Open AccessOptimization of Caching Update and Pricing Algorithm Based on Stochastic Geometry Theory in Video Service
Author(s) -
Wenbin Fu
Publication year - 2022
Publication title -
ieee access
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.587
H-Index - 127
ISSN - 2169-3536
DOI - 10.1109/access.2022.3198667
Subject(s) - aerospace , bioengineering , communication, networking and broadcast technologies , components, circuits, devices and systems , computing and processing , engineered materials, dielectrics and plasmas , engineering profession , fields, waves and electromagnetics , general topics for engineers , geoscience , nuclear engineering , photonics and electrooptics , power, energy and industry applications , robotics and control systems , signal processing and analysis , transportation
In order to meet the growing needs of vehicle users for high-quality video experience, it can be used caching technology and transcoding technology to meet the needs of vehicle users. However, due to the complexity of the practical scene, when improving the service quality of vehicle users, it is necessary to consider the mobility of vehicle users and the utilization of network resources (caching, base station computing resources, backhaul links, etc.). In order to deal with the impact of vehicle mobility and network resource usage on the acquisition of video segments by vehicle users, this paper not only takes vehicle mobility into full account in mathematical modeling, but also proposes caching update algorithm and pricing algorithm. Firstly, considering the transcoding between different versions of video, the base station takes into account the value of energy consumption when caching video segments. Then, according to the different use of caching, base station computing resources and backhaul links by vehicle users, a pricing algorithm of network resources is proposed to improve the flexibility of network resource utilization. Finally, the mathematical model is optimized by convex optimization theory, and the influence of caching update algorithm on caching gain and the impact of pricing algorithm on network resource utilization are shown through simulation. The simulation results show that the total gain, caching gain, transcoding gain and flexibility of network resource utilization are improved significantly.