Method and system for making statistics of media flow information in a next generation network

A system for making statistics of media flow information in a Next Generation Network (NGN), wherein functional architecture of the NGN comprises a service layer with a core of an Internet Protocol Multimedia Subsystem (IMS) and an Internet Protocol (IP) based transport layer, the system comprising:

• an Application Function (AF), for sending a request for making statistics of media flow information of a media flow with an identifier of the media flow and a resource reservation request for a media flow and receiving statistic information of the media flow, wherein the resource reservation request comprises metering requirements of metering the media flow and reporting the statistic information;
• a Policy Decision Function (PDF), for receiving the request for making statistics of media flow information from the AF;
• sending the request for making statistics of media flow information to a Border Gateway Function (BGF) if the resource reservation request passes an admission rule;
• receiving statistic information of the media flow from the BGF;
• and sending the statistic information of the media flow received from the BGF to the AF;
• and
• a Border Gateway Function (BGF), for receiving the request for making statistics of media flow information from the PDF;
• making statistics of the media flow information according to the request for making statistics of the media flow information and sending the statistic information of the media flow to the PDF.

A Policy Decision Function (PDF), comprising:

• a processor configured to implement a method comprising:
• receiving a request for making statistics of media flow information of a media flow with an identifier of the media flow and a resource reservation request from an Application Function (AF) in the NGN, wherein the NGN comprises a service layer with a core of an Internet Protocol Multimedia Subsystem (IMS) and an Internet Protocol (IP) based transport layer, wherein the resource reservation request comprises metering requirements of metering the media flow and reporting the statistic information;
• sending the request for making statistics of the media flow information to a Border Gateway Function (BGF) if the resource reservation request passes an admission rule;
• receiving statistic information of the media flow in the NGN from the BGF, wherein the statistic information of the media flow is metered by the BGF after receiving the request for making statistics of media flow information;
• and
• sending the statistic information of the media flow to the AF.