KR102573235B1 - 하향링크 제어 채널의 송수신 방법 및 이를 이용하는 장치 - Google Patents
하향링크 제어 채널의 송수신 방법 및 이를 이용하는 장치 Download PDFInfo
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Abstract
Description
도 2는 본 발명의 일 실시예에 따른 통신 시스템에서 통신 노드를 도시한 블록도이다.
도 3은 본 발명의 일 실시예에 따른 PDCCH 전송 방법을 설명하기 위한 개념도이다.
도 4a는 본 발명의 일 실시예에 따른 PDCCH 전송 방법의 제1 시나리오에 대한 적용 예를 설명하기 위한 개념도이며, 도 4b는 본 발명의 일 실시예에 따른 PDCCH 전송 방법의 제2 시나리오에 대한 적용 예를 설명하기 위한 개념도이다.
도 5a 및 도 5b는 본 발명의 일 실시예에 따른 PDCCH 전송 방법에서 복수의 PDCCH를 통해 1개의 PDSCH를 스케줄링 하는 경우를 설명하기 위한 개념도들이다.
도 6은 본 발명의 일 실시예에 따른 PDCCH 전송 방법에서 복수의 PDCCH를 통해 1개의 PDSCH를 스케줄링 하는 경우를 시간-주파수 자원 관점에서 설명하기 위한 개념도이다.
도 7은 본 발명의 일 실시예에 따른 PDCCH 전송 방법에서 각 PDCCH별로 다른 PDSCH를 스케줄링하는 경우를 설명하기 위한 개념도이다.
도 8은 본 발명의 일 실시예에 따른 PDCCH 전송 방법에서 각 PDCCH별로 다른 PDSCH를 스케줄링하는 경우를 시간-주파수 자원 관점에서 설명하기 위한 개념도이다.
도 9a 내지 도 9d는 본 발명의 일 실시예에 따른 PDCCH 탐색 공간 설정 방법을 설명하기 위한 개념도들이다.
도 10은 본 발명의 일 실시예에 따른 PDCCH 탐색 공간 설정 방법을 보다 자세히 설명하기 위한 개념도이다.
부반송파 간격 | 15kHz | 30kHz | 60kHz | 120kHz | 240kHz |
OFDM 심볼 길이(㎲) | 66.7 | 33.3 | 16.7 | 8.3 | 4.2 |
CP 길이(㎲) | 4.76 | 2.38 | 1.19 | 0.60 | 0.30 |
1ms 내 OFDM 심볼 수 | 14 | 28 | 56 | 112 | 224 |
Claims (20)
- 단말에서 수행되는 물리 하향링크 제어 채널(PDCCH)을 모니터링하는 방법으로,
기지국으로부터 제1 제어자원집합(CORESET)의 설정 정보와 제2 CORESET의 설정 정보를 수신하는 단계;
상기 기지국으로부터 상기 제1 CORESET과 연관된 타입1(type 1) 공통 탐색 공간(CSS)과 상기 제2 CORESET과 연관된 다른 탐색 공간을 설정 받는 단계; 및
상기 타입1 공통 탐색 공간과 상기 다른 탐색 공간이 적어도 하나의 심볼에서 시간적으로 겹칠 경우, 상기 타입1 공통 탐색 공간을 모니터링하고 상기 타입1 공통 탐색 공간에서 PDCCH를 수신하는 단계를 포함하고,
상기 타입1 공통 탐색 공간은 상기 단말에 의한 초기 접속 절차와 연관된 동기 신호/물리 방송 채널(SS/PBCH) 블록과 QCL(quasi-co-location) 관계를 가지며, 상기 다른 탐색 공간은 상기 단말의 상기 초기 접속 절차와 연관된 상기 SS/PBCH 블록과 다른 SS/PBCH 블록과 QCL 관계를 가지는,
물리 하향링크 제어 채널 모니터링 방법. - 청구항 1에 있어서,
상기 타입1 공통 탐색 공간을 모니터링하는 단계에서, 상기 다른 탐색 공간의 모니터링은 생략되는,
물리 하향링크 제어 채널 모니터링 방법. - 청구항 1에 있어서,
상기 제1 CORESET은 상기 제2 CORESET과 동일한,
물리 하향링크 제어 채널 모니터링 방법. - 청구항 1에 있어서,
상기 다른 탐색 공간은 타입0, 타입0A, 타입2, 또는 타입3 공통 탐색 공간 또는 단말 특정적(terminal-specific) 탐색 공간인,
