Abstract
Real-time packet traffic is characterized by a strict deadline on the end-to-end time delay and an upper bound on the information loss. Due to the high correlation among consecutive packets, the individual packet loss does not characterize the performance of real-time packet sessions. An additional measure of packet loss is necessary to adequately assess the quality of each real-time connection. The additional measure considered here is the average number of consecutively lost packets, referred to as the session average packet gap. We derive an expression for the session average packet gap for the multiclass G/G/m/B queueing system and show that it only depends on the loss behavior of two consecutive packets. This result holds under very weak stationarity conditions. If the packet loss process is markovian, the consecutive packet loss has a geometric distribution. Finally, we explicitly compute the clipping loss perfomance measures for the multiclass M/M/1/∞ queue.
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