Patents by Inventor Hamid Syed MAHMOOD

Hamid Syed MAHMOOD 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).

  • METHOD AND APPARATUS FOR HANDLING CIRCUIT SWITCHED CALLS AT A USER EQUIPMENT
    Publication number: 20220030472
    Abstract: A method at a user equipment including detecting that a circuit switched (CS) call has been requested at the user equipment; if a most recent registration attempt or registration update attempt with a network of a first radio access technology (RAT) resulted in an abnormal state, registering with a network of a second RAT; and initiating the CS call with the network of the second RAT.
    Type: Application
    Filed: October 5, 2021
    Publication date: January 27, 2022
    Inventors: Hamid Syed MAHMOOD, Mathurin WADJEU
  • Method and apparatus for handling circuit switched calls at a user equipment
    Patent number: 11146994
    Abstract: A method at a user equipment including detecting that a circuit switched (CS) call has been requested at the user equipment; if a most recent registration attempt or registration update attempt with a network of a first radio access technology (RAT) resulted in an abnormal state, registering with a network of a second RAT; and initiating the CS call with the network of the second RAT.
    Type: Grant
    Filed: June 5, 2020
    Date of Patent: October 12, 2021
    Assignee: BlackBerry Limited
    Inventors: Hamid Syed Mahmood, Mathurin Wadjeu
  • METHOD AND APPARATUS FOR HANDLING CIRCUIT SWITCHED CALLS AT A USER EQUIPMENT
    Publication number: 20200305034
    Abstract: A method at a user equipment including detecting that a circuit switched (CS) call has been requested at the user equipment; if a most recent registration attempt or registration update attempt with a network of a first radio access technology (RAT) resulted in an abnormal state, registering with a network of a second RAT; and initiating the CS call with the network of the second RAT.
    Type: Application
    Filed: June 5, 2020
    Publication date: September 24, 2020
    Inventors: Hamid Syed MAHMOOD, Mathurin WADJEU
  • Method and apparatus for handling circuit switched calls at a user equipment
    Patent number: 10736000
    Abstract: A method at a user equipment including detecting that a circuit switched (CS) call has been requested at the user equipment; if a most recent registration attempt or registration update attempt with a network of a first radio access technology (RAT) resulted in an abnormal state, registering with a network of a second RAT; and initiating the CS call with the network of the second RAT.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: August 4, 2020
    Assignee: BlackBerry Limited
    Inventors: Hamid Syed Mahmood, Mathurin Wadjeu
  • METHOD AND APPARATUS FOR HANDLING CIRCUIT SWITCHED CALLS AT A USER EQUIPMENT
    Publication number: 20180242203
    Abstract: A method at a user equipment including detecting that a circuit switched (CS) call has been requested at the user equipment; if a most recent registration attempt or registration update attempt with a network of a first radio access technology (RAT) resulted in an abnormal state, registering with a network of a second RAT; and initiating the CS call with the network of the second RAT.
    Type: Application
    Filed: April 18, 2018
    Publication date: August 23, 2018
    Inventors: Hamid Syed MAHMOOD, Mathurin WADJEU
  • Method and apparatus for handling circuit switched calls at a user equipment
    Patent number: 9973978
    Abstract: A method at a user equipment including detecting that a circuit switched (CS) call has been requested at the user equipment; if a most recent registration attempt or registration update attempt with a network of a first radio access technology (RAT) resulted in an abnormal state, registering with a network of a second RAT; and initiating the CS call with the network of the second RAT.
    Type: Grant
    Filed: August 8, 2016
    Date of Patent: May 15, 2018
    Assignee: BlackBerry Limited
    Inventors: Hamid Syed Mahmood, Mathurin Wadjeu
  • METHOD AND APPARATUS FOR HANDLING CIRCUIT SWITCHED CALLS AT A USER EQUIPMENT
    Publication number: 20160353336
    Abstract: A method at a user equipment including detecting that a circuit switched (CS) call has been requested at the user equipment; if a most recent registration attempt or registration update attempt with a network of a first radio access technology (RAT) resulted in an abnormal state, registering with a network of a second RAT; and initiating the CS call with the network of the second RAT.
    Type: Application
    Filed: August 8, 2016
    Publication date: December 1, 2016
    Inventors: Hamid Syed MAHMOOD, Mathurin WADJEU