无线多媒体Mesh网络容量感知路由优化研究  

Research on capacity-aware routing optimization for wireless multimedia mesh network

作　　者：赵海涛[1] 朱洪波[1,2] 刘南杰[1] 张晖[1,3] 

机构地区：[1]南京邮电大学通信与信息工程学院,南京210003 [2]南京邮电大学物联网科技园,南京210003 [3]东南大学移动通信国家重点实验室,南京210096

出　　处：《仪器仪表学报》2013年第6期1201-1208,共8页Chinese Journal of Scientific Instrument

基　　金：国家自然科学基金(61001077;61101105;61201162);江苏省基础研究计划-重点研究专项基金(BK2011027;BK2012434);江苏省高校自然科学研究基金(12KJB510022;12KJB510020);南京邮电大学引进人才科研启动基金(NY211007;NY211036);中国博士后研究基金(sdh12007);教育部博士点基金(20123223120001)资助项目

摘　　要：为了实现无线多媒体在高负载率业务下的资源预测和QoS优化,首先利用概率预测的容量感知模型探测MAC层的重传信息,动态感知无线链路的状态,实现高负载业务下的统计的信道容量概率预测。其次,利用跨层设计技术,基于链路状态和节点干扰的容量预测模型,提出一种基于位置的容量感知路由优化算法LCAR,实现统计的QoS网络资源预留以及分组转发,提高网络资源利用率。仿真结果表明,与现有的QoS路由优化方法相比,提出的算法可以降低无线网络的重传次数平均1～2次,提高无线网络的分组转发效率10%,平均改善网络的吞吐容量10%。To provide resource prediction and statistical quality-of-service （QoS） guarantee under a high traffic load for wireless multimedia mesh network, the scheme proposed in this paper firstly perceives the environment of wireless channels through detecting the retransmission information of MAC layer with probability predicted capacity aware model, dynamically perceives the state of the wireless links and predicts the statistical wireless channel capacity, es- pecially the capacity with the saturated traffic load. Then, using the cross-layer design approach, a location-based ca- pacity-aware routing （LCAR） optimization algorithm is proposed based on the link state and capacity prediction mod- el of node interference. Further, the proposed scheme can realize statistical QoS resource reservation and packet for- warding, and improve the network resource utilization rate. The simulation results show that compared with existing QoS cross-layer routing optimization schemes, the proposed scheme can reduce the number of retransmissions of the wireless network by 1 -2 times, achieves more accurate capacity prediction and higher resource utilization;the packet forwarding efficiency of the wireless network is improved by 10% , and the network goodput is improved by 10% in average

关 键 词：无线多媒体mesh网络 容量预测 环境感知 QOS路由 

分 类 号：TN925[电子电信—通信与信息系统]