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业务质量约束下最大化收益的HFC频点带宽分配方法 被引量：2

HFC Frequency Bandwidth Allocation Method Based on Constraints of QoS and Maximum Revenue
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摘要 HFC频点带宽的分配是广播电视网络业务提供系统的一项关键技术,直接决定了系统的整体收益.描述了HFC频点带宽资源分配面临的问题,提出基于业务收益函数的频点带宽分配方法.在分析广电网络视频点播、时移电视和高速下载三种典型业务特性的基础上,给出了它们的收益函数,提出了一种基于边际效益的贪婪算法以完成资源的分配.该算法在保证业务质量满足最低要求的基础上,按照各类业务的实际需求分配可用的频点带宽,使系统的收益最大.仿真试验验证了该算法的有效性. The allocation of HFC frequency bandwidth is a key technology in the service delivery systems of broadcast television network.It directly determines the overall system revenue.This paper describes current problems of the distribution of HFC frequency bandwidth and proposes allocation of frequency bandwidth according to the service revenue functions.The paper first analyzes the behaviors of three typical services of broadcast television network： video on demand,time shift TV and high-speed download.Then,it gives their revenue functions.On this basis,the paper proposes a greedy algorithm based on the service marginal revenues.In ensuring the service QoS meets the minimum requirements,the algorithm allocates the HFC frequency bandwidth based on the needs of various services to enable operators to maximize revenue.In the end,simulation results show the effectiveness of the algorithm.
作者 徐战 王劲林 吴刚 刘磊 谢铁兵
机构地区 中国科学技术大学自动化系 中国科学院声学研究所国家网络新媒体工程技术研究中心 北京中科华影传媒技术有限公司
出处 《小型微型计算机系统》 CSCD 北大核心 2012年第6期1223-1227,共5页 Journal of Chinese Computer Systems
基金 国家科技支撑计划项目(2008BAH28B04)资助 国家“八六三”高技术研究发展计划项目(2009AA01A339)资助
关键词 业务质量 收益最大化 HFC频点带宽 资源分配 QoS maximum revenue HFC frequency bandwidth resource allocation
分类号 TN948.64 [电子电信—信号与信息处理]
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参考文献4

二级参考文献37

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共引文献20

同被引文献16

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小型微型计算机系统
2012年 第6期

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