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公开(公告)号：US20240048205A1
公开(公告)日：2024-02-08
申请号：US18452430
申请日：2023-08-18
Applicant: QUALCOMM Incorporated
Inventor： Simone MERLIN , Alireza RAISSINIA , Bin TIAN , Xiaoxin ZHANG , Solomon TRAININ , Assaf Yaakov KASHER , Manish MADAN , John GRESZCZUK
CPC classification number: H04B7/0626 , H04B7/0617 , H04L5/0053 , H04L25/0226 , H04W74/0816 , H04W80/02
Abstract: This disclosure provides methods, devices and systems for radio frequency (RF) sensing in wireless communication systems. In some implementations, a transmitter device transmits sounding sequences configured for channel estimation over a wireless channel to a receiver device. The transmitter device also transmits or receives non-sounding frames associated with a channel report of the receiver device. The transmitter device transmits a frame soliciting the channel report from the receiver device. The transmitter device receives the channel report, which may include channel state information (CSI) of the wireless channel responsive to at least the sounding sequences. Some types of channel reports may take longer to generate than other types of channel reports. Transmitting or receiving the non-sounding frames during the time period may prevent other devices from accessing the wireless channel when the receiver device needs additional time to generate a certain type of channel report.
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公开(公告)号：US20230421993A1
公开(公告)日：2023-12-28
申请号：US17848528
申请日：2022-06-24
Applicant: QUALCOMM Incorporated
Inventor： Stephen William EDGE , Bapineedu Chowdary GUMMADI , Bala RAMASAMY , Xiaoxin ZHANG , Ravi Shankar KADAMBALA
IPC: H04W4/029
CPC classification number: H04W4/029
Abstract: Techniques are provided for obtaining environmental information using radio frequency sensing by one or more wireless devices. An example method of crowd sensing and/or environmental detection using radio frequency sensing with one or more wireless devices includes providing radio frequency sensing assistance data to one or more wireless devices, receiving radio frequency sensing reports from the one or more wireless devices, determining one or more environmental characteristics based on the radio frequency sensing reports. Environmental characteristics can include a location or movement of one or more target objects, or attributes of one or more target objects (e.g., one or many people, vehicles, animals, drones or other target objects), or any combinations thereof. This may assist with monitoring of a crowd or road traffic and/or with identifying and tracking a particular person or vehicle.
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公开(公告)号：US20230353260A1
公开(公告)日：2023-11-02
申请号：US17731504
申请日：2022-04-28
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxin ZHANG , Edwin Chongwoo PARK , Bala RAMASAMY
IPC: H04B17/318 , G08B21/18 , H04B17/364
CPC classification number: H04B17/318 , G08B21/18 , H04B17/364
Abstract: Techniques are provided for utilizing wireless devices to detect and classify barriers between devices. An example method for detecting a change in state of a physical environment includes determining a first state of the physical environment based on one or more round trip time measurements and one or more received signal strength measurements associated with a first plurality of radio frequency signals exchanged with one or more wireless nodes; determining a second state of the physical environment based on one or more round trip time measurements and one or more received signal strength measurements associated with a second plurality of radio frequency signals exchanged with the one or more wireless nodes; and providing an indication of a state change in the physical environment based at least in part on a comparison of the first state and the second state.
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公开(公告)号：US20230088456A1
公开(公告)日：2023-03-23
申请号：US17478482
申请日：2021-09-17
Applicant: QUALCOMM Incorporated
Inventor： Bala RAMASAMY , Xiaoxin ZHANG , Edwin Chongwoo PARK , Danlu ZHANG
Abstract: Disclosed are systems and techniques for transferring device content using radio frequency (RF) sensing. For instance, a first wireless device can identify a first user of the first wireless device based on a first radio frequency (RF) signature associated with the first user. The first wireless media device can determine a disengagement of the first user from the first wireless media device. In response to the disengagement, content information associated with usage of the first wireless device by the first user can be captured.
