一種改善IP網(wǎng)絡(luò)中基于類的數(shù)據(jù)服務(wù)QoS的調(diào)度方法
A Scheduling Algorithm for Improved QoS Support of Multiclass Data Service on IP Networks
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摘要: IP網(wǎng)絡(luò)中基于類的數(shù)據(jù)服務(wù)QoS支持一般包括包的延時、吞吐量和丟失率，目前的研究成果大都集中于對其中某一個指標的確?；蛑С帧Ｔ撐奶岢鲆环N在IP網(wǎng)絡(luò)中一個網(wǎng)絡(luò)路由器節(jié)點上同時考慮類間流量帶寬、包丟失和延時區(qū)分的隊列管理調(diào)度算法，稱為動態(tài)比例自適應(yīng)算法(Dynamic Proportional Adaptive Algorithm，DPAA)。該算法是針對比例區(qū)分服務(wù)PDS(Proportional Differentiated Services)中流量負載頻繁變化的情況提出的。仿真實驗通過與前人提出的基于比例區(qū)分服務(wù)模型的調(diào)度算法比較，證明了DPAA 算法的有效性。
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關(guān)鍵詞:
- 比例區(qū)分服務(wù);調(diào)度算法;服務(wù)質(zhì)量
Abstract: QoS supports of multiclass data service in IP network includes generally packet delay, throughput and loss rate, while the majority last research focus on either minimizing packet delay and loss or maximizing user throughput. In this paper, an algorithm DPAA (Dynamic Proportional Adaptive Algorithm) for assuring the difference service under traffic vary-time condition in Proportional Differentiated Services(PDS) model is proposed. The scheme takes into account the throughput, delay and loss rate of packets between classes simultaneously. Simulation indicates that the DPAA has a good performance compared to the previous works. -
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