知搜-全球专利检索

  1. Login
  2. Sign Up

Search Results

61 records (took 0.024 seconds)

    METHOD AND APPARATUS FOR MOTION DETECTION SYSTEMS
    31.
    发明申请
    METHOD AND APPARATUS FOR MOTION DETECTION SYSTEMS 审中-公开

    公开(公告)号：US20190271774A1

    公开(公告)日：2019-09-05

    申请号：US15909830

    申请日：2018-03-01

    Applicant: QUALCOMM Incorporated

    Inventor： Xiaoxin ZHANG ,  Youngsin LEE ,  Ning ZHANG

    IPC: G01S13/56 ,  H04L25/02

    Abstract: Method, apparatus and systems for detecting motion of an object or person have been disclosed. The method and the accompanying apparatus for motion detection include determining a plurality of channel impulse response (CIR) power profiles over a plurality of time sampling taps of one or more received signals, time aligning the plurality of the CIR power profiles based on time sampling taps of one or more occurrences of peak CIR power levels being above a threshold in each of the plurality of the CIR power profiles for generating a reference CIR power profile, and detecting motion based on a comparison of the reference CIR power profile to a captured signal CIR power profile. The detecting motion may be based on a coarse motion detection process, and followed by a fine motion detection process if a correlation degree threshold is below a level in the coarse motion detection process.

    METHOD AND APPARATUS FOR TIME-OF-DEPARTURE (ToD) ADJUSTMENT BASED ON TIME-OF-ARRIVAL (ToA) CORRECTION
    32.
    发明申请
    METHOD AND APPARATUS FOR TIME-OF-DEPARTURE (ToD) ADJUSTMENT BASED ON TIME-OF-ARRIVAL (ToA) CORRECTION 审中-公开
    基于时间（ToA）校正的时间延迟（ToD）调整的方法和装置

    公开(公告)号：US20150215821A1

    公开(公告)日：2015-07-30

    申请号：US14167749

    申请日：2014-01-29

    Applicant: QUALCOMM Incorporated

    Inventor： Lei ZHANG ,  Sundar SUBRAMANIAN ,  Ying WANG ,  Xinzhou WU ,  Carlos ALDANA ,  Xiaoxin ZHANG

    IPC: H04W28/18 ,  H04W4/02

    CPC classification number: H04W4/029 ,  H04W56/00

    Abstract: Implementations of the technology described herein provide adjustment to the time-of-departure (ToD) of the start of the acknowledgement frames (ACK) based on the time-of-arrival (ToA) estimation and correction of their corresponding message frames to keep the turnaround time of the acknowledgement frames stable to a predefined order of precision, with special applications for Wi-Fi ranging to achieve double-sided time-of-arrival (ToA) correction accuracy with minimal frame exchanges. A receiving station uses its time-of-arrival (ToA) correction to adjust the transmission time of an acknowledgement message (ACK) so that both the sending station and the receiving station can estimate round trip time (RTT) (or perform ranging) at the same level or higher accuracy.

    Abstract translation: 本文描述的技术的实现基于到达时间（ToA）估计和相应消息帧的校正来提供对确认帧（ACK）的开始的出发时间（ToD）的调整，以保持 确认帧的周转时间以预定义的精度顺序稳定，Wi-Fi的特殊应用范围可以通过最少的帧交换实现双面到达时间（ToA）校正精度。 接收站使用其到达时间（ToA）校正来调整确认消息（ACK）的发送时间，使得发送站和接收站都可以估计出来的时间（RTT）（或执行测距）在 相同水平或更高的精度。

    OCCUPANCY DETECTION AND RANGE ESTIMATION USING WI-FI RADAR
    33.
    发明申请
    OCCUPANCY DETECTION AND RANGE ESTIMATION USING WI-FI RADAR 有权

    公开(公告)号：US20250130326A1

    公开(公告)日：2025-04-24

    申请号：US18491698

    申请日：2023-10-20

    Applicant: QUALCOMM Incorporated

    Inventor： Muhammad Osama SHAHID ,  Peyman SIYARI ,  Xiaoxin ZHANG

    IPC: G01S13/56 ,  G01S7/00 ,  G01S7/03 ,  G01S13/08

    Abstract: Aspects presented herein may improve the accuracy and reliability of radio frequency (RF) sensing performed by wireless devices, which may include detection of living objects with minimal movements (e.g., breathing). In one aspect, a UE receives a set of signals over a time period, where each signal in the set of signals includes a superposition of multipath signals traversed by the signal and a leakage signal. The UE filters out the leakage signal from each signal in the set of signals to obtain the superposition of the multipath signals for each signal. The UE detects whether there is a variance across the filtered set of signals over the time period. The UE identifies a presence of at least one moving object in response to the detection of the variance.

