Advance reservations for predictive service in the Internet

We extend a measurement-based admission control algorithm suggested for predictive service to provide advance reservations for guaranteed and predictive service, while retaining the attractive features of predictive service. The admission decision for advance reservations is based on information about flows that overlap in time. For flows that have not yet started, the requested values are used, and for those that have already started measurements are used. This allows us to estimate the network load accurately for the near future. To provide advance reservations we ask users to include durations in their requests. We present simulation results to show that predictive service with advance reservations provides utilization levels significantly higher than those for guaranteed service, and comparable to those for predicted service without advance reservations. Those utilization levels are reached without any preemption of other admitted flows. Finally, we discuss how to setup advance reservations over multiple hops in the Internet using resource reservation setup protocols.