Improving Information Age in SAE J2945 Congestion-Controlled Beaconing

Sungheon Lim, Hyogon Kim

Research output: Contribution to journalArticle

Abstract

The Society of Automotive Engineers (SAE) J2945 standard prescribes a wireless channel congestion control algorithm for Basic Safety Messages (BSMs) in vehicular safety communication. The algorithm utilizes transmit (Tx) power and rate controls, but we find that the Tx power control hardly engages in most practical vehicular traffic densities. We explain the cause, and propose an alternative way to utilize both control mechanisms. Specifically, we suggest that the Tx power control be first exerted to its limit, followed by the Tx rate control coping with further congestion. We show that the proposed alternative not only addresses the inadequate power control issue, but also leads to better information age performance for vehicles in the most safety-critical distances.

Original languageEnglish
JournalIEEE Communications Letters
DOIs
Publication statusAccepted/In press - 2018 Jan 1

Fingerprint

Power Control
Congestion
Power control
Engineers
Rate Control
Safety
Congestion control (communication)
Congestion Control
Alternatives
Control Algorithm
Communication
Traffic

Keywords

  • BSM
  • congestion control
  • Heuristic algorithms
  • information age
  • Kinematics
  • Meters
  • Power control
  • SAE J2945
  • Safety
  • Schedules
  • Standards
  • Tx power control

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

Improving Information Age in SAE J2945 Congestion-Controlled Beaconing. / Lim, Sungheon; Kim, Hyogon.

In: IEEE Communications Letters, 01.01.2018.

Research output: Contribution to journalArticle

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