Patents by Inventor Pengfei Xia

Pengfei Xia 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: 12170916
    Abstract: A method for measuring beams includes determining a measurement period duration in accordance with periods of one or more periodic beam failure detection (BFD) reference signals (RSs) of a BFD RS set, wherein the BFD RSs of the one or more BFD RSs of the BFD RS set have a quasi-co-located (QCL) relationship with demodulation RSs (DMRSs) of PDCCH receptions monitored by a user equipment (UE), monitoring a subset of the one or more BFD RSs having the QCL relationship with the DMRSs of PDCCH receptions monitored by the UE that occur during a measurement period, and determining that measures of all BFD RSs in the subset of the one or more BFD RSs do not meet a specified threshold, and based thereon, reporting a beam failure (BF) instance.
    Type: Grant
    Filed: November 17, 2023
    Date of Patent: December 17, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Young Hoon Kwon, Pengfei Xia
  • Patent number: 12143180
    Abstract: An access point (AP) in a high efficiency (HE) wireless local area network (WLAN) may transmit a message specifying to a group of stations a guard interval from one of two different guard intervals. The AP may receive responses from the group of stations with the specified one of the two different guard intervals for multi-user uplink HE WLAN communication.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: November 12, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Yuan Sheng Jin, Fengjun Xi, Pengfei Xia, Nirav B. Shah, Hanqing Lou, Robert L. Olesen, Oghenekome Oteri
  • Patent number: 12121859
    Abstract: The present application provides a modular membrane isolation carbon desorption device, a carbon capture system, a method, and an application thereof. The device comprises an electrolyzer in which a plurality of anion exchange membranes are arranged, dividing the electrolyzer into multiple electrolysis units. Each electrolysis unit is equipped with electrodes, and the polarities of the electrodes in adjacent units are opposite. An electrolysis unit containing a positive electrode function as an anode electrolysis unit, while one with a negative electrode serves as a cathode electrolysis unit. This application effectively reduces heat loss during the carbon desorption process and enables dual-sided dissolution of the positive electrode and dual-sided deposition of the negative electrode, thereby enhancing electrolysis efficiency during the carbon desorption process.
    Type: Grant
    Filed: July 11, 2024
    Date of Patent: October 22, 2024
    Assignee: Central South University
    Inventors: Changhong Wang, Xinbing Xia, Pengfei Zhao, Yibo Li, Hong Liu, Shuai Li, Kangkang Li, Shenghai Yang, Yongming Chen, Chaobo Tang, Jianguang Yang
  • Patent number: 12127180
    Abstract: A method for operating a user equipment includes receiving a first frame on a first channel associated with a first beam identified during a beam failure recovery procedure, and determining that an assumed quasi-co-located relationship exists between the first channel and the first beam, and based thereon, decoding the first frame in accordance with a first reference signal on the first channel and using a first spatial domain receive filter that was used to decode the first beam.
    Type: Grant
    Filed: July 20, 2023
    Date of Patent: October 22, 2024
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Young Hoon Kwon, Pengfei Xia, Bin Liu
  • Patent number: 12114302
    Abstract: A method and apparatus may be used to support coordinated and cooperative sectorized transmissions. Power control and clear channel assessment for sectorized transmissions may be used, along with sectorized beacon and associated procedures. Transmissions in a network may be protected by a first access point (AP) sending an omni-directional transmission and a beamformed or sectorized transmission to a station (STA), an overlapping basic service set (OBSS) confirming a spatially orthogonal (SO) condition based on the omni-directional transmission, and a second AP monitoring the omni-directional transmission and confirming the SO condition. The STA may be configured to receive a request-to-send (RTS) frame indicating data is available for transmission, and transmit a cooperative sectorized (CS) clear-to-send (CTS) frame indicating an ability for multiple AP reception.
    Type: Grant
    Filed: June 12, 2023
    Date of Patent: October 8, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B Shah, Monisha Ghosh, Robert Olesen
  • Publication number: 20240243764
    Abstract: A wireless transmit/receive unit (WTRU) may receive a constellation symbol that includes indications that each are associated with a respective WTRU of a plurality of WTRUs. The WTRU may determine that a first weight associated with a first indication of the indications is different than a second weight associated with a second indication of the indications. The indications may comprise indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).
    Type: Application
    Filed: January 17, 2024
    Publication date: July 18, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Yuan Sheng Jin, Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Robert L. Olesen
  • Publication number: 20240214039
    Abstract: A method performed by a STA may comprise transmitting an HE LTF of a data unit. The HE LTF may have a number of symbols based on a number of space-time streams utilized for the data unit. The HE LTF may be transmitted on a subset of subcarriers of a 20 MHz channel, a 40 MHZ channel or an 80 MHz channel.
