Processing method after core network restart/failure recovery

A core network element and fault recovery technology, applied in the field of communication, can solve problems that affect the normal processing of calls and business processes, and achieve the effects of enhancing fault handling capabilities, solving service unavailability, and ensuring continuity

Inactive Publication Date: 2008-02-20
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At the same time, it can also be seen that there are some defects in the current IMS system, especially after the core network element is restarted or recovered from a fault, it usually affects the normal processing of subsequent calls and business processes

Method used

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  • Processing method after core network restart/failure recovery
  • Processing method after core network restart/failure recovery
  • Processing method after core network restart/failure recovery

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0099] Example 1: Call initiated by UE

[0100] When the UE initiates a call, in step S506, the S-CSCF can store the data locally, and the stored data includes: the contact address of the UE, the address of the P-CSCF, the network ID of the P-CSCF, the PUI, the PUI Registration status, user's business configuration data.

[0101] However, in step S506, when the registration status of the PUI acquired by the S-CSCF from the HSS is unregistered, the S-CSCF returns a response that the service is unacceptable, does not continue the subsequent process, and does not locally save the PUI acquired from the HSS. business configuration data.

[0102] Fig. 6 shows the processing in this example in detail. As shown in Figure 6, it specifically includes:

[0103] S601, the UE initiates a SIP INVITE request to the P-CSCF, including the media format used to initiate media capability negotiation; usually, the SIP INVITE request carries the contact address of the UE, the public user identif...

example 2

[0131] Example 2: AS replaces the call initiated by the user

[0132] In the case that the AS replaces the call initiated by the user, the user can be in a registered state or a non-registered state. And if the S-CSCF saves the data locally, the saved data may include: the contact address of the application server, the PUI, the registration status of the PUI, and the service configuration data of the user.

[0133] FIG. 8 shows a flow chart of the AS replacing the user to initiate a call after the S-CSCF allocated to the user PUI fails and restarts. In this process, the AS acts as the UE. Typical services where the application server AS initiates calls instead of users include the non-registered forwarding service and the active notification service of the AS.

[0134] S801, the application server obtains the S-CSCF address allocated for the public user identity PUI, and the process is returned to the AS by the HSS through the interface Sh between the AS and the HSS;

[0135...

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Abstract

The utility model discloses a processing method of the core network element restart/post-fault restoration, which comprises the following processes: during the calling process made by users, the core network element check the local data after receiving the call request from the user; if the corresponding data of the user have not been detected, a message or a plurality of messages is/are sent to the server, to which the user belongs, so as to request the registration state and business configuration data of the public user identifier of the user. In Response to the request message of the core network element, the server assigned to the user looks up the registration state and business configuration data of the public user identifier and returns to the core network element. The core network element uses the registration state and business configuration data of the public user identifier obtained from the server of the user, and performs the processing flow of the subsequent conservation.

Description

technical field [0001] The present invention relates to the communication field, and more specifically, relates to a processing method after restart / fault recovery of core network elements in an IP multimedia subsystem. Background technique [0002] The IP Multimedia Core Network Subsystem (IMS for short) is the core of the new generation communication network. Fig. 1 describes the network element entities and their connections related to the present invention in the IMS architecture. Wherein: User Equipment (UE for short) 101 represents a terminal device used by a user, and a call session control function (Call Session Control Function, CSCF for short) is a core network element controlling a session process, including: a proxy call session control function (Proxy- CSCF (P-CSCF for short) 102, Interrogating-CSCF (I-CSCF for short) 103, Serving-CSCF (S-CSCF for short) 104, wherein the Home Subscriber Server (Home A Subscriber Server (HSS for short) 104 is the main storage s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/56H04L12/24
CPCH04L65/1083H04L29/06353
Inventor 郝振武李志军汪军丁兆明
Owner ZTE CORP
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