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Method and apparatus for configuring IP multimedia subsystem network elements

  • US 9,661,036 B2
  • Filed: 04/12/2016
  • Issued: 05/23/2017
  • Est. Priority Date: 12/06/2010
  • Status: Active Grant
First Claim
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1. A non-transitory, machine-readable storage medium, comprising executable instructions that, when executed by a processing system including a processor, facilitate performance of operations, comprising:

  • generating, from a communication device, a registration request;

    submitting the request to a call session function and receiving an indication that the communication device is authenticated, wherein a subscriber profile for the communication device is retrieved responsive to the registration request;

    obtaining a uniform resource identifier from the subscriber profile;

    providing the uniform resource identifier to a domain name system;

    obtaining a multicast internet protocol address from the domain name system based on an association between the uniform resource identifier and a multicast group to which a plurality of application servers have been assigned, wherein the multicast protocol corresponds to an internet group management protocol;

    providing a registration message to a plurality of internet protocol multimedia subsystem network elements according to the multicast internet protocol address;

    determining, from the subscriber profile, an expected number of acknowledgement responses to be received from the plurality of internet protocol multimedia subsystem network elements;

    transmitting a registration confirmation message to the communication device responsive to a determination that the expected number of acknowledgment responses was received;

    receiving a request to deregister the communication device;

    transmitting a deregistration message to the plurality of internet protocol multimedia subsystem network elements according to the multicast internet protocol address; and

    transmitting a unicast deregistration message to one of the plurality of internet protocol multimedia subsystem network elements failing to submit a response associated with the deregistration message, wherein the plurality of internet protocol multimedia subsystem network elements comprise a plurality of application servers.

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