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1. WO2020115523 - TWO-DIMENSIONAL SUBSPACE TRACKING AND BEAMFORMING FOR ACTIVE ANTENNA SYSTEMS

Publication Number WO/2020/115523
Publication Date 11.06.2020
International Application No. PCT/IB2018/059583
International Filing Date 03.12.2018
IPC
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
H04B 7/08 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
08at the receiving station
CPC
H04B 7/0617
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
0617for beam forming
H04B 7/0695
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
0686Hybrid systems, i.e. switching and simultaneous transmission
0695using beam selection
H04B 7/086
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
08at the receiving station
0837using pre-detection combining
0842Weighted combining
086using weights depending on external parameters, e.g. direction of arrival [DOA], predetermined weights or beamforming
H04B 7/088
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
08at the receiving station
0868Hybrid systems, i.e. switching and combining
088using beam selection
H04B 7/0897
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
08at the receiving station
0891Space-time diversity
0897using beamforming per multi-path, e.g. to cope with different directions of arrival [DOA] at different multi-paths
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • EL-KEYI, Amr
  • BERGMAN, Svante
Agents
  • WEISBERG, Alan M.
Priority Data
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TWO-DIMENSIONAL SUBSPACE TRACKING AND BEAMFORMING FOR ACTIVE ANTENNA SYSTEMS
(FR) SUIVI DE SOUS-ESPACE BIDIMENSIONNEL ET FORMATION DE FAISCEAUX POUR SYSTÈMES D'ANTENNE ACTIVE
Abstract
(EN)
According to one aspect of the disclosure, a network node is provided. The network node includes processing circuitry configured to: obtain measurement information, separately track a first direction and a second direction of a signal subspace of a covariance matrix of a channel based at least in part on the obtained measurement information where the first direction being different from the second direction, and optionally perform at least one Multiple Input Multiple Output, MIMO, related operation based on the separate tracking of the first direction and the second direction of the signal subspace of the covariance matrix of the channel.
(FR)
Un aspect de l'invention concerne un nœud de réseau. Le nœud de réseau comprend des circuits de traitement configurés pour : obtenir des informations de mesure ; suivre séparément une première direction et une seconde direction d'un sous-espace de signal d'une matrice de covariance d'un canal au moins en partie sur la base des informations de mesure obtenues, la première direction étant différente de la seconde ; et exécuter, facultativement, au moins une opération associée à entrées multiples et sorties multiples, MIMO, sur la base du suivi séparé de la première direction et de la seconde direction du sous-espace de signal de la matrice de covariance du canal.
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