Patents by Inventor Khaledul Islam

Khaledul Islam 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: 9357451
    Abstract: Methods, device and apparatus for use in a cellular network are disclosed. An example method disclosed herein comprises: receiving, via the cellular network, a bias parameter of a neighbor cell; and determining based on the bias parameter whether or not to perform at least one mobility measurement.
    Type: Grant
    Filed: December 7, 2012
    Date of Patent: May 31, 2016
    Assignee: BlackBerry Limited
    Inventors: Muhammad Khaledul Islam, Andrew Farnsworth
  • Patent number: 9326194
    Abstract: A method, at a user equipment (‘UE’), the method: sending a request to a first network for Circuit Switched Fallback (‘CSFB’); receiving, responsive to the request, redirection information; acquiring a second network based on the redirection information; initiating establishment of Circuit Switched (‘CS’) voice radio bearers with the second network; waiting for a predetermined event to occur; after the predetermined event has occurred, establishing a Packet Switched (‘PS’) connection with the second network. Further, a method, at a network element, the method receiving a request for Circuit Switched Fallback (‘CSFB’) from a user equipment (‘UE’); sending, to the UE, redirection information; receiving a Routing Area Update (‘RAU’) message from the UE; waiting for a predetermined event to occur; upon the predetermined event occurring, responding to the RAU message.
    Type: Grant
    Filed: September 11, 2013
    Date of Patent: April 26, 2016
    Assignee: BlackBerry Limited
    Inventors: Muhammad Khaledul Islam, Jeffrey William Wirtanen
  • Patent number: 9326311
    Abstract: In some implementations, a method includes receiving a connection request from a user application. A service request is sent to a radio resource control (RRC) module. An indication of failure of or a rejection to the service request due to access class barring is received from the RRC module. A retry of the user application connection request is prevented until expiration of an access-class-barring timer of the RRC module that resulted in the access class barring.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: April 26, 2016
    Assignee: BlackBerry Limited
    Inventors: Jeffrey William Wirtanen, Muhammad Khaledul Islam
  • Patent number: 9307540
    Abstract: A method and apparatus for radio resource management in a wireless device is provided. A type of data connection to be established between the wireless device and a network is determined. A radio resource capability mode for the data connection based on resource requirements of the determined type of data connection is dynamically determined wherein the radio resource capability mode is selected from a plurality of radio resource capability modes operable by the wireless device within wireless technologies supported by the network. The determined radio resource capability mode is conveyed to the network during connection establishment between the wireless device and the network, wherein the radio resource capability mode is used by the network to determine radio resources to be allocated to the wireless device for the connection.
    Type: Grant
    Filed: September 15, 2014
    Date of Patent: April 5, 2016
    Assignee: BlackBerry Limited
    Inventors: Ozgur Ekici, Muhammad Khaledul Islam
  • Patent number: 9277427
    Abstract: A computer-readable medium having computer-readable instructions stored on the computer-readable medium for execution of the computer-readable instructions by a processor to use in a mobile device having a visual display is provided. The instructions comprise monitoring an operating temperature at the device and, when the monitored operating temperature is greater than a first threshold temperature, allowing only emergency communication and providing a visual indication indicating that only emergency communication is allowed.
    Type: Grant
    Filed: May 14, 2014
    Date of Patent: March 1, 2016
    Assignee: BlackBerry Limited
    Inventors: Xin Jin, Muhammad Khaledul Islam
  • Publication number: 20160014683
    Abstract: A method in a first wireless device, the method performing wireless network scanning to discover available wireless networks; and communicating results of the scanning to a second wireless device, the results containing information to enable the second wireless device to connect to at least one of the available wireless networks without the second wireless device having to perform the same wireless network scanning or reduce the amount of scanning required to connect to at least one of the available wireless network. Also a method in a first wireless device, the method receiving results of wireless network scanning performed on a second wireless device, the results containing information enabling the first wireless device to connect to at least one available wireless network discovered during the scanning without the first wireless device having to perform the same wireless network scanning.
