Investigation of the M2/G2/1/∞, N queue with restricted admission of priority customers and its application to HSDPA mobile systems

Date

2009-06-11

Advisors

Journal Title

Journal ISSN

ISSN

Volume Title

Publisher

Elsevier

Type

Article

Peer reviewed

Yes

Abstract

This paper investigates a queuing system for QoS optimization of multimedia traffic consisting of aggregated streams with diverse QoS requirements transmitted to a mobile terminal over a common downlink shared channel. The queuing system, proposed for buffer management of aggregated single-user traffic in the base station of High-Speed Downlink Packet Access (HSDPA), allows for optimum loss/delay/jitter performance for end-user multimedia traffic with delay-tolerant non-real-time streams and partially loss tolerant real-time streams. In the queuing system, the real-time stream has non-preemptive priority in service but the number of the packets in the system is restricted by a constant. The non-real-time stream has no service priority but is allowed unlimited access to the system. Both types of packets arrive in the stationary Poisson flow. Service times follow general distribution depending on the packet type. Stability condition for the model is derived. Queue length distribution for both types of customers is calculated at arbitrary epochs and service completion epochs. Loss probability for priority packets is computed. Waiting time distribution in terms of Laplace-Stieltjes transform is obtained for both types of packets. Mean waiting time and jitter are computed. Numerical examples presented demonstrate the effectiveness of the queuing system for QoS optimization of buffered end-user multimedia traffic with aggregated real-time and non-real-time streams.

Description

The Publisher's final version can be found by following the DOI link.

Keywords

3.5G wireless networks, multimedia traffic, stochastic models, performance modelling, priority queue, space priority, time priority, waiting time, jitter

Citation

Al-Begain, K., Dudin, A., Kazimirsky, A. and Yerima., S. (2009) Investigation of the M2/G2/1/∞, N queue with restricted admission of priority customers and its application to HSDPA mobile systems. Computer Networks. 53(8), pp 1186-1201.

Rights

Research Institute

Cyber Technology Institute (CTI)