Title :
An Evaluation Model for Call Admission Control Scheme in CDMA System
Author :
Yuehong, Gao ; Xin, Zhang ; Yuming, Jiang
Author_Institution :
Centre for Quantifiable Quality of Service in Commun. Syst., Norwegian Univ. of Sci. & Technol., Trondheim, Norway
Abstract :
Call admission control (CAC) is a key factor in quality of service (QoS) provisioning for different services. In this paper, a Quasi-birth-and-death (QBD) process model is developed for the purpose of evaluating the CAC schemes of the cellular systems, where exist several types of traffics with different arrival rates. The CAC controller seeks to optimize the throughput and minimize the blocking probability. We obtain the theoretical expressions of several parameters that indicate the performance of the system, such as connection blocking probability, channel utilization, and normalized throughput, by analyzing the complete sharing CAC scheme. Simulations are implemented and the results show that the simulated outcomes coincide with the theoretical results got from the expressions. This verifies that the modeling is proper to evaluate the performance of CAC scheme.
Keywords :
cellular radio; code division multiple access; probability; quality of service; telecommunication congestion control; CDMA system; QoS provisioning; call admission control scheme; cellular systems; channel utilization; code division multiple access; connection blocking probability; evaluation model; quality of service; quasi-birth-and-death process model; Base stations; Call admission control; Design for quality; Information technology; Interference; Multiaccess communication; Multimedia systems; Quality of service; Throughput; Traffic control; CDMA system; call admission control; quasi birth and death process;
Conference_Titel :
Information Technology and Applications, 2009. IFITA '09. International Forum on
Conference_Location :
Chengdu
Print_ISBN :
978-0-7695-3600-2
DOI :
10.1109/IFITA.2009.311
