Abstract: Considering the unbalanced energy consumption and the premature death of the nodes in wireless sensor network (WSN),this paper presentsed an energy-level based clustering algorithm (ELBC) and a multi-hop algorithm (M-ELBC)．By defining the concept of the energy-level and considering the location of the sink,the algorithms dynamically adjust the proportion of factors to ensure the reasonable distribution of the clusters and balance the energy consumption．By optimizing the preference parameter based on the nodes’ residual energy,the algorithms improve the high energy nodes’ competitiveness to delay the appearance of the first dead node．Experimental results show that the ELBC and M-ELBC algorithms can put off the appearance of the dead nodes,balance the nodes’ energy consumption and prolong the network lifetime．

Key words: Clustering topology control,EBAPC algorithm,ELBC algorithm,M-ELBC algorithm