Accurate delay bounds for real-time IP services in presence of variable packet size

Considerable recent work has explored the queueing impact of different prop erties of the input process to a buffer. The authors confine their attentio n to the effects of variation in service time distribution: the motivation for this being the need to calculate accurate delay bounds in the presence of variable length IP packets, and specifically to assess the impact of a s mall proportion of large packets on the delay performance. An analytical re sult is developed into which any distribution of packet size can be substit uted easily, and in the process the value of better queueing models for arb itrary packet length distributions is shown.