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公开(公告)号：US20230081452A1
公开(公告)日：2023-03-16
申请号：US17471469
申请日：2021-09-10
Applicant: QUALCOMM Incorporated
Inventor： Parthiban ELLAPPAN , Xiaoxin ZHANG
Abstract: Techniques are provided for alerting a user of a virtual reality (VR) system of hazards in the proximate environment. An example method of proximity sensing with a virtual reality headset includes communicating with a station via a first wireless link, detecting a target object using radio frequency sensing on a second wireless link, determining a rate of approach associated with the target object, and generating an alert based at least in part on the rate of approach.
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Patent Agency Ranking
公开(公告)号：US20230050103A1
公开(公告)日：2023-02-16
申请号：US17403517
申请日：2021-08-16
Applicant: QUALCOMM Incorporated
Inventor： Devesh SINGH , Xiaoxin ZHANG
IPC: H04W4/02
Abstract: In an aspect, a wireless device receives one or more sensing sets. Each sensing set has one or more sensing packets. The wireless device determines one or more motion detection metrics. Each motion detection metric is based on phase differences between tones of the one or more sensing packets for each of the one or more sensing sets. The wireless device determines one or more detected motion magnitudes based on a comparison of each motion detection metric for each of the one or more sensing sets and a baseline metric. The wireless device detects a motion based on at least a portion of the one or more detected motion magnitudes exceeding a first motion threshold.
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公开(公告)号：US20220357419A1
公开(公告)日：2022-11-10
申请号：US17315128
申请日：2021-05-07
Applicant: QUALCOMM Incorporated
Inventor： Hadi GIVEHCHIAN , Xiaoxin ZHANG , Peyman SIYARI
Abstract: Methods and systems for generating map information of an environment using channel state information (CSI) of wireless signals received by access points (APs) in the environment are disclosed. In some implementations, a system uses CSI of a wireless signal received by a respective AP to determine a time-of-flight (ToF) and an angle-of-arrival (AoA) of one or more reflected path signal components of the wireless signal, and estimates the locations of points or surfaces in an area of the respective AP based on the ToF and AoA of the reflected path signal components. The estimated locations of the points or surfaces can be used to generate map information for the area. The system aggregates map information generated for different areas of the environment to determine map information for the entire environment. The wireless signals may be received from wireless stations or user equipment, or may be received from the respective AP.
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公开(公告)号：US20220346187A1
公开(公告)日：2022-10-27
申请号：US17237908
申请日：2021-04-22
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxin ZHANG , Stephen Jay SHELLHAMMER , Kapil RAI , Jayanand ASOK KUMAR , Vikram KANDUKURI , Sarin MATHEN
IPC: H04W80/02 , H04B17/354 , H04B17/336
Abstract: In an aspect, a wireless device is configured to transmit a physical layer protocol data unit on one or more channels, wherein the physical layer protocol data unit includes a first portion and a second portion. The first portion includes a signal length field indicating a duration of a transmission of the physical layer protocol data unit. The second portion includes a plurality of Wi-Fi sensing fields. The wireless device is configured to receive a reflected signal and a leakage signal associated with the physical layer protocol data unit. The reflected signal includes the physical layer protocol data unit reflected off of a target object. The leakage signal is associated with the physical layer protocol data unit.
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公开(公告)号：US20220329968A1
公开(公告)日：2022-10-13
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
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.
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公开(公告)号：US20220078575A1
公开(公告)日：2022-03-10
申请号：US17462168
申请日：2021-08-31
Applicant: QUALCOMM Incorporated
Inventor： Vidhur RAVEENDRAN , laith MADAIN , Xiaoxin ZHANG , Ashok BHATIA , Vijayalakshmi RAVEENDRAN
Abstract: Techniques are provided for utilizing wireless devices for contact tracing, and more specifically for detecting a barrier between devices to enhance contact tracing applications. An example method for detecting a barrier between a first device and a second device includes determining, by the first device, a first range measurement with respect to the second device using a first positioning technique determining, by the first device, a second range measurement with respect to the second device using a second positioning technique that is different from the first positioning technique, and detecting the barrier between the first device and the second device based on the first range measurement and the second range measurement.
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