KR20170078849A - 강화된 물리 다운링크 제어 채널(epdcch)에 대한 블라인드 디코딩 - Google Patents
강화된 물리 다운링크 제어 채널(epdcch)에 대한 블라인드 디코딩 Download PDFInfo
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- KR20170078849A KR20170078849A KR1020177017586A KR20177017586A KR20170078849A KR 20170078849 A KR20170078849 A KR 20170078849A KR 1020177017586 A KR1020177017586 A KR 1020177017586A KR 20177017586 A KR20177017586 A KR 20177017586A KR 20170078849 A KR20170078849 A KR 20170078849A
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Abstract
Description
도 1은 하나의 예에 따라 레거시(legacy) 물리 다운링크 제어 채널(PDCCH)을 포함하는, 다운링크(DL) 송신을 위한 무선 프레임 자원들(예를 들어, 자원 그리드(grid))의 도면이다.
도 2는 하나의 예에 따른 다양한 요소 반송파(component carrier; CC) 대역폭들의 도면이다.
도 3은 하나의 예에 따른 강화된 물리 다운링크 제어 채널(EPDCCH) 및 물리 다운링크 공유 채널(PDSCH) 멀티플렉싱의 도면이다.
도 4는 하나의 예에 따라 각 자원 요소(resource element; RE) 별로 강화된 자원 요소 그룹(enhanced resource element group; EREG) 인덱스를 나타내는 하나의 물리 자원 블록(physical resource block; PRB) 쌍에서의 네 개의 강화된 제어 채널 요소(enhanced control channel element; ECCE)들의 도면이다.
도 5는 하나의 예에 따라 분산된 강화된 물리 다운링크 제어 채널(distributed enhanced physical downlink control channel; EPDCCH)에 대한 취합 레벨(aggregation level) 모호성(ambiguity)에 대한 하나의 예를 도시하는 도면이다.
도 6은 하나의 예에 따라 사용자 장비(UE)의 블라인드 디코딩(blind decoding)에서의 취합 레벨(AL) 모호성에 대한 하나의 예를 도시하는 도면이다.
도 7a는 하나의 예에 따라 AL 2에 대한 취합 레벨(AL) 특정 주파수 우선 매핑(mapping)의 도면이다.
도 7b는 하나의 예에 따라 AL 1에 대한 취합 레벨(AL) 특정 주파수 우선 매핑의 도면이다.
도 8은 하나의 예에 따라 노드에서 취합 레벨(AL) 특정 위상 시프팅(shifting)으로 강화된 물리 다운링크 제어 채널(EPDCCH) 프로세싱하는 것에 대한 흐름도이다.
도 9는 하나의 예에 따라 노드에서 다운링크 제어 정보(downlink control information; DCI)의 취합 레벨(AL) 특정 스크램블링(scrambling)으로 강화된 물리 다운링크 제어 채널(EPDCCH) 프로세싱하는 것에 대한 흐름도이다.
도 10은 하나의 예에 따라 노드에서 레이트 정합(rate matching) 후에 인터리버(interleaver)로 강화된 물리 다운링크 제어 채널(EPDCCH) 프로세싱하는 것에 대한 흐름도이다.
도 11은 하나의 예에 따라 노드에서 변조 후에 인터리버로 강화된 물리 다운링크 제어 채널(EPDCCH) 프로세싱하는 것에 대한 흐름도이다.
도 12는 하나의 예에 따라 강화된 물리 다운링크 제어 채널(EPDCCH)로부터 다운링크 제어 정보(downlink control information; DCI)를 블라인드 디코딩하는 방법의 흐름도이다.
도 13은 하나의 예에 따라 취합 레벨(AL)에 기초하여 강화된 물리 다운링크 제어 채널(EPDCCH)의 강화된 제어 채널 요소(ECCE)에 자원 요소들(RE)을 매핑하도록 동작하는 노드의 컴퓨터 회로소자의 기능을 도시하는 도면이다.
도 14는 하나의 예에 따른 노드(eNB) 및 무선 디바이스(예를 들어, UE)의 블록도이다.
도 15는 하나의 예에 따른 무선 디바이스(예를 들어, UE)의 도면이다..
이제 실례의 예시 실시예들에 대해 언급될 것이고, 본원에서 구체적 언어는 그와 같은 예시 실시예들을 기술하는 데에 사용될 것이다. 그럼에도 불구하고, 그에 의해 본 발명의 범위를 제한하는 것이 의도되지 않음이 이해될 것이다.
