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: 20220116252
    Abstract: For single carrier based waveform, Discrete Fourier Transform-spread-OFDM (DFT-s-OFDM) and single carrier with a frequency domain equalizer (SC-FDE) can be considered for both DL and UL. For OFDM based transmission scheme including DFT-s-OFDM, a cyclic prefix (CP) is inserted at the beginning of each block, where the last data symbols in a block is repeated as the CP. Typically, the length of CP exceeds the maximum expected delay spread in order to overcome the inter-symbol interference (ISI). For SC-FDE transmission scheme, a known sequence (guard interval (GI), unique word (UW), etc.) can be inserted at both the beginning and end of one block. Further, a linear equalizer in the frequency domain can be employed to reduce the receiver complexity. Compared to OFDM, SC-FDE transmission scheme can reduce Peak to Average Power Ratio (PAPR) and thus allow the use of less costly power amplifier.
    Type: Application
    Filed: January 9, 2020
    Publication date: April 14, 2022
    Applicant: Apple Inc.
    Inventors: Gang XIONG, Yushu ZHANG, Daewon LEE, Alexei DAVYDOV, Seunghee HAN, Jie Zhu
  • Publication number: 20220116247
    Abstract: Systems, apparatuses, methods, and computer-readable media are provided for user equipment (UE) idle mode operations. In embodiments, a UE wakes up more than once during a Discontinuous Reception (DRX) cycle. Inter-frequency measurement requirements may be relaxed based on DRX cycle length. Some embodiments include radiofrequency (RF) circuitry warm-up overhead reduction by on-duration separation with RF circuitry switching pattern adaption. Some embodiments include and RF circuitry warm-up overhead reduction by adaptive synchronization signal block (SSB) reference symbol down-selection. Other embodiments may be described and/or claimed.
    Type: Application
    Filed: September 26, 2019
    Publication date: April 14, 2022
    Applicant: Apple Inc.
    Inventors: Avik SENGUPTA, Bishwarup MONDAL, Alexei DAVYDOV, Sameer PAWAR
  • Patent number: 11303367
    Abstract: An apparatus configured to be employed in a victim transmission reception point (TRP) associated with a new radio (NR) communication system is disclosed. The apparatus comprises a memory interface and a processing circuit. In some embodiments, the processing circuit is configured to process one or more predefined interference signals respectively received from one or more interfering TRPs during a guard period of the victim TRP. In some embodiments, the guard period comprises a time period between a downlink (DL) transmission and an uplink (UL) transmission associated with a time division duplex (TDD) frame of the victim TRP. In some embodiments, the processing circuit is further configured to determine an inter-TRP interference based on the one or more predefined interference signals. In some embodiments, the inter-TRP interference comprises a measurement of a UL interference at the victim TRP from the one or more interfering TRPs.
    Type: Grant
    Filed: March 22, 2018
    Date of Patent: April 12, 2022
    Assignee: Apple Inc.
    Inventors: Guotong Wang, Yushu Zhang, Qian Li, Alexei Davydov, Seok Chul Kwon
  • Publication number: 20220109590
    Abstract: An apparatus can receive or transmit parameters for a sounding reference signal (SRS) transmission configuration as an uplink (UL)/downlink (DL) configuration of a serving cell. A time division duplex (TDD) operation with a plurality of component carriers (CCs) can be enabled/generated based on the parameters and at least one component carriers being reserved for the UL transmission or having a higher priority than a physical channel transmission such as a physical uplink shared channel (PUSCH) transmission or a physical uplink control channel (PUCCH) transmission.
    Type: Application
    Filed: October 15, 2021
    Publication date: April 7, 2022
    Inventors: Hong He, Gang Xiong, Seunghee Han, Hwan-Joon Kwon, Alexei Davydov
  • Patent number: 11297691
    Abstract: Embodiments of interference coordination for aerial vehicle user equipment (UE) are described. In some embodiments, a base station (BS) is configured to select a subset of time-frequency resources dedicated for use in serving aerial vehicle UEs and communicate with the aerial vehicle UEs via the subset of time-frequency resources. In some embodiments, the BS may transmit signaling to a neighbor BS that indicates the BS has dedicated the subset of time-frequency resources for serving aerial vehicle UEs and the subset of time-frequency resources to be used. The BS may receive an indication from the neighbor BS that a neighbor BS is to dedicate the subset of time-frequency resources to serve aerial vehicle UE, and based on the indication, the BS may reduce transmission activities in the subset of time-frequency resources, including refraining from transmitting or reducing an amount of information or power level of signaling to the aerial vehicle UEs.
