Strengths and Weaknesses of the ETSI Adaptive DCC Algorithm: A Proposal for Improvement Articles uri icon

publication date

  • May 2019

start page

  • 802

end page

  • 805


  • 5


  • 23

International Standard Serial Number (ISSN)

  • 1089-7798

Electronic International Standard Serial Number (EISSN)

  • 1558-2558


  • This letter studies the adaptive decentralized congestion control (DCC) algorithm defined in the ETSI TS 102 687 V1.2.1 specification. We provide insights on the parameters used in the algorithm and explore the impact of those parameters on its performance. We show how the algorithm achieves good average medium utilization while protecting against congestion, but we also show how the chosen parameters can result in slow speed of convergence and long periods of unfairness in transitory situations. Finally, we propose a modification to the algorithm which results in significant improvements in the speed of convergence and fairness.


  • Telecommunications


  • dcc; vehicular networks; etsi