IEEE 802.16 Mesh模式下区分服务时隙调度算法  

Diff-Service Minislot Scheduling Alogrithm in IEEE 802.16 Mesh Mode

作　　者：汪丽萍[1] 刘富强[1] 王新红[1] 是元吉[1] 

机构地区：[1]同济大学电子与信息工程学院,上海201804

出　　处：《计算机工程与应用》2006年第34期105-108,共4页Computer Engineering and Applications

基　　金：国家973重点基础研究发展规划资助项目(2004CB719802);科技部国际合作重点项目(2005DFA10100)。

摘　　要：为了满足用户需求,IEEE802.16支持多种QoS。在IEEE802.16-2004定义的mesh模式的调度机制下,针对实时业务和非实时业务对时延具有不同敏感性的特点,提出了一种区分服务的时隙调度算法。该算法优先处理实时业务,并通过拥塞情况,自适应地调整实时业务的预留带宽。最后对算法进行了仿真,结果表明该算法下业务的延迟、服务请求拒绝率、时隙利用率均有所改善。To meet the demands of subscribers,IEEE Standard 802.16-2004 provides QoS support to different traffic classes.Considering the fact that real-time service and non-real-time service have different delay-sensitivity,in this paper we propose a diff-service minislot scheduling algorithm under the scheduling mechanism defined in IEEE 802.16 Mesh mode.The algorithm processes real-time service with priority,and adjusts the number of minislots reserved for real-time service adaptively according to current network congestion.Finally the simulation results show that the average delay,service rejection rate and minislot utilization rate are improved.

关 键 词：IEEE 802.16:Mesh 协同分布式调度 区分服务 自适应 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]