摘要
在无线Mesh网络中,绝大部分数据都是通过网关与外网进行交互,随着网络中数据传输量的增加,单网关很容易达到传输瓶颈,从而导致网络的整体性能下降.本文对802.11s中规定的混合无线Mesh路由协议HWMP(Hybrid Wireless Mesh Protocol)进行改进,提出了具有负载均衡功能的多网关路由协议LBM P_HWM P.通过在M esh管理帧中添加路径负载信息位,用于表示当前路径的节点拥塞情况,节点在选择网关传输数据的时候综合考虑链路质量与路径中节点的拥塞情况,从而均衡整个网络的负载,避免拥塞发生.仿真实验表明,LBMP_HWMP能够很好地保持整个网络的负载均衡,降低端到端的传输时延,提高网络的整体性能.
Since all incoming and outgoing traffic goes through the gateway in WMN, single gateway achieves transimission bottleneck easily, according to the situation, this paper propose multiple portal routing protocol with load balance named LBMP_HWMP and improve the performance in WMN. To make nodes know the current path load to the gateway,Pathload is added to the 802. 1 ls management frames. Link quality and Pathload are taked into account when nodes select the gateway. The simulation results show that LBMP _HWMP can effectively balance the load of network and improve the overall performance of the network.
出处
《小型微型计算机系统》
CSCD
北大核心
2014年第12期2608-2611,共4页
Journal of Chinese Computer Systems
基金
国家自然基金重点项目(61139002)资助
