Performance Analysis of Qos Parameters of WSN by Varying Density of the Network

Objective: Performance analysis of QoS parameters of wireless sensor network by varying the density of the network (Number of Nodes) using NS-2. The performance metrics considered are packet delivery ratio, throughput, delay, routing overheads, average energy consumed and average residual energy etc. Methods/Analysis: Using NSG tool, scenarios with varying density are formed in 1000*1000 m*m area. NS2 is used to simulate the working of a network. AODV protocol is used for routing and CBR is used for traffic generation in network. Results: Packet delivery ratio decreases and routing overhead, delay increases as the number of nodes in the network increases. Throughput initially increases but starts decreasing after threshold point i.e, 50 nodes. It can be said that energy consumption decreases and residual energy increases with increasing density. Conclusion: From all the results it can be said that for constant reporting rate and packet size , 50 nodes scenario gives optimum result for all the parameters.