论文部分内容阅读
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 of wireless mesh networks, an abstract model of link redundancy in multi-interface mesh networks is proposed, which abstracts multiple RF interfaces into a logical interface and uses the OLSR routing protocol to establish a connection at the network layer , The adjacent nodes automatically establish a data link at the link layer, assign different types of datagrams to different links for transmission, reduce the delay of data packet transmission caused by frequent broadcast control packets, and improve network throughput; Static channel allocation strategy to improve channel utilization.Finally, the link redundancy abstract model is combined with OLSR routing protocol to test the performance of the multi-interface and multi-channel wireless mesh network with dual 802.11b wireless network card on each node, The experimental results show that it can effectively improve the overall throughput of the mesh network and reduce the end-to-end delay.