Performance Optimization of Cluster-Based MAC Protocol for VANETs

被引：20

作者：

Shah, A. F. M. Shahen ^{[1
]}

Karabulut, Muhammet Ali ^{[2
]}

Ilhan, Haci ^{[2
]}

Tureli, Ufuk ^{[2
]}

机构：

[1] Istanbul Gelisim Univ, Elect & Elect Engn Dept, TR-34310 Istanbul, Turkey

[2] Yildiz Tech Univ, Elect & Commun Engn Dept, TR-34220 Istanbul, Turkey

来源：

IEEE ACCESS | 2020年 / 8卷 / 167731-167738期

关键词：

Throughput; Delays; Media Access Protocol; Optimization; Vehicular ad hoc networks; Simulation; Clustering; CB-MAC; optimization; VANETs;

D O I：

10.1109/ACCESS.2020.3023642

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Recently, a novel cluster-based medium access control (CB-MAC) protocol has been proposed for vehicular ad hoc networks (VANETs). Though performance of CB-MAC protocol is affected by cluster size, no mechanism is provided to manage cluster size efficiently. In this paper, the performance of CB-MAC protocol is optimized for VANETs by optimizing transmission probability with cluster size. Each vehicle should adopt the optimum transmission probability in the cluster which can be obtained by tuning the number of clusters in VANET. Therefore, optimum number of clusters is defined based on the number of vehicles in VANETs. An analytical study based on Markov chain model is provided. Optimum transmission probability, and optimum number of clusters expressions are derived. The microscopic mobility model is generated in SUMO for practical scenario. Simulation results are presented which verify analytical (theoretical) analysis and show that the performance of CB-MAC protocol is maximized in terms of throughput, packet dropping rate (PDR), and delay. Throughput is remarkably increased, whereas PDR and delay are decreased.

引用

页码：167731 / 167738

页数：8

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