Method, apparatus, and system for associating sessions

摘要

Embodiments of the present invention provide a method, an apparatus, and a system for associating sessions, which relate to the communications technology field, and are used to solve the problem where policy control sessions cannot be correctly associated when an access network is connected to a core network through a secure gateway ePDG. The method for associating sessions in an embodiment of the present invention includes: receiving a first policy control session establishment request or a first policy control session modification request that carries a local address of a user equipment; and associating the first policy control session and a second policy control session corresponding to the first policy control session according to the local address of the user equipment; where, the local address is allocated by a non-3GPP access network.

主权项

1. A method for associating sessions, comprising:
receiving, by an apparatus operable to provide a policy control and charging rules function (PCRF), an IP connectivity access network (IP-CAN) session establishment request from a packet data gateway (PGW), wherein the IP-CAN session establishment request carries a local address of a user equipment, and the local address of the user equipment is an IP address or an IP address prefix; receiving, by a policy controller (PC) that is in a non-3GPP access network comprising a broadband remote access server (BRAS), a remote authentication dial-in user service (RADIUS) session establishment request or a diameter session establishment request that carries the local address from the BRAS; and sending by the PC the S9* session establishment request to the apparatus: receiving, by the apparatus, an S9* session establishment request from the PC, wherein the S9* session establishment request carries the local address of the user equipment; and associating, by the apparatus, an IP-CAN session and an S9* session according to the local address of the user equipment.