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,研究单簇头情形下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,并给出了混合通信模式的工程实现方法。仿真结果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。
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, energy efficiency of these two modes is researched. The conclusion was come to that the optimal communication mode depends on channel path loss. Taking 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.
出处
《电子与信息学报》
EI
CSCD
北大核心
2007年第9期2262-2264,共3页
Journal of Electronics & Information Technology
基金
陕西省自然科学基金(2005F22)资助课题
关键词
无线传感器网络
单跳
多跳
混合模式
能量有效性
Wireless sensor network
Single hop
Multi-hop
Hybrid mode
Energy efficiency
