Patents by Inventor Guoqiang Lu

Guoqiang Lu 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: 20170339607
    Abstract: Systems and methods for Secondary Cell (sCell) selection for wireless devices operating according to a carrier aggregation scheme in a cellular communications network are disclosed. In one embodiment, a network node obtains a list of potential sCells for a wireless device. The network node blindly selects an sCell for the wireless device from the list of potential sCells. The network node then configures the wireless device with the selected sCell. Blindly selecting the sCell for the wireless device makes it possible to avoid the use of measurement gaps and reduce throughput loss, according to some embodiments.
    Type: Application
    Filed: August 4, 2017
    Publication date: November 23, 2017
    Inventors: Guoqiang Lu, Lisa Boström, Richard Liu, Jamie Beuerman, Damitha Ranaweera, Edward Mah, Karl D. Mann, Eric W. Parsons, Iris Bujold, Qingchao Liu
  • Patent number: 9756532
    Abstract: Systems and methods for Secondary Cell (sCell) selection for wireless devices operating according to a carrier aggregation scheme in a cellular communications network are disclosed. In one embodiment, a network node obtains a list of potential sCells for a wireless device. The network node blindly selects an sCell for the wireless device from the list of potential sCells. The network node then configures the wireless device with the selected sCell. Blindly selecting the sCell for the wireless device makes it possible to avoid the use of measurement gaps and reduce throughput loss, according to some embodiments.
    Type: Grant
    Filed: April 11, 2014
    Date of Patent: September 5, 2017
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Guoqiang Lu, Karl D. Mann, Lisa Boström, Eric W. Parsons, Richard Liu, Iris Bujold, Jamie Beuerman, Qingchao Liu, Damitha Ranaweera, Edward Mah
  • Patent number: 9713189
    Abstract: Systems and methods for subframe-based link adaptation for a radio signal in a cellular communications network are disclosed. In one embodiment, a base station obtains a hybrid automatic repeat request acknowledgement for data transmitted between the base station and a mobile terminal in a radio signal of the base station. The base station then updates a parameter (e.g., SINR offset) used to control a Modulation and Coding Scheme (MCS) for transmission of data between the base station and the mobile terminal in the radio signal for one or more subframes in a frame structure of the radio signal based on the hybrid automatic repeat request acknowledgement. The one or more subframes are a subset of all of the subframes in the frame structure of the radio signal.
    Type: Grant
    Filed: November 7, 2012
    Date of Patent: July 18, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (Publ)
    Inventors: Guoqiang Lu, Ping Yu, Fredrik Huss, Edward Mah
  • Patent number: 9609612
    Abstract: A method and apparatus for frequency offset estimation exploits the differences in reference symbol timing for different channels to resolve ambiguities in the frequency offset estimation. Based on the initial frequency offset estimates, a hypothesis table is constructed providing hypothesized frequency offsets for each channel for a plurality of possible offset regions. An error metric for each offset region is calculated based on the difference of the hypothesized frequency offsets. The set of hypothesized frequency offsets that minimize the error metric is selected as the final frequency offset estimates.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: March 28, 2017
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Guoqiang Lu, Oskar Mauritz, Fredrik Huss, Henrik Back
  • Patent number: 9540942
    Abstract: A shaft sealing system and method are disclosed for a high or intermediate pressure turbine section having a rotating member including a shaft and a stationary member surrounding the rotating member and defining a steam flow path. The shaft sealing system comprises at least one seal disposed about each of a first end and a second end of the shaft; and a connection line for conducting steam from the first turbine section to a downstream portion of the turbine. The downstream portion of the turbine is one of a low pressure section and a condenser, and has a lower pressure than both of the first turbine section and ambient pressure conditions.
