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구분 출원국
출원년도 ~ 키워드

상세정보

등록 효율적인 ACK/NACK 채널 송수신 기법과 장치

효율적인 ACK/NACK 채널 송수신 기법과 장치
이미지 확대
발명자
이희수, 정현규
출원번호
12517968 (2007.12.05)
공개번호
20100315961 (2010.12.16)
등록번호
8149769 (2012.04.03)
출원국
미국
협약과제
06MM1100, 4세대 이동통신용 적응 무선접속 및 전송 기술개발, 김대식
초록
Provided are apparatus and method of transmitting and receiving a reception acknowledgment signal in a mobile communication system. The apparatus and method of receiving the reception acknowledgment signal includes respectively calculating a probability that the received reception acknowledgment signal is a reception success signal and a probability that the reception acknowledgment signal is a reception failure signal, by using an estimated packet error rate predicted based on a pre-set required packet error rate and determining whether the reception acknowledgment signal is the reception success signal or the reception failure signal. The apparatus and method of transmitting a reception acknowledgment signal includes determining transmission powers of a reception success signal and a reception failure signal in order to maximize a difference between a first complex signal and a second complex signal, the first complex signal being modulated for the reception success and the second complex signal being modulated for the reception failure, based on the average transmission power and a pre-set required packet error rate. The apparatus and method of transmitting reception acknowledgment signals transmits a single packet indicating reception successes or failures for a plurality of received data packets by using variable length coding based on a pre-set required packet error rate. According to the present invention, non-uniformity of frequency between the reception success signal and the reception failure signal is considered to increase correct reception rate of the reception acknowledgment signal.