无线自组织网络中可用带宽估计准则研究  

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

作　　者：宋安[1] 赵海涛[1] 王杉[1] 魏急波[1] 

机构地区：[1]国防科学技术大学电子科学与工程学院,湖南长沙410073

出　　处：《计算机工程与科学》2011年第10期9-14,共6页Computer Engineering & Science

基　　金：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)

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。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 accu- racy of the analytical model and the validity of the criteria of available bandwidth estimation.

关 键 词：IEEE 802.11 非饱和 可用带宽 服务质量 

分 类 号：TN926[电子电信—通信与信息系统]