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).

  • METHOD AND APPARATUS FOR PRECODER DETERMINATION AND PRECODER MATRIX INDICATOR (PMI) INDICATION FOR UPLINK TRANSMISSION
    Publication number: 20200366344
    Abstract: Provided herein are method and apparatus for precoder determination and precoder matrix indicator (PMI) indication for uplink transmission. The disclosure provides an apparatus for a user equipment (UE), comprising circuitry configured to: determine a precoder for each of a plurality of precoder resource block groups (PRGs) for an uplink transmission, wherein the plurality of PRGs are configurable in at least one of PRG size and number; and precode each of the plurality of PRGs with a determined precoder; and a memory to store the determined precoder for each of the plurality of PRGs.
    Type: Application
    Filed: August 6, 2018
    Publication date: November 19, 2020
    Inventors: Alexei Davydov, Yushu Zhang, Victor Sergeev, Guotong Wang, Leiqin Yan
  • NR DCI CONFIGURATION FOR UPLINK POWER TRANSMISSION
    Publication number: 20200367217
    Abstract: Systems and methods for transmission of full power uplink transmission in 5G networks are described. The gNB provides TPMI precoding information in DCI of a PDCCH in which the field size for precoding information and number of layers are fixed irrespective of the SRI. The gNB indicates in RRC signaling the use of codebook-based transmission for UL. If different SRS resources with different number of antenna ports are configured, the bitwidth of the SRI field is the maximum number of ports among the configured SRS resources in an SRS resource set with usage set to ‘codebook’. If the number of ports for a configured SRS resource in the set is less than the maximum number of ports, the most significant bits of the field have a value of ‘0’.
    Type: Application
    Filed: August 5, 2020
    Publication date: November 19, 2020
    Inventors: Guotong Wang, Alexei Davydov
  • SIGNALING FOR RESOURCE ALLOCATION AND SCHEDULING IN 5G-NR INTEGRATED ACCESS AND BACKHAUL
    Publication number: 20200359228
    Abstract: Embodiments of apparatus and methods for signaling for resource allocation and scheduling in 5G-NR integrated access and backhaul are generally described herein. In some embodiments, User Equipment configured for reporting a channel quality indicator (CQI) index in a channel state information (CSI) reference resource assumes a physical resource block (PRB) bundling size of two PRBs to derive the CQI index.
    Type: Application
    Filed: May 9, 2019
    Publication date: November 12, 2020
    Inventors: Alexander Sirotkin, Alexei Davydov, Andrey Chervyakov, Anthony Lee, Avik Sengupta, Bharat Shrestha, Candy Yiu, Chang Hong Shan, Dae Won Lee, Dawei Ying, Debdeep Chatterjee, Farid Adrangi, Gang Xiong, Geng Wu, Gregory Morozov, Hassan Ghozlan, Hong He, Honglei Miao, Hua Li, Jaemin Han, Jeongho Jeon, Jie Cui, Jing Zhu, Joey Chou, Joonbeom Kim, Joonyoung Cho, Kathiravetpillai Sivanesan, Lu Lu, May Wu, Naveen Palle, Puneet Jain, Qian Li, Richard C. Burbidge, Robert Zaus, Rui Huang, Satish Chandra Jha, Seau S. Lim, Sergey Panteleev, Song Noh, Yaser M. Fouad, Yi Guo, Yizhi Yao, Yongjun Kwak, Youn Hyoung Heo, Yuhan Zhou, Yujian Zhang, Yushu Zhang
  • TRANSPORT BLOCK SIZE (TBS) DETERMINATION IN FULL-DIMENSION MULTIPLE-INPUT MULTIPLE-OUTPUT (FD MIMO) NETWORKS
    Publication number: 20200351927
    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: Application
    Filed: July 20, 2020
    Publication date: November 5, 2020
    Inventors: Alexei Davydov, Sameer Pawar
  • Aperiodic CSI Reference Signals (CSI-RS) with Aperiodic Report Triggering
    Publication number: 20200351845
    Abstract: Dynamic transmission of non-zero power channel state information resource signals and interference measurement resources is described. Such dynamic transmission reduces or eliminates a need to buffer and store channel and interference measurements The described approach also reduces the overhead due to transmission of those resources and enables flexible time-domain channel state information requests.
