This paper focuses on the communication aspect to present a protocol for WSN to improve energy efficiency and lifetime. It is called an energy-efficient double rounds clustering protocol for WSN based on the main and auxiliary cluster head (DRMACP). It improves the LEACH protocol as follows: In the cluster head selection, the algorithm introduces main and auxiliary cluster head selection mechanism, they undertake information acquisition , fusion and forwarding between clusters, thus it can effectively reduce energy losses for a single cluster head. In the clustering phase, vice head determines how many nodes it can accommodate according to the distance of base station and itself, it can avoid adding burden of the nodes in the uneven density case. At the same time, it uses double rounds clustering to save communication loss of one round per cluster head selection. In the network environment where the node density is undistributed, The results show that it improves the energy performance of network by 33% ~52% .%为了延长无线传感器网络的生存周期,提出了一种基于主副簇首的WSN双轮成簇协议(DRMACP).在簇首选择上,该算法引入主副簇首选择机制,分别承担域内信息的采集、融合和簇间的转发工作,避免了单一簇首机制下的过多簇首能量损耗,均衡了网络负载.在成簇阶段,副簇首根据节点与基站距离的远近确定可容纳的节点个数,避免了因节点密度不均导致靠近基站簇首负担加重的可能.同时,采用双轮成簇机制,节省了因每一轮簇首选择造成的通信损耗.仿真结果表明,在节点密度分布不均衡的网络环境下,与经典LEACH、HEED协议相比,DRMACP协议可提高网络能效达33％～52％.
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