Method and system for user access to network
A technology for accessing a network and a network, which is applied in the field of realizing user access to the network for service realization, and can solve the problem that the P-CSCF cannot meet the capabilities required for user services, and is not provided.
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Embodiment 1
[0103] In this embodiment, it is assumed that the user terminal roams and has access to the home network, that is, the user has selected the P-CSCF of the home network for service processing, and the visited network and the home network of the user terminal are both IMS networks, and The IP CAN of the visited network is a GPRS network; the service request initiated by the user terminal is an emergency service request.
[0104] FIG. 4 is a flowchart of a method for a user to access a network in Embodiment 1 of the present invention. As shown in Figure 4, the method includes:
[0105] Step 401, the user terminal sends an emergency service request to the home network;
[0106] In this step, since the user terminal has selected the P-CSCF1 of the home network, when the user terminal initiates an emergency service request, the emergency service request will pass through the P-CSCF of the home network to the call session function of the home network; the emergency service request s...
Embodiment 2
[0136]In this embodiment, another method for users to access the network is provided. First, the user terminal initiates an attach request for attaching to the IP access network, and the IP access network returns a list of available access network elements through the attach request response, including One or more access network elements and their attributes, the attributes include: location information of network elements and / or capability information of network elements and / or service capabilities supporting different types of terminals, etc. Select an access network element that can meet the capabilities required by the user service, and the user terminal initiates an access request to it, such as sending a SIP registration message.
[0137] For example, users always need to initiate emergency services, and emergency services can only be provided through the P-CSCF of the visited location. Therefore, the user selects a P-CSCF of the visited location from the access network e...
Embodiment 3
[0163] Open Mobile Alliance (Open Mobile Alliance, OMA) Device Management / Client Provisioning (Device Management / Client Provisioning, DM / CP) can perform terminal device management and firmware update, and the interface with the user terminal can be a hypertext transfer protocol ( Hypertext Transfer Protocol, HTTP), Wireless Session Protocol (Wireless Session Protocol, WSP), Object Exchange Protocol (Object Exchange protocol, OBEX) or Synchronization Mark-up Language (SyncML), etc.
[0164]In this embodiment, another method for users to access the network is provided. First, the device management function based on the OMA DM / CP standard of the network is used to return a list of available access network elements for the user terminal, including one or more The access network element and its attributes, the attributes include: the location information of the network element and / or the capability information of the network element and / or the service capability supporting different...
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