Method for internet protocol (IP) multimedia subsystem to download interface data and IP multimedia subsystem

Abstract

The invention relates to a method for an internet protocol (IP) multimedia subsystem to download interface data. The IP multimedia subsystem comprises a home subscriber server (HSS), a serving-call session control function (S-CSCF) and an application server (AS). The method for the IP multimedia subsystem to download the interface data comprises the following steps of: storing a shared service trigger point in a local database of the HSS, the S-CSCF and the AS; when a user registers for the S-CSCF, requiring the download of first interface data of the user from the HSS by the S-CSCF, acquiring an identifier corresponding to the shared service trigger point of the first interface data of the user from the local database by the HSS, and sending the identifier to the S-CSCF; and after receiving the identifier by the S-CSCF, acquiring the shared service trigger point corresponding to the identifier from the local database, and filling the shared service trigger point into an initial filter critic (IFC) of the user to generate the first interface data. The invention also provides the IP multimedia subsystem. The subsystem and the method can reduce the data traffic of a Cx interface and a Sh interface in the IP multimedia subsystem.

Description

technical field [0001] The invention relates to the third generation mobile communication technology, in particular to a method for downloading interface data in an IP Multimedia Subsystem (IMS, IP Multimedia Subsystem). Background technique [0002] In order to meet the needs of multimedia communication, the 3GPP organization introduced the IP Multimedia Subsystem (IMS, IP Multimedia Subsystem) on the basis of the original packet bearer network. IMS can not only provide users with traditional voice services, but also provide users with rich multimedia services. . The IMS includes Home Subscriber Server (HSS, Home Subscriber Server), Application Server (AS, Application Server), Serving-Call Session Control Function (S-CSCF), Interrogating-Call Session Control Function (Interrogating-Call Session Control Function) , I-CSCF), proxy call control entity (Proxy-Call Session Control Function, P-CSCF). The proxy call control entity can be located in the access network where the u...

AI Technical Summary

Problems solved by technology

[0010] Therefore, due to the differences in business requirements of more and more users, or the addition of new services in the network, the original shared IFC set cannot meet the needs, and the shared IFC set needs to be added or deleted.

If the shared IFC set in the network increases significantly, it will be unfavorable for the maintenance of shared IFC set and Cx interface data

[0011] In short, the existing shared IFC set of the Cx interface is not flexible enough, it can only roughly cover the business needs of users, and it is difficult to maintain. Deleting the shared IFC set will increase the data traffic of the Cx interface

At the same time, the Sh interface does not introduce a shared IFC set, which makes the data flow of the Sh interface larger

Images