Research On Topology Control Of MANET

MANET (Mobile Ad Hoc Network) is one of the most important research aspectsin mobile or wireless networks. Topological structure of MANET is the foundation ofits routing, which has a great effect on the performance of the whole network. Therefore,the research on topology control technology is an important direction in MANET.A novel topology control algorithm——ELSSk(k-Connected Energy-aware LocalSpanning Subgraph) is proposed in this paper, which aims to improve the performanceof network lifespan and capacity. ELSSknot only constructs the shortest path betweentwo nodes to reduce the overall energy consumption, but also takes the current residualenergy of each node into account. Consequently, ELSSkalgorithm successfully avoidsoverusing less-energy nodes which will cause the network partition, and significantlyextends the network’s lifetime. A k-connected local spanning subgraph for each node isconstructed to optimize the network with high-degree connection topology. Moreespecially, the network capacity is increased effectively.Theoretical analysis show that, for a k-connected MANET network, ELSSkcan notonly decrease the transmission power of the nodes to minimize the maximum linkweight of the network among all strictly localized algorithms that preserve k-vertexconnectivity, but also preserve the k-vertex connectivity property of the originalnetwork to increase network capacity. Simulation results through OPNET indicate thatELSSkalgorithm can renew the topology of the network with the change of the residualenergy of all nodes. Compared with existing localized topology control algorithms,ELSSkhas better power-efficiency, network lifetime, and higher network capacity.