基于動(dòng)態(tài)信道預(yù)約的自適應(yīng)QoS切換算法
Dynamic Channel Reservation Based Adaptive QoS Handoff Algorithm
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摘要: 未來無線網(wǎng)絡(luò)將為固定和移動(dòng)用戶提供多媒體通信和計(jì)算業(yè)務(wù).為移動(dòng)用戶提供無線多媒體業(yè)務(wù)的一個(gè)最關(guān)鍵的挑戰(zhàn)是保證端到端連接的業(yè)務(wù)質(zhì)量.通過重復(fù)使用無線頻譜的微蜂窩或微微蜂窩結(jié)構(gòu)是一個(gè)有前途的改善移動(dòng)多媒體網(wǎng)絡(luò)容量的方式.但切換次數(shù)隨著蜂窩大小的降低而增加.移動(dòng)多媒體網(wǎng)絡(luò)的一個(gè)至關(guān)重要的問題是需要可以滿足各種QoS需要且有更高資源利用率的有效切換方式.該文提出了一種稱為基于動(dòng)態(tài)信道預(yù)約的自適應(yīng)QoS切換算法,并與其它切換方式進(jìn)行了性能比較.
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關(guān)鍵詞:
- 無線多媒體;動(dòng)態(tài)信道預(yù)約;自適應(yīng);QoS;切換
Abstract: Future wireless networks promise multimedia communication and computing services for both fixed and mobile users. One of the most important challenges of wireless multimedia service for mobile users is maintaining a guaranteed quality of service over end-to-end connections. The use of micro/pico-cellular architectures is one of the promising ways to improve the capacity of mobile multimedia networks with reuse of the scarce radio spectrum. However, the handoff rate is increased with decrease of the cell size. An efficient handoff supporting which can satisfy various QoS requirements and give high resource utilization is one of the critical issues for mobile multimedia networks. In this paper, a handoff scheme that called dynamic channel reservation based adaptive quality of service handoff algorithm is introduced. Performance comparisons are made to the performance of other handoff schemes. -
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