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公开(公告)号：US20220338141A1
公开(公告)日：2022-10-20
申请号：US17230530
申请日：2021-04-14
Applicant: QUALCOMM Incorporated
Inventor： Govind Singh , Xiaoxin Zhang , Sudhanshu Singh , Surabhi Vishnoi , Sushmitha Reddy Ganjarla
Abstract: This disclosure provides methods, devices, and systems for minimizing ranging errors resulting from clock drift and/or frequency offsets between wireless communication devices such as a responder device and an initiator device. In various implementations, the responder device receives a request for a ranging operation from the initiator device. The responder device determines whether its temperature exceeds a threshold. When the responder device's temperature exceeds the threshold, the responder device determines a time period after which the responder device's temperature is expected to decrease below the threshold. The responder device transmits a response frame indicating the responder device's temperature and the determined time period. In some instances, the determination that the responder device's temperature exceeds the threshold indicates that ranging errors resulting from clock drift and/or frequency offsets between the responder device and the initiator device are greater than an amount.
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公开(公告)号：US11381275B2
公开(公告)日：2022-07-05
申请号：US16297425
申请日：2019-03-08
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxin Zhang , Erik David Lindskog , Sunil Ravi , Kurt Erwin Landenberger , Mukul Sharma , Arjun Bhatia
Abstract: This disclosure provides systems, methods and apparatuses, including computer programs encoded on computer storage media, for ranging procedures performed using antenna switching. In one aspect, a device initiating a ranging procedure may transmit a ranging request, which may include antenna switching capabilities of the initiating device, a request for antenna switching by a responding device during the ranging procedure, or both. Ranging signaling may be communicated between the initiating device and the responding device using different transmit antennas, receive antennas, or both. In some implementations, ranging messages transmitted by the responding device may include transmit antenna indices used for transmission of different ranging messages, and receive antenna indices used for reception of different ranging response messages. The initiating device may estimate a range relative to the responding device based on round trip times (RTTs) associated with different antenna pairs used during the ranging procedure.
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公开(公告)号：US20200099495A1
公开(公告)日：2020-03-26
申请号：US16267822
申请日：2019-02-05
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxin Zhang , Sunil Ravi , Kurt Erwin Landenberger , Alireza Raissinia
Abstract: In some implementations, an apparatus transmits information indicating a modulation and coding scheme (MCS) table for transmitting non-legacy acknowledgement (ACK) frames during a ranging operation to a responder device, receives a ranging frame including an indication of whether the responder device is capable of supporting the indicated MCS table, and transmits to the responder device an ACK frame using an MCS that is based on the capability of the responder device to support the MCS table. In other implementations, the apparatus receives from an initiator device information indicating an MCS table for transmitting non-legacy ACK frames during the ranging operation, transmits a ranging frame including an indication of whether the apparatus is capable of supporting the indicated MCS table, and receives from the initiator device an ACK frame transmitted using an MCS that is based on the capability of the apparatus to support the MCS table.
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公开(公告)号：US10462633B2
公开(公告)日：2019-10-29
申请号：US15621914
申请日：2017-06-13
Applicant: QUALCOMM Incorporated
Inventor： Anssi Haverinen , Xiaoxin Zhang , Ning Zhang , Sandeep Kesireddy
IPC: H04B7/00 , H04W4/80 , H04B17/20 , H04B7/08 , H04W4/02 , H04B17/12 , H04L29/08 , H04W84/12 , H04W84/18
Abstract: This disclosure provides systems, methods and apparatuses for detecting motion based on wireless signals. In some implementations, a receiving device may receive, from a transmitting device, a packet containing a sequence. In some aspects, the packet may be a Bluetooth packet, and the sequence may be contained in a supplemental information appended to the Bluetooth packet. The receiving device may estimate angle information of the packet based on the sequence, and determine a difference between the estimated angle information and a reference angle. The angle information may be an angle of arrival (AoA) or an angle of departure (AoD) of the packet. The receiving device may detect motion based on the determined difference.
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公开(公告)号：US20190271775A1
公开(公告)日：2019-09-05
申请号：US15983065
申请日：2018-05-17
Applicant: QUALCOMM Incorporated
Inventor： Xiaoxin Zhang , Youngsin Lee , Ning Zhang , Erik Lindskog , Vincent Knowles Jones, IV
Abstract: This disclosure provides systems, methods and apparatuses for detecting motion based on one or more wireless signals. In some implementations, a receiving device may receive a first frame and a second frame from a transmitting device, may determine a first channel impulse response (CIR) based on the first frame, may determine a second CIR based on the second frame, may determine a difference between a shape of the first CIR and a shape of the second CIR, and may detect motion based on the determined difference.
