Research Of Energy-Saving Routing Algorithm For Wireless Sensor Networks

With the continuous progress and development of MEMS Technology, Communication Technology and Computer Calculation, the use of micro sensor monitoring data become possible. A lot of micro sensors compose a Wireless Sensor Network. All micro sensors work together to sense formation from the area of Wireless Sensor Network. And data of acquisition and processing is conducted while monitoring the area. Wireless sensor networks are widely used in military defense, traffic management, environmental monitoring, disaster management and other fields. However, energy of each node in wireless sensor networks is extremely limited. How to use routing algorithm with energy-saving technique is the key to improve the performance of the whole network. Energy-saving algorithm has become a research hot issue at home and abroad in recent years.In this paper, on the basis of LEACH protocol, all nodes in the network are divided into three types, common node (in the majority), general cluster head nodes (in the minority) and super cluster head, which is the only one in WSN. This algorithm selects the cluster head according to the rest energy of each node. A super cluster head is chosen in a few of the cluster head nodes. The single super cluster head communicates directly with the base station, so as to reduce energy expenses of communication between the cluster head nodes and the base station. The rest of cluster head nodes do not communicates directly with the base station, but with super cluster heads to send packets of data fusion. In this paper, a three layer based on Clustering Energy-Saving routing protocol named TCESA (Triple Clustering Energy work Algorithm) Algorithm is proposed. The main content of this paper is as follows:(1) The basic principle of classical clustering protocol of LEACH is researched. Two scenes of50x50m2and100x100m2are simulated respectively using the software of Network Simulation-version2, and the base station is in different place of coordinate. (2) On the basis of LEACH protocol, in this paper, a three layer based on clustering energy-saving routing algorithm is proposed. Two scenes of50x50m2and100×100m2are simulated respectively using the software of Network Simulation-version2, and the base station is in different place of coordinate.(3) In the network simulation platform on the software of NS2, LEACH protocol and TCESA algorithm are simulated respectively, and the simulation experiment in the two different network scenes with different parameters. Network performances of this two protocols are compared, that is the network life cycle, the network stability period, the network energy consumption and data throughput situation and some other aspects.The simulation results show that, compared to LEACH protocol, TCESA algorithm can effectively save the total energy consumption of the communication between the cluster head and base station, so as to prolong the network life cycle and network stable period obviously, and the algorithm has the feasibility.