公开(公告)号：US20170250831A1

公开(公告)日：2017-08-31

申请号：US15191493

申请日：2016-06-23

Applicant: QUALCOMM Incorporated

Inventor： Carlos Horacio Aldana ,  Jeff Smith ,  Xiaoxin Zhang ,  Chia-Hui Lin ,  Yen-Feng Lee ,  Ravi Gidvani ,  Alecsander Eitan ,  Rahul Malik

IPC: H04L12/18 ,  H04W24/10 ,  H04L12/841

CPC classification number: G01S5/0009 ,  G01S5/021 ,  G01S5/0226 ,  H04W4/02 ,  H04W4/029 ,  H04W24/10 ,  H04W84/12 ,  H04W88/02

Abstract: Disclosed embodiments facilitate wireless channel calibration, including ranging and direction finding, between wirelessly networked devices. In some embodiments. a method on a first station (STA) may comprise: transmitting a first NDPA frame to one or more second stations (STAs), the first NDPA frame comprising a first bit indicating that one or more subsequent frames comprise ranging or angular information; and transmitting, after a Short Interval Frame Space (SIFS) time interval, a second frame. The second frame may be one of: a Null Data Packet az (NDP_az) frame with information about a time of transmission of the NDP_az frame, or a Null Data Packet (NDP) frame, or a Beam Refinement Protocol (BRP) frame. The first NDPA frame may be unicast, multicast, or broadcast.

公开(公告)号：US20170215037A1

公开(公告)日：2017-07-27

申请号：US15370502

申请日：2016-12-06

Applicant: QUALCOMM Incorporated

Inventor： Santosh Vamaraju ,  Carlos Horacio Aldana ,  Xiaoxin Zhang ,  Ravi Gidvani

IPC: H04W4/02 ,  H04W4/20 ,  H04L5/00

CPC classification number: H04W4/023 ,  H04L5/0055 ,  H04W4/20 ,  H04W64/00 ,  H04W88/02

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.

公开(公告)号：US09699052B2

公开(公告)日：2017-07-04

申请号：US14285594

申请日：2014-05-22

Applicant: QUALCOMM Incorporated

Inventor： Carlos Horacio Aldana ,  Sandip Homchaudhuri ,  Xin He ,  Xiaoxin Zhang ,  Ashish Kumar Shukla

IPC: H04W24/10 ,  H04L12/26 ,  H04W64/00 ,  G01S5/00 ,  G01S13/76 ,  H04W24/00 ,  H04W4/04 ,  H04L5/00 ,  H04W76/02 ,  H04W72/08

CPC classification number: H04L43/0864 ,  G01S5/00 ,  G01S13/767 ,  H04L5/005 ,  H04W4/043 ,  H04W4/30 ,  H04W24/00 ,  H04W64/00 ,  H04W72/082 ,  H04W76/10

Abstract: Disclosed are systems, methods and devices for obtaining round trip time measurements for use in location based services. In particular implementations, a fine timing measurement request message wirelessly transmitted by a first transceiver device to a second transceiver device may permit additional processing features in computing or applying a signal round trip time measurement. Such a signal round trip time measurement may be used in positioning operations.

公开(公告)号：US09674814B2

公开(公告)日：2017-06-06

申请号：US14500047

申请日：2014-09-29

Applicant: QUALCOMM Incorporated

Inventor： Carlos Horacio Aldana

IPC: H04W24/08 ,  H04L5/00 ,  H04W64/00 ,  G01S13/82 ,  G01S5/14

CPC classification number: H04W64/006 ,  G01S5/14 ,  G01S13/825

Abstract: Techniques for positioning with Fine Timing Measurement (FTM) messages are disclosed. An example of a wireless transceiver system for providing a FTM response message is configure to receive a FTM request from an initiating station, the FTM request may include a minimum delta FTM value, a number of bursts exponents value, and a As Soon As Possible (ASAP) value. The transceiver may send a first FTM response message indicating the FTM session is terminated if the wireless transceiver is incapable of meeting the minimum delta FTM value and the number of bursts exponents value, and send a second FTM response message including a status value based on the ASAP value in the FTM request if the wireless transceiver is capable of meeting the minimum delta FTM value and the number of bursts exponents value.

