Method and device for realizing terminal called service restoration

A service recovery and terminal technology, applied in the field of communication, can solve the problems of increased deployment difficulty, complex networking, and high dependence on PCRF

Active Publication Date: 2017-03-08
HUAWEI TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Therefore, in the P-CSCF disaster recovery scenario, the reliance on PCRF is high
And when the terminal roams, it needs to involve the PCRF of the home location and the PCRF of the visiting location. The networking is more complicated, which increases the difficulty of deployment.

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  • Method and device for realizing terminal called service restoration
  • Method and device for realizing terminal called service restoration
  • Method and device for realizing terminal called service restoration

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Embodiment Construction

[0067] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0068] Embodiments of the present invention provide a method and device for recovering the called service of a terminal, so that when a P-CSCF fails, it is not necessary to notify the terminal of the address of the alternative P-CSCF through the PRCF, which reduces the difficulty of deployment and avoids the need to communicate with the P-CSCF. Signaling interaction between PCRFs reduces signaling overhead. Wherein, the method and the d...

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Abstract

The invention discloses a method and a device for realizing terminal called service restoration. Triggering of a terminal to re-register a standby P-CSCF via a PCRF is not needed, deployment difficulty is reduced, and resource is saved. The method comprises steps in that, a standby P-CSCF / SBC receives a request message sent by an S-CSCF, and the request message is generated when a fault of the P-CSCF / SBC appears, wherein the P-CSCF / SBC is registered by a user terminal corresponding to a called request received by the S-CSCF; the standby P-CSCF / SBC determines a home gateway of the user terminal according to a mapping relationship between pre-established gateways and user terminals belonging to the gateways; and the standby P-CSCF / SBC sends a trigger message to the home gateway via a TWAMP link between the standby P-CSCF / SBC and the home gateway, and the trigger message is used to trigger the user terminal to re-register to the standby P-CSCF / SBC to carry the called service of the user terminal.

Description

technical field [0001] The present invention relates to the field of communication technology, in particular to a method and device for realizing recovery of terminal called services. Background technique [0002] The call session control function (English: Call Session Control Function, abbreviated: CSCF) is a functional entity in the IP Multimedia Subsystem (English: IP Multimedia Subsystem, abbreviated IMS), and is mainly responsible for processing signaling control during a multimedia call session. CSCF can be divided into proxy CSCF (English: Proxy CSCF, abbreviated: P-CSCF), inquiring CSCF (English: Interrogating CSCF, abbreviated: I-CSCF), and serving CSCF (English: Serving CSCF, abbreviated: S-CSCF). [0003] In the process of service control, if the P-CSCF fails, if the user terminal registered with the P-CSCF is called, and the S-CSCF finds that the P-SCCF fails when managing the called service, it will The user terminal cannot be contacted through the P-CSCF, res...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04W24/02
CPCH04W24/02H04L65/1016H04L41/0654
Inventor 王新勇李云飞
Owner HUAWEI TECH CO LTD
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