非均匀数据产生率的传感器网络的节能算法

摘要

In wireless sensor networks (WSNs), energy hole problem is a key factor for affecting the lifetime of networks. In a circular multi-hop sensor network (modeled as concentric coronas ), the optimal transmission ranges of all coronas can effectively improve system lifetime. For the WSN with non-uniform data generating rate, an energy-efficient algorithm for non-uniform data generating rate (EANR) can search approximate optimal transmission ranges of all coronas in order to prolong network lifetime by constructing coronas relationship table. EANR can reduce the searching complexity and get results approximated to the optimal solution. The simulation results indicate that the lifetime got from E. ANR approximates to the lifetime from the optimal list. Compared with the algorithms in other literatures, EANR can prolong the network lifetime.%无线传感器网络中的能量洞问题是影响网络寿命的关键因素之一.在基于环模型的多跳传感器网络中,通过优化所有环的传输距离可以有效地延长网络寿命.针对非均匀数据产生率的传感器网络,用建立环关系表的方式以搜索近似最优的传输距离从而延长网络寿命,在降低搜索(算法)复杂度的同时得到与最优解近似的结果.模拟实验证明了采用此节能算法的网络寿命逼近于理想最优序列下的网络生命时间,并且与已有的文献算法相比,可以延长网络寿命.