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1. WO2020222604 - METHOD FOR TRANSMITTING AND RECEIVING DEMODULATION REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR

Publication Number WO/2020/222604
Publication Date 05.11.2020
International Application No. PCT/KR2020/005868
International Filing Date 04.05.2020
IPC
H04L 5/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
5Arrangements affording multiple use of the transmission path
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 7/0408 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
0408using two or more beams, i.e. beam diversity
H04W 72/12 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
72Local resource management, e.g. selection or allocation of wireless resources or wireless traffic scheduling
12Wireless traffic scheduling
H04B 17/373
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
30of propagation channels
373Predicting channel quality parameters
H04L 1/00 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
1Arrangements for detecting or preventing errors in the information received
Applicants
  • 엘지전자 주식회사 LG ELECTRONICS INC. [KR]/[KR]
Inventors
  • 김규석 KIM, Kyuseok
  • 김형태 KIM, Hyungtae
  • 강지원 KANG, Jiwon
  • 이길봄 LEE, Kilbom
Agents
  • 특허법인 로얄 ROYAL PATENT & LAW OFFICE
Priority Data
10-2019-005187402.05.2019KR
10-2019-005530810.05.2019KR
10-2019-012343004.10.2019KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) METHOD FOR TRANSMITTING AND RECEIVING DEMODULATION REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM AND DEVICE THEREFOR
(FR) PROCÉDÉ D'ÉMISSION ET DE RÉCEPTION DE SIGNAL DE RÉFÉRENCE DE DÉMODULATION DANS UN SYSTÈME DE COMMUNICATIONS SANS FIL, ET DISPOSITIF CORRESPONDANT
(KO) 무선 통신 시스템에서 복조 참조 신호의 송수신 방법 및 이에 대한 장치
Abstract
(EN)
Disclosed are a method for transmitting and receiving a demodulation reference signal (DM-RS) in a wireless communication system and a device therefor. In detail, a method for receiving, by user equipment (UE), a DMRS in the wireless communication system comprises the steps of: receiving activation information; transmitting feedback information regarding the activation information; receiving downlink control information (DCI) comprising i) a transmission configuration indication (TCI) field and ii) an antenna port field; and receiving the DM-RS on the basis of the DCI, wherein the activation information comprises information associated with mapping of a code point and a TCI state of the TCI field, and, when the TCI field indicates a code point mapped to a plurality of TCI states and the antenna port field indicates antenna ports of a plurality of code division multiplexing (CDM) groups, a first TCI state of the plurality of TCI states can correspond to a CDM group associated with a first antenna port based on an indication order of the antenna ports.
(FR)
L'invention concerne un procédé d'émission et de réception d'un signal de référence de démodulation (DM-RS) dans un système de communication sans fil, et un dispositif associé. En détail, l'invention concerne un procédé de réception, par un équipement utilisateur (UE), d'un DMRS dans le système de communication sans fil comprenant les étapes consistant : à recevoir des informations d'activation; à transmettre des informations de retour concernant les informations d'activation; à recevoir des informations de commande de liaison descendante (DCI) comprenant i) un champ d'indication de configuration de transmission (TCI) et ii) un champ de port d'antenne; et à recevoir le DM-RS sur la base des DCI, les informations d'activation comprenant des informations associées à la mise en correspondance d'un point de code et d'un état TCI du champ TCI, et, lorsque le champ TCI indique un point de code mis en correspondance avec une pluralité d'états TCI et que le champ de port d'antenne indique des ports d'antenne d'une pluralité de groupes de multiplexage par répartition en code (CDM), un premier état TCI de la pluralité d'états TCI peut correspondre à un groupe CDM associé à un premier port d'antenne sur la base d'un ordre d'indication des ports d'antenne.
(KO)
본 발명에서는 무선 통신 시스템에서 복조 참조 신호(Demodulation Reference signal, DM-RS)를 송수신하는 방법 및 이를 위한 장치가 개시된다. 구체적으로, 무선 통신 시스템에서 단말(User equipment, UE)이 DMRS를 수신하는 방법에 있어서, 활성화 정보를 수신하는 단계; 상기 활성화 정보에 대한 피드백 정보를 전송하는 단계; i) 전송 설정 지시(transmission configuration indication, TCI) 필드 및 ii) 안테나 포트(antenna port) 필드를 포함하는 하향링크 제어 정보(Downlink Control Information, DCI)를 수신하는 단계; 및 상기 DCI에 기반하여 상기 DM-RS를 수신하는 단계를 포함하되, 상기 활성화 정보는 상기 TCI 필드의 코드 포인트(code point)와 TCI 상태(state)의 매핑과 관련된 정보를 포함하며, 상기 TCI 필드가 복수의 TCI 상태들과 매핑된 코드 포인트를 지시하고, 상기 안테나 포트 필드가 복수의 CDM(Code division multiplexing) 그룹들의 안테나 포트들을 지시하는 경우, 상기 복수의 TCI 상태들 중 첫 번째 TCI 상태는 상기 안테나 포트들의 지시 순서에 기반한 첫 번째 안테나 포트와 연관된 CDM 그룹에 대응될 수 있다.
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