    Type: Grant
    Filed: April 13, 2012
    Date of Patent: January 10, 2017
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Daniel Robert Coffey, Guoqiang Lu, John Richard Powers, Steven Paul Scarlata, Christopher David Suttles
  • Publication number: 20160277172
    Abstract: In one embodiment, a method of operating a radio access node is provided. The method comprises determining whether support from a secondary cell is required for a wireless device to communicate with the radio access node, and, in response to determining that support from the secondary cell is required, calculating a modified channel condition outer-loop value for the secondary cell; and using the modified channel condition outer-loop value in an initial activation decision step for the secondary cell, The initial activation decision step may comprise activating the secondary cell in response to determining that the sum of a device reported channel condition value and the modified channel condition outer-loop value is above an activation threshold. Corresponding devices, computer programs and radio access nodes adapted to carry out the methods provided are also disclosed.
    Type: Application
    Filed: March 16, 2015
    Publication date: September 22, 2016
    Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Ping YU, Peter HAZY, Xixian CHEN, James Jianfeng WENG, Ying SHAO, Patrick LIE CHIN CHEONG, Guoqiang LU, Hong YU
  • Patent number: 9379842
    Abstract: A method and base station for adjusting outer-loop adjustment values used for link adaptation in a wireless communication network is provided. A modulation of a user equipment is determined and a success or failure of a Transport Block (TB) based on a TB feedback message is determined. Based on the TB feedback, one of an acknowledgement counter and a non-acknowledgement counter is incremented corresponding to the determined modulation. An upward step size for the determined modulation is updated based on the respective acknowledgement counter and the non-acknowledgement counter to affect link adaption.
    Type: Grant
    Filed: October 30, 2013
    Date of Patent: June 28, 2016
    Assignee: Telefonaktiebolaget LM Ericsson (publ)
    Inventors: Xixian Chen, Hong Ren, Edward Mah, Shiguang Guo, Ping Yu, Guoqiang Lu
  • Patent number: 9255486
    Abstract: A brush seal for use between a rotating component and a stationary component in a turbomachine is disclosed. The brush seal according to embodiments of this invention includes a set of bristles having a fixed end and a free end, wherein the fixed end is attached to the rotating component with a mechanical clamping element and the free end extends towards the stationary component, and wherein the set of bristles are angled axially at an axial angle with respect to the rotating component. In one embodiment, the fixed end of the set of bristles are wrapped at least partially around a core element and the clamping element partially surrounds the core element and the fixed end of the set of bristles, wherein the clamping element secures the fixed end of the set of bristles within a circumferential groove in the rotating component.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: February 9, 2016
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Guoqiang Lu, Mehmet Demiroglu, Binayak Roy, Deepak Trivedi, Xiaoqing Zheng
  • Patent number: 9246651
    Abstract: A method and base station for outerloop adjustment for link adaptation of a physical downlink control channel, PDCCH, in a communication network to determine a control channel element, CCE, aggregation level of a downlink assignment downlink control information, DCI, and a CCE aggregation level of an uplink grant DCI is provided. A downlink data packet feedback corresponding to the downlink assignment is received. A status of the downlink data packet feedback is determined. An uplink data packet corresponding to the uplink grant is received and a status thereof is determined. An outerloop downlink adjustment and outerloop uplink adjustment are updated based on at least one of the status of the downlink data packet feedback corresponding to the downlink assignment and status of the uplink data packet corresponding to the uplink grant. An outerloop uplink adjustment is determined as a sum of the outerloop downlink adjustment and an offset adjustment.
    Type: Grant
    Filed: December 13, 2013
    Date of Patent: January 26, 2016
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Shiguang Guo, Guoqiang Lu, Xixian Chen, Ping Yu, Hong Ren, Ahmed Nouah
  • Publication number: 20150230193
    Abstract: A method and apparatus for frequency offset estimation exploits the differences in reference symbol timing for different channels to resolve ambiguities in the frequency offset estimation. Based on the initial frequency offset estimates, a hypothesis table is constructed providing hypothesized frequency offsets for each channel for a plurality of possible offset regions. An error metric for each offset region is calculated based on the difference of the hypothesized frequency offsets. The set of hypothesized frequency offsets that minimize the error metric is selected as the final frequency offset estimates.
