Coping with Systematic Inaccuracy
From using thresholds or classes (as opposed to random inaccuracies from using clamp down timers)
It is possible, given the currently known value and knowledge of the generation mechanism to compute a probability for the actual value
E.g., for a threshold based policy, th < 1
- u = ab/th, l = ab*th, where ab: available bandwidth
P(b) = (u - b) / (u - l), where b: requested bandwidth
Random inaccuracies can not be modeled
Infrequent updates can result in long lasting routing mistakes