Patents by Inventor Alexei Davydov

Alexei Davydov 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: 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: 20210076391
    Abstract: Disclosed embodiments are related to beam management in cellular communication networks, and in particular, provide a new transmission (Tx) beamforming indication based on the flexible Tx beam-forming assignment on the corresponding reference signal configured in a transmission configuration indicator (TCI) state for downlink (DL) or spatial relation information in the uplink (UL). The Tx beam-forming on the reference signal of the TCI state configured for the DL physical channel/reference signal can be updated based on reported Tx beam in the UL or using UL measurements from Sounding Reference Signal (SRS) transmission. Similarly, spatial relation information configuration used to indicate Tx beam-forming in the UL, may be also updated based on the reference signal measurements in DL or by suing Downlink Control Information (DCI) based beam indication in a scheduling request indicator (SRI). Other embodiments may be described and/or claimed.
    Type: Application
    Filed: November 20, 2020
    Publication date: March 11, 2021
    Inventors: Alexei Davydov, Avik Sengupta, Bishwarup Mondal
  • Publication number: 20210076360
    Abstract: An apparatus configured to be employed in a gNodeB associated with a new radio (NR) communication system that support resource sharing between NR physical downlink shared channel (PDSCH) and NR physical downlink control channel (PDCCH) is disclosed. The apparatus comprises a processing circuit configured to generate a PDSCH dynamic rate matching resource set configuration signal comprising information on one or more overlap resource sets, wherein each the one or more overlap resource sets comprises time-frequency resources on which any overlapping PDSCH may or may not be mapped, based on an indication provided within a PDSCH rate matching indicator signal.
    Type: Application
    Filed: November 20, 2020
    Publication date: March 11, 2021
    Inventors: Alexei Davydov, Debdeep Chatterjee, Hong He, Gang Xiong, Hwan-Joon Kwon
  • Publication number: 20210067391
    Abstract: Various embodiments herein provide techniques for reference signal (RS) configuration for high frequency bands (e.g., frequency above 52.6 GHz). For example, embodiments may include techniques for configuration of a demodulation reference signal (DM-RS), a channel state information reference signal (CSI-RS), and/or a sounding reference signal (SRS). The RS configuration may provide a low peak-to-average power ratio (PAPR) compared to prior techniques. Other embodiments may be described and claimed.
    Type: Application
    Filed: November 13, 2020
    Publication date: March 4, 2021
    Inventors: Avik Sengupta, Alexei Davydov
  • Patent number: 10939423
    Abstract: Techniques for detecting puncturing of a first PDSCH (physical downlink shared channel) associated with a UE (user equipment) by a second PDSCH with a shorter TTI (transmission time interval) are discussed. A base station (e.g., Evolved NodeB or eNB) can configure the UE for potential puncturing and/or parameter(s) of the second PDSCH. The UE can detect puncturing of the first PDSCH based on the configuration, and can discard punctured symbols to mitigate interference from the second PDSCH.
    Type: Grant
    Filed: June 23, 2016
    Date of Patent: March 2, 2021
    Assignee: Apple Inc.
    Inventors: Alexei Davydov, Seunghee Han, Victor Sergeev, Hong He, Christian Ibars Casas
  • Patent number: 10939321
    Abstract: Technology for a user equipment (UE) operable to determine a transport block size (TBS) is disclosed. The UE can determine a number of assigned resource elements (REs) in one or more symbols for a transport block. The UE can determine a reference number of REs per physical resource block (PRB) in the transport block based on a reference number of REs for the transport block corresponding to each PRB and an assigned number of PRBs for the transport block. The UE can determine a TBS for the transport block based at least on the reference number of REs per PRB in the transport block. The UE can encode information in a selected transport block for transmission via a physical uplink shared channel (PUSCH) to a Next Generation NodeB (gNB) in accordance with the TBS determined at the UE.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: March 2, 2021
    Assignee: APPLE INC.
    Inventors: Alexei Davydov, Seung Hee Han, Debdeep Chatterjee, Hong He, Gregory V. Morozov, Ajit Nimbalker, Fatemeh Hamidi-Sepehr, Dae Won Lee, Yongjun Kwak
  • Publication number: 20210050887
    Abstract: Embodiments of a Generation Node-B (gNB), User Equipment (UE) and methods for communication are generally described herein. The gNB may map data symbols to resource elements (REs) of virtual resource blocks (VRBs). The gNB may interleave the data symbols, on a per-VRB basis, to spatial layers of a multi-layer multiple-input multiple-output (MIMO) transmission. The data symbols may be interleaved based on different interleave patterns of VRB indexes for the spatial layers. The gNB may map the interleaved data symbols of the spatial layers to REs of physical resource blocks (PRBs) for orthogonal frequency division multiplexing (OFDM) transmission.
