Caching, transcoding, delivery and learning for advanced video streaming services

IF 4.1 3区计算机科学 Q1 COMPUTER SCIENCE, INFORMATION SYSTEMS ICT Express Pub Date : 2024-08-01 DOI:10.1016/j.icte.2024.05.012

Minseok Choi, Tiange Xiang, Hyelee Lim, Yunoh Kim, Minkyun Ahn, Sunghun Oh, Hyeonsu Kim

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Abstract

Online video services are responsible for a large amount of global data traffic, which is why wireless video caching has become a major focus in order to deal with the increasing amount of data. While conventional caching methods have been successful in reducing file transmission latency and data traffic on the core network, there is still a lot of potential to improve wireless caching for streaming users’ satisfaction, especially as video streaming technology continues to improve. To improve caching, it is important to consider the distinct characteristics of a video file, video encoding, dynamic video streaming, and even 3D video services such as virtual reality (VR) and augmented reality (AR). This paper investigates the distinct video features that can be used to design video caching policies. Additionally, recent studies on wireless video caching and delivery are surveyed, with a focus on four key characteristics: (1) partitioning a video file, (2) encoding a video file into multiple quality versions, (3) recognizing that video file popularity is dynamic and heterogeneous, and (4) understanding that video recommendation affects a series of user requests.

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先进视频流媒体服务的缓存、转码、传输和学习

在线视频服务占全球数据流量的很大一部分，因此无线视频缓存已成为应对日益增长的数据量的主要焦点。虽然传统的缓存方法在减少文件传输延迟和核心网络的数据流量方面取得了成功，但为了让流媒体用户满意，无线缓存仍有很大的改进潜力，尤其是随着视频流技术的不断改进。要改进缓存，必须考虑视频文件、视频编码、动态视频流，甚至虚拟现实（VR）和增强现实（AR）等三维视频服务的不同特点。本文研究了可用于设计视频缓存策略的独特视频特征。此外，本文还调查了近期有关无线视频缓存和传输的研究，重点关注四个关键特征：(1) 对视频文件进行分区；(2) 将视频文件编码为多个质量版本；(3) 认识到视频文件的流行程度是动态和异构的；(4) 理解视频推荐会影响一系列用户请求。

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来源期刊

ICT Express Multiple-

CiteScore

10.20

自引率

1.90%

发文量

167

审稿时长

35 weeks

期刊介绍： The ICT Express journal published by the Korean Institute of Communications and Information Sciences (KICS) is an international, peer-reviewed research publication covering all aspects of information and communication technology. The journal aims to publish research that helps advance the theoretical and practical understanding of ICT convergence, platform technologies, communication networks, and device technologies. The technology advancement in information and communication technology (ICT) sector enables portable devices to be always connected while supporting high data rate, resulting in the recent popularity of smartphones that have a considerable impact in economic and social development.