IEEE 802.11e EDCA多优先级混合时隙传输方法

计算机科学 ›› 2013, Vol. 40 ›› Issue (12): 156-159.

IEEE 802.11e EDCA多优先级混合时隙传输方法

王万良,岑跃峰,姚信威

浙江工业大学计算机科学与技术学院杭州310023;浙江工业大学计算机科学与技术学院杭州310023;浙江工业大学计算机科学与技术学院杭州310023

出版日期:2018-11-16 发布日期:2018-11-16
基金资助:
本文受国家自然科学基金项目(61070043)资助

Multi-priority Hybrid Slot Transmission Method Based on IEEE 802.11e EDCA

WANG Wan-liang,CEN Yue-feng and YAO Xin-wei

Online:2018-11-16 Published:2018-11-16

摘要/Abstract

摘要： 针对无线局域网中各种多媒体数据业务对传输QoS的不同需求,在IEEE 802.11e EDCA机制的基础上提出了一种多优先级混合时隙传输方法。该方法规定一段时间为一个混合时隙,期间包含的时隙数小于等于业务的种类数,各业务按照传输QoS的需求组合分配到不同优先级的时隙中进行传输,从而调节不同传输QoS需求业务在数据链路层的碰撞概率。与传统的IEEE 802.11e EDCA机制相比,多优先级混合时隙传输方法降低了站点之间的碰撞概率,提高了需求业务的吞吐量、丢包率、媒质访问延迟等网络性能指标。对于站点变动较大的网络,其具有较强的抗扰动性。

关键词: 多优先级,混合时隙,EDCA,饱和,非饱和

Abstract: To support the different needs of transmission Qualities of Service (QoS) in local multimedia networks,a multi-priority hybrid slot transmission method based on IEEE 802.11e Enhanced Distributed Channel Access (EDCA) protocol was proposed．A hybrid slot is defined which includes some slots and the number of slots in it is less than or equal to the kinds of access categories．The access categories are assigned to the different priority slots according to the transmission QoS requirements．The collision probabilities of access categories with different QoS requirements in the data link layer can be fixed easily．The collision probabilities between the stations are significantly reduced,and the network qualities of the access categories with high transmission QoS needs such as throughput,drop rates,media access delay are improved compared with the traditional EDCA protocol．The multi-priority hybrid slot transmission method reveals a good adaptability to the station changes in the networks．It shows a better performance especially when the stations increase.

Key words: Multi-priority,Hybrid slot,EDCA,Saturated,Unsaturated

王万良,岑跃峰,姚信威. IEEE 802.11e EDCA多优先级混合时隙传输方法[J]. 计算机科学, 2013, 40(12): 156-159. https://doi.org/

WANG Wan-liang,CEN Yue-feng and YAO Xin-wei. Multi-priority Hybrid Slot Transmission Method Based on IEEE 802.11e EDCA[J]. Computer Science, 2013, 40(12): 156-159. https://doi.org/

参考文献

[1] 董超,陈贵海,王海．无线网状网的QoS研究[J].软件学报,2009,20(6):1539-1552
[2] 李文新,李宇光,胡延苏,等．嵌入式无线局域网中H.264视频传输的QoS研究[J]．计算机科学,2011,38(5):83-85
[3] IEEE 802.11e．Wireless LAN Media Control(MAC) and physical layer(PHY) specifications[S]．2005
[4] Chen Yeong-sheng,Lee Yuan-wei,Hyuk P J．Enhanced HCCA mechanism for multimedia traffics with QoS support in IEEE802.11e networks[J]．Journal of Network and Computer Application,2011,34(5):1566-1571
[5] 葛永明,朱艺华,龙胜春,等．IEEE802.11移动自组织网络节点竞争窗口长度的概率分布[J]．电子学报,2010,38(8):1841-1844
[6] 陈晨,高新波,张素兵,等．无线局域网中TXOP动态分配方法[J]．计算机工程,2010,37(7):11-13
[7] Hu Jia,Min Ge-yong,Jia Wei-jia,et al．Comprehensive QoS a-nalysis of enhanced distributed channel access Comprehensive QoS analysis of enhanced distributed channel access in wireless local area networks[J]．Information Sciences,2012,214(10):20-34
[8] 康凯,胡海波,林孝康．一种新的用于IEEE 802.11e EDCA中提供QOS的方法[J]．电子与信息学报,2007,29(12):2991-2995
[9] Yao Xin-wei,Wang Wan-liang,Yang Shuang-hua,et al．PABM-EDCF:parameter adaptive bi-directional mapping mechanism for video transmission over WSNs[J]．Multimedia Tools and Applications,2011,9(4):378-387
[10] 杜建超,吴嵩,吴成柯．一种基于EDCA的视频数据包动态映射算法[J]．电子与信息学报,2012,34(1):46-50
[11] Bianchi G．Performance analysis of the IEEE 802.11distributed coordination function [J]．Selected Areas in Communications,2000,18(3):535-547
[12] 张勇,谭小彬,崔孝林,等．基于Markov博弈模型的网络安全态势感知方法[J].软件学报,2011,22(3):495-508
[13] 张伟．IEEE 802.11e的网络性能、容量评估与资源分配策略研究[D]．上海:上海交通大学,2008

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