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Open AccessArticle

An Energy Efficient Message Dissemination Scheme in Platoon-Based Driving Systems

1
Department of Smart-car, Soonchunhyang University, 22 Soonchunhyang-ro, Shinchang-myeon, Asan-si, Chungcheongnam-do 31538, Korea
2
IoT Connectivity Standard Team, LG Electronics, 19, Yangjae-daero 11-gil, Seocho-gu, Seoul 06772, Korea
3
The School of Engineering, Korea University, 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
*
Author to whom correspondence should be addressed.
Energies 2020, 13(15), 3940; https://doi.org/10.3390/en13153940
Received: 29 June 2020 / Revised: 25 July 2020 / Accepted: 27 July 2020 / Published: 1 August 2020
(This article belongs to the Section Smart Grids and Microgrids)
With the development of the convergence of IT and automotive technology, platoon-based driving systems are getting more attention and how to disseminate messages in the platoon is an important issue. In this paper, to enhance the energy efficiency and traffic throughput (e.g., average velocity) while meeting transmission deadlines, we propose an energy efficient message dissemination scheme (EMDS) in platoon-based driving systems, which also provides proper power control and relay selection. To find out the optimal policy to balance the probability of successful message dissemination and transmission power cost in EMDS, we formulate a Markov decision process (MDP) problem that considers the velocity of the vehicles in the platoon. To evaluate the performance of EMDS, we analyze the outage probability, the average velocity, and the expected power consumption using the discrete-time Markov chain (DTMC) model. Evaluation results demonstrate EMDS with the optimal policy improves the average velocity and the energy efficiency of message dissemination compared with the conventional message dissemination schemes, while reducing the message dissemination failure rate. View Full-Text
Keywords: autonomous driving; connected car; energy efficiency; Markov chain; Markov decision process; message dissemination; platoon-based driving; vehicular network autonomous driving; connected car; energy efficiency; Markov chain; Markov decision process; message dissemination; platoon-based driving; vehicular network
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MDPI and ACS Style

Kim, T.; Song, T.; Pack, S. An Energy Efficient Message Dissemination Scheme in Platoon-Based Driving Systems. Energies 2020, 13, 3940.

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