Performance Modeling and Analysis of the IEEE 802.11p EDCA Mechanism for VANET
Performance Modeling and Analysis of the IEEE 802.11p EDCA Mechanism for VANET
复制标题
VANET IEEE 802.11p EDCA 机制的性能建模和分析
DOI：
10.1109/tvt.2015.2425960
复制
发表时间：
2016-04
影响因子：
6.8
通讯作者：
Qiong Wu
中科院分区：
文献类型：
--
作者：
Jun Zheng;Qiong Wu
本文研究了IEEE 802.11p增强型分布式信道访问（EDCA）机制的性能建模，建立了性能模型，分析了IEEE 802.11p EDCA机制的访问性能。首先构造了一个二维马尔可夫链，对访问类别（AC）队列的退避过程进行建模，建立了AC队列的传输概率与碰撞概率之间的关系。然后构造一维离散马尔可夫链。建立了交流队列争用周期的模型，建立了传输概率与碰撞的关系。AC队列的概率。与大多数已有的研究不同，本文将一维马尔可夫链扩展为无穷大，用于模拟交流队列在饱和和非饱和条件下的争用周期。这两种马尔可夫模型考虑了可能影响IEEE 802.11p EDCA机制访问性能的所有主要因素，包括饱和条件、标准参数、后退计数器冻结和内部碰撞。在这两种马尔可夫模型的基础上，进一步推导了性能模型，分别从传输概率、碰撞概率、归一化吞吐量和平均访问延迟等方面描述了AC队列参数与AC队列访问性能之间的关系。仿真结果验证了性能模型的有效性。
This paper studies performance modeling of the IEEE 802.11p enhanced distributed channel access (EDCA) mechanism and develops performance models to analyze the access performance of the IEEE 802.11p EDCA mechanism. A 2-D Markov chain is first constructed to model the backoff procedure of an access category (AC) queue and establish a relationship between the transmission probability and collision probability of the AC queue. Then, a 1-D discrete-time Markov chain is constructed to.model the contention period of an AC queue and establish another relationship between the transmission probability and collision.probability of the AC queue. Unlike most existing work, the 1-D Markov chain is extended to be infinite in modeling the contention period of an AC queue under both saturated and nonsaturated conditions. The two Markov models take into account all major factors that could affect the access performance of the IEEE 802.11p EDCA mechanism, including the saturation condition, standard parameters, backoff counter freezing, and internal collision. Based on the two Markov models, performance models are further derived to describe the relationships between the parameters of an AC queue and the access performance of the AC queue in terms of the transmission probability, collision probability, normalized throughput, and average access delay, respectively. The effectiveness of the performance models are verified through simulation results.
登录
查看更多内容
影响因子：
16.4
作者：
Z. Kong;D. Tsang;B. Bensaou;D. Gao
通讯作者：
Z. Kong;D. Tsang;B. Bensaou;D. Gao
DOI：
10.1109/vtcfall.2012.6399249
发表时间：
2012-12
期刊：
2012 IEEE Vehicular Technology Conference (VTC Fall)
影响因子：
--
作者：
F. Peng;K. Shafiee;Victor C. M. Leung
通讯作者：
F. Peng;K. Shafiee;Victor C. M. Leung
DOI：
10.1109/msn.2010.39
发表时间：
2010-12
期刊：
2010 Sixth International Conference on Mobile Ad-hoc and Sensor Networks
影响因子：
--
作者：
Faouzi Kaabi;Pasquale Cataldi;F. Filali;C. Bonnet
通讯作者：
Faouzi Kaabi;Pasquale Cataldi;F. Filali;C. Bonnet
DOI：
--
发表时间：
2008
期刊：
--
影响因子：
--
作者：
I. Hwang;Hsin-Hao Chang
通讯作者：
I. Hwang;Hsin-Hao Chang
影响因子：
10.4
作者：
Hua Zhu;I. Chlamtac
通讯作者：
Hua Zhu;I. Chlamtac