Modeling credit reservation procedure for UMTS online charging system

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


研究成果: Article同行評審

28 引文 斯高帕斯(Scopus)


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.

頁(從 - 到)4129-4135
期刊IEEE Transactions on Wireless Communications
出版狀態Published - 1 11月 2007


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