公开(公告)号：US11991111B2

公开(公告)日：2024-05-21

申请号：US17421791

申请日：2020-01-11

Applicant: Apple Inc.

Inventor： Bishwarup Saso Mondal ,  Prerana Rane ,  Yongjun Kwak ,  Daewon Lee

IPC: H04L5/00 ,  H04B7/06 ,  H04W72/044

CPC classification number: H04L5/005 ,  H04B7/0695 ,  H04L5/0078 ,  H04W72/044

Abstract: Disclosed herein are system, method, and computer program product embodiments for performing Synchronization Single Block (SSB) transmission using a number of SSB beams. An embodiment operates by determining a SSB index for a SSB based on a candidate position in a set of candidate positions and the number of SSB beams. The embodiment determines a shift value for the SSB index based on the candidate position and the number of SSB beams. The embodiment determines a frame timing for the SSB based the SSB index and the shift value for the SSB index. The embodiment then transmits, by radio front end circuitry, the SSB to a user equipment (UE) based on the frame timing for the SSB.

公开(公告)号：US20240172147A1

公开(公告)日：2024-05-23

申请号：US18534181

申请日：2023-12-08

Applicant: APPLE INC.

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

IPC: H04W56/00 ,  H04L27/26

CPC classification number: H04W56/001 ,  H04L27/26025 ,  H04L27/2607

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：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：US12185262B2

公开(公告)日：2024-12-31

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.