Title: Novel Queueing Model for Multimedia
Overdownlink in 3.5G Wireless Network
Authors: Khalid Al-Begain, Alexander N. Dudin, Vilena V. Mushko
Abstract: In this paper, a model for multimedia transmission over
downlink shared channel in 3.5G wireless network is presented. The multimedia
stream consists of multiple substreams that are aggregated into one real-time
and one nonreal-time �ows. Correlation with each �ow and between �ows is
assumed. Additionally, we propose a combined time-space priority bu�er
management scheme to optimise quality of service requirements for each �ow. The
problem is formulated in terms of a queue with two priority classes, one of
which has time priority while the another has space priority. The input is
described by the Batch Marked Markovian Arrival Process (BMMAP). Service time
distributions are of PH (phase) type dependent on the class of a customer. The
bu�er is �nite, but the customers of a class having higher priority for taking
into the service from a bu�er (time priority) can occupy only a part of this
bu�er. Queueing system's behavior is described in terms of multi-dimensional
continuous time skip-free to the left Markov chain. It allows to exploit an
e�ective algorithm for calculation of the stationary distribution of the
queueing system. Loss probability for customers of both classes is calculated.
Waiting time distribution for priority customers is calculated.