AoI-Aware and Persistence-Driven Congestion Control in 5G NR-V2X Sidelink Communications


Congestion control in 5G New Radio (NR) Vehicle- to-Everything (V2X) sidelink communications is a challenging task, mainly due to the distributed nature of the Semi-Persistent Scheduling (SPS) algorithm used in Mode 2 operation. In this paper, we define an adaptive algorithm to set SPS parameters so as to minimize the average Age of Information (AoI) of cooperative awareness messages. The algorithm is based on insights gained from an analytical model of SPS, and its performance is evaluated through simulations. We present initial simulation results demonstrating the convergence and precision of the proposed algorithm, which allows for the rapid attainment of optimal values of Channel Busy Ratio (CBR) and AoI.

22nd Mediterranean Communication and Computer Networking Conference (MedComNet 2024)
Ion Turcanu
Ion Turcanu
Research and Technology Associate

My research interests include communications protocols for multi-technology vehicular networks, time-sensitive networking for in-vehicle communications, and next-generation cellular networks.