Patents by Inventor Guang Han

Guang Han 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).

  • Publication number: 20150172980
    Abstract: The described method provides for an efficient method for user equipment (104) to identify when it is in proximity to an assigned femtocell (108) in order to be handed over to a femtocell from a macro cell. As the user the equipment moves within a macro cell (106) that is defined by a serving base station (102), it is determined (202) that it is in the range of or in proximity to the femtocell to which it is registered or subscribed. Upon notification that it is near the femtocell, the user equipment sends (204) a message to the serving base station of the macro cell indicating the user equipment has identified its femtocell. The serving base station then sends (208) a message to femtocell to turn on the femtocell so that a handover of the user equipment from the macro cell and serving base station and the femtocell can be initiated. The serving base station sends (212) a response to the user equipment indicating that the femtocell is ready to receive the user equipment as a part of handover procedure.
    Type: Application
    Filed: February 26, 2015
    Publication date: June 18, 2015
    Inventors: Guang Han, John M. Harris
  • Patent number: 9026081
    Abstract: In a wireless communication system wherein a user equipment (UE) that accesses a cell served by an access point (sometimes known as femtocell) is granted only a limited time period during which to camp on, attach to, or connect to the cell, the communication system permits a user of the UE to anticipate an expiration of the time period and, if desired negotiate an extension of the time period. More particularly, the communication system provides for notification of the UE of the duration of this limited time period and further permits the UE to negotiate an extension of the time period when the UE desires to do so. In the event an extension is requested by the user and granted by the owner/operator, a notification will be sent to the user and the UE may reset a timer.
    Type: Grant
    Filed: June 17, 2010
    Date of Patent: May 5, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Guang Han, Bonnie Chen
  • Patent number: 8996016
    Abstract: The described method provides for an efficient method for user equipment (104) to identify when it is in proximity to an assigned femtocell (108) in order to be handed over to a femtocell from a macro cell. As the user the equipment moves within a macro cell (106) that is defined by a serving base station (102), it is determined (202) that it is in the range of or in proximity to the femtocell to which it is registered or subscribed. Upon notification that it is near the femtocell, the user equipment sends (204) a message to the serving base station of the macro cell indicating the user equipment has identified its femtocell. The serving base station then sends (208) a message to femtocell to turn on the femtocell so that a handover of the user equipment from the macro cell and serving base station and the femtocell can be initiated. The serving base station sends (212) a response to the user equipment indicating that the femtocell is ready to receive the user equipment as a part of handover procedure.
    Type: Grant
    Filed: January 4, 2010
    Date of Patent: March 31, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Guang Han, John M. Harris
  • Patent number: 8996018
    Abstract: A base station (500) can determine (201) which resource blocks a second base station (503) will utilize to transmit control signaling as corresponds to that second base station. The base station can then prevent (202) itself from transmitting control signaling (which control signaling corresponds to a plurality of wireless carrier resources as correspond to the base station) using resource blocks that will coincide with the resource blocks the second base station will utilize to transmit its control signaling. These teachings also provide for having the base station then transmit (203) a signal that comprises an indication that the control signaling as corresponds to the plurality of wireless carrier resources will be transmitted using the alternative resource blocks as compared to at least one ordinarily expected resource block.
    Type: Grant
    Filed: October 30, 2008
    Date of Patent: March 31, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Stavros Tzavidas, Guang Han
  • Patent number: 8983388
    Abstract: A first base station communicates (102) with a second base station (wherein an ongoing communication cannot be handed over from the first base station to the second base station and wherein the first and second base station each employ, at least in part, a same set of carrier resources) to prevent interference by usage of the second base station with a user of the first base station. By one approach, this activity can be based, at least in part, upon receipt (101) of a message from an end user platform indicating that a carrier resource that is presently being used by the end user platform is being interfered with by the second base station. By another approach, this activity can take place prior to any actual such interference.
    Type: Grant
    Filed: August 13, 2009
    Date of Patent: March 17, 2015
    Assignee: Google Technology Holdings LLC
    Inventors: Guang Han, Rajeev Agrawal, Anand S. Bedekar
  • Patent number: 8594672
    Abstract: Systems and techniques for managing the use of almost blank subframes in wireless communication systems. Base stations in a wireless network monitor load information affecting network nodes. Load information may be in the form of load metric information. The load information may be exchanged between system elements, and an almost blank subframe proportioning may be updated by one or more of the base stations, and information relating to the updated proportioning. The updated almost blank subframe proportioning may be used in scheduling and load metric calculation, as well as almost blank subframe patterning. Updating of almost blank subframe information and load metric information may be performed iteratively.
