Research On Topology Control Of Wireless Ad Hoc Network Based On SINR

Wireless Ad hoc network is a multi-hop peer-to-peer network that does not require the support of a fixed base station.Compared with the traditional network,the wireless Ad hoc network networking method has the characteristics of convenience and flexibility.In wireless Ad hoc network,nodes are powered by batteries carried by themselves.Nodes have the advantages of low cost and small size.At the same time,there are also problems such as limited energy,relatively slow CPU,and small memory.Therefore,it is very important to propose solutions to reduce energy consumption and prolong network life.Topology control can reduce the interference in the network to achieve the purpose of reducing energy consumption and extending the network life time.The existing topology control algorithms are mostly based on the graph model,and do not take into account the cumulative interference when the nodes transmit information.The Signal to Interference plus Noise Ratio(SINR)model considers that the cumulative interference problem in the node transmission,so it is closer to the actual environment.Therefore,it is more practical to study the topology control algorithm under SINR model.The concrete research contents of this paper are as follows:(1)A novel controllable distributed topology control algorithm is proposed: Controllable Disjoint Path Vector(CDPV),which effectively constructs k-vertex connected network topology,and using residual energy-aware(REA)technology,according to the residual energy of nodes,the transmission power of nodes is adjusted.The nodes with low residual energy choose the nearest neighbor and realize the rational distribution of total residual energy between nodes.The method could extend the network's life time.First,we describe the algorithm thought and implementation process.Then,in order to verify the feasibility and effect of the algorithm,MATLAB simulation software was used to calculate the experimental results.Finally,the feasibility and validity of the algorithm are given.(2)A topology control algorithm for minimizing link interference(MLI)is proposed based the SINR model.The algorithm constructs network topology with minimal link interference based SINR.In this algorithm,we use the same transmission power to find the physical neighbor,calculate the cumulative interference of any node,and topology with the target of minimal network interference.The experimental results show that the MLI topology control algorithm can effectively reduce network interference and extend the network life time.