Patents by Inventor David Po-Hwa Ma

David Po-Hwa Ma 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).

  • Patent number: 9749330
    Abstract: A method and system for data session establishment from a mobile device in a multiple networks scenario, the method including, checking whether an identifier for an first network is on a blacklist on the mobile device; if the first network identifier is not on the blacklist, attempting to establish a data connection with the first network; and if the first network identifier is on the blacklist, establishing a data connection with a second network. The method and system for data session establishment include deriving and maintaining the blacklist.
    Type: Grant
    Filed: September 4, 2015
    Date of Patent: August 29, 2017
    Assignee: BlackBerry Limited
    Inventors: David Po-Hwa Ma, Asif Hossain, Lan Lu, Kwong Hang Kevin Chan
  • Publication number: 20160105440
    Abstract: A method and system for data session establishment from a mobile device in a multiple networks scenario, the method including, checking whether an identifier for an first network is on a blacklist on the mobile device; if the first network identifier is not on the blacklist, attempting to establish a data connection with the first network; and if the first network identifier is on the blacklist, establishing a data connection with a second network. The method and system for data session establishment include deriving and maintaining the blacklist.
    Type: Application
    Filed: September 4, 2015
    Publication date: April 14, 2016
    Inventors: David Po-Hwa MA, Asif HOSSAIN, Lan LU, Kwong Hang Kevin CHAN
  • Patent number: 9131379
    Abstract: A method and system for data session establishment from a mobile device in a multiple networks scenario, the method including, checking whether an identifier for an first network is on a blacklist on the mobile device; if the first network identifier is not on the blacklist, attempting to establish a data connection with the first network; and if the first network identifier is on the blacklist, establishing a data connection with a second network. The method and system for data session establishment include deriving and maintaining the blacklist.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: September 8, 2015
    Assignee: BlackBerry Limited
    Inventors: David Po-Hwa Ma, Asif Hossain, Lan Lu, Kwong Hang Kevin Chan
  • Publication number: 20140370853
    Abstract: A method and system for data session establishment from a mobile device in a multiple networks scenario, the method including, checking whether an identifier for an first network is on a blacklist on the mobile device; if the first network identifier is not on the blacklist, attempting to establish a data connection with the first network; and if the first network identifier is on the blacklist, establishing a data connection with a second network. The method and system for data session establishment include deriving and maintaining the blacklist.
    Type: Application
    Filed: September 2, 2014
    Publication date: December 18, 2014
    Inventors: David Po-Hwa MA, Asif HOSSAIN, Lan LU, Kwong Hang Kevin CHAN
  • Patent number: 8310992
    Abstract: Method and apparatus for data access for a mobile terminal comprising a module for determining whether first and second modes of wireless network coverage is available, a module for selecting the first mode if available, a module for attempting access via the second mode on failure to establish access via the first mode and a module for monitoring availability of the first mode. Even when a connection is established via the second mode, availability of the first mode is monitored and access attempted, when second mode connection is idle.
    Type: Grant
    Filed: June 28, 2011
    Date of Patent: November 13, 2012
    Assignee: Research In Motion Limited
    Inventors: Asif Hossain, David Po-Hwa Ma