Claims (22)
- 강화된 물리 다운링크 제어 채널(enhanced physical downlink control channel: EPDCCH)로부터의 다운링크 제어 정보(downlink control information: DCI)를 블라인드 디코딩(blind decoding)하도록 구성된 사용자 장비(UE)의 장치로서,
상기 DCI가 성공적으로 디코딩될 때까지, 강화된 제어 채널 요소(enhanced control channel element; ECCE)에 대한 강화된 자원 요소 그룹(enhanced resource element group; EREG) 인덱스 맵(index map)들의 선택된 세트를 사용하여 물리 자원 블록(physical resource block; PRB) 세트 내의 PRB 영역 후보들로부터의 상기 EPDCCH의 상기 ECCE로부터 상기 DCI를 디코딩하는 것을 반복해서 시도하도록 구성된 하나 이상의 프로세서 및 메모리와,
기지국으로부터 상기 EPDCCH를 수신하도록 구성된 송수신기를 포함하는
장치.
- 제 1 항에 있어서,
상기 하나 이상의 프로세서 및 메모리는 EREG 인덱스 맵과 연관되는 추정된 취합 레벨(assumed aggregation level)이 인코딩된 취합 레벨과 상이할 경우 상기 DCI를 정확하게 디코딩하는데 실패하도록 더 구성되고, 디코딩된 취합 레벨은 상기 EPDCCH에서의 전송을 위해 상기 DCI를 인코딩하도록 상기 기지국에 의해 사용되는 것과 동일한 취합 레벨인
장치.
- 제 1 항에 있어서,
상기 하나 이상의 프로세서 및 메모리는 상기 DCI를 인코딩하는데 사용되는 것과 동일한 취합 레벨과 연관되는 EREG 인덱스 맵으로 상기 DCI를 정확하게 디코딩하도록 더 구성된
장치.
- 제 1 항에 있어서,
각각의 EREG 인덱스 맵은 물리 자원 블록(PRB) 쌍 내의 어떤 자원 요소(RE)들이 취합 레벨을 위해 상기 ECCE와 연관되는지를 결정하는 데 사용되고,
물리 자원 블록(PRB) 쌍의 상기 RE들은 상기 RE들이 EPDCCH 송신을 위해 할당되는 EREGS의 부분일 때 y(0)으로 시작하는 시퀀스로 연관되는 안테나 포트 상의 자원 요소들(k, l)에 매핑되는 복소 값 심볼들 y(0),...,y(Msymb - 1)의 블록을 포함하고, 여기서 Msymb은 물리 채널 상에서 송신되는 변조 심볼들의 수이고, 안테나 포트 p 상의 자원 요소들(k,l)로의 매핑은 서브프레임 내의 제 1 슬롯에서 시작해서 제 2 슬롯에서 종료되는, 우선 인덱스 k와 그 다음의 인덱스 l로의 증가하는 순서인
장치.
- 제 1 항에 있어서,
각각의 EREG 인덱스 맵은 상이한 취합 레벨(AL)을 위해 구성되는
장치.
- 제 1 항에 있어서,
상기 송수신기는 자원 할당(RA) 상태인 상기 EPDCCH를 가지는 물리 다운링크 공유 채널(PDSCH)을 수신하도록 더 구성되고, 상기 RA는 제 3 세대 파트너십 프로젝트(Third Generation Partnership Project; 3GPP) 롱텀 에볼루션(Long Term Evolution; LTE) 표준 릴리스(Release) 11에서 정의되는 RA 유형 0, RA 유형 1 또는 RA 유형 2이고,
상기 하나 이상의 프로세서 및 메모리는 상기 EPDCCH에서 상기 DCI를 포함하는 물리 자원 블록(PRB) 쌍 주변으로 상기 PDSCH를 레이트 정합(rate matching)하도록 더 구성되는
장치.
- 제 1 항에 있어서,
1, 2, 4, 8, 16 또는 32 ECCE에서 상기 DCI를 인코딩하는데 동일한 취합 레벨이 사용되는
장치.
- 제 1 항에 있어서,
상기 하나 이상의 프로세서 및 메모리는
취합 레벨 모호성을 해소하고,
최저 ECCE 모호성을 해소하도록 더 구성되는
장치.
