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无线多跳网络中基于区分策略的退避算法 被引量：1

Differentiated Back-off Algorithm in Multi-hop Wireless Networks
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摘要 针对无线多跳网络环境,改进了IEEE 802.11 DCF的二进制指数退避算法,提出一种基于源节点和转发节点区分机制的退避算法。该算法能根据网络冲突状况,自适应地调节退避窗口,更适合多跳网络中流量分布不均的特点。仿真结果表明,该种区分退避机制能同时适应于低速和高速的网络环境,与BEB和AASC两种退避算法相比,在提高网络的吞吐量的同时,也提高了流间的公平性,表现出了更好的网络性能。 This paper proposes a differentiated back-off algorithm for multi-hop wireless networks. The algorithm is developed from two innovative ideas： to reduce the contention in a single flow, it is necessary to reduce the transmission rate of source node; to improve the spatial utility ratio, it is important to reduce the idle slots during transmission. Simulation studies show that the DBA performances better than BEB and AASC for throughput and fairness both in low-load and high-load networks.
作者 李健 王建新
机构地区 中南大学信息科学与工程学院
出处 《计算机工程》 CAS CSCD 北大核心 2008年第1期122-124,共3页 Computer Engineering
基金 国家自然科学基金资助项目(60673164) 湖南省杰出青年基金资助项目(06JJ1009)
关键词 无线多跳 退避算法 IEEE 802.11 wireless multi-hop back-off algorithm IEEE 802.11
分类号 TP393 [自动化与计算机技术—计算机应用技术]
  • 相关文献

参考文献4

  • 1黎宁,韩露.无线自组织网络退避算法综述[J].计算机应用,2005,25(6):1244-1247. 被引量：18
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  • 4Na Chengliang,Zhou Tingxian,Li Lihong,et al.AASC:Adaptive Avoid Second-collision Backoff Algorithm for Multihop Wireless Sensor Networks[C]//Proc.of IEEE International Conference on Mobile Ad-hoc and Sensor Systems.Washington D.C.,USA:[s.n.],2005.

二级参考文献20

  • 1IEEE Standard for Wireless LAN Medium Access Control (MAC)and Physical Layer (PHY) Specifications [ S]. ANSI/IEEE Std 802.11, 1999 Edition, New York, USA, August 1999.
  • 2BHARGHAVAN V, DEMERS A, SHENKER S, et al. MACAW: a media access protocol for wireless LANs [ A]. In Proceedings of ACM SIGCOMM 1994 [ C]. London, U K, September 1994. 212 -225.
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共引文献17

同被引文献7

  • 1Xu S, Saadawi T. Revealing the Problems with 802.11 Medium Access Control Protocol in Multi-hop Wireless Ad Hoc Networks[J]. Computer Networks, 2002, 38(4): 531-548.
  • 2Zhai Hongqiang, Chen Xiang, Fang Yuguang. Improving Transport Layer Performance in Multihop Ad Hoc Networks by Exploiting MAC Layer Information[J]. IEEE Transactions on Wireless Communications, 2007, 6(5): 1692-1701.
  • 3Heusse M, Rousseau F, Guillier R, et al. Idle Sense: An Optimal Access Method for High Throughput and Fairness in Rate Diverse Wireless LANs[C]//Proc. of ACM SIGCOMM'05. Philadelphia, USA: ACM Press, 2005: 121-132.
  • 4Bharghavan V, Demers A, Shenker S, et al. MACAW: A Media Access Protocol for Wireless LAN's[C]//Proc. of ACM SIGCOMM'94. London, UK: ACM Press, 1994: 212-225.
  • 5Pang Qixiang, Liew S C, Lee J Y B, et al. Performance Evaluation of an Adaptive Backoff Scheme for WLAN[J]. Wireless Communications and Mobile Computing, 2004, 4(8): 867-879.
  • 6Chatzimisiosl P, Boucouvalas A C, Vitsas V, et al. A Simple and Effective Backoff Scheme for the IEEE 802.11 MAC Protocol[C]// Proceedings of the Intemational Conference on Cybernetics and Information Technologies, Systems and Applications. Orlando, USA [s. n.], 2005: 45-53.
  • 7李云,陈前斌,隆克平,吴诗其.无线自组织网络中TCP稳定性的分析及改进[J].软件学报,2003,14(6):1178-1186. 被引量：29

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计算机工程
2008年 第1期

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