Guarantee processing method and device for service flows

[0108] In this embodiment, the UE, PCEF, PCRF, SDN controller, and AS are all located between NATs, that is, they are all located in a private network, that is to say, when the UE sends a service flow to be guaranteed to the AS, it will not pass through the NAT.

[0109] Case A: Figure 4 The signaling flow chart of Embodiment 4 of the service flow guarantee processing method provided by the present invention, as shown in Figure 4 As shown, what this embodiment involves is that the PCRF determines the destination flow direction according to the destination address of the service flow to be guaranteed, and sends the target source address and guarantee information of the service flow to be guaranteed to the controller, so that the controller can Address and guarantee information, the specific process of guaranteeing the service flow to be guaranteed in the IP bearer network. like Figure 4 As shown, the method may include:

[0110] S401. The PCRF receives the service flow de...

[0139] In this embodiment, the UE, the PCEF, and the PCRF are all located before the NAT, that is, they are all located in the private network. The SDN controller and the AS are located behind the NAT, that is, both are located in the public network. That is to say, when the UE sends the service flow to be guaranteed to the AS, it will pass through the NAT.

[0140] Case A: Image 6 The signaling flow chart of Embodiment 6 of the service flow guarantee processing method provided by the present invention, as shown in Image 6 As shown, what this embodiment involves is that the PCRF determines the destination flow direction according to the destination address of the service flow to be guaranteed, and sends the target source address and guarantee information of the service flow to be guaranteed to the controller, so that the controller can Address and guarantee information, the specific process of guaranteeing the service flow to be guaranteed in the IP bearer network. Such as...