An energy efficient message dissemination scheme in platoon-based driving systems

Taeyoon Kim, Taewon Song, Sangheon Pack

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number3940
JournalEnergies
Volume13
Issue number15
DOIs
Publication statusPublished - 2020 Aug

Keywords

  • Autonomous driving
  • Connected car
  • Energy efficiency
  • Markov chain
  • Markov decision process
  • Message dissemination
  • Platoon-based driving
  • Vehicular network

ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Energy Engineering and Power Technology
  • Energy (miscellaneous)
  • Control and Optimization
  • Electrical and Electronic Engineering

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