Patents by Inventor Yufei Wu

Yufei Wu 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: 20210231520
    Abstract: A sealing integrity evaluation device for high-temperature and high-pressure casing-cement ring-formation and a method thereof are provided. the device includes: a high-temperature autoclave, a temperature and pressure control system, and a casing-cement-formation combination; wherein the autoclave realizes alternating temperature and pressure during the experiment; the control system monitors, controls and records the temperature and pressure data; the combination simulates a full size or a compact size casing-cement-formation of a well.
    Type: Application
    Filed: April 13, 2021
    Publication date: July 29, 2021
    Inventors: Zhi Zhang, Duo Hou, Huali Zhang, Yufei Li, You Wu, Lin Zhang, Wei Luo, Chuanlei Wang, Xiankang Zhong, Pengfei Sang
  • Patent number: 11062449
    Abstract: A method and system for extracting vasculature. The method may include obtaining an image including a part representing a vessel, and obtaining a first image by extracting bone tissue in the image. The method may also include obtaining a second image by performing a region growing operation on the image. The method may further include generating a subtraction image based on the first image and the second image. The subtraction image may include at least a portion of the part representing the vessel in the image. The method may also include obtaining at least one vessel seed group based on a first condition and the subtraction image, and determining at least one vessel threshold based on at least one boundary distance field of the subtraction image. The method may further include obtaining a target vessel image by performing, based on the vessel seed group and the at least one vessel threshold, a region growing operation on the image.
    Type: Grant
    Filed: December 30, 2018
    Date of Patent: July 13, 2021
    Assignee: SHANGHAI UNITED IMAGING HEALTHCARE CO., LTD.
    Inventors: Yufei Mao, Jieyan Ma, Ke Wu
  • Publication number: 20210176715
    Abstract: A user equipment detects that an aggregate of calculated uplink transmit power of the UE exceeds a threshold. In response to the detecting, a power of at least one of a plurality of frequency-division multiplexing (FDM)-based uplink transmissions of the UE over corresponding wireless connections with respective wireless access network nodes is adjusted.
    Type: Application
    Filed: February 19, 2021
    Publication date: June 10, 2021
    Inventors: Yufei Wu Blankenship, Shiwei Gao, Hua Xu
  • Publication number: 20210144784
    Abstract: A method at a first device for enabling a device-to-device wireless link, the method detecting whether a presence signal of a second device is received over a first time period, the presence signal of the second device having a time-slot boundary; and if the presence signal of the second device is not detected, initiating a time-slot boundary by the first device including: transmitting a first presence signal of the first device in a selected time-slot; and checking for an acknowledgment to the first presence signal.
    Type: Application
    Filed: January 11, 2021
    Publication date: May 13, 2021
    Applicant: BlackBerry Limited
    Inventors: Nam NGUYEN, Yufei Wu BLANKENSHIP, Sagar DHAKAL
  • Publication number: 20210089730
    Abstract: A management system monitors a set of objects of a user by wirelessly communicating with one or more location components associated with the objects, and each object of the set has a respective location component. The monitoring includes ascertaining by the management system, based at least in part on data obtained via wireless communication with the location component(s), a spatial centroid of the set and a spatial separation of an object in the set from the spatial centroid, and correlating the ascertained spatial centroid to a context classification of multiple context classifications. The management system further determines whether a difference between the ascertained spatial separation and the average spatial separation of the location component(s) for the correlated context classification exceeds an acceptable spatial separation tolerance. Based on the difference exceeding the acceptable tolerance, the management system provides an electronic alert to the user.
    Type: Application
    Filed: September 25, 2019
    Publication date: March 25, 2021
    Inventors: Akil Khamisi SUTTON, Edward C. McCAIN, Yufei WU, Kennedy CHERUIYOT, Ali Y. DUALE
  • Patent number: 10956690
    Abstract: A management system monitors a set of objects of a user by wirelessly communicating with one or more location components associated with the objects, and each object of the set has a respective location component. The monitoring includes ascertaining by the management system, based at least in part on data obtained via wireless communication with the location component(s), a spatial centroid of the set and a spatial separation of an object in the set from the spatial centroid, and correlating the ascertained spatial centroid to a context classification of multiple context classifications. The management system further determines whether a difference between the ascertained spatial separation and the average spatial separation of the location component(s) for the correlated context classification exceeds an acceptable spatial separation tolerance. Based on the difference exceeding the acceptable tolerance, the management system provides an electronic alert to the user.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: March 23, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Akil Khamisi Sutton, Edward C. McCain, Yufei Wu, Kennedy Cheruiyot, Ali Y. Duale
  • Patent number: 10932205
    Abstract: A user equipment detects that an aggregate of calculated uplink transmit power of the UE exceeds a threshold. In response to the detecting, a power of at least one of a plurality of frequency-division multiplexing (FDM)-based uplink transmissions of the UE over corresponding wireless connections with respective wireless access network nodes is adjusted.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: February 23, 2021
    Assignee: BLACKBERRY LIMITED
    Inventors: Yufei Wu Blankenship, Shiwei Gao, Hua Xu
  • Patent number: 10932309
    Abstract: A method at a first device for enabling a device-to-device wireless link, the method detecting whether a presence signal of a second device is received over a first time period, the presence signal of the second device having a time-slot boundary; and if the presence signal of the second device is not detected, initiating a time-slot boundary by the first device including: transmitting a first presence signal of the first device in a selected time-slot; and checking for an acknowledgment to the first presence signal.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: February 23, 2021
    Assignee: BlackBerry Limited
    Inventors: Nam Nguyen, Yufei Wu Blankenship, Sagar Dhakal
  • Publication number: 20210051639
    Abstract: A method at a first wireless network element, the method receiving, from a second wireless network element, a plurality of packet data units (PDUs) for a user equipment; transmitting the PDUs to the user equipment (UE); compiling a PDU delivery status report in response to the transmitting of the PDUs; and sending the compiled PDU delivery status report to the second wireless network element.
