WiMAX Mesh网络中一种分布式时隙分配算法  

Distributed scheduling minislot allocation algorithm on WiMAX Mesh mode

作　　者：张新有[1] 伸桂林[1] 

机构地区：[1]西南交通大学信息科学与技术学院,成都610031

出　　处：《计算机工程与应用》2015年第5期92-96,115,共6页Computer Engineering and Applications

基　　金：国家自然科学基金-联合资助基金项目(No.U0970122);中央高校基本科研业务费专项资金科技创新项目(No.SWJTU09CX040)

摘　　要：提出了一种基于资源预留的Wi MAX Mesh网络支持Qo S的微时隙动态分配算法。通过区分数据流优先级的方式将业务分为高优先级业务和低优先级业务两类,对高优先级的业务在每帧中预留一定的微时隙作为分配高优先级业务的时隙,预留时隙大小可以根据网络时隙使用状态动态地进行调整。仿真表明该算法在满足高优先级业务Qo S的同时兼顾业务的请求失败率与时隙的利用率,降低了分组的平均时延。A minislot allocation algorithm based on resource reservation is proposed for distributed scheduling on Wi MAX mode. The algorithm categorizes the service data into high-priority and low-priority groups. A proper number minislots are reserved in each frame for high-priority services. The size of the reserved minislot can be adjusted in real time according to the network congestion status. The advantages are that the Qo S of high-priority service data is guaranteed, the service failure rate and the minislot utilization rate can also be assured. The simulation results show that this algorithm has better performance in the minislot utilization rate and the delay compared with several known minislot reservation algorithms.

关 键 词：WIMAX MESH 服务质量(QoS) 协同分布式调度 MAC帧 微时隙 

分 类 号：TP393.2[自动化与计算机技术—计算机应用技术]