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

Authors
Kim, TaeyoonSong, TaewonPack, Sangheon
Issue Date
8월-2020
Publisher
MDPI
Keywords
autonomous driving; connected car; energy efficiency; Markov chain; Markov decision process; message dissemination; platoon-based driving; vehicular network
Citation
ENERGIES, v.13, no.15
Indexed
SCIE
SCOPUS
Journal Title
ENERGIES
Volume
13
Number
15
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/54221
DOI
10.3390/en13153940
ISSN
1996-1073
Abstract
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.
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공과대학 (전기전자공학부)
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