• 中国计算机学会会刊
  • 中国科技核心期刊
  • 中文核心期刊

J4 ›› 2011, Vol. 33 ›› Issue (10): 9-14.

• 论文 • 上一篇    下一篇

无线自组织网络中可用带宽估计准则研究

宋安,赵海涛,王杉,魏急波   

  1. (国防科学技术大学电子科学与工程学院,湖南 长沙 410073)
  • 收稿日期:2011-03-11 修回日期:2011-06-24 出版日期:2011-10-25 发布日期:2011-10-25
  • 作者简介:宋安(1981),男,四川江油人,博士生,研究方向为无线网络性能分析与可用带宽估计。赵海涛(1981),男,山东昌乐人,博士,讲师,研究方向为无线通信网络和认知网络。王杉(1978),男,陕西兴平人,博士,讲师,研究方向为移动自组织网络和宽带通信网络。魏急波(1967),男,湖北汉川人,博士,教授,研究方向为宽带无线通信与网络。
  • 基金资助:

    国家自然科学基金资助项目(61002032);教育部博士点基金资助项目(20094307110004)

Research of the Criteria of Available Bandwidth Estimation in Wireless Ad Hoc Networks

SONG An,ZHAO Haitao,WANG Shan,WEI Jibo   

  1. (School of Electronics Science and Engineering,
    National University of Defense Technology,Changsha 410073,China)
  • Received:2011-03-11 Revised:2011-06-24 Online:2011-10-25 Published:2011-10-25

摘要:

本文对无线Ad Hoc网络中可用带宽估计准则进行了研究,提出应将全局QoS保障作为带宽需求是否能被网络满足的判定条件。建立了基于IEEE 802.11 MAC协议的无线网络的分析模型并得出了时延、丢包率和吞吐量等QoS度量的解析表达式,并给出了该网络环境下的可用带宽判定准则。仿真实验证明了本文提出的分析模型的精确性与可用带宽估计准则的合理性。

关键词: IEEE 802.11, 非饱和, 可用带宽, 服务质量

Abstract:

The criteria of available bandwidth estimation in wireless ad hoc networks are studied and the standard in judging the feasibility of bandwidth requirements is proposed where the overall QoS provision should be taken into consideration. An analytical model of IEEE 802.11based wireless networks is built and the QoS metrics such as delay, packet loss ratio and throughput are derived, and based on which the detailed criteria of available bandwidth estimation are presented. Simulations verify the accuracy of the analytical model and the validity of the criteria of available bandwidth estimation.

Key words: IEEE 802.11;nonsaturation;available bandwidth;quality of service