摘要
无线信道干扰和负载分布不均匀严重影响无线网络的网络吞吐量、端到端延时等。在已有的路由度量的基础上,充分继承其通过邻居节点负载描述干扰强度的优势,进一步分析节点负载的影响,提出负载均衡的干扰感知路由度量,将干扰邻居节点的数量、负载和距离综合作用结果作为流间干扰强度,使用节点处的平均队列长度捕捉节点负载,并改进期望传输时间消除链路的不对称性,实现负载均衡和干扰感知,避开热点区域。同时将LBIA合并入路由协议。仿真结果表明:该路由度量可以有效地实现网络负载均衡,提升网络整体性能。
Wireless channel interference and uneven distribution of load affect network throughput and end-to-end delay in WMN. Based on ILA, LBIA is proposed. It inherits advantage of describing the extent of interference by the load of neighbor nodes and further analyzes the influence of the node load. The inter-flow interference extent is measured by the combined result of number, load of interfering neighbor nodes and the distance between nodes and neighbor nodes. The buffer queue length of the node is used to capture traffic load. The expected transmission time is improved to remove the asymmetry of the link. Eventually it can balance the load, be aware of interference and avoid the hot area. The simulation results show that the LBIA routing metric can effectively achieve load balancing and improve the whole network performance.
出处
《微型机与应用》
2015年第22期64-67,共4页
Microcomputer & Its Applications
