多接口mesh网络下链路冗余模型的研究  

Research on Link Redundancy Abstract Model for Multi-radio Mesh Network

作　　者：钟辉[1] 郎冰[1] 

机构地区：[1]沈阳建筑大学信息与控制工程学院,沈阳110168

出　　处：《小型微型计算机系统》2015年第6期1255-1260,共6页Journal of Chinese Computer Systems

基　　金：中华人民共和国住房和城乡建设部项目(2008-48-28)资助

摘　　要：为了提高无线mesh网络吞吐量问题,提出一种在多接口mesh网络中的链路冗余抽象模型.该模型将多个射频接口抽象成一个逻辑接口,使用OLSR路由协议在网络层建立连接的同时,邻节点之间在链路层自动建立一条数据链路,将不同类型的数据报分配到不同的链路上传输,降低频繁广播控制包而引起的数据包传输延迟,提高网络吞吐量;实现静态信道分配策略,提高信道利用率.最后,将链路冗余抽象模型与OLSR路由协议相结合,在每个节点装有双802.11b无线网卡的多接口多信道无线mesh网络实验床上测试性能,实验结果表明其能够有效的提高mesh网络的整体吞吐量和降低端到端的延迟.In order to improve the throughput for wireless mesh network, this paper presents a link redundancy abstract model in Multi- radio Multi-channel mesh network. The model abstracts multi radios into a logical radio and establishes a connection in link layer while OLSR routing protocol establishing a connection in network layer. After that the model distributes different kinds of datagram into dif- ferent link to transfer,so it can reduce transmission delay of data packet cased by control packet broadcasting and improve the through- put. The static channel allocation strategy improves channel utilization. Finally,combine the link redundancy abstract model and OLSR routing protocol to test performance in Multi-radio Multi-channel test bed with dual 802. 11 b wireless network cards. The experiment result shows that the abstract model can effectively improve throughput and reduce end to end delay for mesh network.

关 键 词：多接口 多信道 无线MESH网络 多接口链路冗余模型 实验床 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]