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1. WO2020142794 - METHODS AND APPARATUS FOR CHANNEL ESTIMATION AND PRECODING WITH INCOMPLETE CHANNEL OBSERVATION AND CHANNEL STATE INFORMATION FEEDBACK

Publication Number WO/2020/142794
Publication Date 09.07.2020
International Application No. PCT/US2020/032373
International Filing Date 11.05.2020
IPC
H04B 7/06 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna systems, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
H04L 25/02 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
H04L 25/03 2006.1
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
CPC
H04B 7/0626
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
7Radio transmission systems, i.e. using radiation field
02Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
04using two or more spaced independent antennas
06at the transmitting station
0613using simultaneous transmission
0615of weighted versions of same signal
0619using feedback from receiving side
0621Feedback content
0626Channel coefficients, e.g. channel state information [CSI]
H04L 25/0204
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
0202Channel estimation
0204of multiple channels
H04L 25/021
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
0202Channel estimation
021Estimation of channel covariance
H04L 25/0224
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
0202Channel estimation
0224using sounding signals
H04L 25/0242
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
0202Channel estimation
024channel estimation algorithms
0242using matrix methods
H04L 25/03343
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
03Shaping networks in transmitter or receiver, e.g. adaptive shaping networks
03006Arrangements for removing intersymbol interference
03343Arrangements at the transmitter end
Applicants
  • FUTUREWEI TECHNOLOGIES, INC. [US]/[US]
Inventors
  • YUE, Guosen
  • QI, Xiao-Feng
Agents
  • WIEBUSCH, Landon E.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHODS AND APPARATUS FOR CHANNEL ESTIMATION AND PRECODING WITH INCOMPLETE CHANNEL OBSERVATION AND CHANNEL STATE INFORMATION FEEDBACK
(FR) PROCÉDÉS ET APPAREIL POUR L'ESTIMATION ET LE PRÉCODAGE DE CANAL SUR LA BASE D'UNE RÉTROACTION D'INFORMATIONS D'ÉTAT DE CANAL ET D'UNE OBSERVATION DE CANAL INCOMPLÈTE
Abstract
(EN)
A method implemented by a node includes estimating first downlink (DL) channel information of first DL channels in accordance with reference signals received on first uplink (UL) channels, the first UL channels being a subset of available UL channels, and the first DL channels corresponding to the first UL channels; receiving channel feedback for a set of DL channels; estimating second DL channel information in accordance with the estimated first DL channel information and the received channel feedback; and communicating in accordance with the second DL channel information.
(FR)
Un procédé mis en oeuvre par un noeud consiste à estimer des premières informations de canal de liaison descendante (DL) de premiers canaux DL en fonction de signaux de référence reçus sur des premiers canaux de liaison montante (UL), les premiers canaux UL étant un sous-ensemble de canaux UL disponibles, et les premiers canaux DL correspondant aux premiers canaux UL; recevoir une rétroaction de canal pour un ensemble de canaux DL; estimer des secondes informations de canal DL en fonction des premières informations de canal DL estimées et à la rétroaction de canal reçue; et communiquer en fonction des secondes informations de canal DL.
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