Research On Ad Hoc Network Lifetime Extension Method Based On Cooperative Communication And Topology Control

Ad Hoc network nodes generally use battery for supplying power,its short survival period is a prominent issue,how to effectively extend the survival period has been the focus of research.Topology control technology can reduce energy consumption by adjusting the transmission power of network nodes,so that the nodes can communicate signal in a multi hop way to reduce energy consumption,Thereby prolonging the network lifetime.Cooperative communication technology expands the application scope of topology control technology through the use of node resource sharing.The cooperative communication technology can make the topology control suitable for the initialization of disconnected networks.The existing Ad Hoc network lifetime prolongation method constructe the minimum energy consumption sub graph,from local energy consumption optimization to achieve the purpose of global optimization,but optimization of total energy consumption is not completely equal to optimize network lifetime.In this paper,the network lifetime evaluation model was constructed,using cooperative communication and topology control of Ad Hoc network lifetime extension technique.Main work has:Considering network lifetime evaluation model of real total energy consumption of the network and nodes energy consumption,this paper puts forward the idea which an application in heterogeneous based on cooperative communication and topology control.Ad Hoc network lifetime can be prolonged method ALSC.Through the simulation experiment show that the ALSC under different P_elec?circuit loss?can construct the minimum power topology sub graph which can retain any node of the longest survival path,and can be adaptive to the energy loss that the card is different.Compared with Bridge Cooperative method and CCPA method,ALSC can effectively prolong the lifetime of network.Based on ALSC,a method to prolong the lifetime of heterogeneous Ad Hoc networks?Sensor Networks?is proposed,which is based on ALSCH.Compared with the ALSC structure,the energy consumption model adopted by ALSCH is more real and more general.Simulation experiments show that similar to ALSC.Under different P_R0?loss parameter?.ALSCH can construct the minimum power topology sub graph which can retain any node of the longest survival path,so as to effectively prolonging the survival time of the network.