基于最小跳数的跨层MAC（MHC-MAC）协议*

摘要

As different layers of protocol stack in existing WSN (Wireless Sensor Networks) focus different metrics without interactions between different layers and information sharing, resulting in limited network lifetime, a cross-layer MAC (MHC) protocol based on the minimum hops has been proposed in this paper to solve the“pressed wake-up" problem of the non-communication nodes. To tackle routing selection, MHC protocol sets a search angle competition coefficient in the election forward so that energy changed nodes broadcast their information just to the valuable neighbor nodes. Simulation results show that the proposed protocol has reduced network energy consumption as well as achieved good performance in improving the network lifetime.%　　针对已有无线传感器网络中协议栈各层往往只关心不同的性能指标，缺乏层间交互和信息共享，以及网络生存时间有限的缺点，提出了一种基于最小跳数的跨层MAC协议，解决了非通信节点的“强迫唤醒”问题，并在转发选举时采用设定搜索角度的竞争系数，让能量有变化的节点只需向有价值的邻居节点广播自己的信息，解决路由选择问题。仿真结果表明，该方案在降低网络能耗的同时可延长网络寿命。