    Type: Application
    Filed: September 23, 2015
    Publication date: January 14, 2016
    Inventors: Ozgur EKICI, Muhammad Khaledul ISLAM
  • Patent number: 9237509
    Abstract: Systems and methods for determining that a maximum number of IP sessions have been established are provided. There are instances when the mobile device transmits a request to the wireless network. According to an aspect, in the event that the maximum number of IP sessions is already established for the mobile device, the wireless network transmits a response indicating that the request cannot be fulfilled. The mobile device determines based on the response that the maximum number of IP sessions is already established, which allows the mobile device to determine the maximum number of IP sessions that can be supported so that IP sessions can be managed accordingly.
    Type: Grant
    Filed: September 14, 2012
    Date of Patent: January 12, 2016
    Assignee: BlackBerry Limited
    Inventors: Jeff Wirtanen, Jin Kim, M. Khaledul Islam, Trevor Plestid
  • Publication number: 20150351025
    Abstract: A method at a mobile device, and the mobile device, the method selecting a subset of radio access technologies available to the mobile device over which a predetermined set of services on the mobile device is available; and deactivating monitoring, or reducing a monitoring frequency, of at least one radio access technology not within the selected subset of radio access technologies.
    Type: Application
    Filed: August 10, 2015
    Publication date: December 3, 2015
    Inventors: Ozgur EKICI, Muhammad Khaledul ISLAM, Dimitrios PRODANOS
  • Publication number: 20150341770
    Abstract: A method and apparatus for automatically sending a data message from a mobile device to at least one recipient during or soon after an emergency voice call, the method having the steps of: determining whether the data message can be sent over the network during the emergency voice call, and if yes, creating and sending the data message; and if no, waiting until either the mobile device connects to a new network, wherein the method proceeds back to said determining step, or until the voice call has ended and then creating and sending the data message.
    Type: Application
    Filed: July 31, 2015
    Publication date: November 26, 2015
    Inventors: Muhammad Khaledul ISLAM, Jean-Philippe CORMIER, Farhad AHMED
  • Patent number: 9185216
    Abstract: A method is provided for indicating an IMS (Internet Protocol Multimedia Subsystem) emergency call back to a user equipment and an access network. The method comprises including in a message from a PSAP (Public Safety Answering Point) to the user equipment and the access network an indication that the emergency call back is from the PSAP.
    Type: Grant
    Filed: November 15, 2007
    Date of Patent: November 10, 2015
    Assignee: BlackBerry Limited
    Inventors: Rene W. Purnadi, M. Khaledul Islam
  • Publication number: 20150304923
    Abstract: Techniques for use in selecting a base station transceiver system for communication with a mobile station are described. The mobile station is connected to a first base station transceiver system, and scans to identify a second base station transceiver system for communication. The mobile station further identifies that the second base station transceiver system provides a predetermined communication service, and that the first base station transceiver system fails to provide the predetermined communication service. In response to identifying, the mobile station causes the second base station transceiver system to be selected for communication over the first base station transceiver system even if the signal quality of the second base station transceiver system is worse than that of the first base station transceiver system.
    Type: Application
    Filed: June 16, 2015
    Publication date: October 22, 2015
    Inventors: Muhammad Khaledul ISLAM, Asif HOSSAIN
  • Patent number: 9107128
    Abstract: A method is provided for managing a priority call in a serving cell. The method comprises, when a priority call is in progress in the serving cell, an access device in the serving cell determining an amount of resources available in the serving cell. The method further comprises when the amount of resources available in the serving cell is below a threshold, the access device causing at least one non-priority call in the serving cell to be handed over to a target cell.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: August 11, 2015
    Assignee: BlackBerry Limited
    Inventors: Chen-Ho Chin, Stefano Faccin, Muhammad Khaledul Islam, Mo-Han Fong
  • Patent number: 9107241
    Abstract: A method at a mobile device, and the mobile device, the method selecting a subset of radio access technologies available to the mobile device over which a predetermined set of services on the mobile device is available; and deactivating monitoring, or reducing a monitoring frequency, of at least one radio access technology not within the selected subset of radio access technologies.
    Type: Grant
    Filed: August 1, 2013
    Date of Patent: August 11, 2015
    Assignee: BlackBerry Limited
    Inventors: Ozgur Ekici, Muhammad Khaledul Islam, Dimitrios Prodanos
  • Patent number: 9100802
    Abstract: A method and apparatus for automatically sending a data message from a mobile device to at least one recipient during or soon after an emergency voice call, the method having the steps of: determining whether the data message can be sent over the network during the emergency voice call, and if yes, creating and sending the data message; and if no, waiting until either the mobile device connects to a new network, wherein the method proceeds back to said determining step, or until the voice call has ended and then creating and sending the data message.
