Research On Joint Content Caching And Recommendation System For Vehicular Networks

The Internet of Vehicles is a huge information exchange network that collects information such as vehicles,roads and pedestrians.An important use of this network is to meet the entertainment demand of driving users through communication between vehicles and road side units(V2R).In V2R communication,in the face of massive Internet information,vehicles and roadside units are faced with the problem of"information overloading" and limited resources.Therefore,how to use limited resources to efficiently distribute content has become a key issue in this paperFirstly,this paper proposes a roadside unit cache system based on explicit cache system.In the system,we comprehensively consider the characteristics of the application layer(such as the user’s interest in content)and the constraints of the physical layer(such as channel resources,storage capacity,etc.),established a complete content cache and recommended system architecture.Then,on the architecture constructed,we study from the perspective of the vehicle user set that is about to enter the roadside unit to maximize the cache content and optimize the problem for the vehicle user set income,and design the optimal algorithm and heuristic algorithm for the optimization problem.The performance difference of various algorithms is compared from the simulation.The simulation results show that for the vehicle users,the files selected by the system can better meet the user’s expectations and bring a higher user experience to the users.Finally,considering the certain vehicle user service quality,the optimization problem of maximizing operator profit is optimized from the operator’s point of view.The unit flow pricing and the caching scheme are studied.The simulation results show that the system shows the system.It can improve the profit conversion rate of the cache and bring higher profits to operators.This paper innovatively proposes a joint content caching and recommendation system for vehicle networking application scenarios.In the design of the system,the vehicle user’s interest in content is taken into consideration as a new dimension in advance.The research provides a novel and effective method,which is a design example with broad application prospects for the application scenario of the Internet of Vehicles...