Modeling and analysis of asynchronous backoff phenomena in IEEE 802.11 distributed coordination function

被引：0
|
作者：
Wu Q.-L. [1 ,2 ]
Lu Y. [1 ]
Ni P. [3 ]
Ge L.-Y. [1 ]
机构：
[1] School of Computer and Information, Hefei University of Technology
[2] Department of Computer Science and Technology, Chaohu College, Chaohu 238000, Anhui Province
[3] GOCOM Information and Technology Co. LTD., Hefei University of Technology
来源：
Yingyong Kexue Xuebao/Journal of Applied Sciences | 2010年 / 28卷 / 03期
关键词：
Analytical model; Distributed coordination function (DCF); IEEE; 802.11; Wireless local area networks;
D O I：
10.3969/j.issn.0255-8297.2010.03.002
中图分类号：
学科分类号：
摘要：
In single-hop wireless local area networks based on the IEEE 802.11 distributed coordination function (DCF) protocol, packet collisions can cause asynchronous backoff among nodes. To analyze the effect of this phenomenon on the throughput of IEEE 802.11 DCF, this paper proposes a new analytic model of three-dimensional Markov chain, in which the unit-time of state transitions have a fixed length equal to the physical-layer slot. The sate transitions of freezing duration are considered. Simulations show that the analytic model is accurate for the two mechanisms of packet transmission employed by IEEE 802.11 DCF, and can lead to better correctness than the referenced model as the number of nodes increases.
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页码：229 / 236
页数：7
相关论文
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