Patents by Inventor Shahid Chaudry

Shahid Chaudry 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: 8532055
    Abstract: Apparatus, and an associated method, for facilitating routing of data in a packet radio communication system. A clone list is downloaded to the mobile node and stored at a clone list depository thereat. The clone list includes a plurality of entries, each of which provides routing information needed to route data when the mobile node is positioned within coverage areas encompassed by differing networks. A determination is made whether the clone list includes appropriate routing information to route a data packet sent by the mobile node positioned in a particular area encompassed by a particular network portion. If the clone list includes an entry containing such information, the need separately to request such information is obviated.
    Type: Grant
    Filed: December 13, 2008
    Date of Patent: September 10, 2013
    Assignee: BlackBerry Limited
    Inventors: Shahid Chaudry, Grace Yeung, Ian Michael Patterson, David Anthony Bajar, Darcy Richard Phipps
  • Patent number: 8472375
    Abstract: A method and apparatus for user data traffic handling for an EVDO enabled hybrid mode mobile device, the method having the steps of: blocking a system selection at the mobile device until no EVDO traffic state exists, the blocking step includes either monitoring whether a user changes a scan mode on the mobile device; and if the user changes the scan mode, checking whether the mobile device is in an EVDO traffic state; and if yes delaying a system selection until the EVDO traffic state is ended, or monitoring whether a user is in an EVDO traffic state, and if yes, preventing a user from accessing a scan mode menu on the mobile device.
    Type: Grant
    Filed: October 20, 2008
    Date of Patent: June 25, 2013
    Assignee: Research In Motion Limited
    Inventors: Asif Hossain, Hao Xue, Shahid Chaudry, Wen Zhao
  • Patent number: 8447877
    Abstract: In accordance with the teachings described herein, systems and methods are provided for always-on wireless IP communication. An access provider network (APN) that includes an always-on packet data serving node (PDSN) may be used to communicate over a wireless communication link with a mobile station. The PDSN may include an inactivity timer and may be used to set the inactivity timer to an inactivity timer starting value and send a starting value estimate to the mobile station over the wireless communication link, wherein the starting value estimate is a function of the inactivity timer starting value. The mobile station may include an inactivity timer estimate and may be used to receive the starting value estimate and set the inactivity timer estimate to the starting value estimate. The mobile station may also be used to reset the inactivity timer estimate to the starting value estimate when the mobile station communicates with the APN.
    Type: Grant
    Filed: February 11, 2011
    Date of Patent: May 21, 2013
    Assignee: Research In Motion Limited
    Inventors: Hao Xue, William Daniel Willey, M. Khaledul Islam, Shahid Chaudry
  • Publication number: 20120184270
    Abstract: A method and apparatus for best service rescan scheduling on a mobile device operating in an EVDO hybrid mode, the method comprising the steps of: blocking a best service rescan on the mobile device if the mobile device in an EVDO traffic state, the mobile device characterized by blocking means, the blocking means enabled to block a best service rescan on the mobile device if the mobile device in an EVDO traffic state.
    Type: Application
    Filed: March 28, 2012
    Publication date: July 19, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Wen ZHAO, Asif HOSSAIN, Shahid CHAUDRY
  • Patent number: 7991397
    Abstract: Provided are systems and methods for generating a blacklist for femtocells. According to an embodiment of the application, a mobile device generates and maintains a femtocell blacklist including an identification of at least one femtocell to be avoided by the mobile device. Upon detecting a femtocell, the mobile device determines whether the femtocell is identified in the femtocell blacklist. If the femtocell is identified in the femtocell blacklist, then the mobile device avoids any attempt to use the femtocell. This might allow the mobile device to conserve battery power and reduce wireless communication resources. Since the femtocell blacklist is generated and maintained by the mobile device, the network infrastructure does not need to generate and manage the femtocell blacklist. Also, there is no need for the mobile device to download a femtocell blacklist or updates thereof from the network infrastructure.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: August 2, 2011
    Assignee: Research In Motion Limited
    Inventors: William Daniel Willey, M. Khaledul Islam, Asif Hossain, Kwong Hang Chan, Rene Purnadi, Hao Xue, Shahid Chaudry
  • Publication number: 20110134784
    Abstract: In accordance with the teachings described herein, systems and methods are provided for always-on wireless IP communication. An access provider network (APN) that includes an always-on packet data serving node (PDSN) may be used to communicate over a wireless communication link with a mobile station. The PDSN may include an inactivity timer and may be used to set the inactivity timer to an inactivity timer starting value and send a starting value estimate to the mobile station over the wireless communication link, wherein the starting value estimate is a function of the inactivity timer starting value. The mobile station may include an inactivity timer estimate and may be used to receive the starting value estimate and set the inactivity timer estimate to the starting value estimate. The mobile station may also be used to reset the inactivity timer estimate to the starting value estimate when the mobile station communicates with the APN.