    Type: Application
    Filed: March 5, 2024
    Publication date: June 27, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Oghenekome Oteri, Pengfei Xia, Robert Olesen
  • Patent number: 12022464
    Abstract: Embodiments of this disclosure provide techniques for communicating in a wireless communications system. In particular, in an embodiment a base station receives a capability message from a user equipment (UE) indicating downlink scheduling delay. The base station transmits a downlink control frame to the UE in response to determining that transmitting a frame to the UE satisfies a scheduling delay condition. The downlink control frame indicates a scheduling delay of the frame equal to or greater than the downlink scheduling delay. The base station then transmits the frame to the UE in accordance with the downlink control frame.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: June 25, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Young Hoon Kwon, Pengfei Xia
  • Patent number: 12004116
    Abstract: A method for receiving device position determination includes receiving beamformed position reference signals (BF-PRSs) on a plurality of communications beams from at least two transmitting devices in accordance with a BF-PRS configuration, making at least one observed time difference of arrival (OTDOA) measurement in accordance with the BF-PRSs on the plurality of communications beams, and transmitting OTDOA feedback including the at least one OTDOA measurement.
    Type: Grant
    Filed: October 19, 2022
    Date of Patent: June 4, 2024
    Assignee: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Richard Stirling-Gallacher, Nathan Edward Tenny, Bin Liu, Pengfei Xia, Aimin Justin Sang, Jian Luo
  • Publication number: 20240171432
    Abstract: Mechanisms may be used for aggregating acknowledgement (ACK), block ACK (BA) and/or short packets transmissions for multi-user (MU) wireless communication systems. Aggregation mechanisms may be used for uplink (UL) and/or downlink (DL) orthogonal frequency division multiple access (OFDMA), and/or UL/DL multiple-user multiple input multiple output (MU-MIMO) transmissions, for example. Multi-user short packets may be aggregated and/or simultaneously transmitted for DL, UL, or peer-to-peer (P2P) transmissions.
    Type: Application
    Filed: January 30, 2024
    Publication date: May 23, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Hanqing Lou, Oghenekome Oteri, Nirav B. Shah, Robert L. Olesen, Yuan Sheng Jin, Pengfei Xia, Frank La Sita, Guodong Zhang
  • Publication number: 20240155389
    Abstract: A method for measuring beams includes determining a measurement period duration in accordance with periods of one or more periodic beam failure detection (BFD) reference signals (RSs) of a BFD RS set, wherein the BFD RSs of the one or more BFD RSs of the BFD RS set have a quasi-co-located (QCL) relationship with demodulation RSs (DMRSs) of PDCCH receptions monitored by a user equipment (UE), monitoring a subset of the one or more BFD RSs having the QCL relationship with the DMRSs of PDCCH receptions monitored by the UE that occur during a measurement period, and determining that measures of all BFD RSs in the subset of the one or more BFD RSs do not meet a specified threshold, and based thereon, reporting a beam failure (BF) instance.
    Type: Application
    Filed: November 17, 2023
    Publication date: May 9, 2024
    Inventors: Young Hoon Kwon, Pengfei Xia
  • Publication number: 20240121714
    Abstract: Embodiments of this disclosure provide techniques for signaling in power save mode. In particular, a UE may identify an association between a set of time durations for paging a downlink control indicator (DCI) transmission and a wake up signal (WUS) in a set of WUSs. Paging the DCI is transmitted in a beam sweeping manner and each beam used in each time duration in the set of time durations corresponds to a respective beam used for a WUS transmission in the set of WUSs. The UE monitors a radio link quality of WUSs in the set of WUSs and, based thereon, selects a first WUS in the set of WUSs. The UE identifies a first time duration for DCI page monitoring, the first time duration corresponding to the first WUS. The UE monitors the DCI page during the first time duration.
    Type: Application
    Filed: December 20, 2023
    Publication date: April 11, 2024
    Inventors: Young Hoon Kwon, Pengfei Xia
  • Patent number: 11949471
    Abstract: A method performed by a STA may comprise transmitting an HE LTF of a data unit. The HE LTF may have a number of symbols based on a number of space-time streams utilized for the data unit. The HE LTF may be transmitted on a subset of subcarriers of a 20 MHz channel, a 40 MHz channel or an 80 MHz channel.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: April 2, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Hanqing Lou, Oghenekome Oteri, Pengfei Xia, Robert Olesen
  • Patent number: 11949440
    Abstract: A wireless transmit/receive unit (WTRU) may receive a constellation symbol that includes indications that each are associated with a respective WTRU of a plurality of WTRUs. The WTRU may determine that a first weight associated with a first indication of the indications is different than a second weight associated with a second indication of the indications. The indications may comprise indications of bits modulated at a multi-user constellation bit division multiple access modulator (MU-CBDMAM).
