Session establishment method, device and system
A technology for session establishment and session establishment request, applied in the field of communication, which can solve problems such as lack of solution support
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Embodiment 1
[0096] Such as figure 1As shown, the flow chart of the session establishment method provided by one embodiment of the present invention is applied in a network architecture where the third-party SP and PCRF support the XML protocol, and the method includes:
[0097] Step S101, the Diameter routing agent DRA in the Diameter domain where the UE is located receives the PCRF address query request message or the Rx session establishment request message carrying the identification information of the UE;
[0098] Step S102, the DRA queries the correspondence between the pre-stored identification information and the PCRF address according to the identification information, and obtains the PCRF address corresponding to the identification information; the PCRF address is used by the third-party SP to initiate an Rx session establishment request to the PCRF.
[0099] The identification information in this embodiment of the present invention may include International Mobile Subscriber Id...
Embodiment 2
[0116] Such as figure 2 As shown, it is a flowchart of a session establishment method provided by another embodiment of the present invention, the method includes:
[0117] Step S201, the Diameter domain query function entity receives a PCRF address query request message or an Rx session establishment request message in XML format sent by a third-party SP and carrying UE identification information;
[0118] Step S202, the Diameter domain query function entity instructs the DRA where the UE is located to query the PCRF address according to the received request message; the PCRF address is obtained by the DRA based on the identification information and the corresponding relationship between the stored identification information and the PCRF address, and the PCRF address is used for The third-party SP initiates an Rx session establishment request to the PCRF.
[0119] Wherein, the identification information may include IMSI, MSISDN, IP address, IP+PDN and other forms.
[0120]...
Embodiment 3
[0138] Such as image 3 As shown, it is a flowchart of a session establishment method provided by another embodiment of the present invention. The Diameter domain query function entity in this embodiment is deployed on the DRA where the UE is located. The method specifically includes:
[0139] In step 301, the UE establishes an IP-CAN session.
[0140] The session establishment process specifically includes:
[0141] Step 3011, the UE sends an IP-CAN session establishment request message carrying the identification information of the UE to the PCEF;
[0142] In this embodiment, the identification information is the IP address of the UE; when the IP address is a private network IP address, the identification information also includes the PDN information of the UE; the identification information in this embodiment includes the IP address and PDN information as an example Be explained.
[0143] Step 3012, PCEF receives the IP-CAN session establishment request message, selects ...
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