无线传感器网络RPL路由协议优化

ue to the link of wireless sensor network is not stable, topology change frequently, nodes resource-constrained characteristics, the existing routing protocols can't better apply for it, so RoLL working group of IETF proposed IPv6 Routing protocols for low-power Lossy Networks - RPL (Routing Protocol for Low - power and Lossy Networks). In the face of rapid data traffic, network traffic surges and unstable link will bring grievous network congestion and packet lost to the limited bandwidth of wireless sensor network. So,in this paper, on the basis of single path RPL,I propose the improvement strategy of winding multipath and according to the weight to do the load balancing optimization. In the end, through COOJA simulation tool for simulation and analysis, verifying the optimized RPL in the face of rapid data traffic and lossy link can effectively alleviate the network congestion and reduce the packet loss.)