BR112019002821A2 - dispositivo sem fio e método para dispositivo sem fio para transmitir uma indicação de um pré-codificador - Google Patents

dispositivo sem fio e método para dispositivo sem fio para transmitir uma indicação de um pré-codificador

Info

Publication number
BR112019002821A2
BR112019002821A2 BR112019002821A BR112019002821A BR112019002821A2 BR 112019002821 A2 BR112019002821 A2 BR 112019002821A2 BR 112019002821 A BR112019002821 A BR 112019002821A BR 112019002821 A BR112019002821 A BR 112019002821A BR 112019002821 A2 BR112019002821 A2 BR 112019002821A2
Authority
BR
Brazil
Prior art keywords
wireless device
precoder
indication
integer
phase
Prior art date
Application number
BR112019002821A
Other languages
English (en)
Inventor
Mark Harrison Robert
Faxér Sebastian
Gao Shiwei
Muruganathan Siva
Grant Stephen
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR112019002821A2 publication Critical patent/BR112019002821A2/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
    • H04B7/0413—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
    • H04B7/063—Parameters other than those covered in groups H04B7/0623 - H04B7/0634, e.g. channel matrix rank or transmit mode 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
    • H04B7/0639—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
    • H04B7/0658—Feedback reduction
    • H04B7/066—Combined feedback for a number of channels, e.g. over several subcarriers like in orthogonal frequency division multiplexing [OFDM]

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Aerials With Secondary Devices (AREA)
  • Optical Communication System (AREA)
  • Radio Transmission System (AREA)

Abstract

um método, dispositivo sem fio e nó de rede para determinar uma indicação de um pré-codificador é fornecido. de acordo com um aspecto, um método em um dispositivo sem fio inclui a determinação e a indicação do pré-codificador a partir de um livro-código, sendo que a indicação compreende um primeiro parâmetro de fase de feixe e um segundo parâmetro de fase de feixe correspondentes a um primeiro feixe e a um segundo feixe respectivamente. o primeiro parâmetro de fase de feixe assume um dentre um primeiro número inteiro de valores de fase e o segundo parâmetro de fase de feixe assume um dentre um segundo número inteiro de valores de fase. pelo menos uma das condições a seguir se aplicam: o segundo número inteiro de valores de fase é menor que o primeiro número de valores de fase, e a segunda granularidade de frequência é maior que a primeira granularidade de frequência. o método inclui transmitir a indicação determinada de um pré-codificador ao nó de rede. de acordo com outro aspecto, o segundo feixe tem menos potência que o primeiro feixe e o segundo número inteiro de valores de fase é menor que o primeiro número inteiro de valores de fase.
BR112019002821A 2016-08-12 2017-08-11 dispositivo sem fio e método para dispositivo sem fio para transmitir uma indicação de um pré-codificador BR112019002821A2 (pt)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US201662374564P 2016-08-12 2016-08-12
PCT/IB2017/054911 WO2018029645A2 (en) 2016-08-12 2017-08-11 Multi-beam codebooks with further optimized overhead

Publications (1)

Publication Number Publication Date
BR112019002821A2 true BR112019002821A2 (pt) 2019-07-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
BR112019002821A BR112019002821A2 (pt) 2016-08-12 2017-08-11 dispositivo sem fio e método para dispositivo sem fio para transmitir uma indicação de um pré-codificador

Country Status (14)

Country Link
US (3) US10484059B2 (pt)
EP (3) EP4187804A1 (pt)
JP (4) JP6920416B2 (pt)
KR (2) KR102247005B1 (pt)
CN (1) CN109845126B (pt)
BR (1) BR112019002821A2 (pt)
CO (1) CO2019001252A2 (pt)
DK (1) DK3754863T3 (pt)
ES (2) ES2841781T3 (pt)
FI (1) FI3754863T3 (pt)
PL (1) PL3754863T3 (pt)
PT (1) PT3754863T (pt)
RU (2) RU2765573C2 (pt)
WO (1) WO2018029645A2 (pt)

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