The Research of Non-Uniform Node Distribution in Wireless Sensor Networks

In large scale deployment of wireless sensor networks, nodes transmitted sensed data through multi-hop to Sink, The area near the Sink forms energy hole due to heavy load. Non-uniform node distribution can effectively solve the problem of energy hole; this paper theoretically analyzes the network energy consumption and presents a method of node distribution, according to the method a kernel-based routing algorithm is proposed. In the guarantee of the monitoring area´s coverage and connectivity, the nodes of kernel work by turns to achieve the purpose of efficient use of energy. Simulation results show that the routing algorithm is consistent with the theoretical analysis; the energy of network is fully utilized and the lifetime of network greatly increased.