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IEEE 802.11 DCF中帶優(yōu)先級(jí)的退避算法

嚴(yán)少虎 卓永寧 吳詩(shī)其 郭偉

嚴(yán)少虎, 卓永寧, 吳詩(shī)其, 郭偉. IEEE 802.11 DCF中帶優(yōu)先級(jí)的退避算法[J]. 電子與信息學(xué)報(bào), 2005, 27(8): 1315-1319.
引用本文: 嚴(yán)少虎, 卓永寧, 吳詩(shī)其, 郭偉. IEEE 802.11 DCF中帶優(yōu)先級(jí)的退避算法[J]. 電子與信息學(xué)報(bào), 2005, 27(8): 1315-1319.
Yan Shao-hu, Zhuo Yong-ning, Wu Shi-qi, Guo Wei. Priority BackoffAlgorithm for IEEE 802.11 DCF[J]. Journal of Electronics & Information Technology, 2005, 27(8): 1315-1319.
Citation: Yan Shao-hu, Zhuo Yong-ning, Wu Shi-qi, Guo Wei. Priority BackoffAlgorithm for IEEE 802.11 DCF[J]. Journal of Electronics & Information Technology, 2005, 27(8): 1315-1319.

IEEE 802.11 DCF中帶優(yōu)先級(jí)的退避算法

Priority BackoffAlgorithm for IEEE 802.11 DCF

  • 摘要: 該文針對(duì)IEEE 802.11 DCF提出一個(gè)帶優(yōu)先級(jí)的退避算法.算法的基本思想是網(wǎng)絡(luò)中的節(jié)點(diǎn)在偵聽(tīng)信道的同時(shí),搜集其他節(jié)點(diǎn)發(fā)送數(shù)據(jù)的統(tǒng)計(jì)信息,并在本地維護(hù)一個(gè)關(guān)于節(jié)點(diǎn)已發(fā)送數(shù)據(jù)量的統(tǒng)計(jì)表.當(dāng)節(jié)點(diǎn)有數(shù)據(jù)需要發(fā)送時(shí),將根據(jù)表中的統(tǒng)計(jì)數(shù)據(jù)以及本節(jié)點(diǎn)的優(yōu)先級(jí)來(lái)計(jì)算競(jìng)爭(zhēng)窗口.計(jì)算機(jī)仿真證明,該算法能很好地完成網(wǎng)絡(luò)的信道容量在不同優(yōu)先級(jí)的節(jié)點(diǎn)之間按一定的比例分配,同時(shí)還可提高整個(gè)網(wǎng)絡(luò)的吞吐率.
  • Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications, IEEE Standard 802.11- 1999, IEEE Computer Society LAN MAN Standards Committee, Ed., 1999.[2]Binachi G. Performance Analysis of the IEEE 802.11 distributed coordination function. IEEE J. on Selected 4reas in Comm.,2000, 18(3): 535- 547.[3]Tay Y C, Chua K C. A capacity analysis for the IEEE 802.11MAC protocol. Wireless Networks, 2001, 7(2): 159 - 171.[4]Natkaniec M, Pach A R. An analysis of the backoff mechanism used in IEEE 802.11 networks, Proceedings of Fifth IEEE Symposium on Computers and Communications, ISCC 2000,Antibes, France, July, 2000:444 - 449.[5]Byung-Jae K, Nah-Oak S, Miller L E. Analysis of the stability and performance of exponential backoff. Wireless Communications and Networking Conference, WCNC 2003, New Orleans,Louisiana, USA, 16-20 Mar. 2003, Vol. 3:1754 - 1759.[6]Bononi L, Conti M, Gregori E. Design and performance evaluation of an asymptotically optimal backoff algorithm for IEEE 802.11 wireless LANs. Proceedings of HICSS-33, Maui,Hawaii, Jan. 4-7, 2000:3049 - 3058.[7]Bharghavan V.[J].Demaers A, Shenker S, Zhang L. MACAW: A media access protocol for wireless LANs. Proceedings of ACM SIGCOMM94, London, UK, Aug. 31-Sep.1994,2:-[8]Yang Xiao. Backoff-based Priority Schemes for IEEE 802.11.IEEE International Conference on Communications, ICC 2003,11-15 May, 2003, Vol.3:1568 - 1572.[9]Yan Shaohu, Zhuo Yongning, Wu Shiqi, Guo Wei. Adaptive RTS threshold for maximum network throughput in IEEE 802.11DCF, Proceedings of SPIE, the International Society for Optical Engineering, 2004, Vol. 5284:332 - 343.[10]http:∥www.isi.edu/nsnam/and related web pages it linked.
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  • 收稿日期:  2004-03-08
  • 修回日期:  2004-08-11
  • 刊出日期:  2005-08-19

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