Roaming control method and system for accessing to IP multimedia subsystem network through SBC

Abstract

The invention relates to a roaming control method access to IMS through SBC. One or more network marks of a conversational boundary control network element allowing the access of the users is added in a network marking list allowing the access of the users, then in the conversational boundary control network element, a P-Visited-Network-ID head domain is inserted in the register request message of the IP of users multimedia subsystem transferred to an agent conversation control network element, and the network mark of the conversational boundary control network element is filled in the head domain. The agent conversation control function network element processes the register request message and then carries out the subsequent register processes. The invention can carry out the roaming control access to IMS through SBC, control the roaming behavior of the users, prevent users from using network exceeding the authority and avoid abusing network resources.

Description

technical field [0001] The invention relates to an IMS network, in particular to a roaming control method and system for accessing the IMS network through an SBC. Background technique [0002] IP Multimedia Subsystem (IP Multimedia Subsystem, IMS) was first proposed by 3GPP (3rdGeneration Partnership Project, Third Generation Partnership Project) in its standard series R5, which is based on PS (Packet Switching, packet switching) domain to provide IP multimedia business subsystems. Subsequently, IMS has gradually become the core technology for network convergence and service convergence. -GSI (Next Generation Network Global Standards Initiative, NGN Global Standards Initiative), ETSI (Europe Telecommunications Standards Institute European Telecommunications Standards Institute) TISPAN (Telecommunication and Internet converged Services and Protocols for Advanced Networking, telecommunications and Internet converged services and advanced network protocols) and other internati...

AI Technical Summary

Problems solved by technology

[0011] In this networking mode, since all IMS core network elements in the entire network belong to one domain, especially the P-CSCF always exists in this domain, and only The network identifier of the P-CSCF, so that when the user accesses the IMS in any visiting place, after the registration request message initiated by the user reaches the P-CSCF through the SBC, the P-CSCF inserts the P in the registration request message sent to the I-CSCF -Visited-Network-ID header field cannot reflect the actual location information of the user, so the IMS network cannot judge the roaming status of the user based on the network identifier of the P-CSCF, and cannot control the roaming of the user

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