公开(公告)号：US11956059B2

公开(公告)日：2024-04-09

申请号：US17944935

申请日：2022-09-14

Applicant: Apple Inc.

Inventor： Stefan Meyer ,  Jan K Ellenbeck ,  Bertram R Gunzelmann

IPC: H04B7/145 ,  H04B7/0426 ,  H04B7/06

CPC classification number: H04B7/145 ,  H04B7/043 ,  H04B7/0617

Abstract: A communication system may include an access point (AP), a user equipment (UE), and a communication path between the AP and the UE having a series of reconfigurable intelligent surfaces (RIS's). Each RIS may have a first beam pointing to a previous node and a second beam pointing to a next node in the communication path. Beams of routing RIS's and a beam from an end user RIS towards a last routing RIS may be set during calibration. The UE may perform beam discovery with the end user RIS. The UE and the AP may convey wireless data via reflections off each of the RIS's in the communication path. The beam of the end user RIS may be updated to track the UE device while the other the beams remain fixed. The beams may be calibrated using retroreflection and beam variation for each pair of RIS's up the communication path.

公开(公告)号：US20250055554A1

公开(公告)日：2025-02-13

申请号：US18393545

申请日：2023-12-21

Applicant: Apple Inc.

Inventor： Jan K Ellenbeck ,  Biljana Badic ,  Christian Drewes ,  Mikhail Wilhelm ,  Stefan Meyer ,  Norman Goris

IPC: H04B7/08 ,  H04B7/0452 ,  H04W56/00

Abstract: Disclosed are methods, systems, and computer-readable medium to perform operations including: receiving, from a remote device, a reference signal for each of one or more synchronization signal blocks (SSBs); responsive to the receiving, selecting a receiver (Rx) beam from a set of candidate receiver (Rx) beams, the selecting being based on a sweep of the candidate Rx beams and on measuring the reference signal with one or more of the candidate Rx beams of the set of the candidate Rx beams; and communicating, using the selected Rx beam, an element of common control signaling (CCS) information to the remote device.