Near-Optimal Transmission Optimization of Cache-Based SVC Vehicle Video

查看全文 作　　者：Xianlang [1]Hu;He [1]Dong;Xiangrui [2]Kong;Ruibing [2]Li;Guangsheng [2]Feng;Hongwu [2]Lv 机构地区：[1]Jiangsu Automation Research Institute,Lianyungang 222002,China;[2]College of Computer Science and Technology,Harbin Engineering University,Harbin 150080,China 出　　处：《国际计算机前沿大会会议论文集》索引2020年第1期,共13页 基　　金：the System Architecture Project(No.614000-40503);the Natural Science Foundation of China(No.61872104);the Natural Science Foundationof Heilongjiang Province in China(No.F2016028);the Fundamental Research Fund forthe Central Universities in China,and Tianjin Key Laboratory of Advanced Networking(TANK)in College of Intelligence and Computing of Tianjin University。 摘　　要：A problem of video streaming of scalable video coding(SVC)is studied in vehicular networks.To improve the performance of the video streaming services and alleviate the pressure on backhaul links,the small cell base stations(SBS)is proposed with caching ability to assist the content delivery.In this paper,it introduced the problem of joint optimization of caching strategy and transmission path in SBS cache cluster.An integer programming problem was formulated to maximize the average quality of experience.In order to obtain the globally optimal solution,the primal problem was first relaxed,then an adaptive algorithm was used based on the joint KKT condition,and the branch definition algorithm was applied.Extensive simulations were performed to demonstrate the efficiency of our proposed caching strategy. 关 键 词：SVC CACHE Transmission method Vehicle video