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Tree-based broadcasting service over push-to-talk mobile IP network

  • US 9,692,904 B2
  • Filed: 12/17/2015
  • Issued: 06/27/2017
  • Est. Priority Date: 03/06/2006
  • Status: Active Grant
First Claim
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1. A server for generating a plurality of messages for inviting communication devices to a conference, comprising:

  • a conference establishing unit configured to establish the conference with a plurality of first communication devices,an identification unit configured to identify a plurality of second communication devices to be invited to the conference,a determination unit configured to determine which of the plurality of second communication devices are already participating in the conference, anda message generating unit configured to generate messages for inviting to the conference the second communication devices which are not already participating in the conference.

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