文章基本信息

标题：Hybrid Multicast and Segment-Based Caching for VoD Services in LTE Networks
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作者：Choi, Kwangjin ; Choi, Seong Gon ; Choi, Jun Kyun 等
期刊名称：ETRI Journal
印刷版ISSN：1225-6463
电子版ISSN：2233-7326
出版年度：2015
卷号：37
期号：4
页码：685-695
DOI：10.4218/etrij.15.0114.1278
语种：English
出版社：Electronics and Telecommunications Research Institute
摘要：This paper proposes a novel video delivery scheme that reduces the bandwidth consumption cost from a video server to terminals in Long-Term Evolution networks. This proposed scheme combines optimized hybrid multicast with a segment-based caching strategy for use in environments where the maximum number of multicast channels is limited. The optimized hybrid multicast, allocation of multicast channels, and cache allocation are determined on the basis of a video's request rate, the related video's length, and the variable cost per unit size of a segment belonging to the related video. Performance evaluation results show that the proposed scheme reduces a video's delivery costs. This work is applicable to on-demand TV services that feature asynchronous video content requests.
关键词：LTE;VoD;hybrid multicast;patching;caching