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Stability-based topology control in wireless multihop networks with reservation-based distributed-scheduling policies.

机译:无线多跳网络中基于预留的分布式调度策略的基于稳定性的拓扑控制。

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摘要

The topology of wireless multihop networks can be controlled by means of transmission power control, and this control can be performed with the objective of adapting the network topology to the data flows established by the end users. By adapting the network topology, the set of flow data rates that the network supports can be increased, or, if the flow data rates are fixed, the end-to-end delays experienced by the flows can be decreased. The research problem studied in this dissertation is the design of topology-control algorithms that maximize the size of the set of supported flow data rates.;The design of the algorithms is approached in three steps. In the first step, the supported set of flow data rates is characterized mathematically for fixed network topologies by means of a queueing-system stability analysis. Two main contributions are achieved in this step. These are (1) a novel stability-analysis technique for reservation-based distributed scheduling (RBDS) policies and (2) the greedy-maximal RBDS (GM-RBDS) policy that outperforms, in terms of throughput, the current policies available in the literature. In the second step, the mathematical characterization of the set of flow data rates supported by GM-RBDS networks is used for the design of a heuristic and centralized topology-control algorithm which outperforms the classic approach based on spatial reuse. The third step consists of the design of distributed topology-control algorithms that also use the mathematical characterization of the set of flow data rates. These algorithms are designed using game theory and compared with the centralized topology control of the second step. The network scenarios in which each of these two approaches (i.e., centralized and distributed) outperforms the other are identified.;Finally, this dissertation also includes the design, implementation, and evaluation of a simulation framework for Institute-of-Electrical-and-Electronics-Engineers (IEEE) 802.16 wireless mesh networks using optimized network engineering tools (OPNET). The GM-RBDS policy and the topology-control algorithms are evaluated in this framework. To the best of our knowledge, this is the first OPNET simulation framework for this type of networks.
机译:可以通过传输功率控制来控制无线多跳网络的拓扑,并且可以以使网络拓扑适应最终用户建立的数据流为目标来执行该控制。通过调整网络拓扑,可以增加网络支持的一组流数据速率,或者,如果流数据速率固定,则可以减少流所经历的端到端延迟。本论文研究的问题是拓扑控制算法的设计,该算法使支持的流量数据率集的大小最大化。该算法的设计分三步进行。第一步,通过排队系统稳定性分析,为固定网络拓扑在数学上表征支持的一组流数据速率。在这一步骤中实现了两个主要贡献。这些是(1)一种用于基于预留的分布式调度(RBDS)策略的新型稳定性分析技术,以及(2)贪婪-最大RBDS(GM-RBDS)策略,该策略在吞吐量方面优于当前可用的策略。文献。第二步,使用GM-RBDS网络支持的一组流量数据速率的数学特征来设计启发式和集中式拓扑控制算法,该算法优于基于空间复用的经典方法。第三步包括分布式拓扑控制算法的设计,该算法也使用流数据速率集的数学特征。这些算法是使用博弈论设计的,并与第二步的集中式拓扑控制进行了比较。确定了这两种方法(即集中式和分布式)均优于另一种的网络方案。最后,本论文还包括电学与研究所的仿真框架的设计,实现和评估。电子工程师(IEEE)802.16无线网状网络,使用优化的网络工程工具(OPNET)。在此框架中评估了GM-RBDS策略和拓扑控制算法。据我们所知,这是用于此类网络的第一个OPNET仿真框架。

著录项

  • 作者

    Vejarano, Gustavo.;

  • 作者单位

    University of Florida.;

  • 授予单位 University of Florida.;
  • 学科 Engineering Computer.;Computer Science.;Engineering Electronics and Electrical.
  • 学位 Ph.D.
  • 年度 2011
  • 页码 189 p.
  • 总页数 189
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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