    Type: Grant
    Filed: May 1, 2018
    Date of Patent: April 5, 2022
    Assignee: Apple Inc.
    Inventors: Victor Sergeev, Seunghee Han, Feng Xue, Alexei Davydov, Gregory Morozov
  • Publication number: 20220103409
    Abstract: Systems, methods, and circuitries are disclosed for determining Precoding Resource Block Groups (PRGs). In one example, a processor of a base station (BS) is configured to determine a plurality of PRGs that includes a number N consecutive Physical Resource Blocks (PRBs) over which a same precoder assignment is used, starting from a reference PRB. The plurality PRGs include a first boundary PRG, a second boundary PRG, and one or more other PRGs. The first boundary PRG is located at an upper boundary of a bandwidth part. The first boundary PRG comprises fewer than N PRBs when the upper boundary of the bandwidth part is not aligned with a PRG boundary. The second boundary PRG comprises fewer than N PRBs when a lower boundary of the bandwidth part is not aligned with a PRG boundary. A downlink data channel is transmitted to a UE in accordance with the precoder assignments.
    Type: Application
    Filed: November 22, 2021
    Publication date: March 31, 2022
    Inventors: Gang Xiong, Debdeep Chatterjee, Yushu Zhang, Alexei Davydov, Wook Bong Lee, Dae Won Lee, Sameer Pawar, Jeongho Jeon, Hong He
  • Publication number: 20220104235
    Abstract: A generation node B (gNB) configured for aperiodic channel state information reference signal (CSI-RS) triggering and transmission may encode signalling for transmission to a user equipment (UE). The signalling to indicate an aperiodic Triggering Offset (aperiodicTriggeringOffset). The aperiodic Triggering Offset may comprise a slot offset. The gNB may encode a downlink control information (DCI) for transmission that may trigger transmission of a CSI-RS in one or more aperiodic CSI-RS resource set(s) (i.e., in one or more slots (n)). The DCI triggers transmission of the aperiodic CSI-RS within a triggered slot with the slot offset (i.e., the aperiodicTriggeringOffset). The gNB may transmit the CSI-RS in resource elements of the triggered slot in accordance with the slot offset, when CSI-RS resources are available in the slot at the slot offset.
    Type: Application
    Filed: October 7, 2021
    Publication date: March 31, 2022
    Inventors: Guotong Wang, Alexei Davydov, Bishwarup Mondal, Avik Sengupta
  • Publication number: 20220095235
    Abstract: Some embodiments of this disclosure include apparatuses and methods for uplink panel selection with power saving. In some embodiments, user equipment (UE) may experience a positional change. In response, the UE may deactivate a first communication panel to save power and activate a second communication panel. The UE may then transmit a status message to a communication node indicating the activation and/or deactivation. The node may then register this activation and/or deactivation. In some embodiments, the node may monitor uplink slots from the first and second communication panel to identify the activation and deactivation. For example, if the node detects an absence of an uplink signal within a slot threshold, the node may identify the panel as being deactivated. The node may establishing communications with another panel based on a detected signal and/or the status message.
    Type: Application
    Filed: February 18, 2020
    Publication date: March 24, 2022
    Applicant: Apple Inc.
    Inventors: Yushu ZHANG, Alexei DAVYDOV, Gang XIONG, Guotong WANG, Hong HE
  • Publication number: 20220095381
    Abstract: A user equipment (UE) configured for operation in a sixth generation (6G) network may perform a random access channel (RACH) procedure with a generation node B (gNB). The UE may encode a physical random access channel (PRACH) preamble for transmission in a PRACH occasion (RO) For carrier frequencies above 52.6 GHz, the UE may determine a Radio Network Temporary Identifier (RNTI) (i.e., either a RA-RNTI or a MsgB-RNTI) based on an index of the PRACH occasion RO index. The UE may also decode a response from the gNB that includes the RNTI. The UE may determine the RNTI based on the RO index in a time domain and the RO index in a frequency domain.
    Type: Application
    Filed: November 16, 2021
    Publication date: March 24, 2022
    Inventors: Gang Xiong, Alexei Davydov, Yingyang Li, Dae Won Lee
  • Publication number: 20220085940
    Abstract: Some embodiments of this disclosure include apparatuses and methods for physical downlink control channel design for a discrete Fourier Transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform. The apparatuses and methods can include at least operating a base station (BS) to generate one or more physical downlink control channels (PDCCH) in a time division multiplexing (TDM) manner using a Discrete Fourier Transform-spread-orthogonal frequency division multiplexing (DFT-s-OFDM) waveform, generate a demodulation reference signal (DMRS) which is multiplexed in the TDM manner with the one or more PDCCH, and transmit the one or more PDCCH and the DMRS to a user equipment (UE).
