Patents by Inventor Hao-Chen CHOU

Hao-Chen CHOU 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).

  • Apparatuses and methods for robust moving between a roaming 3GPP network and a non-3GPP network
    Patent number: 11528592
    Abstract: A method for robust moving between a roaming Third Generation Partnership Project (3GPP) network and a non-3GPP network is provided. The method includes the steps of: connecting with a home 3GPP network over one of a roaming 3GPP network and a non-3GPP network by a User Equipment (UE); performing a first initial attach procedure with the home 3GPP network over the other of the roaming 3GPP network and the non-3GPP network by the UE in response to the UE moving from the one of the roaming 3GPP network and the non-3GPP network to the other of the roaming 3GPP network and the non-3GPP network; and keeping the connection over the one of the roaming 3GPP network and the non-3GPP network by the UE during the first initial attach procedure over the other of the roaming 3GPP network and the non-3GPP network.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: December 13, 2022
    Assignee: MEDIATEK INC.
    Inventors: Yung-Liang Tsou, Hao-Chen Chou, Szu-Chieh Chiu, Chien-Yi Wang, Rohit Naik
  • ENHANCED CALL CONTROL USING USER EQUIPMENT (UE)-TRIGGERED FALLBACK PROCEDURE
    Publication number: 20220369197
    Abstract: A method for enhanced call control using User Equipment (UE)-triggered fallback procedure is provided. A UE starts a guard timer in response to initiating or receiving an Internet Protocol (IP) Multimedia Subsystem (IMS) call in a mobile communication network which utilizes a first Radio Access Technology (RAT). The UE determines whether a condition for call continuation in the mobile communication network is met when the guard timer expires. The UE triggers a fallback from the first RAT to a second RAT in response to the condition for call continuation in the mobile communication network not being met.
    Type: Application
    Filed: April 13, 2022
    Publication date: November 17, 2022
    Inventors: Rohit NAIK, Shu-Lin YANG, Hao-Chen CHOU
  • APPARATUSES AND METHODS FOR ROBUST MOVING BETWEEN A ROAMING 3GPP NETWORK AND A NON-3GPP NETWORK
    Publication number: 20220038885
    Abstract: A method for robust moving between a roaming Third Generation Partnership Project (3GPP) network and a non-3GPP network is provided. The method includes the steps of: connecting with a home 3GPP network over one of a roaming 3GPP network and a non-3GPP network by a User Equipment (UE); performing a first initial attach procedure with the home 3GPP network over the other of the roaming 3GPP network and the non-3GPP network by the UE in response to the UE moving from the one of the roaming 3GPP network and the non-3GPP network to the other of the roaming 3GPP network and the non-3GPP network; and keeping the connection over the one of the roaming 3GPP network and the non-3GPP network by the UE during the first initial attach procedure over the other of the roaming 3GPP network and the non-3GPP network.
    Type: Application
    Filed: August 3, 2020
    Publication date: February 3, 2022
    Inventors: Yung-Liang TSOU, Hao-Chen CHOU, Szu-Chieh CHIU, Chien-Yi WANG, Rohit NAIK