The Research of Coverage Problems in Wireless Sensor Network

Wireless sensor network is composed by wireless sensor nodes, which have capabilities of perception, computing and communication. Network coverage is the main support technology in wireless sensor network application; it can achieve the physical information perception of the target region and the target object through the spatial distribution of sensor nodes in the network. Network coverage fundamentally reflects the network´s perception ability for physical world. In addition, it largely affects the cost of the network and the performance of specific application. Network coverage is to be the most important issues in the network design. We first introduce simple coverage model of the wireless sensor network in this paper, and next, we discuss the challenges which belong to the issue of network coverage. In this paper, we describe the classification of coverage issues in detail.