CN113243135A - 获取下行信道信息的方法和装置 - Google Patents

获取下行信道信息的方法和装置 Download PDF

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Publication number
CN113243135A
CN113243135A CN201880100365.8A CN201880100365A CN113243135A CN 113243135 A CN113243135 A CN 113243135A CN 201880100365 A CN201880100365 A CN 201880100365A CN 113243135 A CN113243135 A CN 113243135A
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CN
China
Prior art keywords
terminal device
srs
downlink channel
reference signal
access network
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN201880100365.8A
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English (en)
Inventor
刘江华
苏立焱
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Filing date
Publication date
Application filed by Huawei Technologies Co Ltd filed Critical Huawei Technologies Co Ltd
Publication of CN113243135A publication Critical patent/CN113243135A/zh
Pending legal-status Critical Current

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    • 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
    • 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
    • H04B7/0619—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
    • 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
    • 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

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本申请提供了获取下行信道信息和装置。本申请实施例中，接入网设备根据从第一终端设备接收的第一参考信号，估计终端设备的第一上行信道状态信息，根据从终端设备接收的一组第二参考信号，估计终端设备的第二上行信道状态信息，由于该组第二参考信号是使用第一终端设备的下行信道信息预编码的，因此接入网设备可以根据估计到的第一上行信道状态信息和估计到的第二上行信道状态信息，确定终端设备反馈的下行信道信息。本申请实施例有别于一般反馈需要通过一定比特数对数值进行量化后的反馈，能够实现接入网设备和终端设备之间的标量/矢量无量化误差反馈，增强反馈下行信道信息的可靠性。

Description

PCT国内申请，说明书已公开。

Claims (22)

  1. PCT国内申请，权利要求书已公开。
CN201880100365.8A 2018-12-25 2018-12-25 获取下行信道信息的方法和装置 Pending CN113243135A (zh)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2018/123615 WO2020132892A1 (zh) 2018-12-25 2018-12-25 获取下行信道信息的方法和装置

Publications (1)

Publication Number Publication Date
CN113243135A true CN113243135A (zh) 2021-08-10

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN201880100365.8A Pending CN113243135A (zh) 2018-12-25 2018-12-25 获取下行信道信息的方法和装置

Country Status (4)

Country Link
US (1) US20210320771A1 (zh)
EP (1) EP3893579A4 (zh)
CN (1) CN113243135A (zh)
WO (1) WO2020132892A1 (zh)

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WO2023160656A1 (zh) * 2022-02-28 2023-08-31 华为技术有限公司 一种通信方法及装置
WO2024007335A1 (zh) * 2022-07-08 2024-01-11 Oppo广东移动通信有限公司 无线通信方法、装置、设备及存储介质

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CN110535512B (zh) * 2018-10-31 2023-06-30 中兴通讯股份有限公司 一种报告天线端口加权矢量的方法、装置和系统
US11894894B2 (en) * 2021-01-15 2024-02-06 Qualcomm Incorporated Network-indicated precoder sequence for uplink transmissions

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WO2018082672A1 (zh) * 2016-11-04 2018-05-11 华为技术有限公司 一种上行测量参考信号传输方法、装置和系统

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CN104255053B (zh) * 2013-04-03 2018-10-19 华为技术有限公司 接收和发送参考信号的方法及装置、用户设备和基站
CN105490787B (zh) * 2014-09-15 2019-06-14 中兴通讯股份有限公司 下行导频的发送方法、检测方法、装置及基站、终端
CN106301490B (zh) * 2015-05-15 2021-08-13 索尼公司 无线通信系统以及无线通信系统中的装置和方法
CN107210839B (zh) * 2015-09-11 2021-07-20 华为技术有限公司 一种控制信息发送、接收方法、用户设备及网络设备
CN108289330B (zh) * 2017-01-09 2022-12-02 中兴通讯股份有限公司 上行参考信号信息的指示方法及装置
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WO2018082672A1 (zh) * 2016-11-04 2018-05-11 华为技术有限公司 一种上行测量参考信号传输方法、装置和系统

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023160656A1 (zh) * 2022-02-28 2023-08-31 华为技术有限公司 一种通信方法及装置
WO2024007335A1 (zh) * 2022-07-08 2024-01-11 Oppo广东移动通信有限公司 无线通信方法、装置、设备及存储介质

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Publication number Publication date
EP3893579A4 (en) 2021-12-15
WO2020132892A1 (zh) 2020-07-02
EP3893579A1 (en) 2021-10-13
US20210320771A1 (en) 2021-10-14

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Application publication date: 20210810