Method and system for implementing policy and charging control in multi-PDN scenario
A method for implementing Policy and Charging Control (PCC) in a multi-Packet Data Network (PDN) scenario is disclosed. The method includes: a Visited Policy Control and Charging Rules Function (VPCRF) that receives PCC rules and the S9 sub-session information associated with the PCC rules from a Home Policy Control and Charging Rules Function (HPCRF), and sends the PCC rules according to the S9 sub-session information.
1. A method for implementing Policy and Charging Control (PCC) in a multi-Packet Data Network (PDN) scenario, comprising:
receiving, by a Visited Policy Control and Charging Rules Function (VPCRF), PCC rules sent by a Home Policy Control and Charging Rules Function (HPCRF), and S9 sub-session information that is associated with the PCC rules and sent by the HPCRF; and
sending, by the VPCRF, the PCC rules according to the S9 sub-session information;
wherein an S9 sub-session identified by the S9 sub-session information is in a mapping relationship with an Internet Protocol Connectivity Access Network (IP-CAN), session and a gateway control session, and wherein the S9 sub-session is a session between the VPCRF and the HPCRF;
wherein the step of sending, by the VPCRF, the PCC rules according to the associated S9 sub-session information comprises:
sending, by the VPCRF, the PCC rules through a corresponding IP-CAN session and a gateway control session according to the mapping relationship between the S9 sub-session identified by the S9 sub-session information and the IP-CAN session and the gateway control session;
wherein the step of sending the PCC rules comprises:
sending the PCC rules to a PDN gateway, through the IP-CAN session; and
obtaining Quality of Service, QoS, rules from the PCC rules, and sending the QoS rules to a Serving Gateway, S-GW, through the gateway control session.
2. A system for implementing Policy and Charging Control (PCC) in a multi-Packet Data Network (PDN) scenario, comprising a computer device with at least one processor implementing functions:
a Home Policy Control and Charging Rules Function (HPCRF) that sends the PCC rules and S9 sub-session information associated with the PCC rules to a Visit Policy Control and Charging Rules Function (VPCRF); and
the VPCRF that receives the PCC rules and S9 sub-session information associated with the PCC rules from the HPCRF, and sends the PCC rules according to the S9 sub-session information;
wherein an S9 sub-session identified by the S9 sub-session information is in a mapping relationship with an Internet Protocol Connectivity Access Network (IP-CAN), session and a gateway control session, and wherein the S9 sub-session is a session between the VPCRF and the HPCRF;
wherein the VPCRF further sends the PCC rules through a corresponding IP-CAN session and a gateway control session according to the mapping relationship between the S9 sub-session identified by the S9 sub-session information and the IP-CAN session and the gateway control session;
wherein the VPCRF further sends the PCC rules to a PDN gateway through the IP-CAN session; and
obtains Quality of Service, QoS, rules from the PCC rules, and sends the QoS rules to a Serving Gateway, S-GW, through the gateway control session.