Research On Channel Assignment Technology Of MRMC Wireless Ad Hoc Network

With the rapid development of wireless network technology,people are pursuing more real-time and efficient communication.Compared with the traditional wireless network,the wireless ad hoc network does not depend on the infrastructure,has the advantages of convenient deployment and strong anti-destructiveness,and has become a research hotspot in the field of communication today.Compared with the single-channel network,the multi-radio multi-channel network can effectively utilize channel resources and increase network capacity.However,the multi-radio multi-channel technology complicates the resource assignment problem,and the design of the channel assignment schemes becomes critical.This paper studies the static channel assignment problem in MRMC dense ad hoc network,and proposes the corresponding channel assignment algorithms for two network scenarios.The main research contents and results are as follows:This paper introduces the multi-radio multi-channel wireless ad hoc network,analyzes the advantages and problems of the network,and studies the design points of the channel allocation scheme.The existing static channel assignment algorithms are researched and analyzed,which lays a foundation for the subsequent channel assignment algorithms design.For the dense ad hoc network based on Parking Lot m odel,this paper first proposes a distributed resource-maximized(PL-DRM)channel assignment algorithm.This algorithm takes network connectivity as a premise and makes full use of network resources to minimize network interference.The PL-DRM algorithm is simulated by Matlab,and the relationship between throughput performance and resource usage is analyzed under different network environments.According to the results,the PL-DRM algorithm is optimized to obtain the distributed throughput-maximized(PL-DTM)channel assignment algorithm.The simulation results show that compared with others comparison alogrithms,the PL-DTM algorithm improves the node throughput performance by more than 5%.For dense multi-hop ad hoc networks,according to the characteristics of the network,this paper proposes the corresponding distributed throughput-maximized(DM-DTM)channel assignment algorithm.In DM-DTM algorithm,the node improves the throughput performance of the network by rationally utilizing channel resources according to local network information,reducing interference between nodes,and forming a ri ch network topology.In addition,a convergence strategy is formulated in the algorithm to ensure the convergence.This paper uses Matlab to simulate the DM-DTM algorithm.The simulation results show that the DM-DTM algorithm has a faster convergence rate and can effectively reduce the interference in the network.Compared with other comparison algorithms,the DM-DTM algorithm improves the node throughput performance by more than 15%.