無線通訊環境下之通訊允許控制機制研究

Abstract

隨著無線通訊網路技術的精進，通訊用戶期望的服務也就愈多。本文透過資源分配的觀點，提出三種通訊允許控制機制，其一為資源預先配置、其二為隨機早期偵測壅塞、其三為動態資源配置方式。本研究透過資源預先配置機制模擬現行基地台運作，並試圖導入隨機早期偵測壅塞機制及本研究所架構的動態資源配置機制於無線通訊環境中，並藉由模擬所得之新生成通訊端之中斷率與交遞通訊端之阻斷率來比較基地台之服務績效差異。

With the proliferation of the wireless networks technologies, mobile users are expected to demand the same quality-of-service available to fixed users. This paper presents three different mechanisms for call admission control with the view of resources allocation. The first one is fixed assignment in advance, the second is random early detection, and the third is dynamic reservation. This paper uses fixed assignment in advance as mechanism in real world, and try to introduce random early detection and dynamic reservation into wireless environment. The performance of the call admission control schemes, in terms of the dropping ratio of handoff calls and the blocking ratio of new calls, is presented.