    Type: Application
    Filed: January 22, 2020
    Publication date: March 17, 2022
    Applicant: Apple Inc.
    Inventors: Gang XIONG, Alexei Davydov, Yushu Zhang, Hong He, Daewon Lee, Jie Zhu
  • Publication number: 20220085931
    Abstract: Disclosed are systems and methods of selecting physical downlink control channel (PDCCH) candidates for non-coherent joint transmission (NC-JT) in a wireless network. For instance, first and second sets of ControlResourceSet and SearchSpace parameters can be configured for a UE. The first and second sets of ControlResourceSet and SearchSpace parameters are configured on a first downlink (DL) component carrier to enable NC-JT. A control channel element (CCE) limit can be determined for the first and second sets of ControlResourceSet and SearchSpace parameters. One or more PDCCH candidates can then be selected for the first and second sets of ControlResourceSet and SearchSpace parameters based at least in part on the determined CCE limits. NC-JT communication including at least a first communication from a first transmission and reception point (TRP), and a second communication from a second TRP can then be received.
    Type: Application
    Filed: January 11, 2020
    Publication date: March 17, 2022
    Applicant: Apple Inc.
    Inventors: Bishwarup MONDAL, Debdeep CHATTERJEE, Fatemeh HAMIDI-SEPEHR, Alexei DAVYDOV
  • Publication number: 20220078825
    Abstract: Methods and apparatus are described for methods and apparatus for carrying out wireless communication using Long Term Evolution (LTE) in a frequency band with low peak-to-average-power. The approach includes precoding, in the frequency domain, a plurality of physical channel signals, followed by multiplexing, where the procoding is performed according to predetermined codes with a code length selected based on a length of an entire signal of the multiplexed precoded plurality of physical channel signals. In addition, the approach includes being configured to map the multiplexed precoded plurality of physical channel signals to subcarriers in the frequency band, as well to generate a time domain waveform based on the mapped signals.
    Type: Application
    Filed: January 3, 2020
    Publication date: March 10, 2022
    Applicant: Apple Inc.
    Inventors: Alexei DAVYDOV, Gang XIONG, Jie ZHU, Yushu ZHANG, Guotong WANG, Daewon LEE, Gregory MOROZOV, Sameer PAWAR
  • Publication number: 20220078085
    Abstract: The disclosure describes configuration schemes for secondary cell (SCell), bandwidth part (BWP) and physical resource block (PRB) indexing. An apparatus of user equipment (UE) for BWP activation and deactivation operation is disclosed, The apparatus includes baseband circuitry that includes a radio frequency (RF) interface, and one or more processors. The one or more processors are to receive radio resource control (RRC) data via the RF interface, configure a timer for a BWP according to the RRC data, and trigger the timer for the BWP in response to detection of an event associated with an access node after the BWP has been activated.
    Type: Application
    Filed: November 15, 2021
    Publication date: March 10, 2022
    Applicant: Apple Inc.
    Inventors: Honglei MIAO, Jeongho JEON, Alexei DAVYDOV, Hong HE, Debdeep CHATTERJEE, Joonyoung CHO, Daewon LEE, Gang XIONG
  • Publication number: 20220077982
    Abstract: The present disclosure provides systems and methods for mapping transmission configuration indication (TCI) states to demodulation reference signal (DMRS) ports groups in a wireless network. For instance, a TCI state to DMRS ports group mapping of a user equipment (UE) can be determined. Each DMRS port in a DMRS ports group shares a quasi-co-location (QCL) assumption. The TCI state to DMRS ports group mapping comprises multiple TCI state groups. The TCI state to DMRS ports group mapping corresponds each TCI state group to one or more DMRS ports groups. A TCI state group from the DMRS ports group mapping can be selected for the UE. Data indicative of the selected TCI state group and the corresponding one or more DMRS ports groups can be provided to the UE based at least in part on the TCI state group from the DMRS ports group mapping.
