基于负载均衡的DSR路由协议改进*

动态源路由DSR路由协议以最短路径优先为原则,但是没考虑负载均衡,产生拥塞区域、连接失败等不利结果.为减轻路由负载,提高协议性能,提出了一种基于负载均衡的DSR路由算法.在路由发现过程中节点根据自身负载情况决定接收或丢弃请求分组,从而避开负载过高节点;中间节点采用不应答路由请求分组策略;目的节点根据路径总负载选择合适的...

Improvement of DSR routing protocol with load-balancing

DSR routing protocol uses only the shortest path metric for routing selection, but lacks load-balancing capabilities, and may result in some disadvantages such as creating congested area, breaking link. According to this problem, this paper presented an algorithm that was DSR routing protocol with load-balancing to improve networks capabilities. This scheme provided the way by which nodes accept or discard the route request packets (RREQ) on basis of their present load conditions. So that highly loaded nodes could be prevented by participating in the route discovery process or data transfer in order to minimize end-to-end delay and enhance, performance. This scheme prohibited the intermediate nodes from sending back route replies even if they had routes to the destination in their route caches. Meanwhile, the destination node calculated load of each path in order to select the best path for transmission, which was less loaded. This scheme could reflect not only the load of the intermediate nodes, but also the load of the path and the load distribution along the path, balancing the load over all nodes in the networks. It saved energy and bandwidth of the networks in the case of considering load-balancing mechanism in the routing protocols, which improved the networks capabilities.