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).

  • Publication number: 20210111930
    Abstract: Various embodiments herein provide techniques for minimum mean-square error interference rejection combining (MMSE-IRC) processing of a received signal, distributed between a baseband unit (BBU) and a remote radio unit (RRU). The RRU may perform a first phase of processing based on an extended channel that includes a channel of one or more user equipments (UEs) served by the RRU and interference samples that correspond to other cells or additive noise. The first phase may include scaling the interference samples by a scaling coefficient to obtain a modified extended channel, and performing maximum ratio combining (MRC) on the modified extended channel to obtain a processed signal. The RRU may send the processed signal to the BBU for the second phase of processing. The second phase of processing may include regularized zero forcing to remove interference. Other embodiments may be described and claimed.
    Type: Application
    Filed: December 22, 2020
    Publication date: April 15, 2021
    Inventors: Alexei Davydov, Victor Sergeev, Bishwarup Mondal
  • Publication number: 20210105122
    Abstract: Various embodiments herein provide physical uplink control channel (PUCCH) designs for discrete Fourier transform-spread-orthogonal frequency-division multiplexing (DFT-s-OFDM) waveforms for systems operating above the 52.6 GHz carrier frequency. Some embodiments of the present disclosure may be directed to phase tracking reference signal (PT-RS) design for PUCCH with carrier frequencies above 52.6 GHz. Other embodiments may be disclosed and/or claimed.
    Type: Application
    Filed: November 20, 2020
    Publication date: April 8, 2021
    Inventors: Gang Xiong, Seunghee Han, Alexei Davydov, Daewon Lee
  • 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
  • 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: 10965351
    Abstract: A method comprises configuring a transmission mode for a user equipment (UE) based on user equipment specific reference signals (UE-RS) and configuring one or more precoding resource groups; and providing a dynamic indication to indicate which precoding resource group is valid for a physical downlink shared channel.
    Type: Grant
    Filed: April 30, 2019
    Date of Patent: March 30, 2021
    Assignee: Apple Inc.
    Inventors: Alexei Davydov, Yuan Zhu, Gregory V. Morozov
  • Publication number: 20210083911
    Abstract: Various embodiments herein provide techniques for synchronization signal block (SSB) configuration for wireless cellular networks. The SSB may be for carrier frequencies above 52.6 gigahertz (GHz). Other embodiments may be described and claimed.
    Type: Application
    Filed: December 1, 2020
    Publication date: March 18, 2021
    Inventors: Gregory Morozov, Gang Xiong, Alexei Davydov, Daewon Lee
  • Publication number: 20210084669
    Abstract: In accordance with various embodiments herein, for single downlink control information (DCI) and/or multi-DCI multi-transmission-reception point (TRP) transmission, a default physical downlink shared channel (PDSCH) beam is determined based on the lowest indexed control resource set (CORESET) within the set of monitored CORESETs in the latest slot with the same value of CORESETPoolIndex. Other embodiments may be described and claimed.
    Type: Application
    Filed: November 5, 2020
    Publication date: March 18, 2021
    Inventors: Bishwarup Mondal, Alexei Davydov
  • 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: 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: 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: 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