    Type: Application
    Filed: November 2, 2020
    Publication date: February 18, 2021
    Inventors: Dae Won Lee, Seunghee Han, Ajit Nimbalker, Alexei Davydov, Paul C. Wei, Dmitry Dikarev
  • Patent number: 10924175
    Abstract: Network devices and systems in 5G and new radio (NR) infrastructures can utilize beam management operations to ensure communications for beam management procedure triggering including beam reporting, even during fall-back mode when the current receive (Rx) beam for downlink (DL) and transmit (Tx) beam for uplink (UL) fail. Additionally, reduction in overhead can be achieved with a reference beam pair link based beam reporting in a fall-back mode or not. This beam reporting can be a group based beam reporting and based on Reference Signal Received Powers (RSRPs) of beams and a differential RSRP corresponding thereto.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: February 16, 2021
    Assignee: Apple Inc.
    Inventors: Guotong Wang, Yushu Zhang, Alexei Davydov, Gang Xiong
  • Patent number: 10925005
    Abstract: This disclosure proposes to use multiple power control loops in the uplink. Each power control loop may be associated with a respective antenna beam transmitted from an antenna array of the electronic device (e.g. UE) in the uplink. For example, a beam (or uplink signal) may be associated with 1, 2 or even more MIMO layer. Hence, in this latter case, each power control loop may be associated with a respective set of one or more MIMO layers. This concept is application to open-loop, closed-loop power control or both.
    Type: Grant
    Filed: March 23, 2017
    Date of Patent: February 16, 2021
    Assignee: Apple Inc.
    Inventors: Alexei Davydov, Hyejung Jung, Gregory Morozov, Victor Sergeev
  • Patent number: 10925054
    Abstract: Embodiments of a Machine Type Communication User Equipment (MTC UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The MTC UE may determine a system timing based on reception of a primary synchronization signal (PSS) and a secondary synchronization signal (SSS). The MTC UE may receive, from the gNB, radio resource control (RRC) signaling that indicates one or more parameters of a configurable resynchronization signal (RSS). The RSS may be for resynchronization, by the MTC UE, after the MTC UE awakens from a power save mode. The parameters of the RSS in the RRC signaling may depend on a target coverage of the MTC UE. The MTC UE may determine an updated system timing based on reception of the RSS.
    Type: Grant
    Filed: May 10, 2019
    Date of Patent: February 16, 2021
    Assignee: Apple Inc.
    Inventors: Honglei Miao, Alexei Davydov, Seunghee Han, Gang Xiong, Yushu Zhang, Dae Won Lee, Alexey Khoryaev, Mikhail Shilov, Sergey Panteleev, Kilian Roth, Leonardo Gomes Baltar, Gregory Morozov
  • Patent number: 10925066
    Abstract: Technology for a user equipment (UE) operable for quasi-co-location (QCL) is disclosed. The UE can demodulate a synchronization signal (SS) block transmitted by a gNB from a first antenna port, wherein one or more of a Doppler shift, a Doppler spread, an average delay, a delay spread, and spatial receiving parameters are derived from the SS block. The UE can decode a QCL indication that provides an assumption of QCL between a first reference signal of the first antenna port and a second reference signal of a second antenna port. The UE can demodulate the physical channel or the reference signal transmitted by the gNB from the second antenna port, using one or more of the Doppler shift, the Doppler spread, the average delay, the delay spread, and the spatial receiving parameters based on the assumption of QCL.
    Type: Grant
    Filed: May 4, 2018
    Date of Patent: February 16, 2021
    Assignee: APPLE INC.
    Inventors: Alexei Davydov, Dae Won Lee, Gang Xiong, Yushu Zhang, Wook Bong Lee
  • Publication number: 20210045125
    Abstract: Embodiments of the present disclosure relate generally to additional conditions for simultaneous reception of different “Reception Types.” For example, in some embodiments support for simultaneous reception is provided only when the antenna ports used by a subset of physical channels identified by a higher-layer-index are QCL-ed with each other with respect to spatial Rx parameter.
    Type: Application
    Filed: October 9, 2020
    Publication date: February 11, 2021
    Inventors: Bishwarup Mondal, Alexei Davydov
  • Publication number: 20210045149
    Abstract: Various embodiments herein provide techniques to provide a default transmission configuration indicator (TCI) state to a user equipment for receiving a physical downlink shared channel (PDSCH) that is scheduled using cross-carrier scheduling. In embodiments, a next generation Node B (gNB) may indicate the default TCI state to the UE using one or both of radio resource control (RRC) signaling and/or a medium access control (MAC) control element (CE). Other embodiments may be described and claimed.