    Type: Application
    Filed: February 11, 2011
    Publication date: June 9, 2011
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Hao Xue, William Daniel Willey, M. Khaledul Islam, Shahid Chaudry
  • Patent number: 7912977
    Abstract: In accordance with the teachings described herein, systems and methods are provided for always-on wireless IP communication. An access provider network (APN) that includes an always-on packet data serving node (PDSN) may be used to communicate over a wireless communication link with a mobile station. The PDSN may include an inactivity timer and may be used to set the inactivity timer to an inactivity timer starting value and send a starting value estimate to the mobile station over the wireless communication link, wherein the starting value estimate is a function of the inactivity timer starting value. The mobile station may include an inactivity timer estimate and may be used to receive the starting value estimate and set the inactivity timer estimate to the starting value estimate. The mobile station may also be used to reset the inactivity timer estimate to the starting value estimate when the mobile station communicates with the APN.
    Type: Grant
    Filed: July 11, 2008
    Date of Patent: March 22, 2011
    Assignee: Research In Motion Limited
    Inventors: Hao Xue, William Daniel Willey, M. Khaledul Islam, Shahid Chaudry
  • Patent number: 7804809
    Abstract: Method, and associated apparatus, for operating a hybrid access terminal operable in a CDMA 1x/EVDO hybrid communication session system. The hybrid access terminal is operable to communicate pursuant to an EVDO communication session and to a PPP communication session. The opening and closing of the communication sessions are independent of one another. Opening of one session does not require opening of another of the sessions. And, closing of one of the sessions does not require closing of the other of the sessions.
    Type: Grant
    Filed: January 6, 2010
    Date of Patent: September 28, 2010
    Assignee: Research In Motion Limited
    Inventors: Asif Hossain, Shailesh Kaul, Muhammad Khaledul Islam, Suresh Periyalwar, Grace Yeung, Shahid Chaudry
  • Publication number: 20100111064
    Abstract: Method, and associated apparatus, for operating a hybrid access terminal operable in a CDMA 1x/EVDO hybrid communication session system. The hybrid access terminal is operable to communicate pursuant to an EVDO communication session and to a PPP communication session. The opening and closing of the communication sessions are independent of one another. Opening of one session does not require opening of another of the sessions. And, closing of one of the sessions does not require closing of the other of the sessions.
    Type: Application
    Filed: January 6, 2010
    Publication date: May 6, 2010
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: ASIF HOSSAIN, SHAILESH KAUL, MUHAMMAD KHALEDUL ISLAM, SURESH PERIYALWAR, GRACE YEUNG, SHAHID CHAUDRY
  • Patent number: 7656852
    Abstract: Method, and associated apparatus, for operating a hybrid access terminal operable in a CDMA 1x/EVDO hybrid communication session system. The hybrid access terminal is operable to communicate pursuant to an EVDO communication session and to a PPP communication session. The opening and closing of the communication sessions are independent of one another. Opening of one session does not require opening of another of the sessions. And, closing of one of the sessions does not require closing of the other of the sessions.
