B2 (en) 2019-12-10
BR112018072938A2 (pt) 2019-02-19

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