公开(公告)号：US20220191810A1

公开(公告)日：2022-06-16

申请号：US17593080

申请日：2020-05-13

Applicant: APPLE INC.

Inventor： Yang Tang ,  Dae Won Lee ,  Prerana Rane ,  Bishwarup Mondal ,  Jiwoo Kim ,  Yongjun Kwak ,  Suenghee Han

IPC: H04W56/00 ,  H04L27/26

Abstract: Systems and methods for determining channel raster(s) and synchronization signal raster(s) for New Radio (NR) unlicensed spectrum are disclosed herein. For each of a plurality of data objects an NR channel raster position is determined using Absolute Radio Frequency Channel Number (NR-ARFCN) numbers. For each corresponding NR channel, Global Synchronization Channel Numbers (GSCNs), a number of Physical Resource Blocks (PRBs) based on channel subcarrier spacing (SCS), NR channel raster position placement, channel edges, synchronization signal and physical broadcast channel (SSB) edges, and an SSB raster position are calculated. The plurality of data objects may then be down selected based on e.g., corresponding Long Term Evolution (LTE) channel raster positions and/or entries of a second plurality of data objects calculated for NR channels that use a second SCS.

公开(公告)号：US20220150802A1

公开(公告)日：2022-05-12

申请号：US17583929

申请日：2022-01-25

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Carlos Aldana ,  Bishwarup Mondal ,  Jeongho Jeon ,  Dae Won Lee

IPC: H04W48/10 ,  H04W56/00 ,  H04L5/00

Abstract: Systems and methods of providing timing information for initial access in an unlicensed band are described. A UE monitors a new radio discovery signal (NRDS-U) window in an unlicensed band for a DRS transmission that is constrained to be transmitted within the NRDS-U window. The UE determines initial access information, including an offset that indicates when the DRS transmission occurs within the NRDS-U window, and engages in initial access dependent on the offset. The offset is from a radio frame or half radio frame boundary or the start of the NRDS-U window. The offset is indicated in three least/most significant bits an SSB index or from an sl-offset field in a MIB of the SSB. When the base station uses a DFS channel, the base station transmits a periodic signal to emulate a radar signal.

公开(公告)号：US20220103409A1

公开(公告)日：2022-03-31

申请号：US17531879

申请日：2021-11-22

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: 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.

公开(公告)号：US20220060361A1

公开(公告)日：2022-02-24

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: H04L27/26 ,  H04L5/00 ,  H04J13/00

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：US11259238B2

公开(公告)日：2022-02-22

申请号：US16515704

申请日：2019-07-18

Applicant: Apple Inc.

Inventor： Salvatore Talarico ,  Carlos Aldana ,  Bishwarup Mondal ,  Jeongho Jeon ,  Dae Won Lee

IPC: H04W48/16 ,  H04L5/00 ,  H04W56/00 ,  H04W72/00

Abstract: Systems and methods of providing timing information for initial access in an unlicensed band are described. A UE monitors a new radio discovery signal (NRDS-U) window in an unlicensed band for a DRS transmission that is constrained to be transmitted within the NRDS-U window. The UE determines initial access information, including an offset that indicates when the DRS transmission occurs within the NRDS-U window, and engages in initial access dependent on the offset. The offset is from a radio frame or half radio frame boundary or the start of the NRDS-U window. The offset is indicated in three least/most significant bits an SSB index or from an sl-offset field in a MIB of the SSB. When the base station uses a DFS channel, the base station transmits a periodic signal to emulate a radar signal.

公开(公告)号：US11184056B2

公开(公告)日：2021-11-23

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: H04L5/00 ,  H04B7/0413 ,  H04L1/00

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：US11140749B2

公开(公告)日：2021-10-05

申请号：US16349556

申请日：2017-12-12

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  Alexei Davydov ,  Wook Bong Lee ,  Dae Won Lee ,  Seunghee Han

IPC: H04W88/06 ,  H04B7/024 ,  H04B7/0417 ,  H04B7/0456 ,  H04B7/06 ,  H04L5/00

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.

公开(公告)号：US11122516B2

公开(公告)日：2021-09-14

申请号：US16407952

申请日：2019-05-09

Applicant: Apple Inc.

Inventor： Yushu Zhang ,  RongZhen Yang ,  Yuan Zhu ,  Gang Xiong ,  Wenting Chang ,  Guotong Wang ,  Dae Won Lee ,  Yongjun Kwak

IPC: H04W52/14 ,  H04W52/24 ,  H04W52/32 ,  H04B7/06 ,  H04B7/0404

Abstract: Uplink Transmission Power Control (TPC) techniques configured to compensate for variations in path loss and/or interference on a plurality of uplink transmission beams.

公开(公告)号：US11089651B2

公开(公告)日：2021-08-10

申请号：US16376333

申请日：2019-04-05

Applicant: Apple Inc.

Inventor： Yongjun Kwak ,  Dae Won Lee ,  Gregory V. Morozov ,  Seunghee Han ,  Hong He ,  Candy Yiu ,  Kyeongin Jeong

IPC: H04W88/02 ,  H04W74/08 ,  H04W72/12 ,  H04W72/04 ,  H04L5/00 ,  H04L1/00 ,  H04W56/00 ,  H04W76/27 ,  H04L1/18 ,  H04W80/02 ,  H04W52/00

Abstract: An apparatus is configured for a user equipment (UE) device. The apparatus comprises baseband circuitry and/or application circuitry which includes a radio frequency (RF) interface and one or more processors. The one or more processors are configured to generate a physical random access channel (PRACH) within a slot at a medium access control (MAC) layer, generate a scheduling request (SR) within the slot at the MAC layer, determine a PRACH prioritization and an SR prioritization at a physical layer according to a prioritization rule; and provide the PRACH and the SR to the RF interface for transmission according to the prioritization rule.

公开(公告)号：US11071172B2

公开(公告)日：2021-07-20

申请号：US16349251

申请日：2017-12-29

Applicant: APPLE INC.

Inventor： Hong He ,  Gang Xiong ,  Hwan-Joon Kwon ,  Alexei Davydov ,  Dae Won Lee

IPC: H04W72/04 ,  H04L5/00 ,  H04W88/06 ,  H04L1/16 ,  H04L27/26 ,  H04W80/02 ,  H04W80/08 ,  H04W52/02

Abstract: Technology for a user equipment (UE) configured for bandwidth adaptation (BWA) is disclosed. The UE can decode resource allocation information for a first radio frequency (RF) bandwidth including a primary subband available to the UE for data communication. Th 5 e UE can decode resource allocation information for a second RF bandwidth, wherein the second RF bandwidth comprises the first RF bandwidth and at least one secondary subband available to the UE for data communication. The UE can encode data for transmission to a next generation NodeB (gNB) using resources allocated for the second RF bandwidth in the primary subband and the secondary subband. The UE 10 can have a memory interface configured to send to a memory the resource allocation information for the first RF bandwidth and the second RF bandwidth.