Analysis of priority based scheduling of real-time video over 3G wireless network

We proposed a performance model for real-time video transmission over the uplink of the third generation wireless network. The video traffic arrival is modeled as a marked discrete time batch Markovian arrival process with priorities. The wireless channel is assumed to have correlated errors that follow a hidden Markov model. We propose a priority based scheduling with automatic repeat request and overdue control for layered video transmission. The transmission time for an arbitrary radio link control data burst is shown to follow a discrete phase type distribution. A DBMAP/PH/1 priority queueing model is formulated for the video transmission buffer and the queueing behavior is simulated. Simulation results showed that better quality of service could be achieved for the high priority queue.