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Improving transmission efficiency in H.264 based IPTV systems
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (Electronics design division, SensorNetworkSecurity, SensibleReality, MUCOM)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media. (SensorNetworkSecurity, SensibleReality, MUCOM)
Mid Sweden University, Faculty of Science, Technology and Media, Department of Information Technology and Media.
2007 (English)In: IEEE transactions on broadcasting, ISSN 0018-9316, E-ISSN 1557-9611, Vol. 53, no 1, p. 69-78Article in journal (Refereed) Published
Abstract [en]

In this paper, a novel proposal regarding the transmission of the next generation of live-TV content in an IPTV environment is presented. Today live-TV IP transmission systems utilizes a Group Of Pictures (GOP) structure in order to provide stream synchronization points for the clients. Synchronization points are used when a TV-channel switch occurs. The number of channel switches made by TV audiences have been shown to be rather rare. It is therefore redundant to send synchronization events in a GOP manner. Our proposal, Synchronization Frames for Channel Switching (SFCS), only requests synchronization points when required. Due to channel popularity distributions and the number of connected users, the total number of synchronization requests for a popular channel can increase to a level that makes SFCS less effective than GOP. Therefore, we introduce an SFCS-GOP hybrid. A complete network traffic analysis model, verified by a simple simulation environment, is also presented and the results show that the SFCS-GOP hybrid significantly increases the bandwidth utilization compared to a traditional GOP system

Place, publisher, year, edition, pages
2007. Vol. 53, no 1, p. 69-78
Keywords [en]
Interactive TV, Multicast channels, Video coding
National Category
Computer Sciences
Identifiers
URN: urn:nbn:se:miun:diva-8472DOI: 10.1109/TBC.2006.887167ISI: 000244615200008Scopus ID: 2-s2.0-33847725014OAI: oai:DiVA.org:miun-8472DiVA, id: diva2:139832
Projects
STC - Sensible Things that Communicate
Note

VR-Computer Science

Available from: 2009-01-26 Created: 2009-01-26 Last updated: 2018-01-13Bibliographically approved

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Jennehag, UlfZhang, TingtingPettersson, Stefan

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