Title :
Reducing Credit Re-authorization Cost in UMTS Online Charging System
Author :
Sou, Sok-Ian ; Lin, Yi-Bing ; Jen, Jeu-Yih
Author_Institution :
Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan
fDate :
9/1/2008 12:00:00 AM
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 delta to reduce the signaling traffic for the credit re-authorization procedure. By selecting an appropriate delta 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.
Keywords :
3G mobile communication; packet radio networks; quality of service; telecommunication signalling; telecommunication traffic; GPRS session; QoS; UMTS online charging system; credit reauthorization cost; general packet radio service session; mobile operator; quality of service; signaling traffic; threshold-based scheme; 3G mobile communication; Communication system control; Costs; Ground penetrating radar; Laboratories; Multimedia systems; Packet radio networks; Quality of service; Real time systems; Streaming media; Credit reservation; UMTS; online charging system (OCS); streaming services;
Journal_Title :
Wireless Communications, IEEE Transactions on
DOI :
10.1109/TWC.2008.070403