摘要： 在传感器网络技术应用的民用领域中，采集信息的传感器节点位置固定，并且有些距离汇聚节点太远，需要加入中继节点转发数据。一些中继节点由于承担了过多的数据量而过早耗尽能量，影响了网络的生存周期。该文针对该种情况，提出了一种实现各节点能量均衡消耗的中继节点多级摆放策略，研究了如何通过调整中继节点的摆放位置和转发数据量，使传感器节点和中继节点在每一轮的数据传输中消耗相同的能量。基于该策略，还研究了中继节点数目与网络生存周期之间的关系，为延长网络生命周期和减小中继节点数目的折中提供了一种参考。

关键词: 无线传感器网络, 能量均衡消耗, 多级摆放策略

Abstract: In some civilian applications of wireless sensor networks, the sensing nodes is so far away from base station that relaying nodes must be employed to forward data. Some relaying nodes use up their power early because they have heavier traffic load, which affects the network lifetime. This paper proposes the multi-phase placement strategy of relaying nodes, which implements an even energy consumption distribution among different nodes. Sensing nodes and relaying nodes consume the same power in every round of data transmission by adjusting location and data volume. Based on the strategy, this paper finds numerical relationship between the number of relaying nodes and network lifetime, offers a reference for the trade-off between increasing network lifetime and decreasing the number of relaying nodes.

Key words: wireless sensor network, even energy consumption, multi-phase placement strategy

中图分类号: 

• TP393