Patents by Inventor Yushu Zhang

Yushu Zhang 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: 10986622
    Abstract: Systems, apparatuses, methods, and computer-readable media are provided for selecting a TCI-State for receiving downlink transmissions. In one example a processor/UE is configured to determine one or more candidate TCIs for a downlink slot; determine a scheduling offset between a physical downlink shared channel (PDSCH) and a physical downlink control channel (PDCCH); prioritize the candidate TCIs based on the scheduling offset; identify a highest priority candidate TCI; and select the highest priority candidate TCI for receiving the PDSCH.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: April 20, 2021
    Assignee: Apple Inc.
    Inventors: Yushu Zhang, Guotong Wang, Gang Xiong, Bishwarup Mondal, Alexei Davydov
  • Patent number: 10985848
    Abstract: Provided herein are method and apparatus for perform radio link monitoring (RLM) based on a Reference signal (RS). An embodiment provides a user Equipment (UE) comprising circuitry configured to: decode a Reference Signal (RS) received from an access node; and determine beam quality for one or more beam pair links (BPLs) of the RS between the UE and the access node based on the decoded RS, wherein each of the BPLs comprises a transmit (Tx) beam of the access node and a receive (Rx) beam of the UE. Also provided is a procedure of RLM. At least some embodiments allow for beam recovery request for UE beam refinement, and allow for determining whether radio link failure (RLF) occurs.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: April 20, 2021
    Assignee: Apple Inc.
    Inventors: Yushu Zhang, Wook Bong Lee, Dae Won Lee, Seunghee Han, Alexei Davydov, Guotong Wang, Gregory Morozov
  • Patent number: 10980008
    Abstract: Described is an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node-B (eNB) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to allocate a first set of Resource Elements (REs) for a set of Uplink Control Information (UCI) types corresponding with a first set of frequency resources. The first circuitry may also be operable to allocate a second set of REs for the set of UCI types corresponding with a second set of frequency resources. The second circuitry may be operable to prepare one or more Physical Uplink Shared Channel (PUSCH) transmissions comprising the first set of REs and the second set of REs. A number of REs in the first set of REs may be different than a number of REs in the second set of REs.
    Type: Grant
    Filed: December 7, 2018
    Date of Patent: April 13, 2021
    Assignee: Apple Inc.
    Inventors: Gang Xiong, Yushu Zhang, Ajit Nimbalker, Joonyoung Cho
  • Publication number: 20210105753
    Abstract: Systems, apparatuses, methods, and computer-readable media are provided for time domain resource allocations in wireless communications systems. Disclosed embodiments include time-domain symbol determination and/or indication using a combination of higher layer and downlink control information signaling for physical downlink shared channel and physical uplink shared channel; time domain resource allocations for mini-slot operations; rules for postponing and dropping for multiple mini-slot transmission; and collision handling of sounding reference signals with semi-statically or semi-persistently configured uplink transmissions. Other embodiments may be described and/or claimed.
    Type: Application
    Filed: November 25, 2020
    Publication date: April 8, 2021
    Applicant: Apple Inc.
    Inventors: Yushu ZHANG, Alexei DAVYDOV, Guotong WANG, Gang XIONG, Hong HE
  • Patent number: 10972238
    Abstract: Technology for a next generation node B (gNB), operable to use phase tracking reference signals (PT-RS) is disclosed. The gNB can identify a modulation and coding 5 scheme (MCS) for the UE for a bandwidth part (BWP) with a subcarrier spacing (SCS). The gNB can select a time density of the PT-RS based on the MCS. The gNB can select a frequency density of the PT-RS based on an allocated bandwidth in the BWP. The gNB can encode the time density and the frequency density, for the PT-RS for transmission to the UE in higher layer signaling.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: April 6, 2021
    Assignee: APPLE INC.
    Inventors: Yushu Zhang, Alexei Davydov, Gang Xiong, Wook Bong Lee, Guotong Wang
  • Publication number: 20210100056
    Abstract: Embodiments are presented herein of apparatuses, systems, and methods for a user equipment device (UE) to transmit an indication of a link failure on a secondary cell. The indication may be transmitted on resources selected based on one or more conditions. One or more priority rules may be used to resolve collisions. The UE may further make an assumption of a beam or beams to use for communications with the secondary cell following the link failure and prior to receiving an indication from the network of a selected beam.
    Type: Application
    Filed: July 16, 2020
    Publication date: April 1, 2021
    Inventors: Yushu Zhang, Dawei Zhang, Haijing Hu, Haitong Sun, Hong He, Wei Zeng, Yakun Sun, Yuchul Kim
  • Publication number: 20210100039
    Abstract: A device may wirelessly transmit a physical RACH, and a first message on a physical uplink shared channel (PUSCH), in a first step of a 2-step random access channel (RACH) procedure. The device may receive a second message on a physical downlink shared channel in response to successful detection of the first message, in a second step of the 2-step RACH procedure. When detection of the first message is unsuccessful, the device may be instructed to fall back to a 4-step RACH procedure. The device may be configured with one or more first message transmit opportunities (PO), one of which may include one or more PUSCH resource units (PRUs). Some of the communication parameters of the device may be configured to be common for each PO, while other communication parameters may be configured per PRU. Respective new Radio Network Temporary ID values may be defined for the first message and second message.
