Buffering time optimization for path tracking accuracy in remote vehicle control with digital twin computing

Abstract

On path tracking control of vehicles via the Internet, transmission delay and jitter prevent them from tracking a target path accurately. To improve the control accuracy, it is effective to apply digital twin computing and jitter buffer to the control system. The control system with jitter buffer has an issue of optimizing buffering time. Through simulations by using some realistic transmission delay models, we quantitatively evaluated the control accuracy depending on the buffering time. As a result, we showed that buffered packet rate (BPR) can be a key index to optimize the buffering time according to transmission delay.