One Control to Rule Them All: Coupled Congestion Control for RTP Media

Congestion occurs at a bottleneck along an Internet path; multiple flows between the same sender and receiver can therefore benefit from using only a single congestion control instance when they share the same path. These benefits include the ability to perfectly control the rate allocation between flows. We present a mechanism for coupling congestion control for real-time media that is simpler and easier to deploy than the conceptually similar “Congestion Manager”, and we show its benefits by coupling multiple congestion controlled flows sharing the same bottleneck.