Patents by Inventor Hao Xue

Hao Xue 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: 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
  • Patent number: 8364199
    Abstract: Methods are provided for a multi-mode mobile station to perform multi-mode system selection using a multi-mode system selection algorithm as a function of multi-mode overlay information. The multi-mode overlay information includes a plurality of associations, each association being between a respective set of systems that serve at least a common geographical area, at least some of the associations being between systems using differing radio access technology. Methods are also provided for a system to prepare multi-mode overlay information that includes a plurality of associations and send the multi-mode overlay information to the mobile station.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: January 29, 2013
    Assignee: Research In Motion Limited
    Inventors: Hao Xue, M. Khaledul Islam, William Daniel Willey
  • Patent number: 8260312
    Abstract: A method and apparatus for tracking location requests. The apparatus includes a storage device; a display and a processor configured to receive a location request and write location request data to a storage device.
    Type: Grant
    Filed: February 19, 2009
    Date of Patent: September 4, 2012
    Assignee: Research In Motion Limited
    Inventors: Hao Xue, M. Khaledul Islam
  • Publication number: 20120108235
    Abstract: A method and system of providing a mobile data device in a wireless system with information about preferred networks to connect to, the mobile device having a preferred roaming list with a list of networks, the method comprising the steps of: adding to the preferred roaming list information about whether each network in the list of networks supports third generation data capabilities; and determining preferred networks based on information within the preferred roaming list including a geographic area and whether the network supports third generation data capabilities, whereby, within the geographic area, the mobile device prefers networks which support third generation data capabilities over networks which do not support said third generation data capabilities. Other information that may be added to the preferred roaming list includes whether the network supports data roaming, Mobile-IP services or always-on features.
    Type: Application
    Filed: January 11, 2012
    Publication date: May 3, 2012
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Hao Xue, M. Khaledul Islam, William Daniel Willey
  • Patent number: 8121637
    Abstract: A system and method for establishing and maintaining an “always-on” data connection to a wireless network through the use of a back off timer and a service check timer is disclosed. The back off timer is initialized to a determined value when a connection is not established. When the timer expires, a connection attempt is made. As further connection attempts are made, the back off timer is set to ever-increasing values. When the data connection is established, the service check timer is initialized. The data connection status is determined at the expiry of the service check timer. When, at the expiry of the service check timer, the data connection is determined to be lost, the connection method is employed.
    Type: Grant
    Filed: October 15, 2010
    Date of Patent: February 21, 2012
    Assignee: Research In Motion Limited
    Inventors: Wen Zhao, Shahid R. Chaudry, T. L. Trevor Plestid, Hao Xue, Grace T. Y. Yeung, Clifford W. Yanoshewski
  • Patent number: 8116765
    Abstract: A method and system of providing a mobile data device in a wireless system with information about preferred networks to connect to, the mobile data device having a preferred roaming list with a list of networks, the method comprising the steps of: adding to the preferred roaming list information about whether each network in the list of networks supports third generation data capabilities; and determining preferred networks based on information within the preferred roaming list including a geographic area and whether the network supports third generation data capabilities, whereby, within the geographic area, the mobile data device prefers networks which support third generation data capabilities over networks which do not support said third generation data capabilities. Other information that may be added to the preferred roaming list includes whether the network supports data roaming, Mobile IP services or always-on features.
    Type: Grant
    Filed: February 11, 2009
    Date of Patent: February 14, 2012
    Assignee: Research In Motion Limited
    Inventors: Hao Xue, M. Khaledul Islam, William Daniel Willey
  • 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
  • Publication number: 20110058476
    Abstract: Techniques for controlling wireless network operations associated with a flow control process of a wireless network involving a data session established between a mobile station and a service node. The network processor examines quality of service (QoS) data associated with the data session. The network processor causes the flow control process to be bypassed for the mobile station based on the QoS data indicating that the data session is associated with a predetermined traffic class (e.g. background traffic class). This serves to prohibit the flow control process from stopping the flow of data packets in the data session without terminating the data session based on detection of an out-of-coverage condition. Otherwise, the network processor allows the flow control process to be performed for the mobile station based on the QoS data indicating that the data session is not associated with the predetermined traffic class.
    Type: Application
    Filed: November 10, 2010
    Publication date: March 10, 2011
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: William Daniel Willey, Muhammad Khaledul Islam, Shahid Rasul Chaudry, Hao Xue
  • Publication number: 20110034199
    Abstract: A system and method for establishing and maintaining an “always-on” data connection to a wireless network through the use of a back off timer and a service check timer is disclosed. The back off timer is initialized to a determined value when a connection is not established. When the timer expires, a connection attempt is made. As further connection attempts are made, the back off timer is set to ever-increasing values. When the data connection is established, the service check timer is initialized. The data connection status is determined at the expiry of the service check timer. When, at the expiry of the service check timer, the data connection is determined to be lost, the connection method is employed.
