Patents by Inventor Jayasri Gunaratnam

Jayasri Gunaratnam 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: 9326227
    Abstract: Reject code handling is utilized for a more time-efficient selection of data-capable networks.
    Type: Grant
    Filed: February 12, 2010
    Date of Patent: April 26, 2016
    Assignee: BlackBerry Limited
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Haight Swann, Hugh Hind, Bao Quoc Nguyen, Darcy Richard Phipps
  • Patent number: 8731602
    Abstract: A network selection method for a mobile station which is associated with a Home Public Land Mobile Network (HPLMN) identified by a home Mobile Network Code (MNC) and Mobile Country Code (MCC) pair. The mobile station identifies a plurality of PLMNs in a geographic area, and selects a non-home PLMN identified by a non-home MNC/MCC pair and designated as a Registered PLMN (RPLMN). In response to regaining signal coverage from an out-of-coverage condition with the RPLMN, or being powered-on from a power-off s, tate entered while operating with the RPLMN, the mobile station selects the HPLMN if the HPLMN identified by the home MNC/MCC pair is available. Otherwise, if the HPLMN is unavailable and the RPLMN identified by the non-home MNC/MCC pair is available, the mobile station selects the RPLMN. However, if the RPLMN is unavailable, the mobile station selects an alternate PLMN in accordance with an automatic or manual network selection method.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: May 20, 2014
    Assignee: BlackBerry Limited
    Inventors: Jayasri Gunaratnam, Noushad S Naqvi, Bryan Taylor, Craig Ian Haight Swann, Hugh R Hind, Bao Quoc Nguyen, Darcy Richard Phipps
  • Patent number: 8275401
    Abstract: A mobile device sends to a wireless network a request for establishing a service. In response to a rejection of the request, the device reattempts the request so long as the total number of requests is less than a predetermined value. When the total number of rejected requests is greater than or equal to the predetermined value, the device selects a different wireless network with which to establish the communication service if the wireless network is a non-home network. Otherwise, if the wireless network is the home network, the mobile device runs a timer which is initialized with an internal timer value instead of a network timer value when the internal timer value is less than the network timer value. In response to an expiration of the timer, the mobile device sends to the wireless network another one or more requests for establishing the service.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: September 25, 2012
    Assignee: Research In Motion Limited
    Inventors: Jayasri Gunaratnam, Bryan Taylor, Bao Quoc Nguyen, Hugh Hind, Noushad Naqvi, Darcy Richard Phipps, Craig Ian Haight Swann
  • Publication number: 20120115478
    Abstract: A mobile device sends to a wireless network a request for establishing a service. In response to a rejection of the request, the device reattempts the request so long as the total number of requests is less than a predetermined value. When the total number of rejected requests is greater than or equal to the predetermined value, the device selects a different wireless network with which to establish the communication service if the wireless network is a non-home network. Otherwise, if the wireless network is the home network, the mobile device runs a timer which is initialized with an internal timer value instead of a network timer value when the internal timer value is less than the network timer value. In response to an expiration of the timer, the mobile device sends to the wireless network another one or more requests for establishing the service.
    Type: Application
    Filed: January 13, 2012
    Publication date: May 10, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Jayasri Gunaratnam, Bryan Taylor, Bao Quoc Nguyen, Hugh Hind, Noushad Naqvi, Darcy Richard Phipps, Craig Ian Haight Swann
  • Patent number: 8107985
    Abstract: In one illustrative method, a method in a mobile station for use in reducing delays for data communications is described. The mobile station causes a request for packet data service to be sent to a wireless communication network. If the request for the packet data service is denied in response to the request, then the mobile station is set in a deregistered state. In addition, the mobile station initializes a timer with an initial value that is less than a periodic location update timer value which is broadcasted by the wireless communication network, and runs the timer. In response to an expiration of the timer, the mobile station causes another request for the packet data service to be sent to the wireless communication network.
