SERVICE FLOW MANAGING METHOD, DEVICE AND SYSTEM BASED ON DS-LITE

摘要

A service flow managing method, device and system based on DS-Lite are provided. The method includes that: the carrier-grade NAT (CGN) receives the Authentication Authorization Request (AAR) sent by the Application Function (AF), the AAR carrying the classifier information of the first IPv4 address; the first IPv4 address in the AAR is mapped into the terminal public IPv6 address according to the mapping relationship between the IPv6 address and the IPv4 address maintained on the CGN; the AAR is sent to the Policy and Charging Rules Function (PCRF) for service authorization according to the terminal public IPv6 address to accomplish the service flow managing process between the Access Service Network (ASN) and the terminal. The embodiments of the present invention realize that the signaling on the AF is firstly routed to the CGN, then routed to the accurate PCRF from the CGN. The dynamic service managing process for establishing/modifying/deleting the service flow based on DS-Lite can be realized in the Policy and Charging Control (PCC) system hierarchy.