公开(公告)号：US20240310470A1

公开(公告)日：2024-09-19

申请号：US18184566

申请日：2023-03-15

Applicant: Apple Inc.

Inventor： Benedikt Schweizer ,  Danila Zaev ,  Firouz Behnamfar ,  Ayman F Naguib

IPC: G01S5/02

CPC classification number: G01S5/0273

Abstract: A communication system may include a transmitting (TX) device, a receiving (RX) device, and a one or more reconfigurable intelligent surfaces (RIS's). The TX device may transmit a wireless signal received by the RX device over multiple propagation paths including paths that reflect off the RIS(s) and paths that include other reflections. The RX device may receive location information from each RIS. The RX device or a control device may control each RIS to modulate the wireless signal with a different respective identifier upon reflection of the wireless signal by the RIS. The RX device may distinguish the wireless signal as reflected off the RIS(s) from reflections off other objects based on the RIS identifiers modulated onto the wireless signals by the RIS(s). The RX device may use a multilateration technique to detect its position based on the received location information and the wireless signals as reflected off the RIS(s).

公开(公告)号：US20250159533A1

公开(公告)日：2025-05-15

申请号：US18945310

申请日：2024-11-12

Applicant: Apple Inc.

Inventor： Benedikt Schweizer ,  Debashis Dash

IPC: H04W24/10 ,  H04L5/00 ,  H04W84/12

Abstract: Wireless stations and access points may perform a wireless local area network (WLAN) sensing operation using a basic sensing by proxy (SBP) procedure driven by an SBP responder, in which case the sensing features associated with the SBP procedure are dictated by the SBP responder, or driven by an SBP initiator, in which case the sensing features are dictated by the SBP initiator. For an SBP responder driven SBP procedure, the SBP session may be requested with a reduced number of parameters that include number of respondents and maximum bandwidth. For an SBP initiator driven SBP procedure, suitable sensing responders may be identified and instructed prior to receiving a sensing request. The WLAN sensing session may be paused to enter doze mode during which no sensing frame exchanges take place between participating nodes and the WLAN sensing session does not expire and is not terminated, and may resume upon exiting doze mode.

公开(公告)号：US20240258708A1

公开(公告)日：2024-08-01

申请号：US18160245

申请日：2023-01-26

Applicant: Apple Inc.

Inventor： Ahmed M Soliman ,  Danila Zaev ,  Kenza Hamidouche ,  Benedikt Schweizer ,  Ayman F Naguib ,  Norman Goris ,  Said Medjkouh

IPC: H01Q19/10 ,  H04B7/06 ,  H04B7/08

CPC classification number: H01Q19/10 ,  H04B7/0639 ,  H04B7/08

Abstract: A communication system may include a base station (BS), a user equipment (UE) device, a reconfigurable intelligent surface (RIS) having a local controller, and a remote controller. Antenna elements on the RIS may reflect signals between the BS and UE while exhibiting reflection coefficients. The remote controller may transmit a control model and the UE may transmit local information to the local controller, which generates the reflection coefficients based on the local information and control model. Alternatively, the remote controller may transmit the control model to the UE and a codebook to the RIS. The UE may transmit an identifier to the RIS based on local information and the control model. The local controller may implement reflection coefficients of a codebook entry identified by the identifier. Splitting control of the RIS in these ways may minimize communication overhead, provide coverage extension for the UE, and optimize privacy.