The KIPS Transactions:PartC (정보처리학회논문지C)

Korea Information Processing Society (한국정보처리학회)
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Efficient Handoff Time Decision Algorithm using Differential RSSI

차등 RSSI를 이용한 효율적인 핸드오프 시점 결정 알고리즘

  • Published : 2006.06.01
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Abstract

This paper proposes a handoff time decision mechanism to utilize resource efficiently by using Differential Received Signal Strength Indicator (DRSSI). DRSSI can be used to predict the movement direction of Mobile Station (MS). In other words, DRSSI changes its sign (+ or -) when a MS changes movement direction. This mechanism maximizes resource availability of Base Station (BS) by predicting resource reservation of MS and by giving priority of resource to MS. It is possible when a BS predicts the behavior of MSs by monitoring the DRSSI of MSs in overlapped region among cells. Additionally, we show that our proposed mechanism has better handoff blocking probability than existing mechanism with numerical modeling and analysis.

본 논문은 차등 RSSI(DRSSI: Differential Received Signal Strength Indicator)를 이용하여 자원을 효율적으로 사용할 수 있는 핸드오프 처리 방안에 대해 제안한다. DRSSI는 이동국의 이동 방향을 예측하는데 사용할 수 있다. 즉, 이동국의 움직임이 바뀌는 경우 DRSSI의 극성(+, -)이 바뀌는 특성을 이용하여 이동국이 셀 사이의 중첩 지역에 머무는 동안 극성의 변화를 우선적으로 판단하여 다수의 단말기의 방향을 예측함으로써 핸드오프 및 자원을 예약할 이동국을 예측하고, 자원의 우선적인 사용권을 부여하는 방안을 제시하여 자원의 유효 상태를 극대화하는 방안을 제시한다. 또한, 수학적 모델링 분석을 통해 핸드오프 차단 확률이 기존의 방법보다 우수함을 보여준다.

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References

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