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A framework for dynamic hybrid scheduling strategies in heterogeneous asymmetric environments

机译:异构非对称环境中动态混合调度策略的框架

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摘要

The increasing growth of wireless access networks, proliferation of the Internet and gradual deployment of broadband networks has already given birth to a set of information-centric applications based on data transmission. Efficient scheduling techniques are necessary to endow these applications with advanced data processing capability. Broadly all data transmission applications are divided into (1) push and (2) pull systems. Hybrid scheduling, resulting from an effcient combination of these two types of data delivery, often exploits the advantages of both the schemes. The objective of this dissertation is to investigate and develop a novel hybrid scheduling platform by effectively combining broadcasting (push) of popular data and dissemination (pull) of less popular data. One major advantage of this algorithm is dynamic computation of cut-of-point, used to segregate the popular and less-popular data items, without any prior knowledge or assumptions. In order to achieve a better performance, the framework is enhanced to allow a set of consecutive push and pull operations, depending on the probabilities of the data items present in the system. The framework also incorporates practical issues like clients' impatience leading to clients' departure and transmission of spurious requests. A new client's priority-based service classification scheme is proposed to provide differentiated QoS in wireless data networks. The framework proceeds further to incorporate dynamic hybrid scheduling over multiple channels. Performance modeling, analysis and simulation study points out efficiency of the entire framework.
机译:无线访问网络的不断增长,互联网的普及以及宽带网络的逐步部署已经催生了一系列基于数据传输的以信息为中心的应用程序。要使这些应用程序具有高级数据处理功能,必须使用有效的调度技术。大致上,所有数据传输应用程序都分为(1)推和(2)拉系统。由这两种类型的数据传递的有效组合而产生的混合调度通常会利用这两种方案的优势。本文的目的是通过有效结合流行数据的广播(推送)和较不流行数据的传播(拉)来研究和开发一种新型的混合调度平台。该算法的一个主要优点是动态计算切点,无需任何先验知识或假设即可将切分的流行数据项分离开来。为了获得更好的性能,根据系统中存在的数据项的概率,对框架进行了增强以允许一组连续的推和拉操作。该框架还包含一些实际问题,例如客户的不耐烦导致客户的离开和虚假请求的传输。提出了一种新的基于客户优先级的服务分类方案,以在无线数据网络中提供差异化​​的QoS。框架进一步进行以合并多个通道上的动态混合调度。性能建模,分析和仿真研究指出了整个框架的效率。

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  • 作者

    Saxena Navrati;

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  • 年度 2005
  • 总页数
  • 原文格式 PDF
  • 正文语种 {"code":"en","name":"English","id":9}
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