An ABR feedback control scheme with tracking

We propose an explicit-rate ABR feedback control scheme, UT (uniform tracking). The distinct feature of UT is that it achieves max-min fairness by tracking an effective number of sources; specific constraint information is not required. As a result, its implementation is much simpler than that of other fair control schemes; indeed, its complexity is similar to that of unfair explicit-rate controls. In the thorough simulation study, UT demonstrates its ability to scale with speed, distance, number of users (both persistent and bursty), and number of switches while remaining robust, efficient, and fair under stressing conditions with MPEG background traffic and multiple propagation delay loops.