多接口多信道无线Mesh网络动态信道分配中的路由协议研究

Research on Routing Protocol of Dynamic Channel Allocation in Multi-radio Multi-channel Wireless Mesh Network

信道分配和路由协议是无线Mesh网络(WMN)关键技术,合理分配信道和制定路由协议能有效提升WMN性能。为了使路由开销最小化和网络吞吐量最大化,针对多接口多信道WMN的动态信道分配,提出一种多路径路由协议。WMN在通信过程中所创建的流内信道和流外信道会产生干扰。该协议能维护和建立切换频繁的多信道通信,且将数据流分割成多条路径,以避免流内干扰和流外干扰。利用NS2工具对所提出的协议进行路由性能评估。实验结果表明,该协议能够在路由开销、吞吐量等方面达到较好的效果。

Channel allocation and routing protocol are key technologies of wireless mesh network（WMN）Reasonable allocating channels and constituting routing protocols can effectively improve the performance of WMN. In order to minimize the routing overhead and maximize the network throughput, proposes a multipath routing protocol for in dynamic channel allocation of multi-radio multi-channel WMN. Inter-flow and intra-flow channels created by WMN during communication can cause interference. The proposed protocol can maintain and establish multichannel communications which are changing frequently and data flow is separated into multipath to avoid inter-flow and intra-flow interference. The routing performance of the proposed protocol is evaluated using NS2 tools. Experimental results show that the proposed protocol can achieve better effects on routing overhead and throughput.