Patents by Inventor Yuan Zhu

Yuan Zhu 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: 11284357
    Abstract: A UE may estimate the power headroom value when using shortened Transmission Time Intervals (sTTI). In one implementation, the power headroom value may be calculated based on an estimation of the UE transmission power over two or seven OFDM symbols. Alternatively or additionally, the power headroom value may be calculated based on an estimation of the UE transmission power over the period of an sTTI. Alternatively or additionally, the power headroom value may be calculated based on an average of the UE transmission power over multiple sTTI periods in a subframe. Alternatively or additionally, the power headroom value may be calculated based on a maximum or minimum of the UE transmission power measured over multiple sTTI periods in a subframe. Alternatively or additionally, the power headroom value may be calculated based on UE transmission power measured in the first or the last sTTI period in a subframe.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: March 22, 2022
    Assignee: Apple Inc.
    Inventors: Jie Cui, Hong He, Yang Tang, Yuan Zhu, Shuang Tian
  • Patent number: 11265837
    Abstract: User equipment performs autonomous time adjustment that includes selecting a Timing Error Limit (i.e. Te_NR) and Maximum Autonomous Time Adjustment Step (i.e. Tq_NR) based on bandwidth (BW) and subcarrier spacing (SCS). In one embodiment, given a certain downlink BW, if the SCS=x(kHz) and the Te_NR of this SCS is N, then the Te_NR of SCS=x/2(kHz) is 2*N. Given a certain downlink BW, if the SCS=x(kHz) and the Te_NR of this SCS is N, then the Te_NR of SCS=2*x(kHz) is N/2. For example, given BW=10 MHz, if the Te_NR of SCS=30kHz is n*Ts_NR (TS_NR is the basic timing unit for NR system), then the Te_NR of SCS=60 kHz is N/2*Ts_NR, and the Te_NR of SCS=15 kHz is 2*N*Ts_NR.
    Type: Grant
    Filed: March 14, 2018
    Date of Patent: March 1, 2022
    Assignee: APPLE INC.
    Inventors: Jie Cui, Yang Tang, Rui Huang, Yuan Zhu
  • Publication number: 20220053565
    Abstract: This disclosure describes methods, apparatus, and systems related to non-contiguous channel bonding. A device may determine a wireless communication channel having one or more subchannels in accordance with one or more communication standards. The device may determine instructions to perform one or more clear channel assessments (CCAs) on at least one of the one or more subchannels. The device may cause to send the instructions to one or more first devices. The device may identify a frame received from at least one of the one or more first devices, wherein the frame is received on at least one available subchannel of the one or more subchannels.
    Type: Application
    Filed: October 28, 2021
    Publication date: February 17, 2022
    Inventors: Qinghua LI, Xiaogang CHEN, Po-Kai HUANG, Yuan ZHU, Yushu ZHANG
  • Patent number: 11245480
    Abstract: Devices and methods of simultaneous data reception and measurement are generally described. A UE transmits to an eNB antenna capacity and receives a Beamformed Reference Signal (BRS) configuration in response. Beamformed signals from the eNB include a BRS subframe in accordance with the BRS configuration. The BRS subframe has a BRS whose structure depends on the UE antenna capacity. If the UE has a single antenna panels, neither an EPDCCH nor a PDSCH for the UE is in the BRS frame. If the UE has a single antenna panels and multiple ports or multiple antenna panels, the BRS may contain an EPDCCH or PDSCH for the UE as different ports or antenna panels may be assigned different functionality. The UE measures BRS Received Power (BRS-RP) of the BRS, transmits a BRS report based on the BRS-RP and selects an optimal beam based on BRS-RPs from BRSs of the beams.
    Type: Grant
    Filed: February 11, 2020
    Date of Patent: February 8, 2022
    Assignee: Apple Inc.