- 강화된 물리 다운링크 제어 채널(EPDCCH)로부터의 다운링크 제어 정보(DCI)를 블라인드 디코딩하기 위한 명령어를 저장한 적어도 하나의 비일시적 머신 판독가능 저장 매체로서,
상기 명령어는 사용자 장비(UE)의 하나 이상의 프로세서에 의해 실행되는 경우 상기 UE로 하여금,
상기 UE에서, 기지국으로부터 수신된 상기 EPDCCH를 처리하게 하고,
상기 UE에서, 상기 DCI가 성공적으로 디코딩될 때까지, 강화된 제어 채널 요소(ECCE)에 대한 강화된 자원 요소 그룹(EREG) 인덱스 매핑들의 선택된 세트를 사용하여 물리 자원 블록(PRB) 쌍으로부터의 상기 EPDCCH의 상기 ECCE로부터 상기 DCI를 디코딩하는 것을 반복해서 시도하게 하는
머신 판독가능 저장 매체.
- 제 9 항에 있어서,
상기 하나 이상의 프로세서에 의해 실행되는 경우 상기 UE로 하여금
특정 취합 레벨과 연관되는 EREG 인덱스 매핑이 사용되는 경우 상기 DCI를 정확하게 디코딩하게 하는 명령어를 더 포함하되,
상기 특정 취합 레벨은 상기 DCI를 인코딩하는데 사용되는
머신 판독가능 저장 매체.
- 제 9 항에 있어서,
상기 하나 이상의 프로세서에 의해 실행되는 경우 상기 UE로 하여금
EREG 인덱스 매핑과 연관되는 추정된 취합 레벨이 인코딩된 취합 레벨과 상이할 경우 상기 DCI를 정확하게 디코딩하지 않게 하는 명령어를 더 포함하는
머신 판독가능 저장 매체.
- 제 9 항에 있어서,
각각의 EREG 인덱스 매핑은 물리 자원 블록(PRB) 쌍 내의 어떤 자원 요소(RE)들이 각 ECCE와 연관되는지를 결정하는 데 사용되고,
물리 자원 블록(PRB) 쌍의 상기 RE들은 상기 RE들이 EPDCCH 송신을 위해 할당되는 EREGS의 부분일 때 y(0)으로 시작하는 시퀀스로 연관되는 안테나 포트 상의 자원 요소들(k, l)에 매핑되는 복소 값 심볼들 y(0),...,y(Msymb - 1)의 블록을 포함하고, 여기서 Msymb은 물리 채널 상에서 송신되는 변조 심볼들의 수이고, 안테나 포트 p 상의 자원 요소들(k,l)로의 매핑은 서브프레임 내의 제 1 슬롯에서 시작해서 제 2 슬롯에서 종료되는, 우선 인덱스 k와 그 다음의 인덱스 l로의 증가하는 순서인
머신 판독가능 저장 매체.
- 제 9 항에 있어서,
각각의 EREG 인덱스 매핑은 상이한 취합 레벨(AL)을 위해 구성되는
머신 판독가능 저장 매체.
- 제 9 항에 있어서,
각각의 ECCE는 상기 PRB 쌍 또는 다수의 PRB 쌍 내에서 주파수 또는 시간상 다른 ECCE들과 함께 분포되거나, 각각의 EREG는 상기 PRB 쌍 또는 다수의 PRB 쌍 내에서 주파수 또는 시간상 다른 EREG들과 함께 분포되는
머신 판독가능 저장 매체.
- 제 9 항에 있어서,
상기 하나 이상의 프로세서에 의해 실행되는 경우 상기 UE로 하여금
취합 레벨을 결정하게 하고,
최저 ECCE 값을 결정하게 하는 명령어를 더 포함하는
머신 판독가능 저장 매체.
- 제 9 항에 있어서,
상기 하나 이상의 프로세서에 의해 실행되는 경우 상기 UE로 하여금
추정된 취합 레벨이 인코딩된 취합 레벨과 상이할 경우 상기 DCI를 디코딩하는데 실패하게 하고- 상기 UE는 상기 추정된 취합 레벨과 연관되는 상기 EREG 인덱스 매핑으로 디코딩하려 시도하고, 상기 인코딩된 취합 레벨은 상기 EPDCCH에서의 전송을 위해 상기 DCI를 인코딩하도록 상기 기지국에 의해 사용되는 취합 레벨임 -,
또 다른 취합 레벨과 연관되는 또 다른 EREG 인덱스 매핑을 사용하여 상기 DCI를 디코딩하도록 시도하게 하는 명령어를 더 포함하는
머신 판독가능 저장 매체.