    Type: Grant
    Filed: December 21, 2011
    Date of Patent: November 26, 2013
    Assignee: Nokia Siemens Networks Oy
    Inventors: Rajeev Agrawal, Rangsan Leelahakriengkrai, Anand S. Bedekar, Guang Han
  • Publication number: 20130084865
    Abstract: Systems and techniques for managing the use of almost blank subframes in wireless communication systems. Base stations in a wireless network monitor load information affecting network nodes. Load information may be in the form of load metric information. The load information may be exchanged between system elements, and an almost blank subframe proportioning may be updated by one or more of the base stations, and information relating to the updated proportioning. The updated almost blank subframe proportioning may be used in scheduling and load metric calculation, as well as almost blank subframe patterning. Updating of almost blank subframe information and load metric information may be performed iteratively.
    Type: Application
    Filed: December 21, 2011
    Publication date: April 4, 2013
    Inventors: Rajeev Agrawal, Rangsan Leelahakriengkrai, Anand S. Bedekar, Guang Han
  • Publication number: 20130084864
    Abstract: Systems and techniques for handover management in wireless communication networks. An apparatus, such as a base station, receives information relating to load conditions and computes handover threshold information based on the information relating to the load conditions. The information relating to the load conditions may comprise information received from other base stations, and the base station may in turn share its own information. Information may be shared through direct communication between base stations, or may be managed by a controller. Handover thresholds may be set for user devices based on the load metric information.
    Type: Application
    Filed: December 21, 2011
    Publication date: April 4, 2013
    Inventors: Rajeev Agrawal, Rangsan Leelahakriengkrai, Anand S. Bedekar, Guang Han
  • Patent number: 8295874
    Abstract: Disclosed is a method for providing power control using idle-mode user equipment attached to a cell in a wireless communication system. First and second higher power level thresholds for signal transmissions of a cell are defined, wherein the first power level has a defined offset higher than a minimum required power level, and wherein the first and second power level thresholds define an operating power band therebetween. The user equipment measures a signal transmission power level. If the idle-mode user equipment determines that the signal transmission power level falls outside of the operating power band, then a message is sent to affect a change in signal transmission power level.
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: October 23, 2012
    Assignee: Motorola Mobility LLC
    Inventors: John M. Harris, Guang Han
  • Patent number: 8165597
    Abstract: A central controller (300) receives (201), from each of a plurality of base stations certain operating information. This operating information can comprise, for example, a self-identifier, information regarding allowed wireless distance coverage, identifiers for neighboring ones of the plurality of base stations, information regarding wireless distances to neighboring base station, or loading information. This operating information is used (202) to form adjacency information regarding the plurality of base stations. This adjacency information is then used (203) (along, for example, with the aforementioned loading information) to develop a resource allocation plan as pertains to the resources. This plan is then communicated (204) to the plurality of base stations such that the latter can utilize the plan to thereby partition use of the plurality of resources to support communication needs of the base stations while avoiding undue interference with respect to the use of such resources.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: April 24, 2012
    Assignee: Motorola Mobility, Inc.
    Inventors: Guang Han, Rajeev Agrawal, Anand S. Bedekar
  • Publication number: 20110230219
    Abstract: In a wireless communication system, a method includes assigning an initial portion of a list of resource block group for each of a plurality of cells such that the resource block groups are spread across the plurality of cells in a non-contiguous order spaced out in frequency. In addition, the method assigns a secondary portion of the list of resource block groups for each of a plurality of cells wherein the secondary portion is assigned in a reverse order and alternating from the initial portion of the list of resource block groups of each of the other plurality of cells.
    Type: Application
    Filed: March 7, 2011
    Publication date: September 22, 2011
    Applicant: MOTOROLA, INC.
    Inventors: William N. Shores, Rajeev Agrawal, Anand S. Bedekar, Guang Han, Shawn W. Hogberg, Suresh Kalyanasundaram, Vivek P. Mhatre, Daniel R. Tayloe
  • Publication number: 20100330962
    Abstract: In a wireless communication system wherein a user equipment (UE) that accesses a cell served by an access point (sometimes known as femtocell) is granted only a limited time period during which to camp on, attach to, or connect to the cell, the communication system permits a user of the UE to anticipate an expiration of the time period and, if desired negotiate an extension of the time period. More particularly, the communication system provides for notification of the UE of the duration of this limited time period and further permits the UE to negotiate an extension of the time period when the UE desires to do so. In the event an extension is requested by the user and granted by the owner/operator, a notification will be sent to the user and the UE may reset a timer.
