Demonstration of Real-Time Jitter Buffered Architecture for Motion Control in All-Photonics Network.

Although demand has been increasing for accurate remote motion control of IoT devices, jitter can negatively impact control performance. Jitter buffering has been studied as a solution, but it is necessary to obtain delay values in real-time. In this study, we propose an architecture that uses collected network information to realize jitter buffering suitable for user-managed IoT device control applications in the All-Photonics Network. The architecture collects end-to-end delay values in real-time, implements jitter buffer based on the obtained values, and performs more detailed delay compensation control based on fixed delay values. This allows network conditions, which are normally out of user's control, to optimize the user's IoT device control application. We construct a basic motor-based experimental system around an FPGA and verify the effectiveness of the proposed architecture. An experiment shows that the proposed architecture holds jitter to any practical set value and achieves successful motor control within 0.62 s, whereas it cannot be controlled when there is no jitter buffer.