Modeling Credit Reservation Procedure for UMTS Online Charging System

Author

Sou, Sok-Ian ; Hung, Hui-Nien ; Lin, Yi-Bing ; Peng, Nan-Fu ; Jeng, Jeu-Yih

Author_Institution

Nat. Chiao Tung Univ., Hsinchu

Volume

6

Issue

11

fYear

2007

fDate

11/1/2007 12:00:00 AM

Firstpage

4129

Lastpage

4135

Abstract

The IP multimedia core network subsystem (IMS) provides real-time multimedia services for Universal Mobile Telecommunications System (UMTS). Through recharge threshold-based credit reservation (RTCR) mechanism, prepaid IMS services can be supported by the online charging system (OCS) in UMTS. In RTCR, when the remaining amount of prepaid credit is below a threshold, the OCS reminds the user to recharge the prepaid account. It is essential to choose an appropriate recharge threshold to reduce the probability that the in-progress service sessions are forced-terminated. An analytic model is developed to investigate the performance of RTCR for the OCS. Based on our study, the network operator can select the appropriate parameter values for various traffic conditions.

Keywords

3G mobile communication; IP networks; multimedia communication; probability; IMS; IP multimedia core network subsystem; OCS; RTCR mechanism; UMTS online charging system; Universal Mobile Telecommunications System; credit reservation modeling; probability; real-time multimedia service; recharge threshold-based credit reservation; 3G mobile communication; Authentication; GSM; Intelligent networks; Multimedia systems; Performance analysis; Protocols; Real time systems; Telecommunication traffic; Traffic control;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2007.060250

Filename

4381421