BR112018070175A2 - método e aparelho de feedback do indicador de matriz de pré-codificação - Google Patents

método e aparelho de feedback do indicador de matriz de pré-codificação

Info

Publication number
BR112018070175A2
BR112018070175A2 BR112018070175A BR112018070175A BR112018070175A2 BR 112018070175 A2 BR112018070175 A2 BR 112018070175A2 BR 112018070175 A BR112018070175 A BR 112018070175A BR 112018070175 A BR112018070175 A BR 112018070175A BR 112018070175 A2 BR112018070175 A2 BR 112018070175A2
Authority
BR
Brazil
Prior art keywords
precoding matrix
matrix indicator
feedback
determining
stage
Prior art date
Application number
BR112018070175A
Other languages
English (en)
Inventor
Liu Jianqin
Zhang Ruiqi
Original Assignee
Huawei Tech Co Ltd
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 Huawei Tech Co Ltd filed Critical Huawei Tech Co Ltd
Publication of BR112018070175A2 publication Critical patent/BR112018070175A2/pt

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
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0478—Special codebook structures directed to feedback optimisation
    • 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
    • H04B7/0413—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
    • H04B7/0413—MIMO systems
    • H04B7/0456—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
    • H04B7/0486—Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting taking channel rank 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
    • H04B7/0636—Feedback format
    • H04B7/0645—Variable 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
    • 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
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W84/00—Network topologies
    • H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
    • H04W84/04—Large scale networks; Deep hierarchical networks
    • H04W84/042—Public Land Mobile systems, e.g. cellular systems

Landscapes

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

Abstract

é fornecido um método de feedback de indicador de matriz de pré-codificação, um método de recepção de indicador de matriz de pré-codificação e um dispositivo terminal. o método de feedback inclui: determinar uma indicação de classificação (101), determinar uma matriz de pré-codificação em um conjunto de matrizes de pré-codificação correspondente à indicação de classificação (102), determinar um primeiro indicador de matriz de pré-codificação, um segundo indicador de matriz de pré-codificação e um terceiro indicador de matriz de pré-codificação que são usados para indicar a matriz de pré-codificação (103) e enviar, pelo ue, uma classificação, o primeiro indicador de matriz de pré-codificação, o segundo indicador de matriz de pré-codificação e o terceiro indicador de matriz de pré-codificação para uma estação base (104). uma quantidade de vetores a serem selecionados é bastante reduzida usando o feedback de primeiro estágio e o feedback de segundo estágio, reduzindo assim a complexidade do cálculo do feedback de terceiro estágio e reduzindo uma quantidade de bits no feedback do terceiro estágio. uma quantidade de bits para realimentação de um indicador de matriz de pré-codificação é reduzida enquanto um requisito de desempenho do sistema é satisfeito, desse modo equilibrando o desempenho do sistema e as sobrecargas de feedback de um dispositivo terminal.
BR112018070175A 2016-04-01 2016-04-01 método e aparelho de feedback do indicador de matriz de pré-codificação BR112018070175A2 (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2016/078298 WO2017166281A1 (zh) 2016-04-01 2016-04-01 一种预编码矩阵指示的反馈方法及装置

Publications (1)

Publication Number Publication Date
BR112018070175A2 true BR112018070175A2 (pt) 2019-01-29

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BR112018070175A BR112018070175A2 (pt) 2016-04-01 2016-04-01 método e aparelho de feedback do indicador de matriz de pré-codificação

Country Status (8)

Country Link
US (3) US10419090B2 (pt)
EP (1) EP3435574A4 (pt)
JP (1) JP6750926B2 (pt)
KR (1) KR102150316B1 (pt)
CN (3) CN109951220B (pt)
BR (1) BR112018070175A2 (pt)
CA (1) CA3019607C (pt)
WO (1) WO2017166281A1 (pt)

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EP3576312A1 (en) * 2018-05-30 2019-12-04 FRAUNHOFER-GESELLSCHAFT zur Förderung der angewandten Forschung e.V. Doppler-delay codebook-based precoding and csi reporting for wireless communications systems
US10469146B1 (en) * 2018-09-28 2019-11-05 Qualcomm Incorporated Reducing hypothesis search for multi-panel precoder selection
CN115225125A (zh) * 2018-10-27 2022-10-21 华为技术有限公司 指示和确定预编码向量的方法以及通信装置
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Publication number Publication date
CN110034797A (zh) 2019-07-19
CN110034797B (zh) 2020-06-26
US10419090B2 (en) 2019-09-17
CN109075904B (zh) 2020-10-16
US10897291B2 (en) 2021-01-19
JP6750926B2 (ja) 2020-09-02
US20190036580A1 (en) 2019-01-31
CA3019607C (en) 2021-01-12
CN109951220B (zh) 2020-03-10
JP2019511883A (ja) 2019-04-25
EP3435574A4 (en) 2019-05-01
CA3019607A1 (en) 2017-10-05
KR20180128041A (ko) 2018-11-30
US20190149206A1 (en) 2019-05-16
US10454546B2 (en) 2019-10-22
WO2017166281A1 (zh) 2017-10-05
CN109075904A (zh) 2018-12-21
EP3435574A1 (en) 2019-01-30
KR102150316B1 (ko) 2020-09-01
CN109951220A (zh) 2019-06-28
US20200028554A1 (en) 2020-01-23

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