MExE-Based QoS

We have identified delay and delay variability as two components that add or subtract
from user value. Some of our rich media mix is delay-tolerant but not all of it, and the
part of the media mix that is the most sensitive to delay and delay variability tends
to represent the highest value. Application streaming is part of our rich media mix—
Application streaming implies that we have one or more applications running in
parallel to our audio and video exchange.
In this chapter, we consider how handset software performance influences the quality
of the end-to-end user experience.