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Method, apparatus, and system for disaster recovery of IMS

  • US 9,883,380 B2
  • Filed: 03/20/2017
  • Issued: 01/30/2018
  • Est. Priority Date: 09/28/2007
  • Status: Active Grant
First Claim
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1. An IP Multimedia Subsystem (IMS), comprising:

  • a Call Session Control Function (CSCF), with the CSCF being configured to;

    obtain information of registered IMS Private User Identities (IMPIs) that are associated with an IMS Public User Identity (IMPU) in an IMS subscription transmitted by a network storage device;

    determine at least one IMPI that was received from the network storage device is not registered in the CSCF;

    request user service configuration data of the IMPU and user backup data of IMPIs associated with the IMPU from the network storage device, based upon the determining; and

    receive the user service configuration data of the IMPU and the user backup data of the IMPIs associated with the IMPU in a response returned by the network storage device, wherein the user service configuration data of the IMPU and the user backup data of the IMPIs associated with the IMPU is used by the CSCF for recovering a corresponding service; and

    the network storage device, with the network storage device being configured to;

    send the information of registered IMPIs that are associated with the IMPU to the CSCF;

    receive a request for the user service configuration data of the IMPU and the user backup data of IMPIs associated with the IMPU from the S-CSCF; and

    send the user service configuration data of the IMPU and the user backup data of the IMPIs associated with the IMPU to the CSCF.

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