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1. WO2022009151 - SHARED CSI-RS FOR PARTIAL-RECIPROCITY BASED CSI FEEDBACK

Publication Number WO/2022/009151
Publication Date 13.01.2022
International Application No. PCT/IB2021/056155
International Filing Date 08.07.2021
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
CPC
H04B 7/0619
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
H04L 25/0226
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
25Baseband systems
02Details
0202Channel estimation
0224using sounding signals
0226sounding signals per se
H04L 5/005
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0048Allocation of pilot signals, i.e. of signals known to the receiver
005of common pilots, i.e. pilots destined for multiple users or terminals
H04L 5/0053
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
003Arrangements for allocating sub-channels of the transmission path
0053Allocation of signaling, i.e. of overhead other than pilot signals
Applicants
  • TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) [SE]/[SE]
Inventors
  • ATHLEY, Fredrik
  • ZHANG, Xinlin
  • MURUGANATHAN, Siva
  • GAO, Shiwei
  • FRENNE, Mattias
  • MÄÄTTANEN, Helka-Liina
Agents
  • WEISBERG, Alan M.
Priority Data
63/050,56710.07.2020US
Publication Language English (en)
Filing Language English (EN)
Designated States
Title
(EN) SHARED CSI-RS FOR PARTIAL-RECIPROCITY BASED CSI FEEDBACK
(FR) CSI-RS PARTAGÉ POUR RETOUR DE CSI BASÉ SUR UNE RÉCIPROCITÉ PARTIELLE
Abstract
(EN) A method, system and apparatus are disclosed for shared channel state information reference signal (CSI-RS) for partial-reciprocity based CSI feedback. In one embodiment, a user equipment (UE) is configured to use a CSI-RS resource, the CSI-RS resource being a cell-common CSI-RS resource and the CSI-RS resource comprising a plurality of CSI-RS ports; receive (i) a frequency domain, FD, indication indicating a set of FD components associated with the CSI-RS resource and/or (ii) a port indication indicating a set of CSI-RS ports associated with the CSI-RS resource; optionally, determine a subset in the set of FD components and/or in the set of CSI-RS ports that is indicated to the UE; and transmit a CSI report that is based at least in part on the CSI-RS resource and optionally based on at least one of the FD indication, the port indication and/or the determined subset.
(FR) La présente divulgation concerne un procédé, un système et un appareil destinés à un signal de référence d'informations d'état de canal (CSI-RS) partagé pour retour de CSI basé sur une réciprocité partielle. Dans un mode de réalisation, un équipement utilisateur (UE) est configuré pour utiliser une ressource de CSI-RS, la ressource de CSI-RS étant une ressource de CSI-RS commune aux cellules et la ressource de CSI-RS comprenant une pluralité de ports de CSI-RS ; recevoir (i) une indication de domaine fréquentiel, FD, indiquant un ensemble de composants FD associés à la ressource de CSI-RS et/ou (ii) une indication de port indiquant un ensemble de ports de CSI-RS associés à la ressource de CSI-RS ; éventuellement, déterminer un sous-ensemble dans l'ensemble de composants FD et/ou dans l'ensemble de ports de CSI-RS qui est indiqué à l'UE ; et transmettre un rapport de CSI qui est basé au moins en partie sur la ressource de CSI-RS et, éventuellement, basé sur l'indication FD et/ou l'indication de port et/ou le sous-ensemble déterminé.
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