Patents by Inventor David HERAS CANO

David HERAS CANO 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).

  • Methods and apparatus for resolving data inconsistencies in an IMS network
    Patent number: 9509811
    Abstract: A Serving Call Session Control Function, S-CSCF, within an IP Multimedia Subsystem, IMS, core network. Notifications are sent to a Home Subscriber Server, HSS, of the IMS core network, indicating IMS registration state changes of users. Delivery failure of a notification of an IMS registration state change sent to a HSS and relating to a given user is detected. An association between an identifier of the given user and an indication of said delivery failure is stored in order to indicate a loss of IMS registration state synchronization for the given user between the S-CSCF and the HSS. An event requiring an IMS registration state change for the user is detected. A determination is made that a delivery failure indication associated with the user's identifier is stored. The HSS is notified indicating the required IMS registration state change and of a previous loss of the IMS registration state synchronization.
    Type: Grant
    Filed: December 28, 2012
    Date of Patent: November 29, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Emiliano Merino Vazquez, Tobias Austrell, Francisca Bejarano Garcia, David Heras Cano
  • METHODS AND APPARATUS FOR RESOLVING DATA INCONSISTENCIES IN AN IMS NETWORK
    Publication number: 20150312387
    Abstract: A Serving Call Session Control Function, S-CSCF, within an IP Multimedia Subsystem, IMS, core network. Notifications are sent to a Home Subscriber Server, HSS, of the IMS core network, indicating IMS registration state changes of users. Delivery failure of a notification of an IMS registration state change sent to a HSS and relating to a given user is detected. An association between an identifier of the given user and an indication of said delivery failure is stored in order to indicate a loss of IMS registration state synchronization for the given user between the S-CSCF and the HSS. An event requiring an IMS registration state change for the user is detected. A determination is made that a delivery failure indication associated with the user's identifier is stored. The HSS is notified indicating the required IMS registration state change and of a previous loss of the IMS registration state synchronization.
    Type: Application
    Filed: December 28, 2012
    Publication date: October 29, 2015
    Inventors: Emiliano MERINO VAZQUEZ, Tobias AUSTRELL, Francisca BEJARANO GARCIA, David HERAS CANO