    Type: Application
    Filed: April 20, 2015
    Publication date: August 13, 2015
    Inventors: Guoqiang Lu, Oskar Mauritz, Fredrik Huss, Henrik Back
  • Publication number: 20150223125
    Abstract: Systems and methods for Secondary Cell (sCell) selection for wireless devices operating according to a carrier aggregation scheme in a cellular communications network are disclosed. In one embodiment, a network node in the cellular communications network obtains geographic signatures for a number of candidate sCells. The geographic signatures include a geographic signature for each candidate sCell that approximates a coverage area of the candidate sCell. The network node obtains position information for a wireless device and then selects one or more sCells for the wireless device from the candidate sCells based on the geographic signatures for the candidate sCells and the position information for the wireless device. The network node then configures the selected sCell(s) for use by the wireless device according to a carrier aggregation scheme. Using this process, sCell selection is performed, in some examples, without measurement gaps and without disabling an s-Measure parameter.
    Type: Application
    Filed: February 3, 2014
    Publication date: August 6, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Guoqiang Lu, Karl D. Mann, Lisa Boström, Eric W. Parsons, Richard Liu, Iris Bujold, Jamie Beuerman, Qinqchao Liu, Damitha Ranaweera, Edward Mah
  • Publication number: 20150172022
    Abstract: A method and base station for outerloop adjustment for link adaptation of a physical downlink control channel, PDCCH, in a communication network to determine a control channel element, CCE, aggregation level of a downlink assignment downlink control information, DCI, and a CCE aggregation level of an uplink grant DCI is provided. A downlink data packet feedback corresponding to the downlink assignment is received. A status of the downlink data packet feedback is determined. An uplink data packet corresponding to the uplink grant is received and a status thereof is determined. An outerloop downlink adjustment and outerloop uplink adjustment are updated based on at least one of the status of the downlink data packet feedback corresponding to the downlink assignment and status of the uplink data packet corresponding to the uplink grant. An outerloop uplink adjustment is determined as a sum of the outerloop downlink adjustment and an offset adjustment.
    Type: Application
    Filed: December 13, 2013
    Publication date: June 18, 2015
    Inventors: Shiguang GUO, Guoqiang LU, Xixian CHEN, Ping YU, Hong REN, Ahmed NOUAH
  • Publication number: 20150117321
    Abstract: A method and base station for adjusting outer-loop adjustment values used for link adaptation in a wireless communication network is provided. A modulation of a user equipment is determined and a success or failure of a Transport Block (TB) based on a TB feedback message is determined. Based on the TB feedback, one of an acknowledgement counter and a non-acknowledgement counter is incremented corresponding to the determined modulation. An upward step size for the determined modulation is updated based on the respective acknowledgement counter and the non-acknowledgement counter to affect link adaption.
    Type: Application
    Filed: October 30, 2013
    Publication date: April 30, 2015
    Inventors: Xixian CHEN, Hong REN, Edward MAH, Shiguang GUO, Ping YU, Guoqiang LU
  • Patent number: 9014314
    Abstract: A method and apparatus for frequency offset estimation exploits the differences in reference symbol timing for different channels to resolve ambiguities in the frequency offset estimation. Based on the initial frequency offset estimates, a hypothesis table is constructed providing hypothesized frequency offsets for each channel for a plurality of possible offset regions. An error metric for each offset region is calculated based on the difference of the hypothesized frequency offsets. The set of hypothesized frequency offsets that minimize the error metric is selected as the final frequency offset estimates.
    Type: Grant
    Filed: November 8, 2013
    Date of Patent: April 21, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Guoqiang Lu, Oskar Mauritz, Fredrik Huss, Henrik Back
  • Patent number: 8991432
    Abstract: A touch switch shower includes a shower body and a switch control device. The shower body is disposed with a root waterway, several diversion waterways and an outlet cover unit, each diversion waterway is disposed with an electromagnetic valve to control the on-off thereof. The front side of the outlet cover unit is divided into several touch areas with the same number of electromagnetic valves. The switch control device is disposed at least a processing unit, several touch modules with same number with the electromagnetic valves and a power device connected to the processing unit, the touch layer of the touch module is separately disposed in the corresponding touch area of the outlet cover unit, the processing unit is connected to the touch module in signal way, the processing unit is connected to the electromagnetic valve in signal way. The touch layer is separately disposed in the touch area.