    Type: Grant
    Filed: June 10, 2010
    Date of Patent: January 31, 2012
    Assignee: Research In Motion Limited
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Haight Swann, Darcy Richard Phipps, Hugh Hind, Bao Quoc Nguyen
  • Publication number: 20110134815
    Abstract: In one illustrative method, a method in a mobile station for use in reducing delays for data communications is described. The mobile station causes a request for packet data service to be sent to a wireless communication network. If the request for the packet data service is denied in response to the request, then the mobile station is set in a deregistered state. In addition, the mobile station initializes a timer with an initial value that is less than a periodic location update timer value which is broadcasted by the wireless communication network, and runs the timer. In response to an expiration of the timer, the mobile station causes another request for the packet data service to be sent to the wireless communication network.
    Type: Application
    Filed: June 10, 2010
    Publication date: June 9, 2011
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Craig Ian Haight Swann, Hugh Hind, Bao Quoc Nguyen, Darcy Richard Phipps
  • Publication number: 20110021190
    Abstract: A network selection method for a mobile station which is associated with a Home Public Land Mobile Network (HPLMN) identified by a home Mobile Network Code (MNC) and Mobile Country Code (MCC) pair. The mobile station identifies a plurality of PLMNs in a geographic area, and selects a non-home PLMN identified by a non-home MNC/MCC pair and designated as a Registered PLMN (RPLMN). In response to regaining signal coverage from an out-of-coverage condition with the RPLMN, or being powered-on from a power-off state entered while operating with the RPLMN, the mobile station selects the HPLMN if the HPLMN identified by the home MNC/MCC pair is available. Otherwise, if the HPLMN is unavailable and the RPLMN identified by the non-home MNC/MCC pair is available, the mobile station selects the RPLMN. However, if the RPLMN is unavailable, the mobile station selects an alternate PLMN in accordance with an automatic or manual network selection method.
    Type: Application
    Filed: October 4, 2010
    Publication date: January 27, 2011
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Jayasri Gunaratnam, Noushad S. Naqvi, Bryan Taylor, Craig Ian Haight Swann, Hugh R. Hind, Bao Quoc Nguyen, Darcy Richard Phipps
  • Patent number: 7818024
    Abstract: In one illustrative example involving automatic network selection, a mobile station selects and operates with a non-home communication network. The mobile station then experiences an out-of-coverage condition with the non-home network (or a power down condition) but subsequently regains signal coverage (or is powered back on) in response, the mobile station scans to identify a plurality of communication networks in its coverage area. If a home network is identified as being available, the mobile station selects and operates with the home network. Otherwise, if the previous non-home network (e.g. the RPLMN) is identified as being available, the mobile station continues operation with the previous non-home network.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: October 19, 2010
    Assignee: Research In Motion Limited
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Haight Swann, Darcy Richard Phipps, Hugh Hind, Bao Quoc Nguyen
  • Publication number: 20100203888
    Abstract: Reject code handling is utilized for a more time-efficient selection of data-capable networks.
    Type: Application
    Filed: February 12, 2010
    Publication date: August 12, 2010
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Haight Swann, Hugh Hind, Bao Quoc Nguyen, Darcy Richard Phipps
  • Patent number: 7747266
    Abstract: In one illustrative method, a periodic location update timer value is broadcasted by a wireless communication network and received and stored in memory of a mobile station. A request for data service is transmitted by the mobile station to a wireless communication network, and the request is reattempted at least one time in response to identifying a rejection of the request. If the request for the data service is accepted in response to the request, the mobile station operates in the wireless communication network using the data service. On the other hand, if the request for the data service is not accepted, the mobile station is set in a data service deregistered state. A timer is initialized with an initial value that is less than the periodic location update timer value and started. In response to an expiration of the timer, the mobile station repeats the transmission of the request for the data service and any reattempts in response to any rejections of the request.
