Topology Control In Applied Research, The Wmn Throughput Performance Optimization

Multi-interface multi-channel WMN (Wireless mesh networks) is a key access technology in the next-generation wireless network, and becomes a hot subject in current research. One of these important works is improve the throughput capacity. In this paper, we make a depth study of the gateway deployment and the network topology control for the throughput performance of WMN. Correspondingly, we figure out some schemes to improve this project.In a WMN, the traffic is aggregated at mesh router and most of them forwarded towards the internet through gateway. Thus easily leads to a bottleneck for network performance at gateway. Aimed to this problem, firstly consider the gateway and mesh router as the alike node equivalently. Then use the logarithm-normal distribution model of shadow affect in wireless communication to design a weighted objective function to guarantee the connectivity and coverage of nodes, attained the deployment location of candidate gateway; based of the generated connectivity graph of the network and the constraints of the gateway deployment, consider a heuristic tree-set partition algorithm based on degree/weighted to get a good choice of nodes with high throughput and better connectivity act as gateway configuration.Accordingly, adopt a solution of multi-gateway association to cope with load balancing among them.In addition, because of the complex toplogy lies in underlying infrastructure of the WMN, and owing to the problems of larger transmission interference and power consumption, high routing overhead. We develop a topology generation algorithm based on Delaunay triangulation to meet the needs of connectivity, planar and sparse required by the deployment of network topology, so as to simplify the layout set in WMN. At the same time, also proposed a greedy forwarding routing algorithm based on node location to solve the problems happens when link failures or node congestion, routing loops and so on, by means of monitor the link cache of nodes and data transmission backoff.In conclusion, we validated and analysed our strategy ideas and achieved a certain improvement effect for throughput in different scenario under NS2 simulation.