Video caching and scheduling with edge cooperation

Zhidu Li ¹Fuxiang Li ¹Tong Tang ¹Hong Zhang ¹Jin Yang¹

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作者信息

1. School of Communication and Information Engineering Chongqing University of Posts and Telecommunications,Chongqing,400065,China;Advanced Network and Intelligent Connection Technology Key Laboratory of Chongqing Education Commission of China Chongqing,400065,China;Key Laboratory of Ubiquitous Sensing and Networking in Chongqing,Chongqing 400065,China
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Abstract

In this paper,we explore a distributed collaborative caching and computing model to support the distribution of adaptive bit rate video streaming.The aim is to reduce the average initial buffer delay and improve the quality of user experience.Considering the difference between global and local video popularities and the time-varying characteristics of video popularity,a two-stage caching scheme is proposed to push popular videos closer to users and minimize the average initial buffer delay.Based on both long-term content popularity and short-term content popularity,the proposed caching solution is decouple into the proactive cache stage and the cache update stage.In the proactive cache stage,we develop a proactive cache placement algorithm that can be executed in an off-peak period.In the cache update stage,we propose a reactive cache update algorithm to update the existing cache policy to minimize the buffer delay.Simulation results verify that the proposed caching algorithms can reduce the initial buffer delay efficiently.

Key words

Video service/Distributed and collaborative caching/Long-term popularity/Short-term popularity

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基金项目

National Natural Science Foundation of China(61901078)

National Natural Science Foundation of China(61871062)

National Natural Science Foundation of China(U20A20157)

China University Industry-University-Research Collaborative Innovation Fund(Future Network Innovation Research and Applicati(2021FNA04008)

China Postdoctoral Science Foundation(2022MD713692)

Chongqing Postdoctoral Science Special Foundation(2021XM2018)

Natural Science Foundation of Chongqing(cstc2020jcyjzdxmX0024)

University Innovation Research Group of Chongqing(CXQT20017)

Science and Technology Research Program of Chongqing Municipal Education Commission(KJQN202000626)

Youth Innovation Group Support Program of ICE Discipline of CQUPT(SCIE-QN-2022-04)

出版年

2024

数字通信与网络(英文)

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参考文献量28

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