公开(公告)号：US12073671B2

公开(公告)日：2024-08-27

申请号：US17470061

申请日：2021-09-09

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxin Zhang ,  Le Nguyen Luong ,  Liang Zhao ,  Rishabh Raj ,  Ravindra Chauhan

IPC: G07C9/00 ,  H04W76/16

CPC classification number: G07C9/00309 ,  H04W76/16 ,  G07C2009/00357

Abstract: Techniques are provided for improving ranging accuracy of ultrawideband (UWB) devices. An example method for obtaining a distance measurement with a wireless node includes obtaining a first distance measurement using a first radio link, determining a status of a second radio link in response to the first distance measurement being less than a threshold distance, configuring one or more transceiver parameters associated with the second radio link in response to determining the second radio link is utilizing a non-line of sight path, and obtaining a second distance measurement using the second radio link and the one or more transceiver parameters.

公开(公告)号：US12228632B2

公开(公告)日：2025-02-18

申请号：US18044952

申请日：2021-09-21

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxin Zhang ,  Parthiban Ellappan ,  Rishabh Raj

IPC: G01S13/04 ,  B60W40/08 ,  B60W50/14 ,  G01S13/50

Abstract: Embodiments described herein address these and other issues by providing radio frequency (RF) sensing to determine the status of a driver or other occupant of the vehicle. RF sensing may be provided by existing radios of a vehicle, such a Wi-Fi transceiver, and may therefore provide RF sensing functionality to a vehicle with little added cost. RF sensing can be leveraged to implement safety features such as detecting an unattended child or pet in a vehicle, detecting driver alertness, and the like.

公开(公告)号：US11743682B2

公开(公告)日：2023-08-29

申请号：US17229794

申请日：2021-04-13

Applicant: QUALCOMM Incorporated

Inventor： Rishabh Raj ,  Xiaoxin Zhang ,  Parthiban Ellappan ,  Shree Raman Srinivasan ,  Ravindra Chauhan

IPC: H04W4/02 ,  H04W4/80 ,  H04W80/06 ,  H04W72/54 ,  H04W84/18

CPC classification number: H04W4/023 ,  H04W4/025 ,  H04W4/80 ,  H04W72/54 ,  H04W80/06 ,  H04W84/18

Abstract: Disclosed are systems and techniques for performing mapping using radio frequency (RF) sensing. For instance, a server can obtain a first set of RF sensing data and orientation data corresponding to a first wireless device from a plurality of wireless devices. The first set of RF sensing data can be associated with at least one received waveform that is a reflection of a transmitted waveform from a first reflector. Based on the first set of RF sensing data, orientation data, and location data corresponding to the first wireless device, an indoor map can be generated that includes a reference to the reflector.

公开(公告)号：US11582511B2

公开(公告)日：2023-02-14

申请号：US17201497

申请日：2021-03-15

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxin Zhang ,  Rishabh Raj ,  Parthiban Ellappan

IPC: H04N21/442 ,  H04B17/309 ,  H04N21/45

Abstract: Techniques are provided for performing radio frequency (RF) sensing to determine the viewing status of a television user. This can be used to determine user behavior during the playback of content (e.g., whether a user is watching the content), which can be used as a data point for determining the user's level of interest in the content. Using the status of the television user, embodiments can provide additional or alternative functionality, such as powering down and/or powering up the television. Furthermore, RF sensing may be performed by existing television hardware, such a Wi-Fi transceiver, and may therefore provide RF sensing functionality to a television with little or no added cost.

公开(公告)号：US12058585B2

公开(公告)日：2024-08-06

申请号：US18326744

申请日：2023-05-31

Applicant: QUALCOMM Incorporated

Inventor： Rishabh Raj ,  Xiaoxin Zhang ,  Parthiban Ellappan ,  Shree Raman Srinivasan ,  Ravindra Chauhan

IPC: H04W4/02 ,  H04W4/80 ,  H04W72/54 ,  H04W80/06 ,  H04W84/18

CPC classification number: H04W4/023 ,  H04W4/025 ,  H04W4/80 ,  H04W72/54 ,  H04W80/06 ,  H04W84/18

Abstract: Disclosed are systems and techniques for performing mapping using radio frequency (RF) sensing. For instance, a server can obtain a first set of RF sensing data and orientation data corresponding to a first wireless device from a plurality of wireless devices. The first set of RF sensing data can be associated with at least one received waveform that is a reflection of a transmitted waveform from a first reflector. Based on the first set of RF sensing data, orientation data, and location data corresponding to the first wireless device, an indoor map can be generated that includes a reference to the reflector.