Generally, the Cluster-Tree algorithm and the AODVjr algorithm are used for routing strategies at ZigBee network layer. The former is simple, but its efficiency is low. The latter one can complement the cluster-tree routing's shortcomings. However, the energy consumption and network life are not considered adequately for energy-limited networks. This paper proposes an improved measure, which can deduce the node energy consumption and prolong the network life as far as possible, in order to avoid the premature segmentation of networks. Experiments show that this algorithm can efficiently improve the node's average life in energy limited networks, without reducing the network performance.
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