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: 9019877
    Abstract: A method and network element for sending a transition indication to transition a user equipment to a different state or mode, the method receiving a configuration message from a network; and transmitting a transition indication from the user equipment, the transition indication only includes a cause if the configuration message contains an inhibit transition indication. Also, a method and user equipment for processing a transitioning indication from a user equipment indicating the user equipment desires a transition to a different state or mode, the method comprising: receiving the transition indication from the user equipment; if the transition indication contains a cause: releasing a signaling connection of the user equipment or transitioning the user equipment to a different state or mode; and if the transition indication does not contain the cause: releasing the signaling connection.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: April 28, 2015
    Assignee: BlackBerry Limited
    Inventors: Gordon Peter Young, Takashi Suzuki, Claude Jean-Frederic Arzelier, Muhammad Khaledul Islam, Jeffrey William Wirtanen
  • Patent number: 8989734
    Abstract: The application relates to wireless network selection. The effect of wireless network selection upon operation time of the mobile device is considered in making the wireless network selection.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: March 24, 2015
    Assignee: Blackberry Limited
    Inventors: Ozgur Ekici, Muhammad Khaledul Islam, Dimitrios Prodanos, Jeffrey William Wirtanen
  • Patent number: 8983532
    Abstract: A method and apparatus for allowing varied functionality between a sending entity and a receiving entity, the method sending a first message from the sending entity to the receiving entity utilizing a first protocol, detecting an indication that the receiving entity did not recognize the first message or that the receiving entity did not fulfill a request in the first message, and sending a second message from the sending entity to the receiving entity utilizing a second protocol.
    Type: Grant
    Filed: December 30, 2009
    Date of Patent: March 17, 2015
    Assignee: BlackBerry Limited
    Inventors: Claude Jean-Frederic Arzelier, M. Khaledul Islam
  • Publication number: 20150072679
    Abstract: A user equipment (UE) determines whether the UE is camped on a highest priority network. The UE being configured to scan for a higher priority network even though the UE is already camped on the highest priority network as specified in a network selector data structure that identifies networks and that indicates respective priorities of the identified networks. In response to determining that the UE is camped on the highest priority network, the UE stops scanning for a higher priority network.
    Type: Application
    Filed: September 11, 2013
    Publication date: March 12, 2015
    Applicant: BLACKBERRY LIMITED
    Inventors: Jeffrey William Wirtanen, Muhammad Khaledul Islam
  • Publication number: 20150071167
    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: Application
    Filed: September 11, 2013
    Publication date: March 12, 2015
    Applicant: BlackBerry Limited
    Inventors: Muhammad Khaledul ISLAM, Jeffrey William WIRTANEN
  • Patent number: 8942087
    Abstract: One illustrative method of for use in controlling network resources in a wireless network involves assigning, from a pool of IP addresses, a temporary IP address for a mobile station in the wireless network; calculating a ratio or percentage of the number of IP addresses and the total number of IP addresses in the pool; setting a timer value for the mobile station to an initial value that depends on the ratio or percentage of IP addresses such that, as the ratio or percentage increases, the initial value decreases; causing the temporary IP address and the timer value to be sent to the mobile station, which is adapted to register the temporary IP address with a home agent for IP mobility service; and communicating a termination request which terminates the IP mobility service if no request for re-registration is received from the mobile station upon expiration of the timer value.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: January 27, 2015
    Assignee: BlackBerry Limited
    Inventors: Hao Xue, Muhammad Khaledul Islam
  • Publication number: 20150011231
    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: Application
    Filed: September 15, 2014
    Publication date: January 8, 2015
    Applicant: BLACKBERRY LIMITED
    Inventors: Ozgur EKICI, Muhammad Khaledul ISLAM
  • Patent number: 8913534
    Abstract: A method and network element for sending a transition indication to transition a user equipment to a different state or mode, the method receiving a configuration message from a network; and transmitting a transition indication from the user equipment, the transition indication only includes a cause if the configuration message contains an inhibit transition indication. Also, a method and user equipment for processing a transitioning indication from a user equipment indicating the user equipment desires a transition to a different state or mode, the method comprising: receiving the transition indication from the user equipment; if the transition indication contains a cause: releasing a signaling connection of the user equipment or transitioning the user equipment to a different state or mode; and if the transition indication does not contain the cause: releasing the signaling connection.
    Type: Grant
    Filed: June 10, 2011
    Date of Patent: December 16, 2014
    Assignee: BlackBerry Limited
    Inventors: Gordon Peter Young, Takashi Suzuki, Claude Jean-Frederic Arzelier, Muhammad Khaledul Islam, Jeffrey William Wirtanen
  • Patent number: 8897124
    Abstract: A wireless terminal adapted to function in a code division multiple access (CDMA) communications system is provided. The terminal includes a receiver adapted to receive frames having a slot structure in which there is a user identification channel and a shared channel, the shared channel having been transmitted using a plurality of Walsh codes, and containing content for either a plurality of voice users, a plurality of voice users and one high-rate data user, or only one high-rate data user. A slot of the shared channel contains content for a plurality of users which was transmitted in parallel using different Walsh code spaces for different users. The wireless terminal is adapted to decode the user identification channel to determine when a slot of the shared channel contains voice and/or high-rate data content for the wireless terminal.
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: November 25, 2014
    Assignee: Alcatel Lucent
    Inventors: Xixian Chen, Neil N. McGowan, Muhammad Khaledul Islam, Ning Guo, Hong Ren, Litong Li
  • Patent number: 8885607
    Abstract: A method and network element to control use of a transition indication message by a user equipment, the method including an inhibit transition indication in a configuration message; and sending the configuration message with the inhibit transition indication to the user equipment. Also, a method and user equipment for sending a transition indication, the method setting a timer according to an inhibit transition indication received from a network element; detecting that a data transfer is complete; and sending the transition indication upon detecting that the timer is not running.
