S.-I. Sou
ABSTRACT
In 3GPP Release 6, the IP-based Online Charging System (OCS) is defined to support online charging for General Packet Radio Service (GPRS) and IP Multimedia core network Subsystem (IMS) services. During an online charging GPRS session, a number of mid-session events, such as Quality of Service (QoS) could dynamically affect the rating of the in-progress service. When such events occur, the GPRS support node needs to re-authorize the granted credit units with the OCS. If the change of QoS occurs frequently,the signaling load incurred by the re-authorization procedure increases heavily. In this paper, we propose a threshold-based scheme with parameter δ to reduce the traffic signaling for credit reauthorization procedure. By selecting an appropriate δ value, our study indicates that the signaling overhead in the OCS can be significantlyreduced while the inaccuracy of the credit informationinsignificantly increases. Based on our model, the mobile operator can choose appropriate parameter values in the threshold-based scheme for various traffic conditions.
- 3GPP. 3rd Generation Partnership Project; Technical Specification Group Service and System Aspects; Telecommunication management; Charging management; Diameter charging applications. Technical Specification 3G TS 32.299 Version 6.3.0 (2005-06), 2005.Google Scholar
- 3GPP. 3rd Generation Partnership Project; Technical Specification Group Service and System Aspects; A Transparent end-to-end Packet-switched Streaming Service (PSS); Protocols and codecs (Release 6) . Technical Specification 3G TS 26.234 Version 6.9.0 (2006-09), 2006.Google Scholar
- 3GPP. 3rd Generation Partnership Project; Technical Specification Group Service and System Aspects; Telecommunication management; Charging management; Online Charging System (OCS): Applications and interfaces. Technical Specification 3G TS 32.296 Version 6.3.0 (2006-09), 2006.Google Scholar
- Calhoun, P., Loughney, J., Guttman, E., Zorn, G. and Arkko, J. Diameter Base Protocol. IETF RFC 3588, September 2003. Google ScholarDigital Library
- Convergys. On-line Charging: Delivering Pre- and Post-Paid Convergence. 2005.Google Scholar
- Hakala, H., Mattila, L., Koskinen, J-P., Stura, M. and Loughney, J. Diameter Credit-Control Application. IETF RFC 4006, August 2005.Google ScholarCross Ref
- Hung, H.-N., Lin, Y.-B., Peng, N.-F. and Sou, S.-I. Connection Failure Detection Mechanism of UMTS Charging Protocol. IEEE Transactions on Wireless Communications, 5(5):1180--1186, 2006. Google ScholarDigital Library
- Kleinrock, L. Queueing Systems: Volume I -- Theory. New York: Wiley, 1976.Google Scholar
- Lin, Y.-B., and Chen, Y.K. Reducing Authentication Signaling Traffic in Third Generation Mobile Network. IEEE Transactions on Wireless Communications, 2(3), 2003. Google ScholarDigital Library
- Lin, Y.-B., and Pang, A.-C. Wireless and Mobile All-IP Networks. Wiley, 2005. Google ScholarDigital Library
- Little J. D. C. A Proof for the Queuing Formula: L = λW. Operations Research, 9(3):383--387, 1961.Google ScholarDigital Library
- Mitrani, I. Modeling of Computer And Communication Systems. Cambridge University Press, 1987. Google ScholarDigital Library
- Ross, S.M. Stochastic Processes. John Wiley & Sons, 1996.Google Scholar
- Sou, S.-I., Hung, H.-N., Lin, Y.-B., Peng, N.-F. and Jeng, J.-Y. Modeling Credit Reservation Procedure for UMTS Online Charging System. Accepted for publication in IEEE Transactions on Wireless Communications. Google ScholarDigital Library
Index Terms
- Performance analysis of credit re-authorization schemes in UMTS online charging system
Recommendations
Reducing Credit Re-authorization Cost in UMTS Online Charging System
During an online charging general packet radio service (GPRS) session, a number of mid-session events, such as changes of quality of service (QoS), could dynamically affect the rating of the in-progress service. When such events occur, the GPRS support ...
Credit pre-reservation mechanism for UMTS prepaid service
Online Charging System (OCS) supports multiple prepaid and postpaid sessions simultaneously. Through credit reservation, the OCS assigns some credit units to a session. These credit units are decremented based on the traffic volume or the duration time. ...
Modeling Credit Reservation Procedure for UMTS Online Charging System
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 ...
Comments