面向实时视频流传输的边缘计算资源分配方案  

Edge Computing Resource Allocation Scheme for Real-Time Video Streaming

作　　者：徐奥 王磊[1] 王俊[2] 崔景伍[1] 郑宝玉[1] XU Ao;WANG Lei;WANG Jun;CUI Jingwu;ZHENG Baoyu(School of Communications and Information Engineering,Nanjing University of Posts and Telecommunications;School of Geographic and Biologic Information,Nanjing University of Posts and Telecommunications,Nanjing 210003,China)

机构地区：[1]南京邮电大学通信与信息工程学院 [2]南京邮电大学地理与生物信息学院,江苏南京210003

出　　处：《软件导刊》2024年第5期68-74,共7页Software Guide

摘　　要：随着直播行业的兴起,基站视频流量激增问题日趋严重。为此,设计一种面向视频传输的移动边缘计算任务卸载联合资源分配方案,将原问题可分解为实时视频任务卸载决策问题和移动边缘计算资源分配问题。该方案利用可伸缩视频编码技术的分层特性,通过编码将视频流转换为基础层和增强层,以适应用户信道间的差异性,降低视频上传运输成本,提高用户体验质量。考虑到移动边缘计算就近服务用户的特点,该方案将视频任务卸载至边缘端进行解析,用于解决视频层数选择、卸载基站选择以及联合资源优化问题。仿真实验表明,与传统方案相比,所提方案的卸载可行性明显更高,且有效减少了传输时延和能源消耗,提高了移动用户的视频传输性能。With the rise of the live streaming industry,the problem of a surge in base station video traffic is becoming increasingly serious.Therefore,a joint resource allocation scheme of mobile edge computing task unloading for video transmission is designed.The original problem can be divided into real-time video task unloading decision problem and mobile edge computing resource allocation problem.This scheme utilizes the layered characteristics of scalable video encoding technology to convert video streams into base and enhancement layers through encoding,in order to adapt to the differences between user channels,reduce video upload and transportation costs,and improve user experience quality.Considering the characteristics of mobile edge computing serving users nearby,the scheme offloads video tasks to the edge for analysis,which is used to solve the problems of video layer selection,unloading base station selection and joint resource optimization.Simulation experiments show that compared with traditional schemes,the proposed scheme has significantly higher offloading feasibility,effectively reduces transmission delay and energy consumption,and improves the video transmission performance of mobile users.consumption,and improves the video transmission performance of mobile users.

关 键 词：视频流量 移动边缘计算 可伸缩视频编码 卸载决策 资源分配 

分 类 号：TN919.85[电子电信—通信与信息系统] TP391.9[电子电信—信息与通信工程]