基于认知的多信道无线mesh网络路由协议研究

Cognitive Radio Based Routing Protocol for Multi-channel Wireless Mesh Networks

在多信道无线mesh网络中,路由选择与频谱可用性之间的相互依赖性很强,这就要求设计路由协议时要充分考虑信道的选择。传统的路由协议不能很好地适用于多信道无线mesh网络,因此提出了一种基于认知无线电的无线mesh网络路由协议,其中每个节点配置两个网络接口,路由选择与信道选择同时进行,通过冲突避免的设计,充分利用了多信道的优势。仿真结果表明,相对于传统路由协议,提出的路由协议能大大提高网络的吞吐量。

In multi-channel wireless mesh network,there is tight inter-dependence between route selection and availabi-lity of spectrum,so selection of channel is required to be fully considered when designing routing protocol.Traditional routing protocol can＇t be well applied to cognitive radio network.The proposed routing protocol,in which each node is equipped with dual network interface,achieves routing selection and channel selection simultaneously,and takes advantage of multiple channels with collision avoidance design.Simulation shows that the proposed protocol,compared to traditional routing protocol,can significantly improve throughput of the network.