Khái niệm cốt lõi
The author evaluates the performance of ETSI DCC Adaptive Approach and related algorithms in steady state and transitory scenarios, highlighting the importance of congestion control mechanisms in vehicular networks.
Tóm tắt
The content discusses the evaluation of ETSI DCC Adaptive Approach and related algorithms in various scenarios. It covers the impact of different parameters on channel occupancy, message generation rates, packet delivery ratio, inter-packet gaps, and end-to-end delays for CAM messages. The study emphasizes the necessity of congestion control mechanisms to maintain network stability and fair resource allocation.
The results indicate that congestion control is crucial to keep metrics at acceptable levels as vehicle density increases. Different DCC algorithms exhibit varying performances in steady state situations, with Dual-α showing promising results. In transitory scenarios, speed of convergence becomes critical, affecting channel occupation and message generation rates.
Thống kê
Digital Object Identifier: 10.1109/ACCESS.2020.2980377
Average speed for different densities: 10 veh/km per lane - 26.50 m/s; 20 veh/km per lane - 22.33 m/s; 30 veh/km per lane - 16.75 m/s; 40 veh/km per lane - 14.20 m/s; 50 veh/km per lane - 12.45 m/s; 60 veh/km per lane - 11.40 m/s
Trích dẫn
"Results show that a bad selection of parameters can make a DCC algorithm ineffective."
"DCC mechanisms have evolved from a reactive approach based on a finite state machine to an adaptive approach that relies on a linear control algorithm."