    Type: Application
    Filed: June 17, 2010
    Publication date: December 30, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Guang Han, Bonnie Chen
  • Publication number: 20100317394
    Abstract: Disclosed is a method for providing power control using idle-mode user equipment attached to a cell in a wireless communication system. First and second higher power level thresholds for signal transmissions of a cell are defined, wherein the first power level has a defined offset higher than a minimum required power level, and wherein the first and second power level thresholds define an operating power band therebetween. The user equipment measures a signal transmission power level. If the idle-mode user equipment determines that the signal transmission power level falls outside of the operating power band, then a message is sent to affect a change in signal transmission power level.
    Type: Application
    Filed: May 4, 2010
    Publication date: December 16, 2010
    Applicant: MOTOROLA, INC.
    Inventors: John M. Harris, Guang Han
  • Publication number: 20100271962
    Abstract: A method and apparatus for estimating an available backhaul bandwidth in a femto-cell communication network includes a step (204, 304) of sending at least one defined data stream to at least one femto-cell. A next step (206, 306) includes measuring a delay of the at least one defined data stream at the at least one femto-cell. A next step (208, 308) includes estimating, from the delay of the at least one defined data stream, a backhaul bandwidth availability.
    Type: Application
    Filed: April 22, 2009
    Publication date: October 28, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Guang Han, Rajeev Agrawal, Anand S. Bedekar
  • Publication number: 20100248730
    Abstract: A central controller (300) receives (201), from each of a plurality of base stations certain operating information. This operating information can comprise, for example, a self-identifier, information regarding allowed wireless distance coverage, identifiers for neighboring ones of the plurality of base stations, information regarding wireless distances to neighboring base station, or loading information. This operating information is used (202) to form adjacency information regarding the plurality of base stations. This adjacency information is then used (203) (along, for example, with the aforementioned loading information) to develop a resource allocation plan as pertains to the resources. This plan is then communicated (204) to the plurality of base stations such that the latter can utilize the plan to thereby partition use of the plurality of resources to support communication needs of the base stations while avoiding undue interference with respect to the use of such resources.
    Type: Application
    Filed: January 25, 2010
    Publication date: September 30, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Guang Han, Rajeev Agrawal, Anand Bedekar
  • Publication number: 20100173630
    Abstract: The described method provides for an efficient method for user equipment (104) to identify when it is in proximity to an assigned femtocell (108) in order to be handed over to a femtocell from a macro cell. As the user the equipment moves within a macro cell (106) that is defined by a serving base station (102), it is determined (202) that it is in the range of or in proximity to the femtocell to which it is registered or subscribed. Upon notification that it is near the femtocell, the user equipment sends (204) a message to the serving base station of the macro cell indicating the user equipment has identified its femtocell. The serving base station then sends (208) a message to femtocell to turn on the femtocell so that a handover of the user equipment from the macro cell and serving base station and the femtocell can be initiated. The serving base station sends (212) a response to the user equipment indicating that the femtocell is ready to receive the user equipment as a part of handover procedure.
    Type: Application
    Filed: January 4, 2010
    Publication date: July 8, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Guang Han, John M. Harris
  • Publication number: 20100113040
    Abstract: A base station (500) can determine (201) which resource blocks a second base station (503) will utilize to transmit control signaling as corresponds to that second base station. The base station can then prevent (202) itself from transmitting control signaling (which control signaling corresponds to a plurality of wireless carrier resources as correspond to the base station) using resource blocks that will coincide with the resource blocks the second base station will utilize to transmit its control signaling. These teachings also provide for having the base station then transmit (203) a signal that comprises an indication that the control signaling as corresponds to the plurality of wireless carrier resources will be transmitted using the alternative resource blocks as compared to at least one ordinarily expected resource block.
    Type: Application
    Filed: October 30, 2008
    Publication date: May 6, 2010
    Applicant: MOTOROLA, INC.
    Inventors: Stavros Tzavidas, Guang Han
  • Patent number: D628554
    Type: Grant
    Filed: November 23, 2009
    Date of Patent: December 7, 2010
    Assignee: Creative Technology Ltd
    Inventors: Rudy Kurniawan Tedja, Nicholas Stephen Marchand, Zheng Guang Han
  • Patent number: D631497
    Type: Grant
    Filed: April 20, 2010
    Date of Patent: January 25, 2011
    Assignee: Creative Technology Ltd
    Inventors: Zheng Guang Han, Nicholas Stephen Marchand, Rudy Kurniawan Tedja
  • Patent number: D635606
    Type: Grant
    Filed: May 4, 2010
    Date of Patent: April 5, 2011
    Assignee: Creative Technology Ltd
    Inventors: Zheng Guang Han, Nicholas Stephen Marchand, Rudy Kurniawan Tedja