    Type: Grant
    Filed: December 13, 2008
    Date of Patent: February 2, 2010
    Assignee: Research In Motion Limited
    Inventors: Asif Hossain, Shailesh Kaul, Muhammad Khaledul Islam, Suresh Periyalwar, Grace Yeung, Shahid Chaudry
  • Publication number: 20090253432
    Abstract: Provided are systems and methods for generating a blacklist for femtocells. According to an embodiment of the application, a mobile device generates and maintains a femtocell blacklist including an identification of at least one femtocell to be avoided by the mobile device. Upon detecting a femtocell, the mobile device determines whether the femtocell is identified in the femtocell blacklist. If the femtocell is identified in the femtocell blacklist, then the mobile device avoids any attempt to use the femtocell. This might allow the mobile device to conserve battery power and reduce wireless communication resources. Since the femtocell blacklist is generated and maintained by the mobile device, the network infrastructure does not need to generate and manage the femtocell blacklist. Also, there is no need for the mobile device to download a femtocell blacklist or updates thereof from the network infrastructure.
    Type: Application
    Filed: February 12, 2009
    Publication date: October 8, 2009
    Applicant: Research In Motion Limited
    Inventors: William Daniel Willey, M. Khaledul Islam, Asif Hossain, Kwong Hang Chan, Rene Purnadi, Hao Xue, Shahid Chaudry
  • Patent number: 7593727
    Abstract: A method and apparatus for best service rescan scheduling on a mobile device operating in an EVDO hybrid mode, the method comprising the steps of: blocking a best service rescan on the mobile device if the mobile device in an EVDO traffic state, the mobile device characterized by blocking means, the blocking means enabled to block a best service rescan on the mobile device if the mobile device in an EVDO traffic state.
    Type: Grant
    Filed: May 12, 2005
    Date of Patent: September 22, 2009
    Assignee: Research In Motion Limited
    Inventors: Wen Zhao, Asif Hossain, Shahid Chaudry
  • Publication number: 20090103505
    Abstract: Method, and associated apparatus, for operating a hybrid access terminal operable in a CDMA 1x/EVDO hybrid communication session system. The hybrid access terminal is operable to communicate pursuant to an EVDO communication session and to a PPP communication session. The opening and closing of the communication sessions are independent of one another. Opening of one session does not require opening of another of the sessions. And, closing of one of the sessions does not require closing of the other of the sessions.
    Type: Application
    Filed: December 13, 2008
    Publication date: April 23, 2009
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: ASIF HOSSAIN, SHAILESH KAUL, MUHAMMAD KHALEDUL ISLAM, SURESH PERIYALWAR, GRACE YEUNG, SHAHID CHAUDRY
  • Publication number: 20090098877
    Abstract: Apparatus, and an associated method, for facilitating routing of data in a packet radio communication system. A clone list is downloaded to the mobile node and stored at a clone list depository thereat. The clone list includes a plurality of entries, each of which provides routing information needed to route data when the mobile node is positioned within coverage areas encompassed by differing networks. A determination is made whether the clone list includes appropriate routing information to route a data packet sent by the mobile node positioned in a particular area encompassed by a particular network portion. If the clone list includes an entry containing such information, the need separately to request such information is obviated.
    Type: Application
    Filed: December 13, 2008
    Publication date: April 16, 2009
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: SHAHID CHAUDRY, GRACE YEUNG, IAN MICHAEL PATTERSON, DAVID ANTHONY BAJAR, DARCY RICHARD PHIPPS
  • Publication number: 20090092102
    Abstract: A method and apparatus for user data traffic handling for an EVDO enabled hybrid mode mobile device, the method having the steps of: blocking a system selection at the mobile device until no EVDO traffic state exists, the blocking step includes either monitoring whether a user changes a scan mode on the mobile device; and if the user changes the scan mode, checking whether the mobile device is in an EVDO traffic state; and if yes delaying a system selection until the EVDO traffic state is ended, or monitoring whether a user is in an EVDO traffic state, and if yes, preventing a user from accessing a scan mode menu on the mobile device.
    Type: Application
    Filed: October 20, 2008
    Publication date: April 9, 2009
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Asif HOSSAIN, Hao XUE, Shahid CHAUDRY, Wen ZHAO
  • Patent number: 7492746
    Abstract: Method, and associated apparatus, for operating a hybrid access terminal operable in a CDMA 1×/EVDO hybrid communication session system. The hybrid access terminal is operable to communicate pursuant to an EVDO communication session and to a PPP communication session. The opening and closing of the communication sessions are independent of one another. Opening of one session does not require opening of another of the sessions. And, closing of one of the sessions does not require closing of the other of the sessions.