    Type: Application
    Filed: May 25, 2020
    Publication date: November 5, 2020
    Inventors: Alexei Davydov, Vadim Sergeyev, Gregory Morozov, Ilya Bolotin
  • Channel state information (CSI) reporting for bandwidth parts
    Patent number: 10826589
    Abstract: Technology for a user equipment (UE) operable for channel state information (CSI) reporting for selected bandwidth parts is disclosed. The UE can be configured to decode CSI reporting parameters for one or more bandwidth parts (BWPs). The UE can be configured to calculate CSI for the one or more BWPs based on measurements from the one or more BWPs and the CSI reporting parameters for the one or more BWPs. The UE can be configured to generate one or more CSI reports for the one or more BWPs based on measurements from the one or more BWPs and the CSI reporting parameters for the one or more BWPs. The UE can be configured to encode the one or more CSI reports using the one or more BWPs.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: November 3, 2020
    Assignee: APPLE INC.
    Inventors: Alexei Davydov, Victor Sergeev, Dmitry Dikarev
  • Generation node-B (GNB), user equipment (UE) and methods for interleaving in multiple-input multiple-output (MIMO) arrangements
    Patent number: 10826571
    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: Grant
    Filed: December 15, 2017
    Date of Patent: November 3, 2020
    Assignee: Apple Inc.
    Inventors: Dae Won Lee, Seunghee Han, Ajit Nimbalker, Alexei Davydov, Paul C. Wei, Dmitry Dikarev
  • Group Based Beam Reporting and Channel State Information Reference Signal Configuration in New Radio Systems
    Publication number: 20200336188
    Abstract: Embodiments of the present disclosure describe methods and apparatuses for group based beam reporting and channel state information reference signal configuration in new radio systems.
    Type: Application
    Filed: September 10, 2018
    Publication date: October 22, 2020
    Inventors: Guotong Wang, Yushu Zhang, Alexei Davydov
  • Evolved Node-B and user equipment and methods for operation in a coverage enhancement mode
    Patent number: 10813071
    Abstract: Embodiments of an eNB to operate in accordance with a coverage enhancement mode are disclosed herein. The eNB may comprise hardware processing circuitry to, during a legacy sub-frame, transmit a system information block (SIB) in legacy SIB frequency resources according to a legacy SIB transmission format and refrain from transmission of channel state information reference signals (CSI-RS). The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first portion of the SIB in first SIB frequency resources included in the legacy SIB frequency resources. The hardware processing circuitry may be further to, during a first coverage enhancement sub-frame, transmit a first set of CSI-RS in first CSI-RS frequency resources that include at least a portion of the legacy SIB frequency resources.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: October 20, 2020
    Assignee: Apple Inc.
    Inventors: Seunghee Han, Gang Xiong, Alexei Davydov, Jong-Kae Fwu, Gi Wan Choi
  • Receive beam indication for 5G systems
    Patent number: 10812173
    Abstract: Systems and technologies described herein provide functionality for a cellular base station to dynamically indicate a reception (Rx) beam to be used by a user equipment (UE). The Rx beam can be indicated explicitly or implicitly. The UE can, for example, use the Rx beam for Physical Downlink Shared Channel (PDSCH) reception, Channel State Information Reference Signal (CSI-RS) measurements, and/or Channel State Information (CSI) calculation at the UE. Systems and technologies described herein are generally useful for systems that use multiple transmission (Tx) beams and/or that support Coordinated Multipoint (CoMP) transmission technology.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: October 20, 2020
    Assignee: APPLE INC.
    Inventors: Alexei Davydov, Hyejung Jung, Gregory Morozov
  • TRANSPORT BLOCK DECODING OPERATION FOR HYBRID TRANSMISSION TIME INTERVAL (TTI) LENGTHS IN WIRELESS COMMUNICATION SYSTEMS
    Publication number: 20200328848
    Abstract: Methods and architectures to reduce latency in next generation wireless networks such as LTE and/or new radio (NR), includes adjusting hybrid automatic repeat request (HARQ) techniques to selectively skip acknowledgements (ACKs) in various embodiments, and to configure one or more code block groups (CBG) designating code blocks for retransmission according to a code block group index bitmap present in received downlink control information (DCI).