    Type: Grant
    Filed: May 23, 2008
    Date of Patent: June 29, 2010
    Assignee: Research In Motion Limited
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Haight Swann, Hugh Hind, Bao Quoc Nguyen, Darcy Richard Phipps
  • Patent number: 7689219
    Abstract: Reject code handling is utilized for a more time-efficient selection of data-capable networks. One illustrative method for use in selecting a wireless communication network for communications involves the steps of causing a request for data connectivity to be transmitted through a first wireless network; reattempting the request for data connectivity through the first wireless network one or more times if a reject code comprising a non-critical error is received in response to the request for data connectivity through the first wireless network; and attempting to select a second wireless network for communications without reattempting the request for data connectivity through the first wireless network one or more times if a reject code comprising a critical error is received in response to the request for data connectivity through the first wireless network.
    Type: Grant
    Filed: February 14, 2007
    Date of Patent: March 30, 2010
    Assignee: Research In Motion Limited
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Haight Swann, Hugh Hind, Bao Quoc Nguyen, Darcy Richard Phipps
  • Publication number: 20100048208
    Abstract: Reject code handling is utilized for a more time-efficient selection of data-capable networks. One illustrative method for use in selecting a wireless communication network for communications involves the steps of causing a request for data connectivity to be transmitted through a first wireless network; reattempting the request for data connectivity through the first wireless network one or more times if a reject code comprising a non-critical error is received in response to the request for data connectivity through the first wireless network; and attempting to select a second wireless network for communications without reattempting the request for data connectivity through the first wireless network one or more times if a reject code comprising a critical error is received in response to the request for data connectivity through the first wireless network.
    Type: Application
    Filed: February 14, 2007
    Publication date: February 25, 2010
    Applicant: Research In Motion Limited
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Swann, Hugh Hind, Bao Nguyen, Darcy Phipps
  • Publication number: 20080220800
    Abstract: In one illustrative method, a periodic location update timer value is broadcasted by a wireless communication network and received and stored in memory of a mobile station. A request for data service is transmitted by the mobile station to a wireless communication network, and the request is reattempted at least one time in response to identifying a rejection of the request. If the request for the data service is accepted in response to the request, the mobile station operates in the wireless communication network using the data service. On the other hand, if the request for the data service is not accepted, the mobile station is set in a data service deregistered state. A timer is initialized with an initial value that is less than the periodic location update timer value and started. In response to an expiration of the timer, the mobile station repeats the transmission of the request for the data service and any reattempts in response to any rejections of the request.
    Type: Application
    Filed: May 23, 2008
    Publication date: September 11, 2008
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Craig Ian Haight Swann, Hugh Hind, Bao Quoc Nguyen, Darcy Richard Phipps
  • Patent number: 7398089
    Abstract: Reduced delays in data service offered by data-capable networks are provided. One illustrative method includes the steps of receiving and storing in memory a first timer value which is broadcasted by a wireless communication network for use in the mobile station; causing a request for data connectivity to be transmitted through the wireless network, and reattempting the request up to a plurality of times when data connectivity fails; after the one or more reattempted requests for data connectivity fail, activating a timer based on a second timer value which is less than the first timer value; and repeating the transmitting of requests for data connectivity after expiration of the timer.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: July 8, 2008
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Haight Swann, Darcy Richard Phipps, Hugh Hind, Bao Quoc Nguyen
  • Patent number: 7366510
    Abstract: Network selection methods and apparatus with home network prioritization in country border regions are disclosed. In one illustrative example, a mobile station (200) is associated with a home communication network (402) having a home mobile country code (MCC). Being outside of the home network country, however, the mobile station (200) selects and operates with a non-home communication network (406) having a visiting MCC. After expiration of a timer, the mobile station (200) scans to identify a plurality of networks in a coverage area within which the mobile station (200) is operating. If the home network (402) having the home MCC is identified as being available, the mobile station (200) selects and operates with the home network (200). Otherwise, if the non-home network (406) having the visiting MCC is identified as being available, the mobile station (200) selects and operates with the non-home network (406).
