公开(公告)号：US20160150500A1

公开(公告)日：2016-05-26

申请号：US14939278

申请日：2015-11-12

Applicant: QUALCOMM Incorporated

Inventor： Meghna Agrawal ,  Ning Zhang ,  Xiaoxin Zhang ,  Youhan Kim ,  Praveen Dua ,  Carlos Horacio Aldana

IPC: H04W64/00 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04L5/0007 ,  H04L1/1685 ,  H04L1/18 ,  H04L1/1854 ,  H04L1/1896 ,  H04L2001/0093 ,  H04W84/12

Abstract: Methods and apparatuses are disclosed that may perform simultaneous ranging operations between a requester device and each of a plurality of target devices using OFDMA-based frame exchanges while maintaining a level of accuracy comparable to ranging operations that do not use OFDMA-based frame exchanges. Tone interleaving may be used so that the ranging devices may estimate channel conditions for the full frequency spectrum of the wireless medium. For example, a unique set of two or more non-adjacent groups of OFDM sub-carrier frequencies may be allocated to each of the plurality of target devices for ranging operations.

Abstract translation: 公开了可以使用基于OFDMA的帧交换在请求者设备和多个目标设备中的每一个之间执行同时测距操作的方法和设备，同时保持与不使用基于OFDMA的帧交换的测距操作相当的准确度。 可以使用音调交织，使得测距设备可以估计无线介质的全频谱的信道条件。 例如，可将两个或更多个非相邻OFDM子载波频率组的唯一集合分配给多个目标设备中的每一个用于测距操作。

公开(公告)号：US20160150499A1

公开(公告)日：2016-05-26

申请号：US14938738

申请日：2015-11-11

Applicant: QUALCOMM Incorporated

Inventor： Carlos Horacio Aldana ,  Xiaoxin Zhang

IPC: H04W64/00 ,  H04W24/10 ,  H04L5/00 ,  H04W4/02

CPC classification number: H04W64/00 ,  G01S5/0236 ,  G01S11/02 ,  H04L5/0055 ,  H04W4/02 ,  H04W24/10 ,  H04W84/12

Abstract: Apparatuses and methods for performing multi-channel passive ranging operations are disclosed. In one example, a passive listening device may receive, on a first wireless channel, a first exchange of signals between a first wireless device and a second wireless device, and then receive on a second wireless channel, a second exchange of signals between the first wireless device and the second wireless device, the first wireless channel different than the second wireless channel. The passive listening device may determine a differential distance between the passive listening device and the first and second wireless devices based, at least in part, on the first and second exchanges of signals on the first and second wireless channels, respectively.

Abstract translation: 公开了用于执行多通道无源测距操作的装置和方法。 在一个示例中，无源聆听设备可以在第一无线信道上接收第一无线设备和第二无线设备之间的第一信号交换，然后在第二无线信道上接收第一无线设备之间的第二信号交换 无线设备和第二无线设备，第一无线信道不同于第二无线信道。 至少部分地基于第一和第二无线信道上的信号的第一和第二交换，被动收听设备可以分别确定无源收听设备与第一和第二无线设备之间的差距。

公开(公告)号：US09332383B2

公开(公告)日：2016-05-03

申请号：US14345941

申请日：2012-09-19

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxin Zhang ,  Ning Zhang

IPC: H04W64/00 ,  H04W4/02 ,  G01S5/02 ,  G01S5/14 ,  G01S13/87

CPC classification number: H04W4/02 ,  G01S5/021 ,  G01S5/14 ,  G01S13/876

Abstract: A TOA positioning system can be implemented that employs a calculated initial location of a wireless network device. For each of a plurality of reference wireless network devices, a distance between the wireless network device and the reference wireless network device is determined based, at least in part, on a round trip transit time between the wireless network device and the reference wireless network device. An initial location of the wireless network device can be calculated based, at least in part, on a location of each of the plurality of reference wireless network devices. A location of the wireless network device can be estimated based, at least in part, on the calculated initial location, the distance to each of the reference wireless network devices, and an initial distance calibration constant.

公开(公告)号：US20160080960A1

公开(公告)日：2016-03-17

申请号：US14826010

申请日：2015-08-13

Applicant: QUALCOMM Incorporated

Inventor： Carlos Aldana ,  Xiaoxin Zhang

IPC: H04W24/10 ,  H04L12/26

Abstract: Disclosed are systems, methods and devices for measuring a range between wireless devices using an exchange of messages between devices. For example, wireless transceiver devices may exchange messages transmitted in a wireless communications link to measure a time of flight. Based, at least in part, on the measured time of flight, a location of one of the wireless transceiver devices may be estimated.