    Type: Application
    Filed: April 27, 2018
    Publication date: October 15, 2020
    Inventors: Hong He, Alexei Davydov, Gang Xiong, Hwan-Joon Kwon, Jie Cui, Debdeep Chatterjee, Ajit Nimbalker, Joonyoung Cho, Dae Won Lee
  • Techniques in new radio (NR) user equipment (UE) demodulation over the air (OTA) tests
    Patent number: 10805017
    Abstract: Embodiments of the present disclosure describe methods, apparatuses, storage media, and systems for UE baseband-demodulation-performance tests in new radio (NR). An over-the-air (OTA) test environment with optimized signaling over the test interface by enabling feedback in the test system may achieve adequate baseband emulation of multipath utilizing NR reference signals. Various embodiments describe how to realize a test loop initialization and achieve better test certainty and controllability over OTA tests.
    Type: Grant
    Filed: October 1, 2018
    Date of Patent: October 13, 2020
    Assignee: Apple Inc.
    Inventors: Andrey Chervyakov, Alexei Davydov, Yang Tang, Anatoliy Ioffe
  • Beam failure recovery operation
    Patent number: 10784943
    Abstract: Described is an apparatus of a User Equipment (UE) operable to communicate with a fifth-generation Evolved Node-B (gNB) on a wireless network. The apparatus may comprise a first circuitry, a second circuitry, and a third circuitry. The first circuitry may be operable to detect a beam failure event. The second circuitry may be operable to generate a beam failure recovery request for transmission to the gNB, in response to the beam failure event. The third circuitry may be operable to monitor for Physical Downlink Control Channel (PDCCH) in a search space configured by the gNB, subsequent to a transmission of the beam failure recovery request.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: September 22, 2020
    Assignee: Apple, Inc.
    Inventors: Alexei Davydov, Guotong Wang, Yushu Zhang, Seunghee Han, Dae Won Lee, Gang Xiong
  • Time Density and Frequency Density Determination of Phase Tracking Reference Signals (PT-RS) in New Radio (NR) Systems
    Publication number: 20200296753
    Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. The UE may receive an information element (IE) that includes: a higher layer parameter that indicates a plurality of modulation and coding scheme (MCS) thresholds; and another higher layer parameter that includes a plurality of resource block (RB) thresholds. The UE may determine a time density of phase tracking reference signal (PT-RS) to be transmitted by the UE based at least partly on a comparison between a MCS and the plurality of MCS thresholds. The UE may determine a frequency density of the PT-RS based at least partly on a comparison between a scheduled bandwidth and the plurality of RB thresholds. The UE may encode the PT-RS for transmission in accordance with the determined time density and the determined frequency density.
    Type: Application
    Filed: May 28, 2020
    Publication date: September 17, 2020
    Inventors: Ajit Nimbalker, Alexei Davydov, Gang Xiong, Yushu Zhang
  • APPARATUS AND METHOD FOR UPLINK CONTROL SIGNALING IN MULTI-TRANSMISSION RECEPTION POINT OPERATION FOR NEW RADIO, AND DEMODULATION REFERENCE SIGNAL DESIGN
    Publication number: 20200281011
    Abstract: Techniques discussed herein can facilitate multi-transmission reception point (multi-TRP) operation for new radio (NR). One example apparatus may be employed at a user equipment (UE), and may comprise: an interface configured to enable the UE to communicate with two or more TRPs; and a processor that is configured to generate uplink control information (UCI) for each of the TRPs, schedule single or multiple uplink channels to carry the UCI, so that the UCI is transmitted individually or in combination to the TRPs via the interface, wherein the uplink channels comprise NR physical uplink control channel (PUCCH) and/or NR physical uplink shared channel (PUSCH). Techniques discussed herein also can facilitate demodulation reference signal design for short physical uplink control channel carrying more than 2-bit UCI for new radio.
    Type: Application
    Filed: September 10, 2018
    Publication date: September 3, 2020
    Inventors: Gang Xiong, Joonyoung Cho, Alexei Davydov, Seunghee Han, Yushu Zhang
  • CHANNEL STATE INFORMATION REPORT ON PHYSICAL UPLINK SHARED CHANNEL IN NEW RADIO
    Publication number: 20200274660
    Abstract: Methods and apparatuses for channel state information report on physical uplink shared channel in new radio are provided. An apparatus for a user equipment (UE), comprising: a processor, configured to generate a uplink (UL) signal data for a physical uplink shared channel (PUSCH) by using a resource mapping scheme; and a radio frequency (RF) interface, configured to receive the generated UL signal data from the processor, wherein at least a part of the resource mapping scheme is predefined, configured by higher layer signalling, or indicated in downlink control information (DCI).
