Implementing method of IP multimedia subsystem centralized service re-registration
The technology of a multimedia subsystem and its implementation method is applied in the field of IP multimedia subsystem centralized service re-registration, which can solve the problems of affecting the use of IMS services, failure to send location update messages, abnormal registration, etc.
Inactive Publication Date: 2011-07-13
ZTE CORP
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Problems solved by technology
[0028] (1) For the method of re-registration using CS attachment information, when the CS location is updated or the attachment status is updated, since the user location does not change, the VMSC does not notify the home network of the location update information or the attachment refresh status. At this time, the HSS or VMSC Unable to send location update message to RUA
[0029] (2) For the re-registration method using CS attachment information, since the IMS re-registration time is inconsistent with the user equipment’s location update time at the visited location, if the CS location update is used as the trigger condition for IMS re-registration, registration exceptions may occur
[0031] From the above analysis, it can be seen that the user equipment triggers the RUA through the CS location update process or the user equipment performs the IMS re-registration process through the ICCC channel, both of which have problems and will affect the use of IMS services
Method used
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Embodiment 1
[0069] Such as image 3 As shown in the figure, it describes the flow chart of the L-CAAF module in the UE performing the registration / deregistration process through the ICCC channel, and the RUA performing the IMS re-registration process instead of the user equipment. For UEs that do not support ICS capabilities, the process is similar to this, which is a registration / deregistration request initiated by the L-CAAF module in the VMSC.
[0070] Specific steps are as follows:
[0071] Step 301, the UE sends an ICS registration request to the RUA through the ICCC;
[0072] Step 302, RUA performs IMS initial registration instead of UE, and sends a registration request to CSCF module;
[0073] Step 303, the CSCF module executes the IMS initial registration service logic, and the UE registers in the IMS;
[0074] Step 304, the CSCF module returns a registration success response to the RUA;
[0075] Step 305, the RUA obtains the IMS registration timeout from the response, and ent...
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The invention discloses a method for realizing re-registration of centralized services in an IP multimedia subsystem. When user equipment is in the IMS registration state of the IP multimedia subsystem, a remote user agent periodically replaces the user equipment to execute IMS re-registration according to overtime time of IMS registration. When the method is used in IMS centralized services, theremote user agent can maintain the IMS registration state of the user equipment, thereby meeting requirements of IMS systems and services.
Description
technical field [0001] The invention relates to the communication field, in particular to a method for realizing centralized service re-registration of an IP multimedia subsystem. Background technique [0002] IP (Internet Protocol, referred to as IP) multimedia subsystem (IPMultimedia Core Network Subsystem, referred to as IMS) is an IP-based network architecture proposed by the 3rd Generation Partnership Project (3rdGeneration Partnership Project, referred to as 3GPP). It builds an open and flexible business environment, supports multimedia applications, and provides users with rich multimedia services. [0003] IMS is an IP-based telecommunications network architecture and has nothing to do with access technology. In addition to providing services for packet access networks such as GPRS (General Packet Radio Service) and WLAN (Wireless Local Area Network, wireless local area network), it also provides It can provide services for mobile cellular networks such as GSM (Glob...
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IPC IPC(8): H04L29/06H04W60/00
Inventor 郝振武游世林
Owner ZTE CORP