New distributed Web-caching technique for VOD services

Iksoo Kim; Yoseop Woo; Taejune Hwang; Jintak Choi; Youngjune Kim

doi:10.1117/12.455663

10 December 2002 New distributive web-caching technique for VOD services

Iksoo Kim, Yoseop Woo, Taejune Hwang, Jintak Choi, Youngjune Kim

Proceedings Volume 4861, Multimedia Systems and Applications V; (2002) https://doi.org/10.1117/12.455663
Event: ITCom 2002: The Convergence of Information Technologies and Communications, 2002, Boston, MA, United States

Abstract

At present, one of the most popular services through internet is on-demand services including VOD, EOD and NOD. But the main problems for on-demand service are excessive load of server and insufficiency of network resources. Therefore the service providers require a powerful expensive server and clients are faced with long end-to-end delay and network congestion problem. This paper presents a new distributive web-caching technique for fluent VOD services using distributed proxies in Head-end-Network (HNET). The HNET consists of a Switching-Agent (SA) as a control node, some Head-end Nodes (HEN) as proxies and clients connected to HEN. And each HEN is composing a LAN. Clients request VOD services to server through a HEN and SA. The SA operates the heart of HNET, all the operations using proposed distributive caching technique perform under the control of SA. This technique stores some parts of a requested video on the corresponding HENs when clients connected to each HEN request an identical video. Thus, clients access those HENs (proxies) alternatively for acquiring video streams. Eventually, this fact leads to equi-loaded proxy (HEN). We adopt the cache replacement strategy using the combination of LRU, LFU, remove streams from other HEN prior to server streams and the method of replacing the first block of video last to reduce end-to end delay.

Citation Download Citation

Iksoo Kim, Yoseop Woo, Taejune Hwang, Jintak Choi, and Youngjune Kim "New distributive web-caching technique for VOD services", Proc. SPIE 4861, Multimedia Systems and Applications V, (10 December 2002); https://doi.org/10.1117/12.455663

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