Performance analysis of IEEE 802.11e contention-based channel access
Performance analysis of IEEE 802.11e contention-based channel access
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DOI：
10.1109/jsac.2004.836019
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发表时间：
2004-11
影响因子：
16.4
通讯作者：
Z. Kong;D. Tsang;B. Bensaou;D. Gao
中科院分区：
文献类型：
--
作者：
Z. Kong;D. Tsang;B. Bensaou;D. Gao
新标准IEEE 802.11e被指定为支持无线局域网中的服务质量。本文对IEEE802.11e中的基本媒体接入控制机制--增强型分布式信道接入（EDCA）的性能进行了全面的研究。我们提出了我们的发展的分析模型，其中最新的功能，如虚拟碰撞，不同的仲裁帧间空间（AIFS），和不同的竞争窗口的EDCA考虑。基于该模型，我们分析了区分服务业务的吞吐量性能，并提出了一种能够计算平均接入延迟的递归方法。服务区分功能和有效性的EDCA进行了研究，通过广泛的数值和仿真结果。该模型和分析提供了对协议以及不同参数对性能的影响的深入理解和见解。
The new standard IEEE 802.11e is specified to support quality-of-service in wireless local area networks. A comprehensive study of the performance of enhanced distributed channel access (EDCA), the fundamental medium access control mechanism in IEEE 802.11e, is reported in this paper. We present our development of an analytical model, in which most new features of the EDCA such as virtual collision, different arbitration interframe space (AIFS), and different contention window are taken into account. Based on the model, we analyze the throughput performance of differentiated service traffic and propose a recursive method capable of calculating the mean access delay. Service differentiation functionality and effectiveness of the EDCA are investigated through extensive numerical and simulation results. The model and the analysis provide an in-depth understanding and insights into the protocol and the effects of different parameters on the performance.