KR101634917B1 - Mimo 무선 통신 시스템에서의 에러 검출 및 검사의 피드백 시그널링 - Google Patents
Mimo 무선 통신 시스템에서의 에러 검출 및 검사의 피드백 시그널링 Download PDFInfo
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- G06F11/07—Responding to the occurrence of a fault, e.g. fault tolerance
- G06F11/08—Error detection or correction by redundancy in data representation, e.g. by using checking codes
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Abstract
Description
도 1은 복수의 WTRU와 eNB를 포함하는 무선 통신 시스템을 도시한다.
도 2는 도 1의 무선 통신 시스템의 WTRU와 eNB의 기능 블럭도이다.
도 3은 한 실시예에 따른 에러 검사 및 정정을 갖춘 PMI 피드백의 블럭도이다.
도 4는 또 다른 실시예에 따른 에러 검사 및 정정을 갖춘 PMI 피드백의 블럭도이다.
도 5는 대안적 실시예에 따른 에러 검사 및 정정을 갖춘 PMI 피드백의 블럭도이다.
도 6은 또 다른 대안적 실시예에 따른 에러 검사 및 정정을 갖춘 PMI 피드백의 블럭도이다.
도 7은 역시 또 다른 대안적 실시예에 따른 에러 검사 및 정정을 갖춘 PMI 피드백의 블럭도이다.
도 8은 역시 또 다른 대안적 실시예에 따른 에러 검사 및 정정을 갖춘 PMI 피드백의 블럭도이다.
도 9는 역시 또 다른 대안적 실시예에 따른 에러 검사 및 정정을 갖춘 PMI 및 CQI 피드백의 블럭도이다.
도 10은 역시 또 다른 대안적 실시예에 따른 에러 검사 및 정정을 갖춘 PMI 및 CQI 피드백의 블럭도이다.
도 11은 역시 또 다른 대안적 실시예에 따른 에러 검사 및 정정을 갖춘 PMI, CQI 및 ACK/NACK 피드백의 블럭도이다.
도 12는 역시 또 다른 대안적 실시예에 따른 에러 검사 및 정정을 갖춘 PMI, CQI 및 ACK/NACK 피드백의 블럭도이다.
120: eNB
215: 프로세서
216: 수신기
217: 전송기
314: 채널 코딩
Claims (16)
- 무선 송수신 유닛(WTRU; wireless transmit receive unit)에서의 피드백 방법에 있어서,
상기 WTRU가 피드백 신호 - 상기 피드백 신호는 프리코딩 행렬 인덱스(PMI; precoding matrix index) 또는 채널 품질 인덱스(CQI; channel quality index) 중 적어도 하나를 포함함 - 를 생성하는 단계;
상기 WTRU가, 인코딩될 상기 피드백 신호의 비트수를 결정하는 단계;
상기 WTRU가, 인코딩될 상기 피드백 신호의 비트수에 기초하여, 상기 피드백 신호에 적용할 에러 검출 및 보정 스킴(error detection and correction scheme)의 타입을 선택하는 단계 - 상기 에러 검출 및 보정 스킴의 타입의 선택은, 상기 피드백 신호에 첨부(attach)할 에러 검사(EC; error check) 비트의 개수를 선택하는 것과, 상기 피드백 신호 및 상기 선택된 개수의 EC 비트에 적용할 채널 코딩 스킴의 타입을 선택하는 것을 포함함 - ;
상기 WTRU가, 상기 선택된 타입의 채널 코딩 스킴을 이용하여 상기 피드백 신호 및 상기 선택된 개수의 EC 비트를 인코딩하는 단계; 및
상기 WTRU가 상기 인코딩된 피드백 신호를 전송하는 단계
를 포함하는, 무선 송수신 유닛(WTRU)에서의 피드백 방법. - 제1항에 있어서,
상기 에러 검출 및 보정 스킴의 에러 검출 메커니즘은 디스에이블되고(diabled), 상기 EC 비트의 개수는 0으로 선택되는 것인, 무선 송수신 유닛(WTRU)에서의 피드백 방법. - 제1항에 있어서,
상기 EC 비트의 개수는 순환 중복 검사(cyclic redundancy check) 비트의 개수를 포함하는 것인, 무선 송수신 유닛(WTRU)에서의 피드백 방법. - 제1항에 있어서,
상기 인코딩된 피드백 신호는 데이터 타입 채널을 통해 전송되는 것인, 무선 송수신 유닛(WTRU)에서의 피드백 방법. - 제4항에 있어서,
상기 인코딩된 피드백 신호는, 터보 코딩된 사용자 데이터 비트들과 함께 상기 데이터 타입 채널을 통해 전송되는 것인, 무선 송수신 유닛(WTRU)에서의 피드백 방법. - 무선 송수신 유닛(WTRU)에 있어서,
프로세서를 포함하고, 상기 프로세서는 적어도 부분적으로,
피드백 신호 - 상기 피드백 신호는 프리코딩 행렬 인덱스(PMI) 또는 채널 품질 인덱스(CQI) 중 적어도 하나를 포함함 - 를 생성하고;