    Inventors: Yushu Zhang, Yuan Zhu, Gang Xiong, Huaning Niu, Wenting Chang
  • Patent number: 11240692
    Abstract: An invention to perform a method of cell measurement in a wireless network, wherein the wireless network comprises a plurality of frequency layers, the invention configured to: determine a Measurement Gap Length, MGL, for each one of the plurality of frequency layers operational in the wireless network; determine a gap bitmap to indicate a measurement gap availability in a time sequence for each one of the plurality of frequency layers of the wireless network; and transmit gap assistance information for each one of the plurality of frequency layers of the wireless network to a User Equipment, wherein the gap assistance information comprises at least the determined Measurement Gap Length and the determined gap bitmap.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: February 1, 2022
    Assignee: Apple Inc.
    Inventors: Jie Cui, Yang Tang, Rui Huang, Yuan Zhu, Shuang Tian
  • Publication number: 20220006498
    Abstract: Apparatus, systems, and methods to implement receive beamforming in communication systems are described. In one example, apparatus of an evolved Node B (eNB) comprising processing circuitry to receive, from a user equipment (UE), a beamforming reference signal received power (BRS-RP) measurement and in response to the BRS-RP measurement, configure a downlink (DL) transmit (Tx) beamforming and a receiving (Rx) beamforming process on the UE. Other examples are also disclosed and claimed.
    Type: Application
    Filed: September 20, 2021
    Publication date: January 6, 2022
    Applicant: Apple Inc.
    Inventors: Yushu Zhang, Yuan Zhu, Gang Xiong, Ralf Bendlin, Jong-Kae Fwu
  • Publication number: 20210410094
    Abstract: Methods and architectures to determine whether carrier aggregation (CA) component carrier signals transmitted or received by a user equipment (UE) device with a primary serving cell (PCell) and one or more secondary serving cells (SCell) exceed a maximum transmission timing difference compare a relative difference of signals derived from subframe boundaries, a subslot transmission time interval (sTTI) boundary or a combination thereof, with a maximum receive timing threshold value. In the uplink, timing advance groups (TAGs) for the PCell and/SCells may be compared by the UE to a maximum transmit timing threshold value. If the maximum thresholds are exceeded, the SCell may be dropped or changed to avoid UE from exceeding its power maximums.
    Type: Application
    Filed: February 6, 2018
    Publication date: December 30, 2021
    Inventors: Jie Cui, Hong He, Yang Tang, Yuan Zhu, Shuang Tian
  • Patent number: 11201657
    Abstract: Disclosed herein are apparatuses, systems, and methods for reference signal design for initial acquisition, by receiving a first primary synchronization signal (PSS) and a first secondary synchronization signal (SSS) from a first transmit (Tx) beam, in first contiguous orthogonal frequency division multiplexing (OFDM) symbols of a downlink subframe. A UE can receive at least a second PSS and a second SSS from a second Tx beam in contiguous OFDM symbols of the downlink subframe. A UE can then detect beamforming reference signals (BRSs) corresponding to the first Tx beam and the second Tx beam, based on identification of physical cell ID information and timing information processed from the first PSS, the second PSS, the first SSS, and the second SSS. The UE can select the first Tx beam or the second Tx beam that was received with the highest power, based on the BRSs. Other embodiments are described.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: December 14, 2021
    Assignee: Apple Inc.
    Inventors: Gang Xiong, Huaning Niu, Yushu Zhang, Jong-Kae Fwu, Yuan Zhu, Ralf Matthias Bendlin
  • Publication number: 20210384956
    Abstract: This disclosure describes systems, methods, and devices related to antenna configuration parameters. A device may determine one or more antennas having one or more phases. The device may determine a first delay associated with a first antenna of the one or more antennas. The device may determine a second delay associated with a second antenna of the one or more antennas. The device may cause to send a frame to a first station device using the first antenna, wherein the frame comprises a first indication of the delay associated with the first antenna and a second indication of the delay associated with the second antenna.
