Title: Modeling prepaid application server of VoIP and messaging services for UMTS
Authors: Sou, Sok-Ian
Lin, Yi-Bing
Wu, Quincy
Jeng, Jeu-Yih
Department of Computer Science
Keywords: billing;diameter protocol;IP multimedia core-network subsystem (IMS);session initiation protocol (SIP);VoIP
Issue Date: 1-May-2007
Abstract: Universal mobile-telecommunication system supports IP multimedia services through the IP multimedia core-network subsystem (IMS). This paper proposes a prepaid application server (PAS) to handle both the prepaid calls and messaging services in the IMS. When both voice and messaging are simultaneously offered, a potential problem is that the delivery of a message during a call may result in force-termination of that call due to credit depletion. To address this issue, we describe a strategy to determine if a prepaid message can be sent out during a call session. We propose an analytic model to investigate the performance of this strategy. This paper provides guidelines to select appropriate input parameters for the PAS.
URI: http://dx.doi.org/10.1109/TVT.2007.895493
ISSN: 0018-9545
DOI: 10.1109/TVT.2007.895493
Volume: 56
Issue: 3
Begin Page: 1434
End Page: 1441
Appears in Collections:Articles

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