论文部分内容阅读
3GPP IMS R7将R6中的PDF和CRF合并为PCRF,将策略控制和计费控制融合为R7中的PCC(policy and charging control,策略和计费控制),实现了基于流的灵活的策略控制和计费控制。PCRF如何根据输入信息,由输入输出中每一条目之间的相关属性和PCC规则选择准则,确定输入输出中每一条目之间的I/O映射关系,这些关系的组合,即为规则选择策略。在此基础上针对VoIP业务制定了具体的PCC规则及相应的策略。
The 3GPP IMS R7 combines the PDF and CRF in R6 into a PCRF, and combines policy control and charging control into a PCC (policy and charging control) in R7 to implement flow-based flexible policy control and Billing control. The PCRF determines the I / O mapping relationship between each entry in the input and output according to the input information, the related attributes between each entry in the input and output, and the PCC rule selection criteria. The combination of these relations is the rule selection policy . On this basis, specific PCC rules and corresponding policies are formulated for VoIP services.