公开(公告)号：US20230239188A1

公开(公告)日：2023-07-27

申请号：US18129263

申请日：2023-03-31

Applicant: Apple Inc.

Inventor： Alexei Vladimirovich Davydov ,  Guotong Wang ,  Gang Xiong ,  Yushu Zhang

IPC: H04L27/26 ,  H04L5/00 ,  H04L1/00

CPC classification number: H04L27/2613 ,  H04L1/1819 ,  H04L27/2675 ,  H04L5/0044 ,  H04W72/23 ,  H04L5/0064 ,  H04L1/0003 ,  H04L5/0048 ,  H04L27/2636 ,  H04L5/0007 ,  H04L27/26134

Abstract: A user equipment (UE) can include processing circuitry configured to decode downlink control information (DCI) from a base station, the DCI including a modulation coding scheme (MCS) index and physical uplink shared channel (PUSCH) allocation. A demodulation reference signal (DMRS) is encoded for transmission to the base station within a plurality of DMRS symbols based on the PUSCH allocation. A phase tracking reference signal (PT-RS) time domain density is determined based on the MCS index and a number count of the DM-RS symbols for the DM-RS transmission. The PTRS is encoded for transmission using a plurality of PT-RS symbols based on the determined time domain density. The plurality of symbols includes one or both of front-loaded DM-RS symbols and additional DM-RS symbols.

公开(公告)号：US11290230B2

公开(公告)日：2022-03-29

申请号：US16625149

申请日：2018-06-20

Applicant: Apple Inc.

Inventor： Debdeep Chatterjee ,  Alexei Vladimirovich Davydov ,  Seunghee Han ,  Jeongho Jeon ,  Sameer Pawar ,  Avik Sengupta ,  Guotong Wang ,  Yushu Zhang

IPC: H04L5/00 ,  H04L1/18

Abstract: A user equipment (UE) can include processing circuitry configured to decode control information of a physical downlink control channel (PDCCH) received via a resource within a control resource set (CORESET) occupying a subset of a plurality of OFDM symbols within a slot. At least one of the symbols in the subset coincides with a pre-defined symbol location associated with a demodulation reference signal (DM-RS) of a PDSCH. The DM-RS can be detected within the slot, the DM-RS starting at a symbol location that is shifted from the pre-defined symbol location and following the subset of symbols. Downlink data scheduled by the PDCCH and received via the PDSCH can be decoded, where the decoding is based on the detected DM-RS.

公开(公告)号：US10897776B2

公开(公告)日：2021-01-19

申请号：US16346335

申请日：2017-10-26

Applicant: Apple Inc.

Inventor： Hong He ,  Gang Xiong ,  Hwan-Joon Kwon ,  Seunghee Han ,  Alexei Vladimirovich Davydov

IPC: H04W72/12 ,  H04W76/28 ,  H04B7/26 ,  H04L5/00

Abstract: Downlink control information techniques for wireless communications with shorter TTI (S-TTI) length are disclosed. An apparatus of a user equipment (UE) can include processing circuitry configured to decode signaling indicating a duration of a time window, the time window comprising a plurality of S-TTIs forming a single TTI. Absence of a discontinuous reception (DRX) indicator is detected within control information received within a first S-TTI of the plurality of S-TTIs. Upon detecting the absence of the DRX indicator within received control information, a S-PDCCH within each of the plurality of S-TTIs is monitored during the duration. Scheduling information received via the S-PDCCH within one of the plurality of S-TTIs is decoded, and data is encoded for transmission on a shared data channel based on the scheduling information.

公开(公告)号：US12238029B2

公开(公告)日：2025-02-25

申请号：US18212635

申请日：2023-06-21

Applicant: Apple Inc.

Inventor： Debdeep Chatterjee ,  Alexei Vladimirovich Davydov ,  Seung Hee Han ,  Jeongho Jeon ,  Sameer Pawar ,  Avik Sengupta ,  Guotong Wang ,  Yushu Zhang

IPC: H04L5/00 ,  H04L1/1812

Abstract: A user equipment (UE) can include processing circuitry configured to decode control information of a physical downlink control channel (PDCCH) received via a resource within a control resource set (CORESET) occupying a subset of a plurality of OFDM symbols within a slot. At least one of the symbols in the subset coincides with a pre-defined symbol location associated with a demodulation reference signal (DM-RS) of a PDSCII. The DM-RS can be detected within the slot, the DM-RS starting at a symbol location that is shifted from the pre-defined symbol location and following the subset of symbols. Downlink data scheduled by the PDCCH and received via the PDSCH can be decoded, where the decoding is based on the detected DM-RS.

