Abstract
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 node needs to re-authorize the granted credit units with the Online Charging System (OCS). This paper proposes a threshold-based scheme that utilizes a threshold parameter δ to reduce the signaling traffic for the credit re-authorization procedure. By selecting an appropriate S value, the signaling overhead in the OCS can be significantly reduced while the inaccuracy of the credit information insignificantly increases. The mobile operator can choose appropriate parameter values in the threshold-based scheme based on our study.
Original language | English |
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Article number | 4626336 |
Pages (from-to) | 3629-3635 |
Number of pages | 7 |
Journal | IEEE Transactions on Wireless Communications |
Volume | 7 |
Issue number | 9 |
DOIs | |
State | Published - 1 Sep 2008 |
Keywords
- Credit reservation
- Online charging system (OCS)
- Streaming services
- UMTS