The Research of Scale-Free Sensor Network Topology Evolution Based on the Energy Efficient

Topology control is one of core key factors which can influence performance of wireless-sensor networks (WSN). So how to design topology structure with high reliable and survivability is becoming the important subject on wireless-sensor networks. For the issue, a topology evolution strategy based on scale-free network with energy efficient is proposed. First by clustering algorithm cluster nodes are distributed evenly. Then those nodes start evolving in accordance with random walk processes on scale-free network. Since some key factors such as residual energy of node and node degree are taken into account in evolving procedure, network topology obtains quality features such as load and energy balance. So the network is quite practical. Finally the simulation shows that network topology from the evolution algorithm have good robustness regardless of deliberate and random attack. Consequently robustness feature of wireless-sensor network under severe environment is satisfied.