    Type: Grant
    Filed: September 14, 2011
    Date of Patent: March 31, 2015
    Assignees: Xiamen Solex High-Tech Industries Co., Ltd.
    Inventors: Huasong Zhou, Guoqiang Lu, Xiaozhao Sun, Xianguo Zou
  • Publication number: 20150087315
    Abstract: Systems and methods for Secondary Cell (sCell) selection for wireless devices operating according to a carrier aggregation scheme in a cellular communications network are disclosed. In one embodiment, a network node obtains a list of potential sCells for a wireless device. The network node blindly selects an sCell for the wireless device from the list of potential sCells. The network node then configures the wireless device with the selected sCell. Blindly selecting the sCell for the wireless device makes it possible to avoid the use of measurement gaps and reduce throughput loss, according to some embodiments.
    Type: Application
    Filed: April 11, 2014
    Publication date: March 26, 2015
    Applicant: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Guoqiang Lu, Karl D. Mann, Lisa Boström, Eric W. Parsons, Richard Liu, Iris Bujold, Jamie Beuerman, Qinqchao Liu, Damitha Ranaweera, Edward Mah
  • Publication number: 20150040567
    Abstract: A turbine assembly is disclosed herein. The turbine assembly may include a rotor with at least one bucket extending radially therefrom. The turbine assembly also may include a stator assembly positioned adjacent to the at least one bucket. Moreover, the turbine assembly may include a seal assembly. The seal assembly may include a first flange extending in a substantially axial direction from the at least one bucket. The seal assembly also may include a second flange extending from the stator assembly in the substantially axial direction opposite the first flange. The second flange may include at least one protuberance projecting towards the first flange.
    Type: Application
    Filed: August 8, 2013
    Publication date: February 12, 2015
    Applicant: General Electric Company
    Inventors: Guoqiang Lu, Xiaoqing Zheng, Jong Youn Pak
  • Publication number: 20140225326
    Abstract: The present application provides for a brush seal system for use about a rotor of a rotary machine. The brush seal system may include a number of brush seal segments, with each of the brush seal segments having a number of bristles, and one or more of the brush seal segments including an elliptical profile so as to vary a clearance between the brush seal segments and the rotor.
    Type: Application
    Filed: April 15, 2014
    Publication date: August 14, 2014
    Applicant: General Electric Company
    Inventors: Xiaoqing Zheng, Mehmet Demiroglu, Michael Dennis Mack, Guoqiang Lu
  • Patent number: 8789833
    Abstract: According to one aspect of the invention, a turbine assembly includes a first stationary component, a second stationary component positioned radially outside the first stationary component, a first key feature on the first stationary component configured to mate to a second key feature on the second stationary component and a seal assembly positioned between the first and second key features to reduce fluid flow between the first and second key features. The seal assembly includes a V-shape member and a second member adjacent to the V-shape member, the second member and V-shape member having different rates of thermal expansion. The seal assembly also includes a latch feature coupled to the V-shape member configured to expand the seal assembly from a compressed state to an expanded sealing state when the seal assembly is subject to an elevated temperature.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: July 29, 2014
    Assignee: General Electric Company
    Inventors: Xiaoqing Zheng, Mehmet Demiroglu, Guoqiang Lu, Michael Dennis Mack, Binayak Roy
  • Patent number: 8785070
    Abstract: A cathode for use in a direct oxidation fuel cell (DOFC) comprises a gas diffusion medium (GDM) including a backing layer and a microporous layer comprising a fluoropolymer and an electrically conductive material, wherein loading of the fluoropolymer in the microporous layer is in the range from about 10 to about 60 wt. %. In use, a concentrated solution of a liquid fuel is supplied to an anode and an oxidant to the cathode of the fuel cell, and the fuel cell may be operated at a low oxidant stoichiometry ?c not greater than about 2.5.
    Type: Grant
    Filed: March 11, 2010
    Date of Patent: July 22, 2014
    Assignee: Panasonic Corporation
    Inventors: Guoqiang Lu, Chao-Yang Wang, Takashi Akiyama