    Type: Application
    Filed: September 10, 2018
    Publication date: August 27, 2020
    Inventors: Gang Xiong, Alexei Davydov, Seunghee Han, Yushu Zhang, Joonyoung Cho
  • METHOD AND APPARATUS FOR BEAM FAILURE RECOVERY
    Publication number: 20200275524
    Abstract: Provided herein are method and apparatus for beam recovery. An embodiment provides an apparatus for a user equipment (UE) including a radio frequency (RF) interface; and processing circuitry configured to: determine, in response to a beam failure, a channel for transmission of a beam failure recovery request as one of: a Physical Uplink Control Channel (PUCCH), a non-contention based Physical Random Access Channel (PRACH), and a contention based Physical Random Access Channel (PRACH); and encode the beam failure recovery request for transmission to an access node via the determined channel using the RF interface. At least some embodiments allow for transmission of a beam failure recovery request for beam recovery, allow for beam failure detection or new Tx beam identification, and allow for determining whether to configure a scheduling delay between a PDCCH and a PDSCH.
    Type: Application
    Filed: September 10, 2018
    Publication date: August 27, 2020
    Inventors: Guotong Wang, Yushu Zhang, Alexei Davydov
  • METHOD AND APPARATUS FOR CONFIGURATION OF REFERENCE SIGNAL
    Publication number: 20200275523
    Abstract: Provided herein are method and apparatus for configuration of a Reference Signal (RS) and a Tracking Reference Signal (TRS). An embodiment provides an apparatus for an access node including a radio frequency (RF) interface; and processing circuitry configured to: determine a time density of a Tracking Reference Signal (TRS) based on a subcarrier spacing of a bandwidth part (BWP) in a current component carrier for a user equipment (UE); determine a frequency density of the TRS based on a bandwidth of the TRS; determine a quasi co-location (QCL) relationship of the TRS; and encode the TRS based on at least one of the time density, the frequency density and the QCL relationship for transmission to the UE via the RF interface. At least some embodiments allow for beam management, and allow for fine time and/or frequency offset tracking.
    Type: Application
    Filed: September 10, 2018
    Publication date: August 27, 2020
    Inventors: Yushu Zhang, Gang Xiong, Guotong Wang, Alexei Davydov
  • Initialization of pseudo noise sequences for reference signals and data scrambling
    Patent number: 10742457
    Abstract: Embodiments of the present disclosure describe apparatuses, systems, and methods for initialization of pseudo noise (PN) sequences for reference signals and data scrambling. Some embodiments may be to initialize the first M-sequence of the PN sequence with a fixed value; and initialize the second M-sequence of the PN sequence with a compressed value. Some embodiments may be to initialize the first M-sequence of the PN sequence with a fixed value; initialize the second M-sequence of the PN sequence with a part of the initialization parameters; and shift the PN sequence by another part of the initialization parameters. Some embodiments may be to initialize the first M-sequence of the PN sequence with a part of the initialization parameters; and initialize the second M-sequence of the PN sequence with another part of the initialization parameters. The embodiments may lead to a more efficient hardware design.
    Type: Grant
    Filed: September 11, 2018
    Date of Patent: August 11, 2020
    Assignee: Apple Inc.
    Inventors: Yongjun Kwak, Avik Sengupta, Dae Won Lee, Alexei Davydov, Seunghee Han, Gregory Morozov, Sameer Pawar
  • Full Dimension Multiple Input Multiple Output Communication Systems and Methods
    Publication number: 20200252109
    Abstract: Apparatuses and methods are disclosed for supporting a UE in reporting of a selection of an NZP CSI-RS resource to an eNB supporting FD-MIMO communication. Each NZP CSI-RS resource is associated with a unique NZP CRI (or ‘Beam Index’) on a given serving cell. The UE may select an NZP CSI-RS resource for CSI calculation and reporting to the eNB based on processed CSI-RS signals received at an antenna of the UE from the eNB of a serving cell of the UE based on a CSI-RS resource configuration for the UE signaled from the eNB. The UE may report a CRI and a CSI of the selected NZP CSI-RS resource to the eNB of the serving cell of the UE based on a CRI reporting configuration of the UE signaled from the eNB.
    Type: Application
    Filed: December 30, 2019
    Publication date: August 6, 2020
    Inventor: Alexei Davydov