Patents by Inventor Yufei Wu Blankenship

Yufei Wu Blankenship 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: 11910331
    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: January 26, 2023
    Date of Patent: February 20, 2024
    Assignee: Malikie Innovations Limited
    Inventors: Yufei Wu Blankenship, Shiwei Gao, Hua Xu
  • Publication number: 20230345494
    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: May 19, 2023
    Publication date: October 26, 2023
    Applicant: BlackBerry Limited
    Inventors: Robert Mark HARRISON, Shiwei GAO, Yufei Wu BLANKENSHIP
  • Patent number: 11706769
    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 6, 2021
    Date of Patent: July 18, 2023
    Assignee: BlackBerry Limited
    Inventors: Robert Mark Harrison, Shiwei Gao, Yufei Wu Blankenship
  • Publication number: 20230171707
    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: January 26, 2023
    Publication date: June 1, 2023
    Inventors: Yufei Wu Blankenship, Shiwei Gao, Hua Xu
  • Publication number: 20230144392
    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 4, 2023
    Publication date: May 11, 2023
    Applicant: BlackBerry Limited
    Inventors: Nam NGUYEN, Yufei Wu BLANKENSHIP, Sagar DHAKAL
  • Patent number: 11570721
    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: February 19, 2021
    Date of Patent: January 31, 2023
    Assignee: BlackBerry Limited
    Inventors: Yufei Wu Blankenship, Shiwei Gao, Hua Xu
  • Patent number: 11558866
    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: November 3, 2020
    Date of Patent: January 17, 2023
    Inventors: Shiwei Gao, Yufei Wu Blankenship, Zhijun Cai
  • Patent number: 11558913
    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: January 11, 2021
    Date of Patent: January 17, 2023
    Assignee: BlackBerry Limited
    Inventors: Nam Nguyen, Yufei Wu Blankenship, Sagar Dhakal
  • Publication number: 20220030587
    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: October 6, 2021
    Publication date: January 27, 2022
    Applicant: BlackBerry Limited
    Inventors: Robert Mark HARRISON, Shiwei GAO, Yufei Wu BLANKENSHIP
  • Patent number: 11153860
    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: March 16, 2020
    Date of Patent: October 19, 2021
    Assignee: BlackBerry Limited
    Inventors: Robert Mark Harrison, Shiwei Gao, Yufei Wu Blankenship
  • 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
  • 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
  • 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
  • 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
  • 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
  • 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