Research On D2D Relay Selection And Resource Allocation Algorithm In 5G Communication System

The progress of the times is mainly based on the progress of science and technology,and the field of communication has gone through another wave from close distance to long distance,from wired to wireless.The commercial promotion of 4G technology has developed well.In recent years,the explosive growth of wireless mobile devices,the wide use of intelligent terminal equipment and wireless mobile terminal equipment,instant messaging,high definition video and other business requirements have raised higher requirements for communication operators and equipment manufacturers,and countries are greatly improving their performance.At the same time,we should reduce costs,maximize user experience and enhance device performance.At present,many scholars and enterprises have carried out in-depth research on it.Therefore,the development of 5G wireless communication technology is very fast.D2D straight through technology refers to two technologies that are directly connected and communicated with each other near the nearest communication nodes,which do not need base stations to relay.Because of the direct communication between the close range equipment and the equipment in the 5G system,the high speed data transmission can be realized,but the near distance transmission also brings some interference to the cellular users.Therefore,reasonable relay selection and appropriate interference management can play the potential advantages of D2 D.This paper focuses on the following research on how to coordinate the balanced hybrid system to reduce the conflict between them: the relay selection of the D2 D hybrid network system is deeply analyzed,and a relay selection algorithm is optimized.After the simulation analysis,the optimal relay selection algorithm can reduce the system.Aiming at the resource management of D2 D hybrid communication network,a resource allocation algorithm based on non cooperative game is presented,which takes the capacity of D2 D link as utility function.The simulation results show that the non cooperative game algorithm proposed in this paper can quickly converge and also improves the system capacity.