Date Added: Jul 2011
There is static and dynamic priority queuing systems to model various classes with different service requirements. The static priority queuing systems satisfy the stringent delay requirement of a high priority class, but they may cause excessive delay for a low priority class. Recently, to overcome this shortcoming, dynamic (hybrid) priority queuing systems have been studied. In ATM networks, the dynamic priority queue can be applied to improve the performance of a delay-insensitive class while still satisfying the delay requirements of a delay-sensitive class. In many applications to computer and communication networks, the traffic stream has been assumed to be a Poisson process.