- 취합 레벨(aggregation level: AL)에 기초하여 자원 요소(RE)들을 강화된 물리 다운링크 제어 채널(EPDCCH)의 강화된 제어 채널 요소(ECCE)들에 매핑하도록 동작가능한 기지국으로서,
하나 이상의 프로세서 및 메모리를 포함하되,
상기 하나 이상의 프로세서 및 메모리는
다운링크 제어 정보(DCI)를 송신하는 데 사용되는 ECCE의 수를 결정하고,
상기 DCI를 송신하는 데 사용되는 ECCE의 상기 수에 기초하여 상기 DCI를 송신하는 데 사용되는 상기 취합 레벨을 결정하며,
강화된 자원 요소 그룹(EREG) 인덱스를 사용하여 상기 DCI에 할당되는 상기 ECCE의 EREG들에 자원 요소(RE)들을 매핑하여 사용자 장비(UE)가 EREG 인덱스 맵으로 상기 DCI를 디코딩하도록 구성된
기지국.
- 제 17 항에 있어서,
상기 하나 이상의 프로세서 및 메모리는
상기 DCI에 의해 점유되는 상기 RE들에 걸쳐 주파수 우선 순차 매핑을 사용하여 상기 RE를 국지화된 EPDCCH 송신 방식에 대한 물리 자원 블록(PRB) 쌍에 매핑하거나,
상기 DCI에 의해 점유되는 상기 RE들에 걸쳐 주파수 우선 순차 매핑을 사용하여 상기 RE를 분산 EPDCCH 송신 방식에 대한 복수의 PRB 쌍에 매핑하도록 더 구성되고,
상기 분산 EPDCCH 송신 방식에 대한 하나의 DCI는 상기 복수의 PRB 쌍으로부터의 EREG들을 사용하여 반송되는
기지국.
- 제 17 항에 있어서,
상기 하나 이상의 프로세서 및 메모리는
상기 DCI에 의해 점유되는 상기 RE들에 걸쳐 시간 우선 순차 매핑을 사용하여 상기 RE를 국지화된 EPDCCH 송신 방식에 대한 물리 자원 블록(PRB) 쌍으로 매핑하거나,
상기 DCI에 의해 점유되는 상기 RE들에 걸쳐 시간 우선 순차 매핑을 사용하여 상기 RE를 분산 EPDCCH 송신 방식에 대한 복수의 PRB 쌍들로 매핑하도록 더 구성되고,
상기 분산 EPDCCH 송신 방식에 대한 하나의 DCI는 상기 복수의 PRB 쌍으로부터의 EREG들을 사용하여 반송되는
기지국.
- 제 17 항에 있어서,
물리 자원 블록(PRB) 쌍의 RE들은 상기 RE들이 EPDCCH 송신을 위해 할당되는 EREGS의 부분일 때 y(0)으로 시작하는 시퀀스로 연관되는 안테나 포트 상의 자원 요소들(k, l)에 매핑되는 복소 값 심볼들 y(0),...,y(Msymb - 1)의 블록을 포함하고, 여기서 Msymb은 물리 채널 상에서 송신되는 변조 심볼들의 수이고, 안테나 포트 p 상의 자원 요소들(k,l)로의 매핑은 서브프레임 내의 제 1 슬롯에서 시작해서 제 2 슬롯에서 종료되는, 우선 인덱스 k와 그 다음의 인덱스 l로의 증가하는 순서인
기지국.
- 제 17 항에 있어서,
상기 하나 이상의 프로세서 및 메모리는
자원을 상기 EPDCCH가 있는 물리 다운링크 공유 채널(PDSCH)에 할당하고,
자원 할당된 상태에서 송신하도록 상기 PDSCH를 처리하도록 더 구성되는
기지국.
- 제 17 항에 있어서,
상기 EREG 인덱스는 국지화된 EPDCCH 송신 방식 또는 분산 EPDCCH 송신 방식에 기초하여 선택되거나,
상기 ECCE는 물리 자원 블록(PRB) 쌍- 각 PRB 쌍은 4개의 ECCE 또는 2개의 ECCE를 포함함 -에서 송신되거나,
상기 EPDCCH는 국지화된 EPDCCH 또는 분산 EPDCCH인
기지국.
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