Performance evaluation of the V2I fair access with a finite retry limit
Performance evaluation of the V2I fair access with a finite retry limit
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DOI：
10.1186/s13638-018-1025-5
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发表时间：
2018-01
影响因子：
2.6
通讯作者：
Qiong Wu;H. Zhang;Zhengquan Li;Yang Liu;Cui Zhang
中科院分区：
文献类型：
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作者：
Qiong Wu;H. Zhang;Zhengquan Li;Yang Liu;Cui Zhang
通过建立分析模型，对有限重试限制下的车辆到基础设施（V2I）公平接入性能进行了评估。首先，通过建立一个二维马尔可夫链描述了有限重试限制的分布式协调功能（DCF）机制的实现过程，并基于该马尔可夫链推导了最小窗口和重试限制等接入参数下的传输概率.然后，考虑V2I不公平接入问题，推导出车辆的速度和传输概率之间的关系。基于所提出的模型，给定有限的重试限制，车辆的最小窗口可以根据其速度来确定。仿真结果验证了该模型的有效性，并通过比较评估了有限重试限制下的V2I公平接入性能。
This paper evaluates the performance of the vehicle-to-infrastructure (V2I) fair access with a finite retry limit through constructing an analytical model. Firstly, the process of the distributed coordination function (DCF) mechanism with a finite retry limit is described through developing a 2-D Markov chain; based on the Markov chain, the transmission probability with the access parameters including the minimum window and the retry limit is derived. Then, considering the V2I unfair access problem, the relationship between the velocity and the transmission probability of a vehicle is derived. Based on the proposed model, given a finite retry limit, the minimum window of a vehicle can be determined according to its velocity. In the simulation, the proposed model is justified to be effective and the V2I fair access performance with a finite retry limit is evaluated through comparison.