한국통신학회논문지 B : 네트워크 및 융합 서비스, v.28, no.9A, pp.736-745
ISSN
1226-4717
Publisher
한국통신학회 (KICS)
Language
Korean
Type
Journal Article
Abstract
본 논문은 CDMA/TDD 시스템에서. 높은 전송률과 일정한 QoS를 갖는 실시간 클래스의 무선 자원 할당에 대한 방법론을 제시한다. 실시간 클래스와 비실시간 클래스를 제어하기 위하여, 예약 액세스 기법과 우선 순위 기법이 각각 제안된다. 또한 각 셀 링크간 간섭에 의한 성능 감소를 예방하기 위하여, 예약 액세스 기법과 우선 순위 기법이 각각 제안된다. 또한 각 셀 링크간 간섭에 의한 성능 감소를 예방하기 위하여 슬롯 할당 기법을 제안한다. 제시된 방안들을 통하여 실시간 클래스의 연속성을 보장하고 비실시간 가입자를 최대로 수용할 수 있다. 다중 셀 환경과 멀티미디어 서비스 모델을 가정하여, 제안된 기법의 성능이 전송 지연, 채널 이용률 그리고 데이터 손실 등을 근거로 하여 평가된다. 시뮬레이션 결과는 상당한 성능 향상이 있음을 보인다.
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