公开(公告)号：US11405833B2

公开(公告)日：2022-08-02

申请号：US16464768

申请日：2018-08-08

Applicant: Apple Inc.

Inventor： Candy Yiu ,  Kyeongin Jeong ,  Ansab Ali ,  Dae Won Lee ,  Yongjun Kwak

IPC: H04W36/00 ,  H04B17/318 ,  H04B17/336 ,  H04L1/00 ,  H04L5/00 ,  H04W24/10 ,  H04W36/08 ,  H04W56/00 ,  H04W74/08 ,  H04W74/00

Abstract: Embodiments may be directed to techniques to process a handover command message received from a source next generation node B (gNB), the handover command message comprising random-access channel (RACH) configuration information and determine at least one of dedicated RACH resources and common RACH resources to access a target gNB based on the RACH configuration information. Embodiments also include techniques to cause, via an interface, one or more attempts to access the target gNB utilizing at least one of the dedicated RACH resources and the common RACH resources.

公开(公告)号：US11375475B2

公开(公告)日：2022-06-28

申请号：US16632416

申请日：2018-07-26

Applicant: Apple Inc.

Inventor： Dae Won Lee ,  Seunghee Han ,  Gregory Vladimirovich Morozov ,  Alexei Davydov ,  Yongjun Kwak

IPC: H04W72/00 ,  H04J11/00 ,  H04L1/00 ,  H04L1/16 ,  H04W56/00 ,  H04W72/04

Abstract: A user equipment (UE) can include processing circuitry configured to decode physical broadcast channel (PBCH) information received from a base station (BS). The decoded PBCH information includes a scrambled PBCH payload and an unscrambled bit sequence. A scrambling sequence is generated based on time information signaling within the unscrambled bit sequence. The scrambled PBCH payload is de-scrambled using the scrambling sequence, to obtain master information block (MIB) information. System information block (SIB) information is decoded based on the MIB information. The decoded PBCH information includes cyclic redundancy check (CRC) information. The scrambled PBCH payload and the unscrambled bit sequence can be verified based on the CRC information. The time information signaling includes one or more bits of a system frame number (SFN).

公开(公告)号：US11190382B2

公开(公告)日：2021-11-30

申请号：US16500971

申请日：2018-05-03

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Debdeep Chatterjee ,  Yushu Zhang ,  Alexei Davydov ,  Wook Bong Lee ,  Dae Won Lee ,  Sameer Pawar ,  Jeongho Jeon ,  Hong He

IPC: H04L27/26 ,  H04L5/00

Abstract: Techniques discussed herein can facilitate RS (Reference Signal) sequence generation and mapping, and/or precoder assignment, for NR (New Radio). One example embodiment employable at a NR wireless communication device comprises processing circuitry configured to: generate one or more PN (Pseudo Noise) sequences based at least in part on an initial state of a PN generator; extract, for each PRB (Physical Resource Block) of one or more PRBs, an associated portion of an associated PN sequence of the one or more PN sequences, based at least in part on a reference subcarrier index, independent of a bandwidth part configuration and of a maximum supported number of PRBs; and generate, for each PRB of the one or more PRBs, an associated set of RS(s) for that PRB based at least in part on the extracted associated portion of the associated PN sequence for that PRB.

公开(公告)号：US11121768B2

公开(公告)日：2021-09-14

申请号：US16349960

申请日：2018-01-04

Applicant: APPLE INC.

Inventor： Dae Won Lee ,  Seunghee Han ,  Gregory V. Morozov ,  Alexei Davydov ,  Hong He

IPC: H04J3/00 ,  H04B7/26 ,  H04L27/26 ,  H04W56/00

Abstract: Systems and methods for synchronizing communications between a User Equipment (UE) and Base Station (BS) using a synchronization signal structure. The synchronization signal structure can include a sequence of Synchronization Signals (SS) 5 including repetitions of a synchronization signal burst set. The synchronization signal burst set can include a plurality of synchronization signal bursts. The synchronization signal bursts can include a plurality of synchronization signal blocks, wherein the synchronization signal blocks can include a plurality of Synchronization Signals (SS).

