公开(公告)号：US20250085388A1

公开(公告)日：2025-03-13

申请号：US18244825

申请日：2023-09-11

Applicant: Amazon Technologies, Inc.

Inventor： Durga Laxmi Narayana Swamy Inti ,  Maqsood Ahamed Abdul Careem ,  Ravi Ichapurapu ,  Shruti Makharia

IPC: G01S7/35 ,  G01S7/00 ,  G01S13/536 ,  G01S13/56

Abstract: Technologies directed to providing a wireless chipset with integrated radar for presence detection and localization for natural and ambient interactions with a device are described. A wireless device can send via a first antenna, a set of chirps in a first portion of a frame. The wireless device can receive, via a second antenna, reflected signals corresponding to the set of chirps, and generate in-phase and quadrature (IQ) samples. The wireless device sends (or receives), data in a second portion of the frame to (or from) a second device. The wireless device generates, using RF signals sent or received by the wireless device, channel state information (CSI) data representing channel properties of a channel. The wireless device can determine, using the IQ samples and the CSI data, that an environment in which the wireless device is located has been disrupted by a presence or motion of a person.