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媒体访问控制(MAC)协议是无线传感器网络的关键协议之一,它对无线传感网络的运行和性能具有重要的影响。针对基于簇的TDMA机制存在问题,文中提出了一个动态节能的DE-MAC协议,该协议能够根据簇成员节点数目和通信负载动态地分配成员节点的时隙,减少节点的空闲侦听时间。仿真结果表明,DE-MAC协议能够有效地提高信道的利用率和网络能量有效性。
Media Access Control (MAC) protocol is one of the key protocols in wireless sensor network. It has an important impact on the operation and performance of wireless sensor networks. Aiming at the problem of cluster-based TDMA mechanism, a dynamic energy-saving DE-MAC protocol is proposed in this paper. It can dynamically allocate time slots of member nodes according to the number of cluster members and communication load, and reduce idle listening time of nodes. Simulation results show that the DE-MAC protocol can effectively improve the channel utilization and network energy efficiency.