Analysis of WMN-GA Simulation Results: WMN Performance Considering Stationary and Mobile Scenarios

Wireless Mesh Networks (WMNs) are attracting a lot of attention from wireless network researchers. Node placement problems have been investigated for a long time in the optimization field due to numerous applications in location science. In our previous work, we evaluated WMN-GA system which is based on Genetic Algorithms (GAs) to find an optimal location assignment for mesh routers. In this paper, we evaluate the performance of normal distribution of mesh clients for two different scenarios: stationary mesh clients and mesh clients moving according to random waypoint mobility model. As evaluation metrics, we used Packet Delivery Ratio (PDR), end-to-end delay and jitter. For simulations, we used QualNet and Hybrid Wireless Mesh Protocol (HWMP). We compare the performance of the optimized network component for event site scenarios of mesh clients by sending multiple constant bit rate flows in the network. The simulation results show that for stationary scenario, all mesh routers are concentrated in the center of grid and the communication becomes easy. For small packet rate, the PDR is almost 100% for different number of flows. For mobile scenario, the PDR is less than 80% for small sent packet rate. For both scenarios, the performance is almost the same and with increasing of packet rate, the PDR is decreased.