中文摘要：

针对无线传感器网络体积小与能量受限的特点，该文提出了一种新的传输机制-RNTA算法，即将无线传感器网络中的部分冗余节点组成中继树，并利用该树作为网络内信息传输的代理，完成了信息从簇头到基站的传输，达到了节省正常节点和簇头能量的目的。仿真结果表明：该机制可以有效提高网络的生命周期。

英文摘要：

To enhance the entire network lifetime of wireless sensor network, this paper puts forward a new transmission mechanism by redundant nodes basing on the characters that the sensor nodes are tiny and energy-limited. The method builds an redundant nodes tree as the transmission agents to realize the information exchange between the clusters and base-station so that the energy consumption of normal nodes and clusters＇ heads can be decreased. The simulation results show that the mechanism can improve the lifetime of effective wireless sensor nodes largely under the condition that the nodes are relative dense and the redundant nodes exist.