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IEEE802.11无线局域网中一种支持业务区分的回退算法 被引量：10

A Novel Service Differentiated Backoff Algorithm in IEEE 802.11 WLAN
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摘要 支持QoS的MAC机制是WLAN支持QoS的关键所在.我们已经给出了一种低分组碰撞概率的MAC层回退机制———RWBO+BEB.该文进一步讨论如何让RWBO+BEB支持业务区分的问题.首先提出了一个Markov链模型,分析如何根据无线终端的带宽比率设置最小竞争窗口,然后给出了一种新的支持业务区分的回退算法———DS-RWBO,仿真结果表明,DS-RWBO能根据局域网中每个终端的带宽比率分配无线信道的带宽资源. It is essential to design QoS supported MAC mechanism for supporting QoS in wireless LAN. We have proposed a new backoff algorithm, names RWBO ＋ BEB, to dramatically decrease the packet collision probability. In this paper, we explore how to make RWBO ＋ BEB support service differentiation. A Markov model is proposedto analyze how to choose the minimum contention windows according to the bandwidth ratios of stations. Based on the analysis, a novel service differentiated backoff algorithm for IEEE 802.11 DCF,named DS-RWBO,is proposed. The simulation results indicate that DS-RWBO can allocate the wireless bandwidth according to the bandwidth ratio of each station.
作者 李云 隆克平 赵为粮 陈前斌
机构地区 重庆邮电学院光互联网及无线信息网络研究中心 电子科技大学光互联网及移动信息网络研究中心
出处 《电子学报》 EI CAS CSCD 北大核心 2006年第10期1877-1880,共4页 Acta Electronica Sinica
基金 国家自然科学基金(No.90304004) 教育部新世纪优秀人才支持计划基金(NCET) 重庆市教委项目(No.KJ050503) 重庆市科委项目(No.8817)
关键词 IEEE802.11 无线局域网 业务区分 DS-RWBO IEEFS02.11 wireless LAN service differentiation service differentiated RWBO
分类号 TN92 [电子电信—通信与信息系统]
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参考文献16

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二级参考文献10

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共引文献9

同被引文献66

引证文献10

二级引证文献22

电子学报
2006年 第10期

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