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: April 2, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Yuan Sheng Jin, Pengfei Xia, Oghenekome Oteri, Hanqing Lou, Nirav B. Shah, Robert L. Olesen
  • Publication number: 20240089866
    Abstract: Methods and apparatuses are described herein for adapting clear channel assessment (CCA) thresholds with or without Transmit Power Control (TPC) are disclosed. An IEEE 802.11 station (STA) may dynamically calculate a STA specific transmit power control (TPC) value and a STA specific clear channel assessment (CCA) value based on a target TPC parameter and a target CCA parameter. The target TPC parameter and the target CCA parameter may be received from an IEEE 802.11 cluster head configured to control TPC and CCA for a plurality of STAs associated with the BSS. The target TPC parameter and the target CCA parameter also may be related. The STA may then determine whether a carrier sense multiple access (CSMA) wireless medium of a wireless local area network (WLAN) basic service set (BSS) is occupied or idle based on the STA specific CCA value.
    Type: Application
    Filed: April 27, 2023
    Publication date: March 14, 2024
    Applicant: InterDigital Patent Holdings, Inc.
    Inventors: Oghenekome Oteri, Pengfei Xia, Xiaofei Wang, Hanqing Lou, Monisha Ghosh, Robert Olesen, Nirav B Shah, Frank LaSita
  • Patent number: 11923918
    Abstract: A computer-implemented method for operating an access node includes receiving from a user equipment (UE), information on a maximum number of multiple input multiple output (MIMO) layers supported by the UE for an operation bandwidth within a system bandwidth operated by the access node, scheduling for the UE, a bandwidth in accordance with the maximum number of MIMO layers supported by the UE, sending to the UE, allocation information related to the bandwidth, and communicating with the UE, a data frame on the bandwidth.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: March 5, 2024
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Young Hoon Kwon, Pengfei Xia
  • Patent number: 11909489
    Abstract: A computer-implemented method for operating a user equipment (UE) includes measuring beamformed reference signals, selecting one or more beams in accordance with the measured beamformed reference signals, and determining, by the UE, that an uplink transmit power of the UE on a subset of the one or more beams is limited by emission criteria, and based thereon, transmitting, by the UE, a beam report indicating the one or more beams and an uplink transmit power limitation.
    Type: Grant
    Filed: April 29, 2019
    Date of Patent: February 20, 2024
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Bin Liu, Pengfei Xia, Young Hoon Kwon
  • Patent number: 11888663
    Abstract: Mechanisms may be used for aggregating acknowledgement (ACK), block ACK (BA) and/or short packets transmissions for multi-user (MU) wireless communication systems. Aggregation mechanisms may be used for uplink (UL) and/or downlink (DL) orthogonal frequency division multiple access (OFDMA), and/or UL/DL multiple-user multiple input multiple output (MU-MIMO) transmissions, for example. Multi-user short packets may be aggregated and/or simultaneously transmitted for DL, UL, or peer-to-peer (P2P) transmissions.
    Type: Grant
    Filed: August 2, 2022
    Date of Patent: January 30, 2024
    Assignee: InterDigital Patent Holdings, Inc.
    Inventors: Fengjun Xi, Hanging Lou, Oghenekome Oteri, Nirav B. Shah, Robert L. Olesen, Yuan Sheng Jin, Pengfei Xia, Frank La Sita, Guodong Zhang
  • Patent number: 11876588
    Abstract: Embodiments of this disclosure provide techniques for determining a device's beam correspondence status. As used herein, a device is considered to have “beam correspondence” when the device's TX and RX antennas satisfy a calibration criteria. In one example, a device's TX and RX antennas satisfy the calibration criteria when a difference between quality parameters corresponding to reference signals transmitted and received using corresponding TX and RX beams is less than a threshold. In another example, a device's TX and RX antennas satisfy the calibration criteria when a list of indices ranking the device's TX beams matches a list of indices ranking the device's RX beams. The lists of indices may be derived by transmitting and receiving references signals according to the devices RX and TX beams, and then generating list of indices based on quality parameters of the respective RX and TX beams.
    Type: Grant
    Filed: May 16, 2022
    Date of Patent: January 16, 2024
    Assignee: Futurewei Technologies, Inc.
    Inventors: Pengfei Xia, Bin Liu
  • Patent number: D1045092
    Type: Grant
    Filed: August 16, 2022
    Date of Patent: October 1, 2024
    Assignee: GE PRECISION HEALTHCARE LLC
    Inventors: Gang Hong, Lei Xia, Pengfei Du, Shao Bo Gu