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: April 29, 2008
    Assignee: Research In Motion Limited
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Haight Swann, Darcy Richard Phipps, Hugh Hind, Bao Quoc Nguyen
  • Publication number: 20080081622
    Abstract: Reject code handling is utilized for a more time-efficient selection of data-capable networks. One illustrative method for use in selecting a wireless communication network for communications involves the steps of causing a request for data connectivity to be transmitted through a first wireless network; reattempting the request for data connectivity through the first wireless network one or more times if a reject code comprising a non-critical error is received in response to the request for data connectivity through the first wireless network; and attempting to select a second wireless network for communications without reattempting the request for data connectivity through the first wireless network one or more times if a reject code comprising a critical error is received in response to the request for data connectivity through the first wireless network.
    Type: Application
    Filed: February 14, 2007
    Publication date: April 3, 2008
    Applicant: Research In Motion Limited
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Swann, Hugh Hind, Bao Nguyen, Darcy Phipps
  • Patent number: 7197312
    Abstract: Reject code handling is utilized for a more time-efficient selection of data-capable networks. One illustrative method for use in selecting a wireless communication network for communications involves the steps of causing a request for data connectivity to be transmitted through a first wireless network; reattempting the request for data connectivity through the first wireless network one or more times if a reject code comprising a non-critical error is received in response to the request for data connectivity through the first wireless network; and attempting to select a second wireless network for communications without reattempting the request for data connectivity through the first wireless network one or more times if a reject code comprising a critical error is received in response to the request for data connectivity through the first wireless network.
    Type: Grant
    Filed: November 12, 2004
    Date of Patent: March 27, 2007
    Assignee: Research In Motion Limited
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Haight Swann, Hugh Hind, Bao Quoc Nguyen, Darcy Richard Phipps
  • Publication number: 20050227720
    Abstract: Reject code handling is utilized for a more time-efficient selection of data-capable networks. One illustrative method for use in selecting a wireless communication network for communications involves the steps of causing a request for data connectivity to be transmitted through a first wireless network; reattempting the request for data connectivity through the first wireless network one or more times if a reject code comprising a non-critical error is received in response to the request for data connectivity through the first wireless network; and attempting to select a second wireless network for communications without reattempting the request for data connectivity through the first wireless network one or more times if a reject code comprising a critical error is received in response to the request for data connectivity through the first wireless network.
    Type: Application
    Filed: November 12, 2004
    Publication date: October 13, 2005
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Swann, Hugh Hind, Bao Nguyen, Darcy Phipps
  • Publication number: 20050227719
    Abstract: Reduced delays in data service offered by data-capable networks are provided. One illustrative method includes the steps of receiving and storing in memory a first timer value which is broadcasted by a wireless communication network for use in the mobile station; causing a request for data connectivity to be transmitted through the wireless network, and reattempting the request up to a plurality of times when data connectivity fails; after the one or more reattempted requests for data connectivity fail, activating a timer based on a second timer value which is less than the first timer value; and repeating the transmitting of requests for data connectivity after expiration of the timer.
    Type: Application
    Filed: November 12, 2004
    Publication date: October 13, 2005
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Swann, Darcy Phipps, Hugh Hind, Bao Nguyen
  • Patent number: RE43523
    Abstract: Reduced delays in data service offered by data-capable networks are provided. One illustrative method includes the steps of receiving and storing in memory a first timer value which is broadcasted by a wireless communication network for use in the mobile station; causing a request for data connectivity to be transmitted through the wireless network, and reattempting the request up to a plurality of times when data connectivity fails; after the one or more reattempted requests for data connectivity fail, activating a timer based on a second timer value which is less than the first timer value; and repeating the transmitting of requests for data connectivity after expiration of the timer.
    Type: Grant
    Filed: September 2, 2009
    Date of Patent: July 17, 2012
    Assignee: Research In Motion Limited
    Inventors: Jayasri Gunaratnam, Noushad Naqvi, Bryan Taylor, Craig Ian Haight Swann, Hugh Hind, Bao Quoc Nguyen, Darcy Richard Phipps