    Type: Application
    Filed: August 18, 2021
    Publication date: December 9, 2021
    Applicant: Intel Corporation
    Inventors: Xintian Lin, Yuan Zhu, Jonathan Segev, Qinghua Li, Xiaogang Chen, Feng Jiang
  • Patent number: 11184927
    Abstract: This disclosure describes methods, apparatus, and systems related to non-contiguous channel bonding. A device may determine a wireless communication channel having one or more subchannels in accordance with one or more communication standards. The device may determine instructions to perform one or more clear channel assessments (CCAs) on at least one of the one or more subchannels. The device may cause to send the instructions to one or more first devices. The device may identify a frame received from at least one of the one or more first devices, wherein the frame is received on at least one available subchannel of the one or more subchannels.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: November 23, 2021
    Assignee: Intel Corporation
    Inventors: Qinghua Li, Xiaogang Chen, Po-Kai Huang, Yuan Zhu, Yushu Zhang
  • Patent number: 11171746
    Abstract: Apparatus that sends uplink control information (UCI) from user equipment (UE) to a network node, generates elements of the UCI including at least one of hybrid automatic repeat request-acknowledgement (HARQ-ACK) feedback for one or more uplink (UL) resources, a scheduling request (SR), a channel state information (CSI) report and a beam related information report in response to a trigger set by the network node. The apparatus encodes the UCI elements for transmission via a physical uplink control channel (PUCCH) or a physical uplink shared channel (PUSCH) of the one or more UL resources. The one or more UL resources may be UL slots or UL portions of downlink-uplink (DL-UL) slots received from a network node.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: November 9, 2021
    Assignee: Apple Inc.
    Inventors: Gang Xiong, Hong He, Yushu Zhang, Wenting Chang, Yuan Zhu
  • Patent number: 11172389
    Abstract: Apparatus, systems, and methods for measurement gap configuration in communication systems are described.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: November 9, 2021
    Assignee: INTEL CORPORATION
    Inventors: Candy Yiu, Wenting Chang, Yuan Zhu, Yujian Zhang, Yushu Zhang, Yang Tang, Rui Huang
  • Patent number: 11165487
    Abstract: Technologies described herein provide mechanisms and formats to accomplish the beam switching. In one implementation, least one frame structure for both uplink (UL) and downlink (DL) beam switching is provided. The UL beam switching and refinement may rely on 5G Physical Random Access Channel (xPRACH) or 5G Sounding Reference Signal (xSRS). The DL beam switching and refinement may be done based on a beam refinement reference signal (BRRS). In some embodiments, to accomplish the both UL and DL beam switching and refinement in one subframe, the BRRS and xPRACH or xSRS may be located in one subframe.
    Type: Grant
    Filed: July 1, 2016
    Date of Patent: November 2, 2021
    Assignee: Apple Inc.
    Inventors: Yushu Zhang, Wenting Chang, Yuan Zhu, Gang Xiong, Bishwarup Mondal
  • Publication number: 20210337561
    Abstract: Technology for a user equipment (UE) using a self-contained scheduling resource to communicate with an eNodeB within a wireless communication network is disclosed. The UE can select, at the UE, a selected eNodeB transmission (Tx) beam and a selected UE reception (Rx) beam based on a highest power beamforming reference signal (BRS) received power (BRS-RP). The UE can signal a transceiver of the UE to transmit to the eNodeB a scheduling request (SR), using the selected Rx beam, on a scheduling request (SR) resource in a self-contained subframe according to a time and frequency location of the selected eNodeB Tx beam. The UE can process an advanced physical downlink control channel (xPDCCH), received from the eNodeB, for an uplink (UL) grant using the selected UE RX beam.
    Type: Application
    Filed: July 6, 2021
    Publication date: October 28, 2021
    Inventors: Gang Xiong, Wenting Chang, Huaning Niu, Yushu Zhang, Yuan Zhu
  • Patent number: 11159213
    Abstract: Apparatus, systems, and methods to implement receive beamforming in communication systems are described. In one example, apparatus of an evolved Node B (eNB) comprising processing circuitry to receive, from a user equipment (UE), a beamforming reference signal received power (BRS-RP) measurement and in response to the BRS-RP measurement, configure a downlink (DL) transmit (Tx) beamforming and a receiving (Rx) beamforming process on the UE. Other examples are also disclosed and claimed.