    Type: Application
    Filed: November 3, 2020
    Publication date: February 18, 2021
    Applicant: BlackBerry Limited
    Inventors: Shiwei GAO, Yufei Wu BLANKENSHIP, Zhijun CAI
  • Publication number: 20200380088
    Abstract: A method for predicting local layout effect in a circuit design pattern includes obtaining a plurality of circuit design patterns, generating layout images from the circuit design patterns, extracting feature vectors from the layout images by processing the layout images in a computer vision machine learning algorithm, comparing the feature vector extracted from a selected layout image to clusters of feature vectors extracted from the layout images, wherein the clusters of feature vectors include an in-range cluster and an outlier cluster, and labelling a circuit design pattern corresponding to the selected layout image, for which threshold voltage has not been experimentally measured, as being an in-range circuit design pattern or an outlier circuit design pattern, in response to the selected layout image respectively correlating with the in-range cluster or with the outlier cluster.
    Type: Application
    Filed: May 30, 2019
    Publication date: December 3, 2020
    Inventors: Jing Sha, Dongbing Shao, Yufei Wu, Zheng Xu
  • Patent number: 10856278
    Abstract: A method at a first wireless network element, the method receiving, from a second wireless network element, a plurality of packet data units (PDUs) for a user equipment; transmitting the PDUs to the user equipment (UE); compiling a PDU delivery status report in response to the transmitting of the PDUs; and sending the compiled PDU delivery status report to the second wireless network element.
    Type: Grant
    Filed: May 8, 2017
    Date of Patent: December 1, 2020
    Assignee: Blackberry Limited
    Inventors: Shiwei Gao, Yufei Wu Blankenship, Zhijun Cai
  • Patent number: 10831976
    Abstract: A method for predicting local layout effect in a circuit design pattern includes obtaining a plurality of circuit design patterns, generating layout images from the circuit design patterns, extracting feature vectors from the layout images by processing the layout images in a computer vision machine learning algorithm, comparing the feature vector extracted from a selected layout image to clusters of feature vectors extracted from the layout images, wherein the clusters of feature vectors include an in-range cluster and an outlier cluster, and labelling a circuit design pattern corresponding to the selected layout image, for which threshold voltage has not been experimentally measured, as being an in-range circuit design pattern or an outlier circuit design pattern, in response to the selected layout image respectively correlating with the in-range cluster or with the outlier cluster.
    Type: Grant
    Filed: May 30, 2019
    Date of Patent: November 10, 2020
    Assignee: International Business Machines Corporation
    Inventors: Jing Sha, Dongbing Shao, Yufei Wu, Zheng Xu
  • Publication number: 20200221450
    Abstract: Uplink control channel resource allocation for an enhanced downlink control channel is disclosed. A first example method disclosed herein includes receiving, at a user equipment (UE), a downlink control channel carrying a physical uplink control channel (PUCCH) resource indicator, mapping the PUCCH resource indicator to a first offset, mapping a position of the downlink control channel to a second offset, and mapping a linear combination of the first and second offsets to an index identifying a first PUCCH resource. A second example method disclosed herein includes, in response to receiving, at a UE, an indication of a dynamic resource offset in an enhanced physical downlink control channel (ePDCCH) transmitted in a first ePDCCH set, determining a position of the ePDCCH and a subframe offset, and processing the indication of the dynamic resource offset, the position and the subframe offset to determine an allocated uplink control channel resource for the UE.