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Patent Agency Ranking
公开(公告)号：US20190208456A1
公开(公告)日：2019-07-04
申请号：US15856820
申请日：2017-12-28
Applicant: QUALCOMM Incorporated
Inventor： Mahbod Mofidi , Arild Kolsrud , Paul Butler , Xiaoxin Zhang
CPC classification number: H04W40/02 , G06F3/017 , H04L5/14 , H04L45/74 , H04N21/44218 , H04W4/80 , H04W24/08
Abstract: Various aspects for motion detection and/or gesture recognition in a wireless communication device are disclosed, and may include a transmit/receive radio frequency switch including a control input for controlling radio frequency signal routing of the switch from a radio frequency transmit port of the wireless device to an antenna and from the antenna to a radio frequency receive port of the wireless device, a first radio frequency coupler for coupling to the transmit port of the wireless device and for passing of transmit signals from the transmit port to the antenna through the switch, a second radio frequency coupler for coupling to the receive port of the wireless device and for passing of receive signals from the antenna to the receive port through the switch, and a connector for connecting a transmit isolation port of the first coupler to a receive isolation port of the second coupler.
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公开(公告)号：US10182360B2
公开(公告)日：2019-01-15
申请号：US16045528
申请日：2018-07-25
Applicant: QUALCOMM Incorporated
Inventor： Carlos Horacio Aldana , Xiaoxin Zhang
Abstract: Apparatuses and methods are disclosed for performing ranging operations between an initiator device and a responder device. The initiator device may transmit, to the responder device, a fine timing measurement (FTM) request frame including a request to estimate angle information for a number of frames exchanged between the initiator device and the responder device and indicating a level of accuracy for the estimated angle information. The initiator device may receive a first FTM frame from the responder device, and may transmit an acknowledgement (ACK) frame to the responder device. The initiator device may receive, from the responder device, a second FTM frame including angle information of the first FTM frame and timing information of one or more of the exchanged frames.
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公开(公告)号：US10159068B2
公开(公告)日：2018-12-18
申请号：US15466167
申请日：2017-03-22
Applicant: QUALCOMM Incorporated
Inventor： Ning Zhang , Xiaoxin Zhang , Kai Shi
Abstract: This disclosure provides systems, methods and apparatuses for selecting a guard interval for transmission of orthogonal frequency-division multiplexing (OFDM) symbols on an uplink (UL) channel and on a downlink (DL) channel. In some implementations, a transmitting device and a receiving device can estimate channel delay spread (CDS) information for each other's transmit channels, exchange the estimated CDS information with each other, and select a guard interval based on the estimated CDS information exchanged with each other. The transmitting device can transmit a number of OFDM symbols separated by the selected guard interval to the receiving device on the UL channel, and the receiving device can transmit a number of OFDM symbols separated by the selected guard interval to the transmitting device on the DL channel.
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公开(公告)号：US10142781B2
公开(公告)日：2018-11-27
申请号：US15370502
申请日：2016-12-06
Applicant: QUALCOMM Incorporated
Inventor： Santosh Vamaraju , Carlos Horacio Aldana , Xiaoxin Zhang , Ravi Gidvani , Erik David Lindskog
Abstract: Disclosed are methods, systems and devices for obtaining a range between devices based, at least in part, on an exchange of wireless messages. For example, wireless devices may obtain measurements of range based, at least in part, on an exchange fine timing measurement (FTM) messages. In one implementation, an initial FTM request message may be transmitted from a first wireless transceiver device to a second wireless transceiver device comprising one or more parameters indicative of a request for transmission of FTM messages in a particular format.
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公开(公告)号：US20180262866A1
公开(公告)日：2018-09-13
申请号：US15621914
申请日：2017-06-13
Applicant: QUALCOMM Incorporated
Inventor： Anssi Haverinen , Xiaoxin Zhang , Ning Zhang , Sandeep Kesireddy
CPC classification number: H04W4/80 , H04B7/0822 , H04B17/12 , H04B17/20 , H04L67/12 , H04W4/02 , H04W84/12 , H04W84/18
Abstract: This disclosure provides systems, methods and apparatuses for detecting motion based on wireless signals. In some implementations, a receiving device may receive, from a transmitting device, a packet containing a sequence. In some aspects, the packet may be a Bluetooth packet, and the sequence may be contained in a supplemental information appended to the Bluetooth packet. The receiving device may estimate angle information of the packet based on the sequence, and determine a difference between the estimated angle information and a reference angle. The angle information may be an angle of arrival (AoA) or an angle of departure (AoD) of the packet. The receiving device may detect motion based on the determined difference.
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