    Type: Application
    Filed: October 12, 2020
    Publication date: February 11, 2021
    Inventors: Alexei Davydov, Yingyang Li, Seunghee Han
  • Patent number: 10917215
    Abstract: Methods, systems, and devices for transmission and reception of SPS communications are disclosed herein. User equipment (UE) is configured to receive, in a first subframe, a physical downlink control channel or enhanced physical downlink control channel (PDCCH/EPDCCH) corresponding to semi-persistent scheduling (SPS) activation. The PDCCH/EPDCCH conveys a value of nSCID. The UE configures, based on the SPS activation, a downlink (DL) assignment in a second subframe for receiving an SPS physical downlink shared channel (PDSCH) without a corresponding PDCCH/EPDCCH. The UE determines a reference signal sequence corresponding to the SPS PDSCH using nSCID derived from the PDCCH/EPDCCH corresponding to the associated SPS activation. The UE receives the SPS PDSCH in a second subframe. The UE processes the SPS PDSCH based on the reference signal sequence for the SPS PDSCH in the second subframe using the nSCID derived from the PDCCH/EPDCCH corresponding to the associated SPS activation.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: February 9, 2021
    Assignee: APPLE INC.
    Inventors: Seunghee Han, Yuan Zhu, Xiaogang Chen, Alexei Davydov, Jong-Kae Fwu
  • Publication number: 20210021325
    Abstract: Various embodiments herein provide techniques for beam failure recovery in uplink. A user equipment (UE) may be configured with one or more thresholds, such as one or more power-related thresholds and/or one or more duty cycle thresholds. The UE may proactively detect a beam failure event based on the one or more thresholds. Other embodiments may be described and claimed.
    Type: Application
    Filed: October 2, 2020
    Publication date: January 21, 2021
    Inventors: Alexei Davydov, Aida Vera Lopez
  • Patent number: 10897292
    Abstract: Various embodiments provide techniques to determine a TBS for use with 1024 QAM communications that use more than one multiple input, multiple output (MIMO) layer based on a reference TBS for use with 1024 QAM communications that use a single MIMO layer. The reference TBS may be determined based on a TBS index and a resource allocation for the communication. The TBS index may be determined based on a modulation and coding scheme (MCS) index. Other embodiments may be described and claimed.
    Type: Grant
    Filed: January 3, 2020
    Date of Patent: January 19, 2021
    Assignee: Apple Inc.
    Inventor: Alexei Davydov
  • Publication number: 20210014848
    Abstract: Embodiments of a user equipment (UE) configured for operation in a fifth generation (5G) new radio (NR) network are disclosed herein. In some embodiments, a media access control Layer (MAC) control element (CE) (MAC CE) may activate a spatial relation info for a sounding reference signal (SRS) resource for two or more indicated component carriers (CCs). The spatial relation info for the SRS resource for the two or more indicated CCs may be applied in response to the activation. The SRS resource may be transmitted in the two or more indicated CCs with a same spatial transmission filter that is used for another reference signal configured in the spatial relation info when the UE is configured with one or more SRS resource configurations and when the spatial relation info is activated.
    Type: Application
    Filed: September 29, 2020
    Publication date: January 14, 2021
    Inventors: Alexei Davydov, Avik Sengupta
  • Publication number: 20210006443
    Abstract: A reference signal sequence to modulate the demodulation reference signal for the Physical Broadcast Channel in New Radio standard is disclosed. Formulas are proposed for calculating the initialization value for the RS sequence generator so as to accord with the characteristics of New Radio.
    Type: Application
    Filed: July 26, 2018
    Publication date: January 7, 2021
    Inventors: Gregory Morozov, Daewon Lee, Alexei Davydov, Seunghee Han, Yongjun Kwak
  • Publication number: 20200412429
    Abstract: Codebook designs are disclosed for full-dimensional multiple-input-multiple output (FD-MIMO) wireless cellular systems. The FD-MIMO cookbooks employ channel state information reference signals (CSI-RS). The codebook designs are used in beamforming CSI-RSs by the enhanced nodeB (eNB), where the CSI-RS is sent to the user equipment (UE), enabling the UE to perform channel estimation. The codebooks support beam selection, co-phasing between polarizations, and beam combining.
    Type: Application
    Filed: June 8, 2020
    Publication date: December 31, 2020
    Inventors: Alexei Davydov, Yuan Zhu, Hong He
  • Publication number: 20200412505
    Abstract: Embodiments herein provide techniques for power saving in non-codebook-based uplink transmission. Other embodiments may be described and claimed.
    Type: Application
    Filed: September 14, 2020
    Publication date: December 31, 2020
    Inventors: Alexei Davydov, Toufiqul Islam, Gregory Ermolaev