    LOCATION OF TARGET OBJECT USING WIRELESS RANGING AND USER EQUIPMENT POSITIONS
    34.
    发明申请
    LOCATION OF TARGET OBJECT USING WIRELESS RANGING AND USER EQUIPMENT POSITIONS 有权

    公开(公告)号：US20240427007A1

    公开(公告)日：2024-12-26

    申请号：US18340350

    申请日：2023-06-23

    Applicant: QUALCOMM Incorporated

    Inventor： Feliciano GOMEZ MARTINEZ ,  Stephen Jay SHELLHAMMER ,  Bin TIAN ,  Xiaoxin ZHANG

    IPC: G01S13/76

    Abstract: A method for locating a target object, includes: determining a plurality of position-distance values, each of the plurality of position-distance values includes: a position of a user equipment relative to a reference position; and a distance corresponding to the position of the user equipment, the distance being between the position of the user equipment and the target object measured using one or more wireless ranging signals between the user equipment and the target object, where each position of the user equipment in the plurality of position-distance values is different; and calculating a position of the target object using the plurality of position-distance values, where the position of the target object is relative to the reference position.

    CHANNEL STATE INFORMATION (CSI) REPORTING FOR RADIO FREQUENCY (RF) SENSING
    37.
    发明公开
    CHANNEL STATE INFORMATION (CSI) REPORTING FOR RADIO FREQUENCY (RF) SENSING 审中-公开

    公开(公告)号：US20240214165A1

    公开(公告)日：2024-06-27

    申请号：US18559771

    申请日：2022-06-03

    Applicant: QUALCOMM INCORPORATED

    Inventor： Simone MERLIN ,  Vikram KANDUKURI ,  Xiaoxin ZHANG ,  Shwetha Goravanahalli KEMPARAJU

    IPC: H04L5/00 ,  H04L25/02

    CPC classification number: H04L5/0057 ,  H04L5/005 ,  H04L25/022 ,  H04L25/0224

    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for reporting channel state information (CSI). In some implementations, a receiving device may acquire a set of channel frequency response (CFR) values associated with one or more sounding packets that are received from a transmitting device and may group the set of CFR values into multiple subsets according to a number of transmit antennas of the transmitting device, a number of receive antennas of the receiving device, or a number of tones spanning a bandwidth of the wireless channel. In such implementations, the receiving device may transmit one or more CSI report frames each carrying a respective subset of the CFR values. In some other implementations, a receiving device may acquire multiple CSI associated with respective sounding packets and may transmit a single CSI report frame carrying the CSI for each of the wireless channels.

    SHARED MEDIA
    38.
    发明公开
    SHARED MEDIA 审中-公开

    公开(公告)号：US20240179192A1

    公开(公告)日：2024-05-30

    申请号：US18511412

    申请日：2023-11-16

    Applicant: QUALCOMM Incorporated

    Inventor： Andrew John LAISTER ,  John TURNER ,  Miran CHUN ,  Xiaoxin ZHANG

    IPC: H04L65/1069 ,  H04L65/402 ,  H04W8/00

    CPC classification number: H04L65/1069 ,  H04L65/402 ,  H04W8/005

    Abstract: A first device includes one or more processors configured to determine, based on one or more wireless signals, a candidate device list identifying one or more devices that are within a communication range of one or more sensing devices. The one or more processors are further configured to, based on a determination to initiate a shared media session with a second device of the candidate device list, receive a media stream including particular media content from a remote media service while the particular media content is being sent from the remote media service to the second device. The one or more processors are further configured to, based on the determination to initiate the shared media session, cause the particular media content to be output, based on synchronization information, contemporaneous with output of the particular media content at the second device.

Patent Agency Ranking