在寬頻行動無線網路下對多層級頻寬保留機制之效能評估

Performance Evaluation of Multi-Guard Channel Schemes in Broadband Mobile Networks

申慶堯(Ching-Yao Shen)

指導教授 ： 黃依賢

元智大學/資訊學院/資訊工程學系/碩士(2008年)

https://doi.org/10.6838/YZU.2008.00213

摘要

本論文提出兩種基於二維馬可夫鏈的數學分析模型，針對提出的兩種多層級頻寬保留機制作效能評估，並且比較兩者之間的差異。而此篇論文的另一貢獻是針對多層級和多重傳輸服務的特性提出兩種多層級頻寬保留機制。所提出的多層級頻寬保留機制之目的是為了在多媒體無線網路下保證服務品質，並根據目前網路流量狀況和數據分析結果對多層級頻寬保留機制的界限值作動態調整以改善dropping probability 和 blocking probability。數據分析結果顯示在所提出的兩種數學分析模型中，採用第二種多層級頻寬保留機制可以得到較好的 call dropping probability 和 call blocking probability。

關鍵字

優先權導向之連線允許控制機制 ； 多層級頻寬保留 ； 多重傳輸服務 ； 寬頻行動無線網路

並列摘要

In this paper, we develop two generalized analytical models which were basic on two-dimensional Markov chain model to investigate the performance of two proposed scheme and compared them with each other. Another contribution of this paper is to propose two Multi-Guard Channel Schemes (MGCS) for multi-threshold and multi-rate services. The purpose of MGCS is proposed to guarantee the quality of service for multimedia wireless cellular networks. We can adaptively adjust the threshold of MGCS according to the current network traffic situation and QoS status, and performance measurements can help for improving the blocking and dropping probabilities. The analytical results show that MGCS 2 achieves better results on the call dropping probability and call blocking probability.

並列關鍵字

Priority based CAC schemes ； Multi-guard channel ； Multi-rate services ； Broadband mobile networks

參考文獻

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