LWIP跨层优化设计与算法仿真
首发时间:2007-12-07
摘要:本文介绍了LWIP的形成、特性、模块、移植,以及LWIP跨层优化实验平台的设计,各模块的组成和实现的相关功能。本论文主要完成的工作是LWIP跨层优化实验平台中信息统计模块和调度器性能的分析,主要借助基于Linux操作系统下C语言的编程开发工具QT来完成这些工作。信息统计模块的设计主要是对调度器各种算法的一些统计量进行统计,进而分析它们的性能。无线分组调度是保证无线传输业务服务质量的一个重要方面,本文还讨论了Round Robin、Max C/I和Proportional Fairness三种调度算法,并结合实验平台的统计模块和调度器模块从吞吐量、时延等方面对三种算法的性能做了分析、比较,通过使用Linux平台下的QT开发工具把三种算法的性能通过计算机仿真以图形的方式直观地呈现出来,而通过这种直观的比较三种算法各方面的性能优劣一目了然。
关键词: LWIP 分组调度 轮询算法(RoundRobin) 最大载干比调度(MaxC/I) 正比公平调度(Proportional Fairness) QT
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Design Realization of the optimized platform of LWIP And Algorithm simulation
Abstract:In this paper, firstly, the author introduces the formation, characteristics, module, transplant of LWIP and the design, formation and function of every module in the optimized platform of LWIP. The major work of the design is the design of the statistic module on information and the capability analysis of the scheduler. And the work is fulfilled by the QT exploitation tools which are based on the Linux operating system. The statistic module on information is designed to get the statistics of the scheduler’s algorithms, and then analyze the capability of them. Wireless packet scheduling algorithms is an important aspect to guarantee the QOS of wireless transfers operation. What’s more, the author discusses the three algorithms: Round Robin, Max C/I and Proportional Fairness, and analyses the capabilities of them in the experiment platform. Using the QT, we can use graphics which is produced by the Computer Simulation to evaluate the capabilities of the three algorithms directly, for example the throughput, packet delay and so on, and then we can judge which the best is.
Keywords: lwip, round robin, max c/I, proportional fairness, qt
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