无线传感器网络中基于无标度特性的拓扑控制算法

针对无线传感器网络中的无标度特性中的抗毁和容错能力差问题进行了研究,提出了一种改进的无标度网络拓扑控制算法(BA Evolution Model,BAEM).通过分析幂率指数对网络容错和拓扑抗毁性的影响,得出在兼顾拓扑容错性的同时最大化网络抗毁性的最优网络拓扑.仿真实验结果表明:改进后的容错拓扑可以保持无标度网络模型对随机故障较强的鲁棒性,同时可以改善无标度网络对蓄意攻击的脆弱性,并延长了网络生命周期.

Topology Control Algorithm Based on Scale-Free Property in Wireless Sensor Networks

The issue that the WSNs are vulnerable with deliberate attacks is studied,and a new scale-free network e-volution model( BAEM) is proposed. And then through analyzing the effect of the power-law exponent on network in-trusion-tolerance and topology fault-tolerance,the optimal topology is derived which can assure the topology fault-tol-erance and maximize topology intrusion-tolerance. The simulation results show that new fault-tolerant topology can keep the character that the scale-free network model has stronger robustness to random failures,and it also can re-duce their fragility against intentional attacks and provide longer network lifetime.