Abstract translation: 公开了用于使用设备之间的消息交换来测量无线设备之间的范围的系统，方法和设备。 例如，无线收发器设备可以交换在无线通信链路中发送的消息以测量飞行时间。 至少部分地基于测量的飞行时间，可以估计无线收发器设备之一的位置。

公开(公告)号：US20140334401A1

公开(公告)日：2014-11-13

申请号：US14267717

申请日：2014-05-01

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxin Zhang ,  Sandip Homchaudhuri ,  Carlos Horacio Aldana

IPC: H04W72/12

CPC classification number: G01S5/0236 ,  G01S5/0226 ,  H04W56/002 ,  H04W64/00

Abstract: Methods, systems, and devices are described for a wireless positioning framework in which an access point (AP) broadcasts a message within a beacon interval that identifies a transmission schedule for a set of stations. The message may include an information element identifying the stations in the set. The set may be determined based on station clock drifts and/or a ranging accuracy sought by the AP. The AP may also provide a station identifier, and frame spacing and delay parameters, which may be used to determine a distinct backoff for each station. Using distinct backoffs allow the stations to avoid collisions when sending the transmissions. The AP may receive the transmissions according to the identified schedule and may determine a range (e.g., round-trip time) for each station in the set based at least on a time at which the respective transmission is received.

Abstract translation: 对于无线定位框架描述了方法，系统和设备，其中接入点（AP）在标识一组站的传输调度的信标间隔内广播消息。 消息可以包括识别集合中的站的信息元素。 该集合可以基于AP所寻求的站时钟漂移和/或测距精度来确定。 AP还可以提供站标识符和帧间隔和延迟参数，其可以用于确定每个站的不同的退避。 使用不同的后退允许站点在发送传输时避免冲突。 AP可以根据所识别的调度接收传输，并且可以至少基于接收相应传输的时间来确定该组中每个站的范围（例如，往返时间）。

公开(公告)号：US12267709B2

公开(公告)日：2025-04-01

申请号：US17722197

申请日：2022-04-15

Applicant: QUALCOMM Incorporated

Inventor： Yanjun Sun ,  Alireza Raissinia ,  Stephen Jay Shellhammer ,  Xiaoxin Zhang ,  George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil

IPC: H04W24/08

Abstract: Methods, systems, and devices for wireless communications are described. In some aspects, two devices may support signaling and messaging designs that support bandwidths that are greater than 160 MHz for ranging null data packets (NDPs). For example, various signaling and messaging designs may support a use of a 320 MHz bandwidth for ranging NDPs as part of a ranging measurement procedure, which may offer greater resolution than narrower bandwidths. The signaling and messaging designs may include one or more updates for a null data packet announcement (NDPA) frame, for a trigger frame, for session negation messages (such as one or both of an initial fine timing measurement (IFTM) frame and an IFTM request (IFTMR) frame), for segmentation techniques for ranging NDPs, or for any combination thereof.

公开(公告)号：US12126416B2

公开(公告)日：2024-10-22

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

IPC: H04B7/06 ,  H04L5/00 ,  H04L25/02 ,  H04W74/0816 ,  H04W80/02

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.

公开(公告)号：US11924707B2

公开(公告)日：2024-03-05

申请号：US17487979

申请日：2021-09-28

Applicant: QUALCOMM Incorporated

Inventor： Rolf De Vegt ,  Xiaoxin Zhang ,  Peyman Siyari

IPC: H04W4/02 ,  H04W4/40 ,  H04W12/037

CPC classification number: H04W4/023 ,  H04W4/026 ,  H04W4/027 ,  H04W4/40 ,  H04W12/037

Abstract: Disclosed are techniques for wireless communication. In an aspect, a first UE and a second UE perform a ranging procedure which includes communication of one or more ranging signals between the first UE and the second UE. The first UE obtains sensor data via a set of sensors coupled to the first UE, and transmits the sensor data to the second UE in association with the ranging procedure. The second UE determines a distance between the first UE and the second UE based on ranging measurement data associated with the one or more ranging signals and the sensor data.

公开(公告)号：US20230354058A1

公开(公告)日：2023-11-02

申请号：US17733826

申请日：2022-04-29

Applicant: QUALCOMM Incorporated

Inventor： Bapineedu Chowdary Gummadi ,  Xipeng Zhu ,  Rajeev Kumar ,  Shankar Krishnan ,  Xiaoxin Zhang

IPC: H04W24/02 ,  H04W24/10 ,  H04W16/18

CPC classification number: H04W24/02 ,  H04W24/10 ,  H04W16/18

Abstract: Methods, systems, and devices for wireless communications are described. A wireless device may receive an indication of a configuration for sensing measurement parameter reporting from a base station. The sensing measurement parameter reporting may be for a sensing operation. The wireless device may perform the sensing operation and transmit an indication of a measurement parameter value to the base station. The sensing measurement parameter value may be associated with a location of the wireless device. In some examples, the wireless device may transmit the indication of the sensing measurement parameter value based on performing the sensing operation.

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.