| IEEE802．11eWLAN中基于HCCA机制的带宽分配算法的研究 |
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| 引用本文： | 张郭,陈雪,张民.IEEE802．11eWLAN中基于HCCA机制的带宽分配算法的研究[J].电信工程技术与标准化,2008,21(12):39-45. |
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| 作者姓名： | 张郭 陈雪 张民 |
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| 作者单位： | 北京邮电大学光通信与光波技术教育部重点实验室,北京,100876 |
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| 基金项目： | 国家高技术研究发展计划(863计划)
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高等学校学科创新引智计划
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教育部长江学者和创新团队发展计划
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教育部留学归国人员教学、科研建设项目
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| 摘 要： | 随着使用WLAN（无线局域网）接入因特网的日渐普及，IEEE802．11eWLAN中的HCCA（混合控制信道接入）机制由于在处理实时多媒体业务的高效率受到越来越广泛的关注。在WLAN中为达到高带宽利用率和良好的端到端QoS，介绍了一种基于HCCA机制的带宽分配算法，同时对该算法与802．11PCF（点协调功能）两种接入场景下的网络性能进行仿真比较，其结果验证了该算法可以为WLAN提供良好的QoS保证，对在WLAN中传输语音、视频等实时业务具有一定的指导意义。
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| 关 键 词： | 无线局域网 服务质量 混合控制信道按入 |
Scheme of Dynamic Bandwidth Assignment Based on HCCA in 802.11e WLAN |
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| Zhang Guo,Chen Xue,Zhang Min.Scheme of Dynamic Bandwidth Assignment Based on HCCA in 802.11e WLAN[J].Telecom Engineering Technics and Standardization,2008,21(12):39-45. |
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| Authors: | Zhang Guo Chen Xue Zhang Min |
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| Affiliation: | (Dept. of Opt. Commun. ＆ Lightwave Technol., School of Telecommunications Engineering, Beijing University of Posts and Telecommunications, Beijing 100876) |
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| Abstract: | With the increasing popularity of using WLAN for Interact access, the HCCA mechanism in IEEE 802.11 e WLAN had received much more attention due to its high efficiency in handling real-time multimedia traffic. To achieve high bandwidth utilization and good end-to-end QoS in WLAN an algorithm of bandwidth allocation based on HCCA is proposed. Performance of the proposed algorithm was analyzed compared to the 802.11 PCF mechanism, and the simulation results demonstrate that the algorithm can provide a good guarantee of QoS for WLAN and has a guiding significance in the transmission of voice, video and other real-time business over WLAN. |
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| Keywords: | WLAN QoS HCCA |
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