关键词: 无线传感网络, 加权网络, 局域世界, 动态演化

Abstract: Many real networks included Wireless Sensor Networks (WSN) can be considered as scale-free weighted networks which reflect their existing forms and dynamic characteristics.Based on local-world theory,we propose an uneven clustering weighted evolving model of WSN in this paper.The definitions of edge weight and vertex strength take sensor energy,communication traffic and distance into consideration.Vertex strength drives the growth of topology and edge weight dynamically changes correspondingly.Experimental results demonstrate that WSN topology we obtain has the property of weighted networks:edge weight,vertex degree and strength follow a power law distribution.Related research work show that weighted WSN not only share the robustness and fault tolerance of weight-free networks,but also reduce the happening probability of successive node-breakdown,furthermore,enhance the synchronization of WSN.

Key words: wireless sensor networks, weighted networks, local world, dynamic evolving