Date of this Version

January 2006

Document Type

Journal Article

Publication Details

Alam, Muhammad T. and Wu, Zheng da (2006) Admission control approaches in the IMS presence service is published in the International Journal of Computer Science, Volume 1, Issue 4, 2006, pp. 299-314.
2006 HERDC submission


In this research, we propose a weighted class based queuing (WCBQ) mechanism to provide class differentiation and to reduce the load for the IMS (IP Multimedia Subsystem) presence server (PS). The tasks of admission controller for the PS are demonstrated. Analysis and simulation models are developed to quantify the performance of WCBQ scheme. An optimized dropping time frame has been developed based on which some of the pre-existing messages are dropped from the PS-buffer. Cost functions are developed and simulation comparison has been performed with FCFS (First Come First Served) scheme. The results show that the PS benefits significantly from the proposed queuing and dropping algorithm (WCBQ) during heavy traffic. © 2006 World Enformatika Society



This document has been peer reviewed.