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Queueing Analysis of Unicast IPTV With User Mobility and Adaptive Modulation and Coding in Wireless Cellular Networks

机译：用户移动性和自适应性的单播IpTV排队分析   无线蜂窝网络中的调制和编码

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Unicast IPTV services that can support live TV, video-on-demand (VoD), videoconferencing, and online gaming applications over broadband wireless cellularnetworks have been becoming popular in recent years. However, video streamingservices significantly impact the performance of wireless cellular networksbecause they are bandwidth hogs. To maintain the system performance, effectiveadmission control and resource allocation mechanisms based on an accuratemathematical analysis are required. On the other hand, the quality of awireless link usually changes with time due to the user mobility ortime-varying channel characteristics. To counteract such time-varying channelsand improve the spectral efficiency, adaptive modulation and coding (AMC)scheme can be adopted in offering unicast IPTV services for mobile users. Inthis paper, closed-form solutions for the bandwidth usage, blocking rate, anddropping rate of unicast IPTV services over wireless cellular networks werederived based on the novel queueing model that considers both user mobility andAMC. Simulations were also conducted to validate the accuracy of analyticalresults. Numerical results demonstrate that the presented analytical resultsare accurate. Based on the accurate closed-form solutions, network providerscan implement precise admission control and resource allocation for theirnetworks to enhance the system performance.
机译：近年来，可以在宽带无线蜂窝网络上支持直播电视，视频点播（VoD），视频会议和在线游戏应用程序的单播IPTV服务已经变得越来越流行。但是，视频流服务由于会占用带宽，因此会严重影响无线蜂窝网络的性能。为了维持系统性能，需要基于精确数学分析的有效准入控制和资源分配机制。另一方面，由于用户移动性或时变信道特性，无线链路的质量通常随时间变化。为了抵消这种时变信道并提高频谱效率，可以在向移动用户提供单播IPTV服务时采用自适应调制和编码（AMC）方案。本文基于考虑用户移动性和AMC的新型排队模型，得出了无线蜂窝网络上单播IPTV服务的带宽使用，阻塞率和丢包率的闭式解决方案。还进行了仿真以验证分析结果的准确性。数值结果表明，所提出的分析结果是准确的。基于精确的封闭式解决方案，网络提供商可以为其网络实施精确的准入控制和资源分配，以提高系统性能。

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    Li, Mingfu;

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  • 年度 2015
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