    Type: Application
    Filed: September 16, 2020
    Publication date: April 1, 2021
    Inventors: Yushu Zhang, Wei Zeng, Yuqin Chen, Dawei Zhang, Fangli Xu, Haijing Hu, Haitong Sun, Hong He, Yakun Sun, Yuchul Kim
  • Publication number: 20210099223
    Abstract: Apparatuses, systems, and methods for performing downlink signal reception with antenna panel switching in a wireless communication system. A cellular base station may receive an indication of an antenna panel activation delay from a wireless device. The cellular base station may select a scheduling offset for a transmission to the wireless device based at least in part on the antenna panel activation delay. The scheduling offset may be selected to be at least the length of the antenna panel activation delay if it is expected that the wireless device may perform antenna panel activation to receive the transmission. The cellular base station may schedule the transmission to the wireless device using the selected scheduling offset, and may perform the transmission to the wireless device at the selected scheduling offset after scheduling the transmission to the wireless device.
    Type: Application
    Filed: August 25, 2020
    Publication date: April 1, 2021
    Inventors: Yushu Zhang, Dawei Zhang, Haitong Sun, Wei Zeng, Hong He, Yuchul Kim, Chunhai Yao, Haijing Hu
  • Publication number: 20210100022
    Abstract: Apparatuses, systems, and methods for providing downlink control for multi-TRP transmission. A cellular base station may provide a downlink control information transmission to a wireless device scheduling downlink transmissions to the wireless device from multiple transmission reception points. The downlink control information may include information that can be used by the wireless device to determine any or all of physical resource block bundling sizes, frequency domain resource allocations, modulation and coding schemes, redundancy versions, phase tracking reference signal configurations, and any of various other possible types of configuration information for the downlink transmissions. The wireless device may receive the downlink transmissions from the plurality of transmission reception points in accordance with the downlink control information.
    Type: Application
    Filed: September 17, 2020
    Publication date: April 1, 2021
    Inventors: Yushu Zhang, Haitong Sun, Wei Zeng, Hong He, Yuchul Kim, Dawei Zhang, Haijing Hu, Yakun Sun
  • Publication number: 20210099271
    Abstract: A wireless user equipment (UE) may employ any of various mechanisms for reporting signal quality measurements to a wireless network. The UE may impose a time delay between measurement and reporting, based on a delay parameter K. The UE may average measurements obtained at different measurement instances. The UE may employ any of various schemes for prioritizing transmission of one type of report over another, when temporal collisions occur between different types of report. The UE may employ a differential report that includes a state for indicating that a beam is not workable. The UE may employ a beam index that includes a state for indicating an invalid beam. A base station may receive a signal quality report and determine workability of a beam, e.g., by triggering a report of channel state information.
    Type: Application
    Filed: September 16, 2020
    Publication date: April 1, 2021
    Inventors: Yushu Zhang, Yakun Sun, Fangli Xu, Yuqin Chen, Dawei Zhang, Haijing Hu, Chunhai Yao, Yuchul Kim, Hong He, Wei Zeng, Haitong Sun
  • Patent number: 10966183
    Abstract: Technology for a user equipment (UE) configured to perform beam failure recovery. The UE can encode a beam failure recovery (BFR) request for transmission on a physical random-access channel (PRACH) or a physical uplink control channel (PUCCH) to a next generation node B (gNB). The UE can monitor a dedicated physical downlink control channel (PDCCH) control resource set (CORESET) for a response from the gNB to the beam failure recovery request. The UE can select a default physical downlink shared channel (PDSCH) beam, wherein it is assumed, at the UE that a same quasi co-location (QCL) assumption for a PDSCH as a QCL assumption for the dedicated PDCCH CORESET; or a PDSCH demodulation reference signal (DMRS) is QCLed with a downlink (DL) reference signal (RS) of an identified candidate beam by the UE. The UE can decode a beam failure recovery request response from the gNB.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: March 30, 2021
    Assignee: APPLE INC.
    Inventors: Guotong Wang, Alexei Davydov, Yushu Zhang
  • Patent number: 10959210
    Abstract: Embodiments of the present disclosure describe configuration of spatial and power control parameters for uplink transmissions. Other embodiments may be described and claimed.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: March 23, 2021
    Assignee: Intel Corporation
    Inventors: Zhibin Yu, Yushu Zhang
  • Patent number: 10958386
    Abstract: Devices and methods of providing symmetric UL and DL ACK/NACKs is generally described. UL ACK/NACKs of different UEs are multiplexed and received by a UE with a PUSCH. The receiving UE in response transmits the DL ACK/NACK. The ACK/NACK may be transmitted in a localized or distributed manner among subbands that may be adjacent or each may have blocks separated by blocks of a different subband. The ACK and NACK may use independent resources or the NACK may not be transmitted on the single ACK/NACK resource, the lack of an ACK serving as a NACK. The ACK/NACK may be transmitted using a beamforming weight shaped by the received PUSCH/PDSCH. The ACK/NACK symbol may be located in the first symbol, adjacent to the PUSCH/PDSCH, or at the end of a TTI. If adjacent, the UL grant or UL assignment may indicate whether the ACK/NACK resource is used by the PUSCH/PDSCH.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: March 23, 2021
    Assignee: Apple Inc.
