Delay utility function Clause Samples

Delay utility function. ‌ The delay utility function is to be used when determining if a flow should be upgrad- ed/downgraded to a higher/lower priority queue. The delay utility function is shown in equation 4.6, Udelay = −1 for dˆ< 1 SLAdelay,  1 for dˆ> SLAdelay,  0 otherwise where dˆ is the current delay estimate of the flow and SLAdelay is the maximum tolerated E2E delay for the service type the flow belongs to. The utility function is a step function ranging from 1 when a flow should be downgraded, to 0 when its current situation is sufficient, to 1 when the flow should be upgraded. This concludes the documentation for the design of the Flow-based Dynamic Queue Se- lector (FDQS) module. The next chapter describes some of the aspects of the developed implementation. 5 Implementation‌ This chapter aims to explain some of the aspects relating to the implementation of the FDQS module as well as the test bed.