    Type: Grant
    Filed: August 13, 2012
    Date of Patent: November 11, 2014
    Assignee: BlackBerry Limited
    Inventors: Gordon Peter Young, Takashi Suzuki, Claude Jean-Frederic Arzelier, Muhammad Khaledul Islam, Jeffrey William Wirtanen
  • Patent number: 8874113
    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, performing at least one of preventing at least one non-priority call from being handed over into the serving cell and preventing at least one non-priority call from being initiated in the serving cell.
    Type: Grant
    Filed: November 5, 2010
    Date of Patent: October 28, 2014
    Assignee: BlackBerry Limited
    Inventors: Chen-Ho Chin, Stefano M. Faccin, Muhammad Khaledul Islam, Mo-Han Fong
  • Patent number: 8862135
    Abstract: A method and apparatus to restore always on connectivity to user equipment, the method having the steps of: monitoring whether the user equipment has transitioned to a network that supports concurrent voice and data; performing, upon the monitoring step detecting the transition, a routing area update; checking whether the user equipment was in a voice call at the time of the transition, and if yes, sending a data packet to the network.
    Type: Grant
    Filed: November 9, 2011
    Date of Patent: October 14, 2014
    Assignee: BlackBerry Limited
    Inventors: Muhammad Khaledul Islam, Jeffrey Wirtanen, Jean-Philippe Cormier, Dimitrios Prodanos
  • Patent number: 8837386
    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: July 2, 2010
    Date of Patent: September 16, 2014
    Assignee: BlackBerry Limited
    Inventors: Ozgur Ekici, Muhammad Khaledul Islam
  • Publication number: 20140248850
    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: Application
    Filed: May 14, 2014
    Publication date: September 4, 2014
    Applicant: BLACKBERRY LIMITED
    Inventors: Xin Jin, Muhammad Khaledul Islam
  • Patent number: 8811935
    Abstract: A user equipment (UE) comprising a processor configured to cause the UE to transmit an emergency calls required indicator (ECRI) to a network component responsive to the UE receiving an instruction to place an emergency call; and to receive an emergency calls supported indicator (ECSI) prior to placing an emergency call, wherein a value of the ECSI indicates a type of emergency services supported by a femtocell, where the processor is further configured to cause the UE to transmit the ECRI before receiving the ECSI.
    Type: Grant
    Filed: January 12, 2010
    Date of Patent: August 19, 2014
    Assignee: BlackBerry Limited
    Inventors: Stefano M. Faccin, Young Ae Kim, Johanna L. Dwyer, Mo-Han Fong, David Philip Hole, M. Khaledul Islam, Paul Marcus Carpenter, Jeffrey William Wirtanen, Maiyuran Wijayanathan
  • Patent number: 8792451
    Abstract: A method in a mobile device is provided. The method includes storing the number of IP (Internet protocol) sessions available to the mobile device for each of a number of network areas; and when the mobile device is in a location where two of the network areas overlap, performing cell selection based on the stored number of IP sessions for each of the overlapping network areas.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: July 29, 2014
    Assignee: Blackberry Limited
    Inventors: Jeffrey William Wirtanen, Muhammad Khaledul Islam
  • Publication number: 20140206369
    Abstract: A method and apparatus for improved battery performance of user equipment in a wireless network having multiple radio resource control (RRC) states, the method comprising the steps of: monitoring, at the user equipment, application data exchange; determining when no application on the user equipment is expected to exchange data; and initiating, from the user equipment, a transition to a less battery demanding radio resource control state or mode.
    Type: Application
    Filed: March 19, 2014
    Publication date: July 24, 2014
    Applicant: BlackBerry Limited
    Inventors: Muhammad Khaledul Islam, Jeffery Wirtanen
  • Patent number: 8787334
    Abstract: Methods are provided for transitioning between SIP and MIP. Mobile devices, upon detecting a new system, automatically attempt a MIP session to avoid the default position of SIP. A history is maintained of systems visited, and for systems that did not support MIP in the past, a MIP session is not attempted, but rather SIP is initiated from the start.
    Type: Grant
    Filed: March 29, 2010
    Date of Patent: July 22, 2014
    Assignee: Blackberry Limited
    Inventors: M. Khaledul Islam, Hao Xue, Jin Kim
  • Publication number: 20140194131
    Abstract: A method and system for processing signaling release indication cause between user equipment and a wireless network, the method comprising the steps of: monitoring, at the user equipment, whether a signaling connection release indication should be sent to the wireless network; appending, at the user equipment, a cause for the signaling connection release indication to the signaling connection release indication; sending the appended signaling connection release indication to the wireless network; receiving the signaling connection release indication at the wireless network; and filtering said cause to determine whether to raise an alarm.
    Type: Application
    Filed: February 3, 2014
    Publication date: July 10, 2014
    Applicant: BlackBerry Limited
    Inventors: Muhammad Khaledul Islam, Jeffery Wirtanen
  • Patent number: 8774805
    Abstract: Systems and methods for radio access technology specific routing for multi-mode mobile devices are provided. For each of a number of radio access technologies supported by a mobile device, the mobile device is configured to use respective routing information. This has the advantage of allowing radio access technology specific processing to be performed.
    Type: Grant
    Filed: November 13, 2008
    Date of Patent: July 8, 2014
    Assignee: Blackberry Limited
    Inventors: Jean-Philippe Cormier, Trevor Plestid, M. Khaledul Islam