Abstract: In wireless sensor networks, nodes closer to the base station are prone to die because of excessive flow, resulting in “hot spot” problem. This paper is based on ring belt model, through adding nodes to balance energy consumption among rings, which can reduce “hot spot” problem and efficiently prolong network lifetime. Moreover, the ring belt model can ensure minimum number of nodes for entire and seamless coverage.

Key words: wireless sensor networks, “hot spot” problem, ring belt model, energy consumption balancing, extra nodes

摘要： 在无线传感器网络中，邻近基站的节点由于承载过多的数据量而过早死亡，从而引发“热点”问题。该文讨论了在一般的环带模型中，通过增加一定的节点个数来均衡各环之间的能耗，以减轻“热点”问题，从而有效延长网络生存时间，所提出的模型可以保证传感器区域实现完全无缝覆盖时，所需要的节点个数最少。

关键词: 无线传感器网络, “热点”问题, 环带模型, 能耗均衡, 额外节点

CLC Number: 

• TP393.02