一种改进的I-NDMR协议在移动自组网中的应用

I-NDMR Protocol in Mobile Ad Hoc Network

为了降低NDMR协议中由于最短路径优先原则造成的冲突和阻塞问题,提出了一种改进型的I-NDMR协议。该协议共包含9个状态,选择通信负荷最低的链路作为传输路径。通过修改RREP数据包,为其增加LoadInformation数据段来记录每条路径的负载信息,同时目标节点还会定期发布LOAD_UPDATE报文来定期更新链路负载信息。尽管采用负载均衡策略后传输路径有一定延长,但改进后协议以一定控制开销为代价有效地缓解了网络瓶颈,提高了通信速率。测试结果证明,改进后协议数据传输通信延迟得到了有效降低。

To release the confliction and jam of Node-Disjoint Multipath Routing （NDMR） protocol, an improved Improved NDMR （I-NDMR） protocol is proposed. This protocol reduces the shared links betwen multiple sources and destinations, chooses the path with lowest load to send data packets. Load Information is recorded in RREP packet to evaluate transmission load and LOAD_UPDATE packet is broadcast periodically. Although the transmission path and the amount of control message may increase a little, the packet delay and network traffic can be released efficiently. Simulation results show that the I-NDMR can effectively enhance the performance of network.