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Crosslayer design for medium access control in wireless ad hoc networks.

机译:无线ad hoc网络中用于媒体访问控制的跨层设计。

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摘要

This dissertation focuses on cross layer design for network protocols in wireless ad hoc networks. It studies the relationship between link scheduling at medium access control layer and physical or network layer. Link scheduling is a way of achieving the optimal MAC layer throughput while avoiding collisions. In this dissertation, it is modeled using graph theory concepts based on different interference model. MAC layer is served as an anchoring layer in our cross layer design which can collect physical layer information and provide information to network layer. Cross layer design between MAC layer and physical layer or routing layer can provide better overall system performance.;The dissertation will discuss how the carrier sensing threshold, a physical layer parameter, impact the link scheduling strategy in order to achieve the optimal aggregate throughput at MAC layer. The dissertation will also investigate the joint routing and link scheduling problem using a graph theory based model. Further more, since solving the above joint design problems is usually NP-hard, we propose polynomial solutions for estimating the bounds for network capacity. In an effort to design MAC layer solution for real systems, we propose an opportunistic MAC for multichannel multiradio wireless networks which utilizes multiradio diversity at physical layer as well.
机译:本文主要研究无线自组织网络中网络协议的跨层设计。它研究了介质访问控制层与物理或网络层之间的链路调度之间的关系。链路调度是一种在避免冲突的同时实现最佳MAC层吞吐量的方法。本文采用图论的概念,基于不同的干扰模型对模型进行建模。在我们的跨层设计中,MAC层用作锚定层,它可以收集物理层信息并将信息提供给网络层。 MAC层与物理层或路由层之间的跨层设计可以提供更好的整体系统性能。论文将讨论载波侦听阈值,物理层参数如何影响链路调度策略,以实现MAC处的最佳聚合吞吐量层。本文还将使用基于图论的模型研究联合路由和链路调度问题。此外,由于解决上述联合设计问题通常对NP困难,因此我们提出了多项式解决方案来估算网络容量的界限。为了设计用于实际系统的MAC层解决方案,我们提出了一种用于多通道多无线电无线网络的机会MAC,它也在物理层也利用了多无线电分集。

著录项

  • 作者

    Chen, Feng.;

  • 作者单位

    University of Florida.;

  • 授予单位 University of Florida.;
  • 学科 Engineering Electronics and Electrical.;Computer Science.
  • 学位 Ph.D.
  • 年度 2009
  • 页码 129 p.
  • 总页数 129
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

  • 入库时间 2022-08-17 11:38:24

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