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A processing method on functional failure on calling conversation control agent

A technology of session control function and agent call, which is applied in the field of communication, can solve problems affecting the normal processing of calls and business processes, and achieve the effect of ensuring continuity

Inactive Publication Date: 2008-07-09
ZTE CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the above defects in the current IMS system, when the P-CSCF fails or restarts, it usually affects the normal processing of subsequent calls and business processes

Method used

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  • A processing method on functional failure on calling conversation control agent
  • A processing method on functional failure on calling conversation control agent
  • A processing method on functional failure on calling conversation control agent

Examples

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Embodiment Construction

[0090]After the user successfully registers with the IMS network, the IMS network allocates a P-CSCF for the user (UE). If the P-CSCF breaks down, does not respond or loses security association and user data, it will directly cause the call termination process of the executing user to fail to proceed normally. In view of this situation, the present invention provides a method, so that after the P-CSCF fails, the S-CSCF can trigger the UE to perform the initial registration process, so as to establish an effective signaling link, so that the terminal call processing process can Work properly.

[0091] The present invention will be described in further detail below with reference to the accompanying drawings and embodiments.

[0092] Figure 6 is an embodiment of the present invention, which is used to describe when the UE accesses the IMS network, the P-CSCF discovery process is enabled, the IMS network provides multiple candidate P-CSCFs for the UE, and the UE stores the activ...

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Abstract

The invention provides a method to deal with the failures of proxy call session control function, a UE is provided with a host and a standby P-CSCF by an IMS network, the UE and an S-CSCF are used for storing the information of the host and the standby P-CSCF, when the S-CSCF sends service requests to the UE through the host P-CSCF, if the host P-CSCF is overtime and gives no response, the S-CSCFcan send indication to the UE through the standby P-CSCF to request the UE to carry out initial registration, if the host P-CSCF sends back wrong responses, the S-CSCF can send indication to the UE through the host or the standby P-CSCF to request the UE to begin the initial registration, the UE can verify whether the P-CSCF which retransmits the indication is the host or the standby P-CSCF or not , if the result is yes, the initial registration request can be sent to the P-CSCF, after the success of the initial registration, the S-CSCF can send the service request to the UE through the P-CSCF which retransmits the initial registration request.

Description

technical field [0001] The invention relates to the field of communications, in particular to a method for processing failures of proxy call session control functions in an IP (Internet Protocol, Internet Protocol) multimedia subsystem. Background technique [0002] The IP Multimedia Core Network Subsystem (IMS for short) is the core of the new generation communication network. Figure 1 describes the network element entities and their connections in the IMS architecture related to the present invention. 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, referred to as P-CSCF) 102, Inquiring Call Session Control Function (Interrogating-CSCF, referred to as I-CSCF) 103, Serving Call Session Control Function (Serving-CSCF, referred to as S-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04L12/24H04L1/22H04L12/56H04L29/06
CPCH04L65/1016H04L65/1073H04L29/06217H04L65/105H04L29/06333H04L29/06285H04L65/1045
Inventor 李志军郝振武丁兆明
Owner ZTE CORP
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