不完备安全链接对WSNs网络寿命的影响

Effects of incomplete secure connectivity on performance of network lifetime in wireless sensor network

由于无线传感节点内节点的存储容量受限,只能为部分节点间实现不完备的安全链接网络。为此,针对不完备的安全链接环境,提出基于线性规划的量化网络寿命分析模型LPQNL(linear programming-based quantifies network lifetime of wireless sensor network analyzed model),讨论密钥共享概率对网络寿命、队列长度、路径长度和能量消耗的影响。仿真结果表明,任意两节点间密钥共享概率不小于0.3时的网络寿命比完备安全链接(密钥共享概率为1)的网络寿命仅有不到3.0%的下降。

Key pre-distribution schemes accommodate secure connectivity by establishing pairwise keys between nodes.However,ensuring security for all communication links of a wireless sensor network(WSN)is nontrivial due to the memory limitations of the nodes,and only establishing not fully connected secure network.Therefore,studying the problem of not having a fully connec-ted secure network,linear programming-based quantifies network lifetime of wireless sensor network analyzed model(LPQNL)was proposed.LPQNL quantified network lifetime,and explored the incomplete secure connectivity problem with respect to its impact on network lifetime,path length,queue size,and energy dissipation.The numerical results show that if any two nodes share a key with a probability of at least 0.3,then only a marginal drop(i.e.,less than 3.0%)in lifetime emerges as compared to a fully connected network.