Research On QoS-based Low-voltage Power Line Carrier Communication Routing Algorithm

In recent years,Low-Voltage Power Line Carrier Communication network(LVPLC)has good application prospects in the Internet of Things environment due to its advantages of wide coverage,low investment cost,and convenient access.The use of low-voltage power line carrier communication can improve network coverage,but the low-voltage power line channel characteristics make the network topology volatile,resulting in problems such as limited effective communication distance of carrier nodes and low network reliability.Meanwhile,in order to meet the increasing demand for communication services,it is necessary to plan the routes reasonably,which brings great challenges to the rational use of network resources.Therefore,how to effectively and reasonably networking and quickly find the optimal route to solve the reliability problem of low-voltage power line carrier communication has become a hot research topic in the current industry and academia.This thesis analyzes the status of low-voltage power line communication,and studies the low-voltage power line communication networking technologies and its application routing algorithms.The specific research work is as follows:Firstly,aiming at the problem of limited reliable communication distance of low-voltage power line carrier communication network,a centralized networking algorithm based on node connectivity and load is proposed.The algorithm selects relay nodes based on node connectivity and load,which can realize the connection between network nodes and ensure the load balance of each node.On this basis,the Central Coordinator(CCO)backs up the neighbor nodes for the carrier nodes and establishes a stable and reliable low-voltage power line carrier communication network.Furthermore,the simulation results show that the algorithm can effectively establish the connectivity of the low-voltage power line carrier communication network.In addition,in order to make further rational and efficient use of network resources and minimize the delay and packet loss rate as the main routing constraints,a route optimization algorithm of low-voltage power line carrier communication network based on adaptive genetic algorithm to achieve Quality of Service(Qo S)parameter constraints is proposed.At the same time,in order to ensure the reliability of real-time network communication in a dynamically changing network environment,a multi-path routing algorithm is proposed.Simulation results verify that the routing algorithm in this thesis can quickly search for the optimal route,and ensure the reliable transmission of real-time communication,effectively improving network performance.