물리 하향링크 제어 채널 모니터링 방법. - 청구항 1에 있어서,
상기 단말의 상기 초기 접속 절차와 연관된 상기 SS/PBCH 블록은 상기 단말이 상기 초기 접속 절차를 위해서 물리 랜덤 액세스 채널(PRACH)을 전송하기 위해서 이용하는 SS/PBCH 블록인,
물리 하향링크 제어 채널 모니터링 방법. - 청구항 1에 있어서,
상기 단말은 랜덤 액세스-무선 네트워크 임시 식별자(RA-RNTI)로 스크램블링된 CRC(cyclic redundancy check)를 가진 PDCCH를 상기 타입1 공통 탐색 공간에서 검출하는,
물리 하향링크 제어 채널 모니터링 방법. - 청구항 1에 있어서,
상기 다른 SS/PBCH 블록은 상기 다른 탐색 공간을 위해서 상기 기지국에 의해서 설정된 SS/PBCH 블록인,
물리 하향링크 제어 채널 모니터링 방법. - 단말에서 수행되는 세컨더리 셀(secondary cell)을 위한 물리 하향링크 제어 채널(PDCCH)을 수신하는 방법으로,
기지국으로부터 세컨더리 셀을 설정받는 단계;
동기 신호/물리 방송 채널(SS/PBCH) 블록(들)과 연관된, 상기 세컨더리 셀을 위한 제어자원집합(CORESET)의 설정 정보를 상기 기지국으로부터 수신하는 단계; 및
상기 CORESET에서 PDCCH를 수신하는 단계를 포함하고,
상기 CORESET은 고정(fixed) 식별자를 가지며, 상기 CORESET의 자원들은 상기 CORESET의 상기 설정 정보와 상기 CORESET과 연관된 상기 SS/PBCH 블록(들)에 의해서 결정되고, 상기 PDCCH의 복조 참조 신호(DMRS)는 상기 CORESET과 연관된 상기 SS/PBCH 블록(들) 중 제1 SS/PBCH 블록과 QCL(quasi-co-location) 관계를 가지는,
물리 하향링크 제어 채널 수신 방법. - 청구항 8에 있어서,
상기 제1 SS/PBCH 블록은 무선 자원 측정(radio resource measurement(RRM))에 기초하여 상기 단말에 의해 결정되거나, 상기 기지국에 의해서 설정되는,
물리 하향링크 제어 채널 수신 방법. - 청구항 8에 있어서,
상기 PDCCH는 유니캐스트 데이터를 포함하는 물리 하향링크 공유 채널(PDSCH)을 스케쥴링하는 정보를 포함하고, 상기 PDCCH는 상기 CORESET과 연관된 단말-특정적 탐색 공간에서 수신되는,
물리 하향링크 제어 채널 수신 방법. - 청구항 8에 있어서,
상기 기지국으로부터 상기 CORESET과 연관된 상기 SS/PBCH 블록(들)의 수신 및 측정을 위한 정보를 수신하는 단계를 추가로 포함하는,
물리 하향링크 제어 채널 수신 방법. - 청구항 8에 있어서,
상기 CORESET과 연관된 상기 SS/PBCH 블록(들)은 상기 세컨더리 셀 또는 상기 세컨더리 셀이 아닌 다른 셀을 통해서 수신되는,
물리 하향링크 제어 채널 수신 방법. - 청구항 8에 있어서,
상기 CORESET의 상기 고정 식별자는 0인,
물리 하향링크 제어 채널 수신 방법. - 청구항 8에 있어서,
상기 CORESET의 상기 설정 정보는 무선 자원 제어(radio resource control(RRC)) 시그널링 절차를 통해 프라이머리 셀(primary cell)로부터 수신되는,
물리 하향링크 제어 채널 수신 방법. - 청구항 8에 있어서,
상기 단말은 상기 세컨더리 셀을 이용하여 캐리어 집성(carrier aggregation) 동작 또는 이중 연결(dual connectivity) 동작을 수행하는,
물리 하향링크 제어 채널 수신 방법. - 청구항 8에 있어서,
상기 PDCCH의 상기 DMRS와 상기 제1 SS/PBCH 블록 간의 상기 QCL 관계는 수신 빔(reception beam) 또는 수신 채널 공간 정보(reception channel spatial information)의 관점에서 성립되는,
물리 하향링크 제어 채널 수신 방법.
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