公开(公告)号：US11063652B2

公开(公告)日：2021-07-13

申请号：US16487155

申请日：2018-03-05

Applicant: Apple Inc.

Inventor： Gang Xiong ,  Yushu Zhang ,  Alexei Davydov ,  Wook Bong Lee ,  Dae Won Lee ,  Guotong Wang

IPC: H04B7/06 ,  H04B1/7143 ,  H04B7/0413 ,  H04B7/08 ,  H04J13/00 ,  H04L5/00 ,  H04W48/16 ,  H04W72/04 ,  H04W72/08 ,  H04B1/715

Abstract: Techniques discussed herein can facilitate maintenance and/or recovery of BPL(s) (Beam Pair Link(s)). Various embodiments can employ aspects discussed herein can one or more of enable interference randomization for beam/link recovery signal(s) or reduce the overhead of UL (Uplink) beam management RS (Reference Signal(s)). Various embodiments can comprise UE(s) (User Equipment(s)) that can receive configuration signaling configuring the UE(s) to one or more of apply interference randomization to a beam/link recovery signal and/or generate a SR (Scheduling Request) channel for beam maintenance having reduced overhead and can transmit the beam/link recovery signal and/or SR channel. Additional embodiments can comprise gNB(s) (next Generation NodeB(s)) that can configure UE(s) for beam maintenance and/or recovery techniques discussed herein.

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：US10925066B2

公开(公告)日：2021-02-16

申请号：US16479556

申请日：2018-05-04

Applicant: APPLE INC.

Inventor： Alexei Davydov ,  Dae Won Lee ,  Gang Xiong ,  Yushu Zhang ,  Wook Bong Lee

IPC: H04W72/04 ,  H04B7/08 ,  H04L5/00 ,  H04W56/00 ,  H04W72/02

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.

公开(公告)号：US12192038B2

公开(公告)日：2025-01-07

申请号：US17418150

申请日：2020-03-13

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Alexei Davydov ,  Gregory Morozov ,  Guotong Wang ,  Dae Won Lee ,  Gang Xiong ,  Sameer Pawar ,  Jie Zhu

IPC: H04J13/00 ,  H04L5/00 ,  H04L27/26

Abstract: Communication in a wireless network using a phase-tracking reference signal (PT-RS) for orthogonal frequency division multiplexing (OFDM) includes determining one or more PT-RS groups of adjacent subcarriers in a resource allocation for a physical uplink shared channel (PUSCH) or a physical downlink shared channel (PDSCH), encoding data to be transmitted by the PUSCH or the PDSCH in data subcarriers within the resource allocation for the PUSCH or the PDSCH, and encoding phase-tracking reference signals within the one or more PT-RS groups of adjacent subcarriers.

公开(公告)号：US20240397548A1

公开(公告)日：2024-11-28

申请号：US18789394

申请日：2024-07-30

Applicant: Apple Inc.

Inventor： Yongjun Kwak ,  Lopamudra Kundu ,  Bishwarup Mondal ,  Dae Won Lee

IPC: H04W74/00 ,  H04W74/0808

Abstract: Devices and methods of providing channel occupancy time (COT) are described. After a gNB acquires an unlicensed channel for a COT, the gNB indicates the COT length to a UE using a PDCCH having a DCI formed in accordance with DCI format 2_0. The slot format of the last slot of the COT is indicated using a reserved slot format indicator that is reserved to indicate the end of the COT. The reserved slot format indicator indicates a last slot format of available slot formats of DCI format 2_0. Dummy bits fill the DCI after the reserved slot format indicator. Alternatively, to indicate the COT length, a COT field dedicated to providing the COT is used in the DCI or the CRC is masked using a slot format indication Radio Network Temporary Identifier.