    Type: Grant
    Filed: March 17, 2006
    Date of Patent: August 4, 2015
    Assignee: BlackBerry Limited
    Inventors: Muhammad Khaledul Islam, Jean-Philippe Cormier, Farhad Ahmed
  • Patent number: 9088976
    Abstract: A radio resource request in a radio access network (RAN) may be handled differently depending whether provision of the requested radio resource has been specified as optional (discretionary) or not optional (not discretionary). In the former case, the radio resource request may be discarded, rejected or delayed. In the latter case, the radio resource request may be accepted. In one embodiment, a running timer at a UE may indicate that a radio resource optionally to be provided was not provided by a RAN. When a subsequent request for the radio resource is accepted, the timer may be cleared. One or more UE applications may accordingly selectively subject user-plane data to be exchanged via the RAN, to a back-off delay scheme, to promoting acceptable responsiveness at UE applications that are, e.g. being actively used by a user. Radio resource requests may including RRC Connection Request and Cell Update messages.
    Type: Grant
    Filed: April 29, 2012
    Date of Patent: July 21, 2015
    Assignee: BlackBerry Limited
    Inventors: Muhammad Khaledul Islam, Ozgur Ekici, Jan Hendrik Lucas Bakker
  • Patent number: 9072034
    Abstract: Techniques for use in selecting a base station transceiver system for communication with a mobile station are described. The mobile station is connected to a first base station transceiver system, and scans to identify a second base station transceiver system for communication. The mobile station further identifies that the second base station transceiver system provides a predetermined communication service, and that the first base station transceiver system fails to provide the predetermined communication service. In response to identifying, the mobile station causes the second base station transceiver system to be selected for communication over the first base station transceiver system even if the signal quality of the second base station transceiver system is worse than that of the first base station transceiver system.
    Type: Grant
    Filed: July 25, 2013
    Date of Patent: June 30, 2015
    Assignee: BlackBerry Limited
    Inventors: Muhammad Khaledul Islam, Asif Hossain
  • Publication number: 20150173119
    Abstract: In some implementations, a method includes receiving a connection request from a user application. A service request is sent to a radio resource control (RRC) module. An indication of failure of or a rejection to the service request due to access class barring is received from the RRC module. A retry of the user application connection request is prevented until expiration of an access-class-barring timer of the RRC module that resulted in the access class barring.
    Type: Application
    Filed: December 13, 2013
    Publication date: June 18, 2015
    Inventors: Jeffrey William Wirtanen, Muhammad Khaledul Islam
  • Patent number: 9055517
    Abstract: A mobile device configured for communication in both packet and circuit switched domains. The mobile device includes a domain selector. The domain selector is configured, responsive to selection by a user of one of the packet switched and circuit switched domains, to promote mobile device communication via the selected one of the packet switched and circuit switched domains.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: June 9, 2015
    Assignee: BlackBerry Limited
    Inventors: Rene W. Purnadi, M. Khaledul Islam
  • Patent number: 9037167
    Abstract: A method and apparatus for transitioning states or modes on a user equipment, the method having the steps of receiving, at a network element, a transition indication; checking a radio resource profile for the user equipment; and making a transitioning decision at the network element based on the received transition indication and the radio resource profile.
    Type: Grant
    Filed: June 19, 2013
    Date of Patent: May 19, 2015
    Assignee: BlackBerry Limited
    Inventors: Muhammad Khaledul Islam, Jeffrey Wirtanen, Takashi Suzuki, Gordon Peter Young, Claude Arzelier
  • Patent number: 9026153
    Abstract: A method and apparatus for transitioning states or modes on a user equipment, the method having the steps of receiving, at a network element, a transition indication; checking a radio resource profile for the user equipment; and making a transitioning decision at the network element based on the received transition indication and the radio resource profile.
    Type: Grant
    Filed: June 25, 2012
    Date of Patent: May 5, 2015
    Assignee: BlackBerry Limited
    Inventors: Muhammad Khaledul Islam, Jeffrey Wirtanen, Takeshi Suzuki, Gordon Peter Young, Claude Arzelier