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특허 검색
구분 출원국
출원년도 ~ 키워드


등록 이동통신 시스템에서 상향링크 동기화 요청 방법, 그에 따른 CDMA 할당 정보 요소 구조 및 그에 따른 장치

이동통신 시스템에서 상향링크 동기화 요청 방법, 그에 따른 CDMA 할당 정보 요소 구조 및 그에 따른 장치
이미지 확대
김성경, 임광재, 안지환, 윤철식
12304672 (2007.03.20)
20090190560 (2009.07.30)
8503404 (2013.08.06)
The present invention relates to an uplink synchronization request method in a mobile communication system, a CDMA allocation information element structure thereof, and an apparatus using the same. For this purpose the uplink synchronization request method includes: when uplink traffic is generated, determining whether an uplink synchronization error occurs; when the uplink synchronization error occurs, calculating a timing adjustment value; and transmitting a bandwidth request code including the calculated timing adjustment value to a base station and performing a bandwidth request. According to the present invention, the PSS compares a reference adjustment value and an arrival time of a downlink preamble to calculate uplink synchronization timing and synchronize an uplink of the PSS that requests bandwidth allocation through a bandwidth request ranging process to thereby maximize resource use efficiency in the uplink synchronization.
KSP 제안 키워드
Arrival Time, Bandwidth request, Communication system, Information Element, Resource use, Synchronization error, Uplink synchronization, Use efficiency, bandwidth allocation, base station(BS), mobile communication, mobile communication system, timing adjustment