인코딩될 상기 피드백 신호의 비트수를 결정하고;
인코딩될 상기 피드백 신호의 비트수에 기초하여, 상기 피드백 신호에 첨부할 에러 검사(EC) 비트의 개수를 선택하고;
인코딩될 상기 피드백 신호의 비트수에 기초하여, 상기 피드백 신호 및 상기 선택된 개수의 EC 비트에 적용할 채널 코딩 스킴의 타입을 선택하고;
상기 선택된 타입의 채널 코딩 스킴을 이용하여 상기 피드백 신호 및 상기 선택된 개수의 EC 비트를 인코딩하며;
상기 인코딩된 피드백 신호를 전송하도록
구성되는 것인, 무선 송수신 유닛(WTRU). - 제6항에 있어서,
상기 피드백 신호에의 첨부를 위해 0개의 EC 비트가 선택되는 것인, 무선 송수신 유닛(WTRU). - 제7항에 있어서,
상기 피드백 신호에 적용할 상기 채널 코딩 스킴의 타입으로서 블록 코딩 스킴이 선택되는 것인, 무선 송수신 유닛(WTRU). - 무선 송수신 유닛(WTRU; wireless transmit receive unit)에서 구현되는 방법에 있어서,
상기 WTRU가 피드백 비트들 - 상기 피드백 비트들은 프리코딩 행렬 인덱스(PMI; precoding matrix index) 또는 채널 품질 인덱스(CQI; channel quality index) 중 하나 이상을 포함함 - 을 생성하는 단계;
상기 WTRU가 인코딩될 피드백 비트들의 개수에 기초하여 상기 피드백 비트들에 첨부할 순환 중복 검사(CRC; cyclic redundancy check) 비트들의 개수를 선택하는 단계;
상기 WTRU가 인코딩될 피드백 비트들의 개수에 기초하여 선택된 개수의 CRC 비트들과 상기 피드백 비트들에 적용할 채널 코딩 스킴의 타입을 선택하는 단계;
상기 WTRU가 상기 선택된 타입의 채널 코딩 스킴을 사용하여 선택된 개수의 CRC 비트들과 상기 피드백 비트들을 인코딩하는 단계; 및
상기 WTRU가 상기 인코딩된 피드백 비트들을 송신하는 단계를 포함하는, 무선 송수신 유닛(WTRU)에서 구현되는 방법. - 제9항에 있어서,
상기 피드백 비트들과 상기 선택된 개수의 CRC 비트들에 적용할 채널 코딩 스킴의 타입으로서 콘볼루션 코딩 스킴(convolutional coding scheme)이 선택되는 것인, 무선 송수신 유닛(WTRU)에서 구현되는 방법. - 제9항에 있어서,
상기 피드백 비트들에 첨부하기 위해 선택된 순환 중복 검사(CRC)의 개수는 16인 것인, 무선 송수신 유닛(WTRU)에서 구현되는 방법. - 제9항에 있어서,
상기 피드백 비트들에 첨부하기 위해 선택된 순환 중복 검사(CRC)의 개수는 0인 것인, 무선 송수신 유닛(WTRU)에서 구현되는 방법. - 무선 송수신 유닛(WTRU; wireless transmit receive unit) 에 있어서,
상기 WTRU는 회로를 포함하고, 상기 회로는
피드백 비트들 - 상기 피드백 비트들은 프리코딩 행렬 인덱스(PMI; precoding matrix index) 또는 채널 품질 인덱스(CQI; channel quality index) 중 하나 이상을 포함함 - 을 생성하고,
인코딩될 피드백 비트들의 개수에 기초하여 상기 피드백 비트들에 첨부할 순환 중복 검사(CRC; cyclic redundancy check) 비트들의 개수를 선택하고,
인코딩될 피드백 비트들의 개수에 기초하여 선택된 개수의 CRC 비트들과 상기 피드백 비트들에 적용할 채널 코딩 스킴의 타입을 선택하고,
상기 선택된 타입의 채널 코딩 스킴을 사용하여 선택된 개수의 CRC 비트들과 상기 피드백 비트들을 인코딩하고,
상기 인코딩된 피드백 비트들을 송신하도록 구성되는 것인, 무선 송수신 유닛(WTRU). - 제13항에 있어서,
상기 선택된 타입의 채널 코딩 스킴은 콘볼루션 코딩 스킴(convolutional coding scheme)을 포함하는 것인, 무선 송수신 유닛(WTRU). - 제13항에 있어서,
상기 선택된 타입의 채널 코딩 스킴은 블록 코딩 스킴을 포함하는 것인, 무선 송수신 유닛(WTRU). - 제13항에 있어서,
상기 회로는 또한, 상기 피드백 비트들의 송신에 응답하여 프리코딩 확인(precoding validation) 메시지를 수신하도록 구성되는 것인, 무선 송수신 유닛(WTRU).
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| US20060209980A1 (en) | 2005-03-04 | 2006-09-21 | Samsung Electronics Co., Ltd. | Beam and power allocation method for MIMO communication system |
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