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1. WO2020068931 - REDUCING HYPOTHESIS SEARCH FOR MULTI-PANEL PRECODER SELECTION

Publication Number WO/2020/068931
Publication Date 02.04.2020
International Application No. PCT/US2019/052888
International Filing Date 25.09.2019
IPC
H04B 7/0456 2017.01
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
0413MIMO systems
0456Selection of precoding matrices or codebooks, e.g. using matrices for antenna weighting
H04B 7/06 2006.01
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
CPC
H04B 7/0456
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
0413MIMO systems
0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
H04B 7/046
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
0413MIMO systems
0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
046taking physical layer constraints into account
H04B 7/0486
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
0413MIMO systems
0456Selection of precoding matrices or codebooks, e.g. using matrices antenna weighting
0486taking channel rank into account
H04B 7/0632
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
0632Channel quality parameters, e.g. channel quality indicator [CQI]
H04B 7/0639
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
0636Feedback format
0639Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
H04W 72/0453
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. wireless traffic scheduling or selection or allocation of wireless resources
04Wireless resource allocation
044where an allocation plan is defined based on the type of the allocated resource
0453the resource being a frequency, carrier or frequency band
Applicants
  • QUALCOMM INCORPORATED [US]/[US]
Inventors
  • EKBATANI, Siavash
  • SHEN, Qiang
Agents
  • HANASZ, Joseph
Priority Data
16/146,91928.09.2018US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) REDUCING HYPOTHESIS SEARCH FOR MULTI-PANEL PRECODER SELECTION
(FR) RÉDUCTION DE RECHERCHE D'HYPOTHÈSES POUR SÉLECTION DE PRÉCODEUR MULTI-PANNEAU
Abstract
(EN)
Methods, systems, and devices for wireless communications are described. One example includes calculating one or more first channel capacities for each precoder hypothesis of a first subset of precoder hypotheses and selecting a first precoder hypothesis of the first subset of precoder hypotheses using the calculated first channel capacities. The example also includes selecting a second subset of precoder hypotheses based on the first precoder hypothesis, calculating one or more second channel capacities for each precoder hypothesis of the second subset of precoder hypotheses, and selecting a second precoder hypothesis of the second subset of precoder hypotheses using the calculated second channel capacities. The example also includes selecting grouping co-phase factors based at least in part on the first precoder hypothesis or the second precoder hypothesis and transmitting a first precoding matrix indicator that indicates a first precoder index based on the one or more grouping co-phase factors.
(FR)
L’invention concerne des procédés, des systèmes et des dispositifs pour les communications sans fil. Un exemple consiste à calculer une ou plusieurs premières capacités de canal pour chaque hypothèse de précodeur d'un premier sous-ensemble d'hypothèses de précodeur et à sélectionner une première hypothèse de précodeur du premier sous-ensemble d'hypothèses de précodeur à l'aide des premières capacités de canal calculées. L'exemple consiste également à sélectionner un second sous-ensemble d'hypothèses de précodeur sur la base de la première hypothèse de précodeur, à calculer une ou plusieurs secondes capacités de canal pour chaque hypothèse de précodeur du second sous-ensemble d'hypothèses de précodeur, et à sélectionner une seconde hypothèse de précodeur du second sous-ensemble d'hypothèses de précodeur à l'aide des secondes capacités de canal calculées. L'exemple comprend également la sélection de facteurs de co-phase de regroupement sur la base, au moins en partie, de la première hypothèse de précodeur ou de la seconde hypothèse de précodeur et la transmission d'un premier indicateur de matrice de précodage qui indique un premier indice de précodeur sur la base du ou des facteurs de co-phase de regroupement.
Also published as
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