基于无线传感器网络的局域世界动态演化模型

在传感器网络中,传感器节点本身的通信能量与功率有限,传感器节点仅与其邻域中的相邻节点进行合作与通信,这说明网络中演化过程符合局域演化概念。从无线传感器网络局域演化角度出发,综合考虑传感器网络中节点能量感知连接机制以及节点和链路有增有减的动态过程,提出了一种能量感知的局域世界动态演化模型。利用平均场理论分析并仿真验证了该模型的度分布介于随机网络和无标度网络之间。同时,通过仿真实验研究了所提模型的网络直径和网络能效与局域世界规模的关系,实验结果表明适当增加节点的局域世界可以大大提高网络数据传输的高效性。

Local-World Dynamic Evolving Network Model for Wireless Sensor Network

Due to the finite energy and power of sensor nodes in WSN,they usually only communicate with their neighbor node,which shows that the evolution of the wireless sensor network conforms to the concept of local-world connectivity.Hence,from the perspective of local-world evolution,this paper proposes a local-world evolving network model with energy-awareness for WSN,which considers the energy-awareness mechanism and the dynamic process with addition and deletion of node and link.Both theoretical analysis and simulation experiments show that the degree distribution of the proposed model lies between the ones of the random network and the network without scaling.Moreover,numerical simulations are conducted for investigating how different local-world scale affects network diameter and efficiency,which shows that by suitable increasing the local-world scale,the efficiency of data transmission may be greatly improved.