The congestion control for the sidelink communication in cellular vehicle-to-everything (LTE-V2X) environment is only at the fledgling stage in terms of standardization. This paper shows that the current specifications fail to adequately control the channel busy ratio (CBR) under heavy channel loads. To solve the problem, a new CBR-channel occupancy ratio (CR)-limit mapping is proposed. A control function that more reliably adjusts the transmission rates of the vehicles to the desirable target CBR range while achieving improved fairness is also proposed.
Bibliographical noteFunding Information:
This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2020R1A2C3011888).
© 2021 The Authors. Electronics Letters published by John Wiley & Sons Ltd on behalf of The Institution of Engineering and Technology
ASJC Scopus subject areas
- Electrical and Electronic Engineering