    Type: Application
    Filed: March 16, 2020
    Publication date: July 9, 2020
    Applicant: BlackBerry Limited
    Inventors: Robert Mark HARRISON, Shiwei Gao, Yufei Wu BLANKENSHIP
  • Patent number: 10595307
    Abstract: Uplink control channel resource allocation for an enhanced downlink control channel is disclosed. A first example method disclosed herein includes receiving, at a user equipment (UE), a downlink control channel carrying a physical uplink control channel (PUCCH) resource indicator, mapping the PUCCH resource indicator to a first offset, mapping a position of the downlink control channel to a second offset, and mapping a linear combination of the first and second offsets to an index identifying a first PUCCH resource. A second example method disclosed herein includes, in response to receiving, at a UE, an indication of a dynamic resource offset in an enhanced physical downlink control channel (ePDCCH) transmitted in a first ePDCCH set, determining a position of the ePDCCH and a subframe offset, and processing the indication of the dynamic resource offset, the position and the subframe offset to determine an allocated uplink control channel resource for the UE.
    Type: Grant
    Filed: October 5, 2018
    Date of Patent: March 17, 2020
    Assignee: BlackBerry Limited
    Inventors: Robert Mark Harrison, Shiwei Gao, Yufei Wu Blankenship
  • Patent number: 10477441
    Abstract: In some examples, a source wireless access network node generates, for a user equipment (UE), a plurality of security configurations, wherein each security configuration of the plurality of security configurations is associated with a different respective candidate target wireless network node in a set of candidate target wireless access network nodes. The source wireless access network node sends each security configuration of the plurality of security configurations to the respective candidate target wireless network node, and sends security information of the plurality of security configurations to the UE.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: November 12, 2019
    Assignee: BlackBerry Limited
    Inventors: Yufei Wu Blankenship, Shiwei Gao
  • Patent number: 10405218
    Abstract: In some examples, a wireless access network node communicates with user equipments (UEs) in a plurality of sets of subframes, the plurality of sets of subframes comprising a first set of subframes and a second set of subframes. The wireless access network node performs dynamic power control of a transmission of the wireless access network node in the first set of subframes, and does not perform dynamic power control of a transmission of the wireless access network node in the second set of subframes.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: September 3, 2019
    Assignee: BlackBerry Limited
    Inventors: Yajun Zhu, Hua Xu, Zhijun Cai, Shiwei Gao, Yufei Wu Blankenship, Vahid Pourahmadi
  • Patent number: 10383110
    Abstract: A method for communication in a wireless telecommunication system is provided. The method includes assigning a first cell of a first network node to a first timing advance group (TAG) of a user equipment (UE) and assigning a second cell of a second network node to a second TAG of the UE, wherein the second network node has a separate MAC (medium access control) scheduler from the first network node, and wherein the UE is able to transmit data on both the first and the second cell.
    Type: Grant
    Filed: September 26, 2017
    Date of Patent: August 13, 2019
    Assignee: BlackBerry Limited
    Inventors: Yufei Wu Blankenship, Shiwei Gao, Hua Xu
  • Patent number: 10321359
    Abstract: A first wireless access network node receives feedback information from a second wireless access network node that performs data offload for the first wireless access node, the feedback information identifying a user equipment (UE) and including information relating to a buffer condition of a data buffer in the second wireless access network node. In response to the feedback information, performing, by the first wireless access network node, control of the data offload that includes controlling an offload of at least one radio bearer of the UE identified by the feedback information.
    Type: Grant
    Filed: February 28, 2017
    Date of Patent: June 11, 2019
    Assignee: BlackBerry Limited
    Inventors: Shiwei Gao, Yufei Wu Blankenship, Rene Waraputra Purnadi, Zhijun Cai, Yi Song, Changhoi Koo
  • Patent number: 10321511
    Abstract: Systems, methods, and apparatuses for radio resource control (RRC) signaling in wireless communication networks with data offload are provided. The radio configuration messages from a small cell to a dual connection UE may be sent by an overlay macro E-UTRAN node-B (eNB). The small cell may send the RRC messages to the macro-eNB first via a backhaul link, and the macro-eNB then transmits the messages to the UE. In some implementations, the radio configuration messages from a small cell to a dual connection UE may be sent directly from the small cell. In some other implementations, some of the RRC messages may be sent selectively to/from either the macro-cell or the small cell, or to/from both the macro-cell and the small cell. The type of RRC messages sent over the small cell and/or the macro-cell may be preconfigured or predetermined.
    Type: Grant
    Filed: April 30, 2018
    Date of Patent: June 11, 2019
    Assignee: BlackBerry Limited
    Inventors: Shiwei Gao, Yufei Wu Blankenship, Zhijun Cai
  • Publication number: 20190132894
    Abstract: A method at a first device for enabling a device-to-device wireless link, the method detecting whether a presence signal of a second device is received over a first time period, the presence signal of the second device having a time-slot boundary; and if the presence signal of the second device is not detected, initiating a time-slot boundary by the first device including: transmitting a first presence signal of the first device in a selected time-slot; and checking for an acknowledgment to the first presence signal.
    Type: Application
    Filed: December 13, 2018
    Publication date: May 2, 2019
    Applicant: BlackBerry Limited
    Inventors: Nam NGUYEN, Yufei Wu BLANKENSHIP, Sagar DHAKAL