一种基于QoS的无线分组调度算法  

A QoS-Based Packet Scheduling Algorithm in Wireless Networks

作　　者：赵越[1] 罗晓华[1] 杨鹏[1] 王光兴[1] 

机构地区：[1]东北大学信息科学与工程学院,辽宁沈阳110004

出　　处：《东北大学学报（自然科学版）》2006年第3期272-275,共4页Journal of Northeastern University(Natural Science)

基　　金：国家高技术研究发展计划项目(2004AA712032)

摘　　要：提出了一种适用于无线网络的分组调度算法动态概率优先级(DynamicProbabilistic Priority,DPP)调度算法.DPP调度算法采用动态的优先级分配策略,满足了不同业务的QoS需求.另外,DPP算法在网络出现差错时,动态地调整带宽分配,使得网络中的带宽得到有效的利用,提高了系统的吞吐量,保证了算法的公平性.理论分析和仿真试验表明,在无线网络环境中,该算法具有更好的性能.Proposes a packet scheduling algorithm adaptable to wireless networks, i.e., the Dynamic Probabilistic Priority （DPP）. Introducing the dynamic priority dispatching strategy, the DPP algorithm can meet different requirements of QoS. In addition, if errors occur in wireless networks, the algorithm can dynamically assign bandwidths to make full use of them. It will not only improve the throughput of system, but also ensure algorithm＇s fairness. Both theoretical analysis and simulating test indicate that DPP algorithm works better in wireless networks.

关 键 词：QOS(服务质量) 分组调度 DPP(动态概率优先级) 无线网络 区分服务 

分 类 号：TP393.01[自动化与计算机技术—计算机应用技术]