期刊名称：International Journal of Wireless & Mobile Networks
印刷版ISSN：0975-4679
电子版ISSN：0975-3834
出版年度：2015
卷号：7
期号：5
页码：37
出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：One of the most important multimedia applications is Internet protocol TV (IPTV) for next-generationnetworks. IPTV provides triple-play services that require high-speed access networks with the functions ofmulticasting and quality of service (QoS) guarantees. Among 4G mobile ac-cess networks, LTE networksare regarded as among the best solutions to meet higher bandwidth demands. In this paper, we propose anew architecture for multicasting live IPTV traffic in 4G LTE networks. The proposed mechanism involvesassigning a unique logical link identifier to each IPTV channel. To manage multicasting, a prior storingserver in the Base Station and in each mobile network unit, mobile phone, is constructed. In this work, wepropose a partial prior storing strategy that considers the changes in the popularity of the video contentsegments over time and the access patterns of the users to compute the utility of the objects in the priorstorage. We also propose to partition the prior storage to avoid the eviction of the popular objects (thosenot accessed frequently) by the unpopular ones which are accessed with higher frequency. The popularitydistribution and ageing of popularity are measured from two online datasets and use the parameters insimulations. Simulation results show that our proposed architecture can improve the system performanceand QoS parameters in terms of packet delay, jitter and packet loss.
关键词：Internet protocol TV; Wireless Network; Mobile Network; QoS parameters
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