    Type: Application
    Filed: January 7, 2020
    Publication date: March 10, 2022
    Inventors: Yushu Zhang, Bishwarup Mondal, Alexei Davydov, Guotong Wang, Avik Sengupta
  • Publication number: 20220077911
    Abstract: An approach is described that includes receiving a CSI report, where the CSI report includes a channel quality indicator (CQI), a rank indicator (RI), and a precoding matrix indicator (PMI). The approach further includes constructing a precoding matrix based on a linear combination of a plurality of mutually orthogonal digital Fourier transformation (DFT) spatial beams, and determining a number of bits for the PMI of the precoding matrix. The approach also includes determining a space frequency matrix based, at least in part, on the number of bits for the PMI and the precoding matrix, and compressing the space frequency matrix. Finally, the approach includes determining a compressed PMI based, at least in part, on the space frequency matrix.
    Type: Application
    Filed: January 18, 2020
    Publication date: March 10, 2022
    Applicant: Apple Inc.
    Inventors: Victor SERGEEV, Alexei DAVYDOV, Bishwarup MONDAL, Gregory MOROZOV, Dmitry DIKAREV
  • Publication number: 20220077942
    Abstract: An approach is described to for new radio (NR) antenna test function (ATF) measurements by a user equipment (UE). The approach includes measuring a first average phase of receive signals on resource elements that carry secondary synchronization signals (SS) received by a reference individual receiver branch. The approach also includes measuring a second average phase of the receive signals on the resource elements that carry secondary synchronization signals received by one other individual receiver branch different from the reference individual receiver branch. The approach further includes determining a difference between the first average phase and the second average phase. An indication of the difference is reported to test equipment.
    Type: Application
    Filed: February 14, 2020
    Publication date: March 10, 2022
    Applicant: Apple Inc.
    Inventors: Andrey CHERVYAKOV, Dmitry BELOV, Aida VERA LOPEZ, Alexei DAVYDOV, Jie CUI
  • Patent number: 11272530
    Abstract: Embodiments of a User Equipment (UE) and methods of communication are generally described herein. If a higher layer parameter altMCS-Table is configured, and a physical downlink shared channel (PDSCH) is assigned by a downlink control information (DCI) format 1, 1B, 1D, 2, 2A, 2B, 2C, or 2D, the UE may, for some subframe/frame configurations, determine a number of physical resource blocks (PRBs) for the transport block as a maximum of: 1; and a floor function applied to a product of a total number of allocated PRBs, a parameter dependent on a special subframe configuration, and a scaling parameter. For other subframe/frame configurations, the UE may determine the number of PRBs for the transport block as a maximum of: 1; and the floor function applied to a product of the total number of allocated PRBs and the scaling parameter.
    Type: Grant
    Filed: July 20, 2020
    Date of Patent: March 8, 2022
    Assignee: Apple Inc.
    Inventors: Alexei Davydov, Sameer Pawar
  • Publication number: 20220070974
    Abstract: Embodiments of a User Equipment (UE), a generation Node-B (gNB) and methods for communication are generally described herein. The UE may the UE 102 may receive from a gNB, control signaling that indicates: a first pre-coding matrix indicator (PMI) that indicates a first pre-coder for a first sub-band; and a second PMI that indicates a second pre-coder for a second sub-band. The first and second pre-coders may be included in predetermined candidate pre-coders. The UE may encode a physical uplink shared channel (PUSCH) block for transmission. The UE may scale the PUSCH block in the first sub-band by the first pre-coder. The UE may scale the PUSCH block in the second sub-band by the second pre-coder.
    Type: Application
    Filed: October 4, 2021
    Publication date: March 3, 2022
    Inventors: Yushu Zhang, Alexei Davydov, Wook Bong Lee, Dae Won Lee, Seunghee Han
  • Publication number: 20220069882
    Abstract: Systems and methods of beam reporting for multiple DL processes are described. A UE receives a beam management processes configuration that provides information about beam management reference signals for beam management procedures. The UE transmits a UE capability report that indicates beam management capabilities of the UE and, later, an indication of whether the UE intends to engage in beam refinement. The UE measures the beam management reference signals and receives a beam reporting message that indicates at least one of the beam management procedures to report. In response, the UE transmits the beam report. The beam report contains beam management reference signal measurements of the beam management procedures indicated by the beam reporting message.
    Type: Application
    Filed: October 25, 2021
    Publication date: March 3, 2022
    Inventors: Yushu Zhang, Huaning Niu, Wook Bong Lee, Alexei Davydov, Guotong Wang
  • Publication number: 20220070855
    Abstract: Systems, apparatuses, methods, and computer-readable media are provided for use in a wireless network for control signaling of uplink transmission for multiple antenna panels.
    Type: Application
    Filed: January 6, 2020
    Publication date: March 3, 2022
    Inventors: Yushu Zhang, Gang Xiong, Guotong Wang, Bishwarup Mondal, Alexei Davydov