首页|Video caching and scheduling with edge cooperation

Video caching and scheduling with edge cooperation

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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.

Video serviceDistributed and collaborative cachingLong-term popularityShort-term popularity

Zhidu Li、Fuxiang Li、Tong Tang、Hong Zhang、Jin Yang

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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

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaChina University Industry-University-Research Collaborative Innovation Fund(Future Network Innovation Research and ApplicatiChina Postdoctoral Science FoundationChongqing Postdoctoral Science Special FoundationNatural Science Foundation of ChongqingUniversity Innovation Research Group of ChongqingScience and Technology Research Program of Chongqing Municipal Education CommissionYouth Innovation Group Support Program of ICE Discipline of CQUPT

6190107861871062U20A201572021FNA040082022MD7136922021XM2018cstc2020jcyjzdxmX0024CXQT20017KJQN202000626SCIE-QN-2022-04

2024

10.1016/j.dcan.2022.09.012

数字通信与网络(英文)

数字通信与网络(英文)

ISSN：
年,卷(期)：2024.10(2)
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