    Type: Application
    Filed: October 15, 2010
    Publication date: February 10, 2011
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Wen ZHAO, Shahid R. CHAUDRY, T. L. Trevor PLESTID, Hao XUE, Grace T.Y. YEUNG, Clifford W. YANOSHEWSKI
  • Patent number: 7881195
    Abstract: Methods and apparatus for controlling wireless network operations associated with a flow control process which terminates data communications to a mobile station based on an out-of-coverage condition between the mobile station and a wireless communication network. In the wireless communication network, an indication is identified which indicates whether a mobile station utilizes an always-on connection for a data service. Based on the indication indicating that the mobile station utilizes the always-on connection, the flow control process is bypassed. Otherwise, the flow control process is performed. The always-on connection may be utilized for an e-mail application for the mobile station and involve a Point-to-Point Protocol (PPP) session.
    Type: Grant
    Filed: November 26, 2008
    Date of Patent: February 1, 2011
    Assignee: Research In Motion Limited
    Inventors: William Daniel Willey, Muhammad Khaledul Islam, Shahid Rasul Chaudry, Hao Xue
  • Patent number: 7856213
    Abstract: The present invention provides methods, systems, and devices for selective override of do-not-disturb in a wireless communications network, in which a user is provided with the option to query and modify the ignoring of do-not-disturb (DnD) for certain reasons. In some embodiments, DnD is ignored when an incoming call is an urgent call. In other embodiments DnD is ignored when an incoming call is an emergency call. In some embodiments a call processing server manages and performs selective override of do-not-disturb in an OMA compatible system. In yet other embodiments, a mobile device is adapted to send to a dispatch network a request to query or set an ignoreDnD flag, along with associated ignoreDnD reasons.
    Type: Grant
    Filed: February 27, 2004
    Date of Patent: December 21, 2010
    Assignee: Research In Motion Limited
    Inventors: Hao Xue, Muhammad Kilaledul Islam
  • Publication number: 20100265860
    Abstract: A method and apparatus for saving network resources in a CDMA2000 network, the method comprising the steps of receiving a data packet for a wireless data device at a base station controller in the CDMA2000 network; determining a frame transport capability of a forward common channel; checking whether the data packet falls within the frame transport capability; and if the data packet falls within the frame transport capability, encapsulating the data packet as a data burst message; and sending the data burst message over the forward common channel, wherein the sending step over the forward common channel precludes a dedicated data traffic channel being established for the data packet thereby saving network resources on the CDMA2000 network.
    Type: Application
    Filed: July 2, 2010
    Publication date: October 21, 2010
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Hao Xue, M. Khaledul Islam, Kenneth J. Liang
  • Publication number: 20100265908
    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: Application
    Filed: June 28, 2010
    Publication date: October 21, 2010
    Applicant: Research In Motion Limited
    Inventors: Hao Xue, Muhammad Khaledul Islam
  • Patent number: 7818025
    Abstract: A system and method for establishing and maintaining an “always-on” data connection to a wireless network through the use of a back off timer and a service check timer is disclosed. The back off timer is initialized to a determined value when a connection is not established. When the timer expires, a connection attempt is made. As further connection attempts are made, the back off timer is set to ever-increasing values. When the data connection is established, the service check timer is initialized. The data connection status is determined at the expiry of the service check timer. When, at the expiry of the service check timer, the data connection is determined to be lost, the connection method is employed.
    Type: Grant
    Filed: June 16, 2003
    Date of Patent: October 19, 2010
    Assignee: Research In Motion Limited
    Inventors: Wen Zhao, Shahid R. Chaudry, T. L. Trevor Plestid, Hao Xue, Grace T. Y. Yeung, Clifford W. Yanoshewski
  • Patent number: 7796557
    Abstract: In one illustrative example, when a mobile station operative for communications in a wireless communication network is engaged in a call, an in-traffic channel message is transmitted from a base station to the mobile station. The message includes information indicative of whether the wireless network supports a predetermined concurrent service or feature. The predetermined concurrent service or feature may be a mobile-requested Quality of Service (QoS) parameter usage feature or a mobile-initiated position location determination feature. The in-traffic channel message may be an in-traffic system parameter message, a general handoff direction message, or a universal handoff direction message, as examples. Preferably, the wireless network is a cdma2000-type network. Since the mobile station is made aware of such information, more efficient operation may be realized.
    Type: Grant
    Filed: January 5, 2005
    Date of Patent: September 14, 2010
    Assignee: Research In Motion Limited
    Inventors: Hao Xue, William Daniel Willey, Muhammad Khaledul Islam
  • Publication number: 20100210281
    Abstract: A method and apparatus for tracking location requests. The apparatus includes a storage device; a display and a processor configured to receive a location request and write location request data to a storage device.
    Type: Application
    Filed: February 19, 2009
    Publication date: August 19, 2010
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: Hao XUE, M. Khaledul ISLAM
  • Publication number: 20100177705
    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: Application
    Filed: March 29, 2010
    Publication date: July 15, 2010
    Applicant: RESEARCH IN MOTION LIMITED
    Inventors: M. KHALEDUL ISLAM, HAO XUE, JIN KIM