公开(公告)号：US20200296753A1

公开(公告)日：2020-09-17

申请号：US16886256

申请日：2020-05-28

Applicant: Apple Inc.

Inventor： Ajit Nimbalker ,  Alexei Davydov ,  Gang Xiong ,  Yushu Zhang

IPC: H04W72/12 ,  H04W72/14 ,  H04L5/00 ,  H04L1/18 ,  H04L27/26

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.

公开(公告)号：US11824559B2

公开(公告)日：2023-11-21

申请号：US18094068

申请日：2023-01-06

Applicant: Apple Inc.

Inventor： Dmitry Dikarev ,  Grigory Ermolaev ,  Ajit Nimbalker ,  Alexei Davydov ,  Ashwin Chandrasekaran ,  Sathishkumar Chellakuttigounder Kulandaivel

IPC: H03M13/13 ,  H03M13/09 ,  H03M13/27 ,  H03M13/00

CPC classification number: H03M13/13 ,  H03M13/09 ,  H03M13/2703 ,  H03M13/2789 ,  H03M13/6356

Abstract: Techniques discussed herein can facilitate polar coding and decoding for NR (New Radio) systems. Various embodiments discussed herein can employ polar coding and/or decoding at UE(s) (User Equipment(s)) and/or gNB(s) (next generation Node B(s)). One example embodiment employable at a UE can comprise processing circuitry configured to determine one or more thresholds for code block segmentation, wherein the one or more thresholds for code block segmentation comprise one or more of a payload threshold (Kseg) or a code rate threshold (Rseg); determine to perform code block segmentation based on the one or more thresholds and at least one of a current payload (K) of an information block or a current code rate (R) for the information block; segment the information block into a plurality of segments; and encode each segment of the plurality of segments via a polar encoder with a code size (N).

公开(公告)号：US11700621B2

公开(公告)日：2023-07-11

申请号：US17949414

申请日：2022-09-21

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Hong He ,  Ajit Nimbalker ,  Joonyoung Cho ,  Dae Won Lee

IPC: H04W72/23 ,  H04L1/1829 ,  H04L5/00 ,  H04W72/0453 ,  H04W72/21

CPC classification number: H04W72/23 ,  H04L1/1854 ,  H04L1/1861 ,  H04L5/0055 ,  H04W72/0453 ,  H04W72/21

Abstract: Techniques are described relating to hybrid automatic repeat request acknowledgement (HARQ-ACK) feedback using a HARQ-ACK aggregation window. A User Equipment (UE) may receive control information (e.g., downlink control information (DCI) or radio resource control (RRC) signaling) from a base station including HARQ-ACK codebook information. The HARQ-ACK codebook information may include information on a size of a HARQ-ACK aggregation window. The UE may decode physical downlink shared channel (PDSCH) transmissions and encode corresponding HARQ-ACK feedback using the HARQ-ACK aggregation window based on the control signaling.

公开(公告)号：US11637656B2

公开(公告)日：2023-04-25

申请号：US17197596

申请日：2021-03-10

Applicant: Apple Inc.

Inventor： Debdeep Chatterjee ,  Hong He ,  Gang Xiong ,  Ajit Nimbalker ,  Dmitry Dikarev ,  Yongjun Kwak

IPC: H03M13/00 ,  H04L1/00 ,  H04W72/04 ,  H04L5/00

Abstract: Provided herein are method and apparatus for channel coding in the fifth Generation (5G) New Radio (NR) system. An embodiment provides an apparatus for a Next Generation NodeB (gNB), including circuitry, which is configured to: generate Downlink Control Information (DCI) payload for a NR-Physical Downlink Control Channel (NR-PDCCH); attach Cyclic Redundancy Check (CRC) to the DCI payload; mask the CRC with an Radio Network Temporary Identifier (RNTI) using a bitwise modulus 2 addition operation, wherein the number of bits for the RNTI is different from the number of bits for the CRC; and perform polar encoding for the DCI payload with the masked CRC.

公开(公告)号：US10999010B2

公开(公告)日：2021-05-04

申请号：US16747438

申请日：2020-01-20

Applicant: Apple Inc.

Inventor： Ajit Nimbalker ,  Tao Xu

IPC: H03M13/00 ,  H04L1/00 ,  H04L1/18 ,  H03M13/11

Abstract: Technology for a transmitter operable to perform data transmissions using low density parity check (LDPC) codes is disclosed. The transmitter can determine soft buffer information (Nsoft) for a receiver. The transmitter can determine a soft buffer partition per HARQ process (NIR) for the UE. The transmitter can obtain, for a transport block, a number of code block segments (C). The transmitter can select a shift size value (z). The transmitter can determine an amount of soft buffer available for the code block segments (Ncb) based on NIR, C, and z. The transmitter can encode the code block segments based on an LDPC coding scheme to obtain encoded parity bits. The transmitter can select a subset of the encoded parity bits based on the determined amount of soft buffer associated with the code block segments.

公开(公告)号：US10939321B2

公开(公告)日：2021-03-02

申请号：US16126999

申请日：2018-09-10

Applicant: APPLE INC.

Inventor： Alexei Davydov ,  Seung Hee Han ,  Debdeep Chatterjee ,  Hong He ,  Gregory V. Morozov ,  Ajit Nimbalker ,  Fatemeh Hamidi-Sepehr ,  Dae Won Lee ,  Yongjun Kwak

IPC: H04W28/02

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.

公开(公告)号：US20210050887A1

公开(公告)日：2021-02-18

申请号：US17087444

申请日：2020-11-02

Applicant: Apple Inc.

Inventor： Dae Won Lee ,  Seunghee Han ,  Ajit Nimbalker ,  Alexei Davydov ,  Paul C. Wei ,  Dmitry Dikarev

IPC: H04B7/0413 ,  H04L1/00 ,  H04L5/00

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.

公开(公告)号：US10790932B2

公开(公告)日：2020-09-29

申请号：US16245825

申请日：2019-01-11

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 ,  H04W72/04

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 to allow encoding of all parts of CSI into one codeword without payload ambiguity.

公开(公告)号：US20200295899A1

公开(公告)日：2020-09-17

申请号：US16890558

申请日：2020-06-02

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Yushu Zhang ,  Ajit Nimbalker ,  Joonyoung Cho ,  Lopamudra Kundu

IPC: H04L5/00 ,  H04L29/08 ,  H04B7/06 ,  H04L27/26 ,  H04B7/0456

Abstract: Embodiments of a User Equipment (UE), Next Generation Node-B (gNB) and methods of communication are generally described herein. A channel state information (CSI) report may include a CSI part 1 transmission and may be configurable to include a CSI part 2 transmission. The UE may determine a first number of coded modulation symbols per layer to be used for the CSI part 1 transmission on a physical uplink shared channel (PUSCH) without uplink shared channel (UL-SCH) data. The first number of coded modulation symbols per layer may be determined as: a minimum of a first term and a second term if the CSI report includes the CSI part 2 transmission; and the second term if the CSI report does not include the CSI part 2 transmission.

公开(公告)号：US12149385B2

公开(公告)日：2024-11-19

申请号：US18219261

申请日：2023-07-07

Applicant: Apple Inc.

Inventor： Debdeep Chatterjee ,  Sergey Panteleev ,  Gang Xiong ,  Ajit Nimbalker ,  Hong He

IPC: H04W76/27 ,  H04L5/00 ,  H04L25/02 ,  H04W72/1273 ,  H04W76/11 ,  H04W80/02 ,  H04W72/0446 ,  H04W72/23

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.