    Type: Grant
    Filed: November 10, 2005
    Date of Patent: February 17, 2009
    Assignee: Research In Motion Limited
    Inventors: Asif Hossain, Shailesh Kaul, Muhammad Khaledul Islam, Suresh Periyalwar, Grace Yeung, Shahid Chaudry
  • Patent number: 7466984
    Abstract: Apparatus, and an associated method, for facilitating routing of data in a packet radio communication system. A clone list is downloaded to the mobile node and stored at a clone list depository thereat. The clone list includes a plurality of entries, each of which provides routing information needed to route data when the mobile node is positioned within coverage areas encompassed by differing networks. A determination is made whether the clone list includes appropriate routing information to route a data packet sent by the mobile node positioned in a particular area encompassed by a particular network portion. If the clone list includes an entry containing such information, the need separately to request such information is obviated.
    Type: Grant
    Filed: February 19, 2004
    Date of Patent: December 16, 2008
    Assignee: Research In Motion Limited
    Inventors: Shahid Chaudry, Grace Yeung, Ian Michael Patterson, David Anthony Bajar, Darcy Richard Phipps
  • Publication number: 20080293407
    Abstract: Wireless devices and methods are provided for performing mobile discovery of an active data subscription. This involves a wireless device attempting to register using an APN that is one of a CDMA-centric APN and a GSM-centric APN. If that attempt fails, then the wireless device attempts to register using an APN that is the other of the CDMA-centric APN and the GSM-centric APN. In some cases the first APN attempted is always the CDMA-centric APN; in some cases the first APN attempted is a previously successfully used APN. For wireless devices with a data roaming enable/disable mechanism, the method can be executed while data roaming is disabled such that when data roaming is enabled, the proper APN to use will have been previously identified.
    Type: Application
    Filed: May 24, 2007
    Publication date: November 27, 2008
    Inventors: Jean-Philippe Cormier, James R.W. Lepp, Shahid Chaudry, Asif Hossain, Trevor Plestid, Padakandla Krishna Rao, Richard Sims, M. Khaledul Islam, Balarajan Balasubramaniam
  • Patent number: 7454208
    Abstract: A method and apparatus for user data traffic handling for an EVDO enabled hybrid mode mobile device, the method having the steps of: blocking a system selection at the mobile device until no EVDO traffic state exists, the blocking step includes either monitoring whether a user changes a scan mode on the mobile device; and if the user changes the scan mode, checking whether the mobile device is in an EVDO traffic state; and if yes delaying a system selection until the EVDO traffic state is ended, or monitoring whether a user is in an EVDO traffic state, and if yes, preventing a user from accessing a scan mode menu on the mobile device.
    Type: Grant
    Filed: May 9, 2005
    Date of Patent: November 18, 2008
    Assignee: Research In Motion Limited
    Inventors: Asif Hossain, Hao Xue, Shahid Chaudry, Wen Zhao
  • Publication number: 20080267103
    Abstract: In accordance with the teachings described herein, systems and methods are provided for always-on wireless IP communication. An access provider network (APN) that includes an always-on packet data serving node (PDSN) may be used to communicate over a wireless communication link with a mobile station. The PDSN may include an inactivity timer and may be used to set the inactivity timer to an inactivity timer starting value and send a starting value estimate to the mobile station over the wireless communication link, wherein the starting value estimate is a function of the inactivity timer starting value. The mobile station may include an inactivity timer estimate and may be used to receive the starting value estimate and set the inactivity timer estimate to the starting value estimate. The mobile station may also be used to reset the inactivity timer estimate to the starting value estimate when the mobile station communicates with the APN.
    Type: Application
    Filed: July 11, 2008
    Publication date: October 30, 2008
    Inventors: Hao Xue, William Daniel Willey, M. Khaledul Islam, Shahid Chaudry