一种适用于无线多媒体传感器网络的节点不相交多路径路由协议

设计了一种适用于无线多媒体传感器网络的高效节点不相交多路径路由协议.以源路由的方式建立多路径,中间节点通过有选择的转发RREQs,降低路由建立开销.将链路质量量化为数据接收率,利用数据接收率、节点能量及路径跳数等,定义了路径效率模型,将路径效率模型引入到路由建立过程中.仿真结果表明,与SMR及TinyONDMR协议相比,新协议建立路由的开销更低,所建路径上节点能量分布更理想,进行数据传输时的能量效率更高,同时不会显著增加路径的传输时延.

A Novel Node-Disjoint Multipath Routing

A novel node-disjoint multipath routing protocol for wireless multimedia sensor networks was proposed in this paper. Multipath was established according to source routing approach, and the overhead of route establishment was minimized by selective forwarding RREQs at intermediate nodes. By quantifying link quality with packet reception rate (PPR), the model of path efficiency could be defined based on the PPR, energy of nodes and hop counts of path. Then the path efficiency was introduced into the process of route establishment. The simulation results indicated that, compared with SMR and TinyONDMR protocol, the overhead of route establishment of the new protocol was lower and energy distribution of node of path was better. At the same time the new protocol could cause a higher communications energy-efficient under the condition that no propagation delay was increased.