Enhancing ETSI DCC for multi-service vehicular safety communication

Khan, Mohammad Irfan; Härri, Jérôme; Sesia, Stefania
VTC 2020-Fall, IEEE 92nd Vehicular Technology Conference,
4–7 October, 2020, Victoria, BC, Canada

ETSI Decentralized Congestion Control (DCC) for vehicular communication is an essential mechanism for limiting wireless channel congestion and resource allocation of ad-hoc V2X communications. Standardized channel congestion control protocols have been designed considering mostly a single message for cooperative awareness such as CAM/BSM, while future automated vehicles will exchange additional messages, including sensor data, control information, HD-maps etc. In this paper we evaluate and improve the performance of the state-machine based DCC standardized in Europe by ETSI. We highlight the channel capacity under-utilization and the communication quality degradation, and propose three design improvements to enhance its performance. Simulation based evaluation, considering multiple standardized safety messages
on a single channel, proves the performance improvement due to our proposed modifications, almost doubling the reception throughput for dense V2X communication scenarios.

Systèmes de Communication
Eurecom Ref:
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