Sensor Deployment in Heterogeneous Wireless Sensor Networks

摘要: We study the heterogeneous wireless sensor networks (WSNs) and propose necessary condition of optimal deployment. Similar to that in homogeneous WSNs, implies every node location should coincide with centroid its own sensing region. Moreover, we discuss dynamic deployment both WSNs limited communication range for nodes. The purpose is improve performance, reflected by distortion coverage. model problem as a source coding reflecting accuracy. Traditionally, coverage area covered However, when limited, WSN may be divided into several disconnected sub-graphs. Under such scenario, neither conventional nor represents performance collected data sub-graphs cannot communicated access point. By defining an appropriate measure, Restrained Lloyd (RL) algorithm Deterministic Annealing (DA) optimize WSNs. Our simulation results show DA RL algorithms outperform existing limited.