Network Performance Enhancement with Optimization Sensor Placement in Wireless Sensor Network

From one side, sensor manufacturing technology and from other side wireless communication technology improvement has an effect on the growth and deployment of Wireless Network Sensor (WSN). The appropriate performance of WSN has abundant necessity which has dependent on the different parameters such as optimize sensor placement and structure of network sensor. The optimized placement in WSN not only would optimize number of sensors, but also help to reach to the more precise information. Therefore different solutions are proposed to reduce cost and increase life time of sensor networks that most of them are concentrated in the field of routing and information transmission. In this paper, places which they need new sensors placement or sensor movements are determined and then with applying these changes, performance of WSN will calculate. To achieve the optimum placement, the network should evaluate precisely and effective criteria on the performance should extract. Therefore the criteria should be ranked and after weighting with using AHP algorithms, with use of Geographical Information System (GIS), these weighted criteria will combined and in the locations which WSN doesn’t have enough performance, new sensor placement will create. New proposed method, improve 21.11% performance of WSN with sensor placement in the low performance locations. Also the number of added sensor is 26.09% which is lowest number of added sensors in comparison with other methods.