A non-feedback congestion control framework for high-speed data networks
Hyogon Kim · 1996
All congestion control schemes for non-real-time data traffic are based on feedback control. But continuing bandwidth increases with the emergence of high-speed networking makes feedback control increasingly inappropriate, because of large relative propagation delay, and the stability requirement of delayed feedback control dictates that congestion control schemes will stay conservative in high-speed networks, prohibiting a source from exploiting large bandwidth aggressively. This inefficiency and poor scalability of feedback control in high-speed networking demands the congestion control paradigm be fundamentally shifted from feedback control to non-feedback control. In this dissertation we propose a non-feedback congestion control scheme for data traffic, named Blitz, which enables the network to exercise dynamic control needed for bursty and unpredictable data traffic. We show the feasibility of Blitz by providing a strategy to incrementally deploy it in TCP/IP networks, and by comparing its performance with that of TCP Reno. Simulation results show that Blitz outperforms Reno under large bandwidth-delay product, small data size, and small MTU size, which are the features we believe many internetworks in the future will have.