Adaptive Video with SCReAM over LTE for Remote-Operated Working Machines

Abstract EN

Remote operation is a step toward the automation of mobile working machines.

Safe and efficient teleremote operation requires good-quality video feedback.

Varying radio conditions make it desirable to adapt the video sending rate of cameras to make the best use of the wireless capacity.

The adaptation should be able to prioritize camera feeds in different directions depending on motion, ongoing tasks, and safety concerns.

Self-Clocked Rate Adaptation for Multimedia (SCReAM) provides a rate adaptation algorithm for these needs.

SCReAM can control the compression used for multiple video streams using differentiating priorities and thereby provide sufficient congestion control to achieve both low latency and high video throughput.

We present results from the testing of prioritized adaptation of four video streams with SCReAM over LTE and discuss how such adaptation can be useful for the teleremote operation of working machines.