Patents by Inventor Francois LEYGUES

Francois LEYGUES has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Use of a distributed hash table to federate many small-sized IMS core infrastructures
    Patent number: 9083744
    Abstract: Multimedia subsystem, IMS, containing a set of call session control function elements, CSCF, suitable for sending a signaling message (m) between a first communication client (T) connected to said multimedia subsystem and at least one second communication client, where this second communication client may be connected to said multimedia subsystem or remote and accessible through an interrogating functional element, I-CSCF, and routing methods used to determine a path for the transmission of the signaling message, based on a logical address contained in the signaling message. The multimedia subsystem, IMS, is characterized in that the routing methods implement a distributed hashing table.
    Type: Grant
    Filed: January 29, 2008
    Date of Patent: July 14, 2015
    Assignee: Alcatel Lucent
    Inventor: Francois Leygues
  • USE OF A DISTRIBUTED HASH TABLE TO FEDERATE MANY SMALL-SIZED IMS CORE INFRASTRUCTURES
    Publication number: 20080181200
    Abstract: Multimedia subsystem, IMS, containing a set of call session control function elements, CSCF, suitable for sending a signaling message (m) between a first communication client (T) connected to said multimedia subsystem and at least one second communication client, where this second communication client may be connected to said multimedia subsystem or remote and accessible through an interrogating functional element, I-CSCF, and routing methods used to determine a path for the transmission of the signaling message, based on a logical address contained in the signaling message. The multimedia subsystem, IMS, is characterized in that the routing methods implement a distributed hashing table.
    Type: Application
    Filed: January 29, 2008
    Publication date: July 31, 2008
    Applicant: Alcatel Lucent
    Inventor: Francois LEYGUES