    Type: Grant
    Filed: December 26, 2015
    Date of Patent: October 26, 2021
    Assignee: Apple Inc.
    Inventors: Yushu Zhang, Yuan Zhu, Gang Xiong, Ralf Bendlin, Jong-Kae Fwu
  • Patent number: 11159995
    Abstract: In various aspects, devices and methods for performing a handover in a MIMO system are described herein. According to at least one aspect, a wireless communication device is described to include one or more receivers that measures beams of a neighbor cell in response to a command of a MIMO communication system. In some aspects, the wireless communication device further includes one or more transmitters that reports information of the beams based on the measured beams to the massive MIMO communication system. The information is, in at least one aspect, incorporated in a Beam Specific-Neighbor Cell Relation (BS-NCR).
    Type: Grant
    Filed: April 14, 2016
    Date of Patent: October 26, 2021
    Assignee: Intel Corporation
    Inventors: Min Huang, Yuan Zhu, Xu Zhang
  • Publication number: 20210328744
    Abstract: Embodiments of a User Equipment (UE), an Evolved Node-B (eNB), and methods for communication of uplink messages are generally described herein. The UE may receive, from an eNB, one or more downlink control messages that may indicate an allocation of PUCCH channel resources. The UE may transmit an uplink control message in at least a portion of the allocated PUCCH channel resources. When the PUCCH channel resources are allocated according to an edge configuration, the PUCCH channel resources may be restricted to a lower edge portion and an upper edge portion of the network channel resources. When the PUCCH channel resources are allocated according to a distributed configuration, the PUCCH channel resources may include one or more middle portions of the network channel resources. The middle portions may be exclusive to the lower edge and upper edge portions.
    Type: Application
    Filed: July 1, 2021
    Publication date: October 21, 2021
    Inventors: Wenting Chang, Yuan Zhu, Yushu Zhang, Gang Xiong, Seunghee Han
  • Publication number: 20210328636
    Abstract: Example embodiments are directed towards beam formation matching for communications between a receiver and transmitter in a multiple beam Multiple Input Multiple Output (MIMO) system.
    Type: Application
    Filed: December 10, 2020
    Publication date: October 21, 2021
    Inventors: Yeong-Sun HWANG, Yuan ZHU, Yushu ZHANG, Huaning NIU, Wenting CHANG
  • Patent number: 11152997
    Abstract: Briefly, in accordance with one or more embodiments, an apparatus of a user equipment (UE) comprising circuitry to receive a Beamforming Reference Signal (BRS) transmission from an evolved NodeB (eNB) via one or more transmission beams, divide the one or more transmission beams into one or more transmission beam sets, wherein a transmission beam set comprises a number of consecutive orthogonal frequency-division multiplexing (OFDM) symbols, scan consecutive receiving beams for corresponding transmission beam sets to obtain channel measurements to select a transmission beam and a receiving beam based at least in part on the channel measurements, and receive transmissions from the eNB using the selected transmission beam and the selected receiving beam.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: October 19, 2021
    Assignee: INTEL IP CORPORATION
    Inventors: Yushu Zhang, Gang Xiong, Yuan Zhu, Ralf Bendlin, Jong-Kae Fwu
  • Publication number: 20210314041
    Abstract: Devices for and methods of synchronous beam refinement using a beam refinement reference signal (BRRS) are generally described. In one example embodiment, a UE receives BRRS information indicating switching of a Tx beam. The UE then uses this information to switch an associated Rx beam. In some embodiments, timing information is used to match the switching times. In some embodiments. DCI and CSI-RS operations are used to determine switching for the synchronous beam refinement.
    Type: Application
    Filed: June 17, 2021
    Publication date: October 7, 2021
    Inventors: Wenting Chang, Yuan Zhu, Yushu Zhang, Gang Xiong, Huaning Niu