摘要： 无线传感器网络中的节点以簇的方式进行路由时，簇成员可使用单跳或多跳通信模式将感知数据包发送至簇头。该文以簇内成员节点的最大能耗作为评价指标，研究了单跳和多跳的能量有效性，得出了通信模式的选择取决于通道衰减系数的结论。考虑到单纯的单跳或多跳模式会引起网络能耗不均衡，提出了簇成员节点以一定概率在单跳和多跳间切换的混合通信模式。以典型的网络参数进行仿真，验证了混合通信模式在能量有效性和能耗均衡分配方面的优势。

关键词: 无线传感器网络, 单跳, 多跳, 混合模式, 能量有效性

Abstract: When nodes are organized as clusters, data packets can be transmitted from cluster members to head in either single hop or multi-hop communication mode. Using maximum energy dissipation of cluster members as evaluation criterion, this paper researches energy efficiency of these two modes. It comes to the conclusion that the optimal communication mode depends on channel path loss. Take the uneven energy consumption caused by solely single hop or multi-hop mode into consideration, a hybrid communication mode that nodes alternate between single hop and multi-hop mode with certain probability is proposed. The simulation result verifies that hybrid mode provides the best energy efficiency as well as even energy dissipation.

Key words: wireless sensor network, single hop, multi-hop, hybrid mode, energy efficiency

中图分类号: 

• TP212