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Adaptive Hierarchical Weighted Fair Queuing Scheduling in WiMAX Networks.

机译:WiMAX网络中的自适应分层加权公平排队调度。

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摘要

The growing demand for faster connection to the Internet service and wireless multimedia applications has motivated the development of broadband wireless access technologies in recent years. WiMAX has enabled convergence of mobile and fixed broadband networks through a common wide-area radio-access technology and flexible network architecture. Scheduling is a fundamental component in resource management in WiMAX networks and plays the main role in meeting QoS requirements such as delay, throughput and packet loss for different classes of service.;In this dissertation work, the performance of uplink schedulers at the fixed WiMAX MAC layer has been considered, we proposed an Adaptive Hierarchical Weighted Fair Queuing Scheduling algorithm, the new scheduling algorithm adapts to changes in traffic, at the same time; it is able to heuristically enhance the performance of WiMAX network under most circumstances. The heuristic nature of this scheduling algorithm enables the MAC layer to meet the QoS requirements of the users.;The performance of this adaptive WiMAX Uplink algorithm has been evaluated by simulation using MATLAB. Results indicate that the algorithm is efficient in scheduling the Base Stations' traffic loads, and improves QoS. The utilization of relay stations is studied and simulation results are compared with the case without using relay stations. The results show that the proposed scheduling algorithm improves Quality of Service of WiMAX system.
机译:近年来,对更快地连接到Internet服务和无线多媒体应用程序的需求不断增长,推动了宽带无线接入技术的发展。 WiMAX通过通用的广域无线接入技术和灵活的网络架构,实现了移动和固定宽带网络的融合。调度是WiMAX网络中资源管理的基本组成部分,在满足QoS要求(如不同服务类别的延迟,吞吐量和数据包丢失)方面起着主要作用。本文研究固定WiMAX MAC上的上行调度程序的性能。考虑到层,我们提出了一种自适应分层加权公平排队调度算法,该新调度算法同时适应流量的变化。在大多数情况下,它能够启发性地增强WiMAX网络的性能。该调度算法的启发式性质使MAC层能够满足用户的QoS要求。该自适应WiMAX上行算法的性能已通过使用MATLAB的仿真进行了评估。结果表明,该算法在调度基站的流量负载方面是有效的,并且可以改善QoS。研究了中继站的利用率,并将仿真结果与不使用中继站的情况进行了比较。结果表明,该调度算法提高了WiMAX系统的服务质量。

著录项

  • 作者

    AL-Ghanem, Waleed K.;

  • 作者单位

    Florida Atlantic University.;

  • 授予单位 Florida Atlantic University.;
  • 学科 Computer engineering.
  • 学位 Ph.D.
  • 年度 2014
  • 页码 156 p.
  • 总页数 156
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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