Abstract
This work depicts a proposal of possible and feasible method for reduction of prepaid credit control and update requests in real time, within the ‘Policy and Charging Control’ (PCC) architecture. Consideration is relating to IMS (IP Multimedia Subsystem) environment, on condition where QoS can be dynamic changed and different feasible service configurations affect the charging process.
Highlights
Will be using the known concept of Application Server in IMS architecture, in terms of introducing new functionalities and applications on proposed External Application Server
Policy and Charging Rules Function (PCRF) initiates the calculation of a new time interval credit control on the External Application Server (EAS), and dynamic creation of new charging rules, which will be delivered to the Policy and Charging Enforcements Function (PCEF)
Traffic for service s1 is with constant bit rate, generated on the testing production VoIP platform and recorded by professional measuring device EXFO AXS-200 in a time of 8 minutes
Summary
Will be using the known concept of Application Server in IMS architecture, in terms of introducing new functionalities and applications on proposed External Application Server. After receiving information about user’s consumption in the form of Policy Counter Status reports, in order to complete the charging rules and authorized QoS, PCRF sends a SOAP request to the EAS for the credit control time interval computation. PCEF gateway monitors the time interval for the entire group activated services, and after its expiry signals to OCS to send new updated information about the Policy Counter Status of individual resource consumption to PCRF module. After receiving this information, PCRF initiates the calculation of a new time interval credit control on the EAS, and dynamic creation of new charging rules, which will be delivered to the PCEF. On the EAS there is an automatic recharging function, which is complementary to the time interval computation function and interacts with it when needed that is when prepaid credit fall down to some predefine value (explained in [4])
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