The present document is a study report for Rc reference point supported by ABMF (Accounting Balance Management Function). The study covers the drive and requirement analysis, existing architectures, key issues analysis, recommandations, etc. The study aims at producing recommendations for the following aspects:

• 3GPP work item and specification;
• Charging requirements and principles;
• Charging architecture and Rc networking scenarios;
• Charging data and protocols;
• Technical recommandations