| 基于802.11e的无线多跳自适应合作式QoS算法 |
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| 引用本文： | 朱颖,武穆清.基于802.11e的无线多跳自适应合作式QoS算法[J].电子学报,2010,38(10):2350-2357. |
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| 作者姓名： | 朱颖 武穆清 |
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| 作者单位： | 北京邮电大学信息与通信工程学院; |
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| 摘 要： | 为解决Ad hoc网络中转发节点拥塞和低优先级业务增多而影响高优先级业务带宽的问题,提出了一种无线多跳网络服务质量保证框架WMHQ(Wireless Multiple Hop QoS)和自适应合作式信道接入算法QAC-EDCA(QoS guaranteed Adaptive Cooperation EDCA).算法将802.11e的优先级区分机制扩展成了三层优先级机制,通过将业务的服务质量需求映射成时隙利用率进行周期性的监测,并以控制帧捎带的方式在两跳范围内传播竞争窗口调整信息,使得高优先级业务具备剥夺低优先级业务带宽的能力和拥塞节点具有协调获取更多带宽的能力.仿真表明,该算法相对802.11e能更好地保护多跳情况下高优先级业务的服务质量.
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| 关 键 词： | 自适应合作 Ad hoc 802.11e 服务质量 时隙利用率 接收避免 优先级 |
| 收稿时间： | 2008-09-01 |
Adaptive Cooperation Algorithm for QoS Guarantee in Multi-hop Transmission Based on 802.11e |
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| ZHU Ying,WU Mu-qing.Adaptive Cooperation Algorithm for QoS Guarantee in Multi-hop Transmission Based on 802.11e[J].Acta Electronica Sinica,2010,38(10):2350-2357. |
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| Authors: | ZHU Ying WU Mu-qing |
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| Affiliation: | ZHU Ying1,WU Mu-qing2(1.School of Information and Communication Engineering,Beijing University of Posts and Telecommunications,Beijing 100876,China,2.School of Information and Communication Engineering,China) |
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| Abstract: | To avoid the transfer congestion and solve the problem of high priority throughput decreasing when low priority data stream increase in Ad hoc,a wireless multi-hop QoS framework and adaptive cooperation channel access algorithm named QAC-EDCA(QoS guaranteed Adaptive Cooperation EDCA) are proposed.QAC-EDCA base on 802.11e and expand its priority differentiation mechanism to three layer priority mechanism.Through mapping the QoS demand into slot utilization for QoS fulfill status judgement and broadcast conte... |
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| Keywords: | adaptive cooperation Ad hoc 802 11e quality of service slot utilization reception avoiding priority |
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