机会网络中基于移动特征的效用转发协议*

针对非社区网络中的主流转发协议未考虑到节点移动的非完全随机性,提出一种基于移动特征的效用转发协议。每个节点关联两个移动特征——活跃度和相似度,依靠活跃节点带动消息的适当发散和递交,并通过相似度的判定和效用值的比较降低网络开销。仿真结果表明,该协议在保持相对平稳的端到端延时的情况下,可以提高消息递交率,降低网络资源消耗。

Utility forwarding protocol based on mobile characteristic for opportunistic networks

For forwarding protocol in no-community networks does not consider the non-totally random node mobility, this paper presented an utility forwarding protocol based on mobile characteristic (BMCU).It described the node characteristic during moving by similarity and activity. In order to complete appropriate divergence and submission of message, it used the more active nodes to get copy of message from the sender. It suppressed divergence of the copies by similarity and utility comparison. Simulation results show that BMCU can get higher delivery ratio, also improve the routing efficiency with relatively stable delay and lower energy consumption.