基于连接质量和节点相关度的机会网络路由

Opportunistic network routing based on link quality and nodes similarity

提出利用连接质量估计节点间消息成功转发的概率,并证明了节点间相关度越高,消息转发率越高。在此基础上,提出基于连接质量和节点相关度的机会网络路由机制。路由计算节点转发效用值时,综合了连接质量和节点相关度;消息转发时,不断向相对于目的节点转发效用值高的节点转发消息。仿真结果表明,与传统路由相比,在消息送达率相同的前提下,该路由消息延迟更小、消耗的总能量更少。

A new concept called link quality is used to estimate the delivery probability between nodes. It is also proved that the higher the node similarity is, the higher the messages forwarding rate becomes. And then, the opportunistic network routing based on Link Quality and Nodes Similarity（LQ-NS） is proposed, and the message delivery utility is calculated with LQ-NS. The messages are continually forwarded to the nodes with higher utility relative to the destination nodes. Simulation results show that the LQ-NS routing has significantly reduced the message delay and total energy consumption compared to traditional Epidemic and Probabilistic Routing Protocol using History of Encounters and Transitivity（PRoPHET）.