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

Figure 3

Schematic view of the SCReAM congestion control algorithm on the sender side. The operation of SCReAM is as follows: (1) RTP packets from sources are sent to RTP packet queues component; (2) the queue lengths are reported to the media rate control component, which (3) communicates target bit rates to the media sources. The transmission scheduler (4) fetches the RTP packets from the packet queues component and then (5) sends them to the UDP socket according to its congestion control and packet pacing functions and it (6) updates the network congestion control component on transmission timestamps (), sequence number (), and size () of each RTP packet. The received RTCP packets are (7) forwarded to the network congestion control, which then calculates CWND (congestion window) and RTT (round trip time) and (8) updates the transmission scheduler.