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针对MANET环境中密度驱动的发布/订阅路由算法在相邻Hill间转发消息过程中存在较大时延和冗余控制开销问题,提出一种消息侦听的高效快速发布/订阅路由算法(FEPML).该算法通过边缘节点侦听机制,快速构建相邻Hill之间的双向传输路径,提高内容匹配的效率;利用心跳消息转发时的捎带信息,避免向边缘状态的Hill转发消息,减少绕路;同时压缩消息头部字段,减少冗余开销.仿真结果显示:与现有的典型相关算法相比,FEPML可以有效地降低数据传输开销,快速实现发布消息和订阅节点的匹配,降低平均端到端时延.
In order to solve the problem of large delay and redundant control overhead in density-driven publish / subscribe routing algorithm in MANET environment, an efficient fast publish / subscribe routing algorithm (FEPML) for message snooping is proposed. In this algorithm, the edge node snooping mechanism is used to quickly construct bidirectional transmission paths between adjacent hills and improve the efficiency of content matching. By using piggybacked information during heartbeat message forwarding, the algorithm avoids forwarding messages to Hill in the edge state and reduces detours. While reducing the header field of the message to reduce the redundant overhead.The simulation results show that FEPML can effectively reduce the data transmission overhead and achieve the matching of publish messages and subscribing nodes quickly compared with the existing typical correlation algorithms and reduce the average end-to-end Delay.