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대한전자공학회 (The Institute of Electronics and Information Engineers)
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자원예약과 호 대기 버퍼 사용에 따른 가변등가대역에 의한 시스템 성능 분석

The Performance Analysis of System by Variable Effective Bandwidth According to use The Reserved Resource and The Waiting Buffer

  • 발행 : 2009.09.25
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초록

본 연구에서는 CDMA 시스템에서 신규 호의 차단률 및 핸드오프 호의 절단률에 따라 각 셀의 대역폭을 가변시켜 신규 호와 핸드오프 호를 처리하는 가변등가대역 개념을 이용한 호 수락 제어 방법을 사용하였다. 핸드오프 호를 위해서는 무선자원을 예약해 두며, 자원이 부족할 경우 신규 호와 핸드오프 호를 일정한 시간 동안 버퍼에 대기하도록 하여 가용자원이 발생하였을 때 대기 중인 호부터 처리하도록 하였다. 버퍼의 사용유무에 따른 시스템의 성능을 분석하였다.

In CDMA system, the call admission control method using the variable effective bandwidth concept is employed in this paper. The bandwidth for a new call and a handoff call is allocated by considering the number of mobile station being served and dynamically assigned by taking account of the blocking rate of new calls and the dropping rate of handoff calls. There is reserved resource for handoff call. In the case radio resource is insufficient, a new call and a handoff call stand by in buffer for constant time. When radio resource come about, the waiting call is allocated the resource. I analyze the performance of system according to existence and nonexistence of buffer by a simulation study.

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참고문헌

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