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User registration/cancel service CSCF name consistency checking method

A checking method and consistency technology, applied to electrical components, transmission systems, etc., can solve problems such as confusing response message analysis, no processing method given, and call operations that cannot be executed correctly, so as to achieve the effect of ensuring consistency

Active Publication Date: 2009-07-08
HUAWEI TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] It can be seen from the above description that when the existing protocol checks the consistency of the S-CSCF Name for user registration / logout, an error code will be returned once an inconsistency is detected, so different operations cannot be performed according to the specific value of the ServerAssignment Type parameter
[0012] In addition, when the S-CSCF Name contained in the SAR message is inconsistent with the S-CSCF Name saved by the HSS, the protocol stipulates two return error codes, which are DIAMETER UNABLE TO COMPLY and DIAMETER ERROR IDENTITY ALREADYREGISTERED, causing the response message to fail when parsing chaos on
[0013] Furthermore, when the S-CSCF assigned to an unregistered user is unavailable, the protocol does not provide a corresponding processing method for the unregistered user being called, resulting in the failure of subsequent call operations to be performed correctly

Method used

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  • User registration/cancel service CSCF name consistency checking method
  • User registration/cancel service CSCF name consistency checking method
  • User registration/cancel service CSCF name consistency checking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1, the user initial registration process, such as figure 1 shown.

[0044] Step 101, the user terminal (UE) sends a Register message to the Proxy CSCF (P-CSCF), and the P-CSCF forwards the Register message to the Inquiring CSCF (I-CSCF).

[0045] In steps 102-103, the I-CSCF sends a Registration Status Query Request (UAR) message to the HSS. After receiving the UAR message, the HSS sends the user's capability set information to the I-CSCF through a Registration Status Query Response (UAA) message.

[0046] In the above steps, since the HSS does not save the user's S-CSCF Name, the HSS determines that the user is initially registered, and the HSS sends the user's capability set information to the I-CSCF for subsequent processing.

[0047] Step 104: The I-CSCF selects an S-CSCF that can meet the requirements for the user according to the capability set information, and sends a Register message to the selected S-CSCF.

[0048] Steps 105-106: After receiving th...

Embodiment 2

[0057] Embodiment 2, the user re-registers or cancels (re-registers / logs-off) process, such as figure 2 shown.

[0058] Step 201, the UE sends a registration / deregistration (Register) message to the P-CSCF, and the P-CSCF forwards the registration / deregistration request message to the I-CSCF. The Register message carries parameters for distinguishing whether the message is for performing a registration operation or a logout operation.

[0059] In steps 202-204, the I-CSCF obtains the routing information of the user from the HSS through the UAR / UAA message, and sends the registration / deregistration request message to the corresponding S-CSCF according to the S-CSCF Name in the routing information.

[0060] In the above steps, since the HSS stores the user's S-CSCF Name, the HSS determines that the user is not initially registered, and the HSS sends the user's S-CSCF Name to the I-CSCF for subsequent processing.

[0061] Steps 205-206: After receiving the registration / deregis...

Embodiment 3

[0065] Embodiment three, unregistered user is called the process, such as image 3 shown.

[0066] Steps 301-302: The inquiring CSCF receives an INVITE message calling an unregistered user in the local network, and sends a user location inquiry request (LIR) message to the HSS.

[0067] Step 303: The HSS replies a user location inquiry response (LIA) message to the I-CSCF, and the LIA message includes the capability set information of the user.

[0068] In steps 304-305, the I-CSCF selects an S-CSCF that meets the requirements according to the capability set information, and sends an INVITE message to the selected S-CSCF.

[0069] Step 306: After receiving the INVITE message, the S-CSCF registers the user with the HSS through the SAR message. The SAR message contains the S-CSCF Name, and the Server AssignmetType parameter in the message is UNREGISTERED USER.

[0070] Step 307: After receiving the SAR message, the HSS obtains the S-CSCF Name in the SAR message and replies the...

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Abstract

A method and system for checking the name consistency of the S-CSCFs, which method includes: the home subscriber server receives the registration / deregistration request message, and determines whether the value of the parameter "Server Assignment Type" in the said registration / deregistration request message is "UNREGISTED USER"; if it is so, then the home subscriber server saves the S-SCSF name carried by the registration / deregistration request message and sends an OK response to the S-CSCF; otherwise, the home subscriber server determines whether the S-CSCF name it stored is identical to the S-CSCF name carried by the registration / deregistration request message, if not, then the home subscriber server sends back an error response, and the process ends. For the method and system of the invention, various operations are implemented depending on the value of the parameter "Server Assignment Type", and therefore the normal handover of the S-CSCFs for the unregistered users could be guaranteed.

Description

technical field [0001] The invention relates to IMS network technology, in particular to a method for checking the consistency of a service CSCF name when a user registers / logs out. Background technique [0002] In the IP Multimedia Subsystem (IMS) network, the Serving Call State Control Function (S-CSCF) entity sends a Subscriber Registration / Deregistration Request (SAR) message to the Home Subscriber Server (HSS) through the Cx interface to perform registration / deregistration for the user operate. [0003] After receiving the SAR message, the HSS performs corresponding operations according to the value of the Server Assignment Type (ServerAssignment Type) parameter in the message. The existing protocol stipulates these operations as follows: [0004] If the value of the Server Assignment Type parameter is REGISTRATION or RE REGISTRATION, the HSS sets the registration status of the user to registered, clears the pending flag, and sends the SAR message to the S-CSCF that in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L29/06
CPCH04L29/06333H04L65/1073H04L29/12188H04L29/06217H04L61/1588H04L65/1016H04L61/4588
Inventor 马春燕于彬
Owner HUAWEI TECH CO LTD
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