公开(公告)号：US12150213B2

公开(公告)日：2024-11-19

申请号：US17830016

申请日：2022-06-01

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Yushu Zhang ,  Dae Won Lee ,  Alexei Vladimirovich Davydov ,  Seunghee Han ,  Jie Zhu ,  Dmitry Belov ,  Debdeep Chatterjee ,  Andrey Chervyakov ,  Fatemeh Hamidi-Sepehr ,  Hong He ,  Toufiqul Islam ,  Jeongho Jeon ,  Alexey Vladimirovich Khoryaev ,  Lopamudra Kundu ,  Yongjun Kwak ,  Jose Armando Oviedo ,  Sergey Panteleev ,  Mikhail Shilov ,  Sergey Sosnin ,  Salvatore Talarico ,  Jan Zaleski

IPC: H04W88/06 ,  H04J13/00 ,  H04L5/00 ,  H04L27/26 ,  H04W72/23 ,  H04W76/27

Abstract: A user equipment (UE) can include processing circuitry coupled to memory. To configure the UE for New Radio (NR) communications above a 52.6 GHz carrier frequency, the processing circuitry is to decode radio resource control (RRC) signaling to obtain a cyclic shift value in time domain. The cyclic shift value is associated with a demodulation reference signal (DM-RS) antenna port (AP) of a plurality of available DM-RS APs. A single carrier based waveform DM-RS sequence corresponding to the DM-RS AP is generated using a base sequence and the cyclic shift value. The single carrier based waveform DM-RS sequence is encoded with uplink data for transmission to a base station using a physical uplink shared channel (PUSCH) using a carrier above the 52.6 GHz carrier frequency.

公开(公告)号：US11115241B2

公开(公告)日：2021-09-07

申请号：US16496753

申请日：2018-03-23

Applicant: Apple Inc.

Inventor： Alexei Vladimirovich Davydov

IPC: H04W4/00 ,  H04L25/02 ,  H04B7/06 ,  H04L5/00 ,  H04W76/27

Abstract: Described herein is a channel state information (CSI) calculation method for non-coherent joint transmission by using a dependency between CSI reported for each CSI. In one embodiment, configuration of CSI reporting is such that CSI calculated for one CSI process (denoted as the reference CSI process) can be used for interference calculation for another CSI process (denoted as the dependent CSI process).

公开(公告)号：US11026233B2

公开(公告)日：2021-06-01

申请号：US16447584

申请日：2019-06-20

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Zhibin Yu ,  Alexei Vladimirovich Davydov ,  Gang Xiong ,  Guotong Wang

IPC: H04W72/04 ,  H04W84/04

Abstract: A user equipment (UE) can include processing circuitry coupled to memory. To configure the UE for New Radio (NR) communications, the processing circuitry is to decode a plurality of CSI-RSs received from a base station on a corresponding plurality of beams. DCI received via a PDCCH is decoded, the DCI activating reporting of beam emissions information associated with the plurality of beams. A CSI report is encoded with the beam emissions information for transmission to the base station, the beam emissions information comprising a flag for each beam of the plurality of beams indicating whether the beam can be used for uplink beam indication. Configuration signaling is decoded with the uplink beam indication, the uplink beam indication based on the beam emissions information and including a CRI of a selected beam of the plurality of beams. Data is encoded for transmission via an uplink channel using the selected beam.

公开(公告)号：US10931425B2

公开(公告)日：2021-02-23

申请号：US15759034

申请日：2015-12-23

Applicant: Apple Inc.

Inventor： Hong He ,  Seunghee Han ,  Alexei Vladimirovich Davydov ,  Gang Xiong

IPC: H04L5/00 ,  H04L1/16 ,  H04L1/18 ,  H04L1/00

Abstract: Future LTE systems will support massive carrier aggregation that necessitates transmission of a large number of acknowledgement signals (HARQ-ACKs) in response to downlink data transmitted over multiple component carriers. Described herein are methods for HARQ-ACK transmission over the PUCCH (physical uplink control channel) that relate to HARQ-ACK codebook size adaptation, DAI (downlink assignment index) design options, HARQ-ACK bit channel coding and interleaving, and, frequency hopping configuration for a new PUCCH format.

公开(公告)号：US10925116B2

公开(公告)日：2021-02-16

申请号：US16449294

申请日：2019-06-21

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Gang Xiong ,  Guotong Wang ,  Alexei Vladimirovich Davydov

IPC: H04W88/06 ,  H04B7/06 ,  H04W72/12 ,  H04W72/04 ,  H04W72/14 ,  H04W80/02 ,  H04L25/02 ,  H04L5/00 ,  H04W76/27

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.

公开(公告)号：US20200382239A1

公开(公告)日：2020-12-03

申请号：US16986616

申请日：2020-08-06

Applicant: Apple Inc.

Inventor： Dmitry Dikarev ,  Victor Sergeev ,  Ajit Nimbalker ,  Alexei Vladimirovich Davydov ,  Gregory Ermolaev

IPC: H04L1/00 ,  H04W28/06 ,  H04B7/0456 ,  H04B7/06 ,  H03M13/13

Abstract: Described herein are methods and apparatus for jointly encoding components of a a channel state information (CSI) report into a single codeword. Padding bits are added to equalize payload size for different CRI/RI cases and yo allow encoding of all parts of CSI into one codeword without payload ambiguity.