无线区域网中保障QoS的多业务调度算法  

QoS Guaranteed Multi-business Schedule Algorithm in Wireless Regional Area Network

作　　者：冯文江[1] 张智中[1] 蒋卫恒[1] 

机构地区：[1]重庆大学通信工程学院,重庆400030

出　　处：《计算机工程》2011年第18期109-111,114,共4页Computer Engineering

基　　金：国家自然科学基金资助项目(60872038);国家"211工程"三期建设基金资助项目(S-09102);重庆市自然科学基金资助重点项目(CSTC2009BA2064)

摘　　要：针对无线区域网中多业务资源分配和调度问题,基于认知无线电的特点提出一种改进的调度算法。该算法通过计算单用户不同业务的QoS优先级,并兼顾多用户之间的公平性选择业务传输的最优信道,在传输过程中采用节点中断管理方式动态修正业务的QoS优先级。仿真结果表明,该算法能有效利用网络带宽,并且能保障单用户业务的QoS要求和多用户调度的公平性。This paper studies the multi-traffic resource allocation and schedule strategy in Wireless Regional Access Network（WRAN）.Based on the features of Cognitive Radio（CR）,an improved multi-traffic schedule algorithm is proposed.Through calculating the priority of different traffic Quality of Service（QoS） requirements in single user,at the same time,considering the schedule fairness between multi-users,the proposed algorithm selects the optimal channel of traffic schedule for users and dynamic adjusts the QoS priority by use of outage management in transmissions.Simulation results show that the algorithm can guarantee multi-traffic QoS requirements for single users and fairness between multi-users,while utilizing the bandwidth effectively.

关 键 词：认知无线电 无线区域网 业务调度 服务质量 公平性 

分 类 号：TN929.5[电子电信—通信与信息系统]