    Inventors: Gang Xiong, Huaning Niu, Hooman Shirani-Mehr, Yushu Zhang, Yuan Zhu
  • Patent number: 10952186
    Abstract: Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for transmitting uplink control information in new radio (NR) applications. Various embodiments describe how to calculate a number of reserved HARQ-ACK resource elements. Other embodiments may be described and claimed.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: March 16, 2021
    Assignee: Apple Inc.
    Inventors: Gang Xiong, Joonyoung Cho, Yushu Zhang, Ajit Nimbalker, Lopamudra Kundu
  • Patent number: 10952188
    Abstract: Methods and apparatus are described for transmitting uplink control information (UCI) over an OFDMA-based uplink. In some embodiments, UCI symbols are mapped to resource elements (REs) in the time/frequency resource grid to maximize frequency diversity. In some embodiments, UCI is mapped in a manner that takes into account channel estimation performance by mapping UCI symbols to those REs that are closest (in terms of OFDM subcarriers/symbols) to REs that carry reference signals.
    Type: Grant
    Filed: May 8, 2019
    Date of Patent: March 16, 2021
    Assignee: Apple Inc.
    Inventors: Ralf Matthias Bendlin, Gang Xiong, Jong-Kae Fwu, Hong He, Yushu Zhang, Seunghee Han, Yuan Zhu
  • Patent number: 10951290
    Abstract: Described is an apparatus of a User Equipment (UE) operable to communicate with an Evolved Node-B (eNB) on a wireless network. The apparatus may comprise a first circuitry and a second circuitry. The first circuitry may be operable to process a Downlink (DL) transmission carrying one or more Phase Tracking Reference Signal (PT-RSes). The second circuitry may be operable to generate an Uplink (UL) transmission carrying a Layer Indicator (LI) based at least on a number of PT-RS Antenna Ports (APs) associated with the PT-RSes.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: March 16, 2021
    Assignee: Apple Inc.
    Inventors: Yushu Zhang, Victor Sergeev, Guotong Wang, Alexei Davydov, Gang Xiong
  • Publication number: 20210076389
    Abstract: Technology for a user equipment (UE) operable to decode a resource mapping pattern of a phase tracking reference signal (PT-RS) received from a base station in a wireless network is disclosed. The UE can decode control signaling received in a downlink from the base station. The control signaling can indicate a resource mapping pattern for a PT-RS. The UE can identify the resource mapping pattern for the PT-RS based on the control signaling received from the base station. The UE can encode one or more PT-RS for transmission to the base station in an uplink in accordance with the resource mapping pattern for the PT-RS.
    Type: Application
    Filed: August 7, 2017
    Publication date: March 11, 2021
    Inventors: Yushu Zhang, Yuhang Guo, Gang Xiong, Hua Li, Yuan Zhu
  • Publication number: 20210076397
    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: August 3, 2016
    Publication date: March 11, 2021
    Inventors: GANG XIONG, WENTING CHANG, HUANING NIU, YUSHU ZHANG, YUAN ZHU
  • Patent number: 10925116
    Abstract: A UE can include processing circuitry coupled to memory. To configure the UE for semi-persistent scheduling (SPS) transmission or a grant-free transmission, the processing circuitry is to decode RRC signaling from a base station, the RRC signaling configuring a plurality of transmission configuration information (TCI) candidates indicating a first set of transmission beams for an initial transmission on an SPS PDSCH. The initial transmission uses an initial transmission beam that is selected based on a TCI beam index. A MAC CE from the base station is decoded, the MAC CE indicating a re-configuration of the plurality of TCI candidates to include at least a second set of transmission beams for the SPS PDSCH. A transmission beam is selected from the second set of transmission beams based on the TCI beam index. Downlink data received in a subsequent transmission via the selected transmission beam on the SPS PDSCH is decoded.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: February 16, 2021
    Assignee: Apple Inc.
    Inventors: Yushu Zhang, Gang Xiong, Guotong Wang, Alexei Vladimirovich Davydov
  • Patent number: 10924163
    Abstract: Network devices and systems in 5G advance long term evolution (LTE) and new radio (NR) infrastructures utilize beam management operations to ensure communications for channel state information (CSI) reporting by a user equipment (UE). CSI report configuration reporting settings are processed based on a codebook subset restriction to indicate pre-coding matrix indicators (PMIs) that are restricted and non-restricted for PMI reporting associated with a rank indicator (RI). Based on the codebook subset restriction, an advanced CSI codebook or a new radio (NR) codebook is generated to be transmitted on non-restricted beams of the codebook subset restriction.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: February 16, 2021
    Assignee: Apple Inc.
    Inventors: Alexei Dayvdov, Gregory V. Morozov, Yushu Zhang, Victor Sergeev, Wook Bong Lee, Dmitry Dikarev