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1. WO2021066625 - METHODS FOR TRANSMITTING AND RECEIVING DOWNLINK DATA CHANNEL IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUSES THEREFOR

Publication Number WO/2021/066625
Publication Date 08.04.2021
International Application No. PCT/KR2020/013509
International Filing Date 05.10.2020
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
H04W 56/00 2009.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
WWIRELESS COMMUNICATION NETWORKS
56Synchronisation arrangements
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 7/024 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
022Site diversity; Macro-diversity
024Co-operative use of antennas at several sites, e.g. in co-ordinated multipoint or co-operative multiple-input multiple-output systems
H04B 17/373
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
BTRANSMISSION
17Monitoring; Testing
30of propagation channels
373Predicting channel quality parameters
Applicants
  • 엘지전자 주식회사 LG ELECTRONICS INC. [KR]/[KR]
Inventors
  • 김규석 KIM, Kyuseok
  • 김형태 KIM, Hyungtae
  • 강지원 KANG, Jiwon
Agents
  • 특허법인 로얄 ROYAL PATENT & LAW OFFICE
Priority Data
10-2019-012273203.10.2019KR
10-2019-014303408.11.2019KR
Publication Language Korean (KO)
Filing Language Korean (KO)
Designated States
Title
(EN) METHODS FOR TRANSMITTING AND RECEIVING DOWNLINK DATA CHANNEL IN WIRELESS COMMUNICATION SYSTEM, AND APPARATUSES THEREFOR
(FR) PROCÉDÉS DE TRANSMISSION ET DE RÉCEPTION DE CANAL DE DONNÉES DE LIAISON DESCENDANTE DANS UN SYSTÈME DE COMMUNICATION SANS FIL, ET APPAREILS ASSOCIÉS
(KO) 무선 통신 시스템에서 하향링크 데이터 채널의 송수신 방법 및 이에 대한 장치
Abstract
(EN)
Disclosed are methods for transmitting and receiving a downlink data channel in a wireless communication system, and apparatuses therefor. More specifically, a method for receiving, by a user equipment (UE), a downlink data channel in a wireless communication system comprises the steps of: receiving, from a base station, configuration information for the downlink data channel, wherein the configuration information includes configurations of a plurality of transmission configuration indication (TCI) states, and each TCI state includes parameters for configuring a quasi-co-location (QCL) relationship between a reference signal and the downlink data channel; receiving an activation command from the base station, wherein combinations of one or more TCI states selected from the plurality of TCI states and codepoints of a TCI field of downlink control information (DCI) are mapped on the basis of the activation command; receiving, from the base station, the DCI including the TCI field; and receiving, from the base station, the downlink data channel and a phase tracking reference signal (PTRS) on the basis of the DCI, wherein the frequency density of the PTRS may be determined by the number of resource blocks associated with each TCI state, on the basis of a codepoint to which the combination of the plurality of TCI states are mapped being indicated by the TCI field and resources of frequency domains associated with each TCI state of the plurality of TCI states not overlapping each other.
(FR)
Des procédés de transmission et de réception de canal de données de liaison descendante dans un système de communication sans fil, et des appareils associés sont divulgués. Plus précisément, l'invention concerne un procédé de réception, par un équipement utilisateur (UE), d'un canal de données de liaison descendante dans un système de communication sans fil comprenant les étapes suivantes : la réception, en provenance d'une station de base, des informations de configuration pour le canal de données de liaison descendante, les informations de configuration comprenant des configurations d'une pluralité d'états d'indication de configuration de transmission (TCI), et chaque état de TCI comprend des paramètres pour configurer une relation de quasi-co-emplacement (QCL) entre un signal de référence et le canal de données de liaison descendante ; la réception d'une commande d'activation en provenance de la station de base, des combinaisons d'un ou de plusieurs états de TCI étant sélectionnées parmi la pluralité d'états de TCI et de points de code d'un champ de TCI d'informations de commande de liaison descendante (DCI) sont mis en correspondance sur la base de la commande d'activation ; la réception, en provenance de la station de base, des DCI comprenant le champ de TCI ; et la réception, en provenance de la station de base, du canal de données de liaison descendante et d'un signal de référence de suivi de phase (PTRS) sur la base des DCI, la densité de fréquence du PTRS pouvant être déterminée par le nombre de blocs de ressources associés à chaque état de TCI, sur la base d'un point de code auquel la combinaison de la pluralité d'états de TCI est mappée, étant indiquée par le champ de TCI et des ressources de domaines de fréquence associés à chaque état de TCI de la pluralité d'états de TCI ne se chevauchant pas mutuellement.
(KO)
본 발명에서는 무선 통신 시스템에서 하향링크 데이터 채널을 송수신하는 방법 및 이를 위한 장치가 개시된다. 구체적으로, 무선통신 시스템에서 단말(User equipment, UE)이 하향링크 데이터 채널을 수신하는 방법에 있어서, 기지국으로부터, 상기 하향링크 데이터 채널에 대한 설정 정보를 수신하는 단계, 상기 설정 정보는 복수의 TCI(transmission configuration indication) state들의 설정(configuration)들을 포함하고, 각 TCI state는 참조 신호(reference signal)와 상기 하향링크 데이터 채널 간의 quasi-co-location(QCL) 관계(relationship)를 설정하기 위한 파라미터들을 포함하며; 상기 기지국으로부터, 활성화 명령(command)를 수신하는 단계, 상기 활성화 명령에 기반하여, 상기 복수의 TCI state들로부터 선택되는 하나 이상의 TCI state들의 조합(combination)들과 하향링크 제어 정보(Downlink Control Information, DCI)의 TCI 필드의 코드포인트(codepoint)들이 매핑되며; 상기 기지국으로부터, 상기 TCI 필드를 포함하는 상기 DCI를 수신하는 단계; 및 상기 기지국으로부터, 상기 DCI에 기반하여 상기 하향링크 데이터 채널과 위상 추적 참조 신호(Phase Tracking Reference Signal, PTRS)를 수신하는 단계를 포함하되, 상기 TCI 필드에 의해 복수의 TCI state들의 조합이 매핑 된 코드포인트가 지시되고 및 상기 복수의 TCI state들의 각 TCI state와 연관된 주파수 영역의 자원이 중첩되지 않는 것에 기초하여, 상기 PTRS의 주파수 밀도는 각 TCI state와 연관된 자원 블록(resource block)들의 수에 의해 결정될 수 있다.
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