基于非均匀分簇的HWSN密钥预分配方案的研究

Research on Key Pre-distribution Scheme for Heterogeneous Wireless Sensor Networks Based on Unequal Clustering

密钥管理问题一直是无线传感器网络中的热点研究问题之一。针对传统的密钥预分配方案具有能量不均衡以及网络生存周期短的问题,文中设计了一种新的基于分簇结构的异构传感器网络的密钥预分配方案(New Clustering In Key Pre-distribution,NCIKP)。详细给出了簇首选择过程、非均匀分簇过程以及密钥预分配过程,在选择簇首时将同时考虑节点的能量消耗率、节点到基站的距离以及节点的邻接程度。通过仿真实验与分析,相较其他的密钥预分配方案,此方案较好地满足了异构传感器网络的安全和能耗需求。

The key management is always one of hot topics in wireless sensor network. For many traditional key pre- distribution scheme with energy imbalance and network short lifetime problem,a new cluster- based key pre- distribution scheme（ New Clustering in Key Pre- distribution,NCIKP） for Heterogeneous Wireless Sensor Networks（ HWSN） is proposed. The cluster head selection process,unequal clustering process and key pre- distribution process are given in detail. In the selection of cluster head,also consider node energy consumption rate,node distance to the base station and node adjacency degree. According to the simulation experiment,compared with other key pre- distribution scheme,it＇s better to meet the security and consumption demand for HWSN.