公开(公告)号：US20160081054A1

公开(公告)日：2016-03-17

申请号：US14837775

申请日：2015-08-27

Applicant: QUALCOMM Incorporated

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

IPC: H04W64/00 ,  H04L5/00 ,  H04W52/02 ,  H04W24/10 ,  H04L12/841

CPC classification number: H04W64/00 ,  H04L5/0055 ,  H04L47/283 ,  H04W24/00 ,  H04W52/0209 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/22

Abstract: A ranging operation between a first wireless device and a second wireless may be performed by: sending, to the second wireless device, a data frame including a request for the second wireless device to report its actual SIFS duration to the first wireless device; determining a time of departure (TOD) of the data frame; receiving, from the second wireless device, a response frame including SIFS information indicative of the actual SIFS duration of the second wireless device; determining a time of arrival (TOA) of the response frame; and determining a round trip time (RTT) of the data frame and the response frame using the TOD of the data frame, the TOA of the response frame, and the actual SIFS duration of the second wireless device.

Abstract translation: 可以通过以下步骤来执行第一无线设备和第二无线设备之间的测距操作：向第二无线设备发送包括对第二无线设备向第一无线设备报告其实际SIFS持续时间的请求的数据帧; 确定数据帧的出发时间（TOD）; 从所述第二无线设备接收包括指示所述第二无线设备的实际SIFS持续时间的SIFS信息的响应帧; 确定响应帧的到达时间（TOA）; 以及使用数据帧的TOD，响应帧的TOA和第二无线设备的实际SIFS持续时间来确定数据帧和响应帧的往返时间（RTT）。

公开(公告)号：US09191908B2

公开(公告)日：2015-11-17

申请号：US14185660

申请日：2014-02-20

Applicant: QUALCOMM Incorporated

Inventor： Carlos Horacio Aldana ,  Ning Zhang

IPC: H04W56/00

CPC classification number: H04W56/0035 ,  H04W40/244 ,  H04W56/003 ,  H04W88/08

Abstract: Systems and methods for calculating round trip time (RTT) between two wireless devices with respective clock drifts, while lowering the impact of the clock drifts on the RTT. A first RTT in a first direction is determined between a first wireless device and a second wireless device based on a first set of one or more messages exchanged between the first wireless device and the second wireless device. A second RTT in a second direction is determined between the second wireless device and the first wireless device based on a second set of one or more messages exchanged between the second wireless device and the first wireless device, and an average RTT of the first RTT and the second RTT is computed, wherein the average RTT has a low impact of the clock drifts.

Abstract translation: 在具有相应时钟漂移的两个无线设备之间计算往返时间（RTT）的系统和方法，同时降低时钟漂移对RTT的影响。 基于在第一无线设备和第二无线设备之间交换的一个或多个消息的第一组，在第一无线设备和第二无线设备之间确定第一方向上的第一RTT。 基于在第二无线设备和第一无线设备之间交换的一个或多个消息的第二组以及第一RTT的平均RTT和第二无线设备的平均RTT，在第二无线设备和第一无线设备之间确定第二RTT， 计算第二RTT，其中平均RTT对时钟漂移的影响较小。

公开(公告)号：US09161167B2

公开(公告)日：2015-10-13

申请号：US13747843

申请日：2013-01-23

Applicant: QUALCOMM Incorporated

Inventor： Carlos Horacio Aldana ,  Ning Zhang ,  Mary A. Fales

IPC: H04W24/00 ,  H04W4/02 ,  H04W4/04 ,  H04L12/58

CPC classification number: H04W4/023 ,  H04L51/20 ,  H04W4/021 ,  H04W4/022 ,  H04W4/026 ,  H04W4/027 ,  H04W4/029 ,  H04W4/04

Abstract: Aspects of determining a geographical state of a target through a user device are provided. One method includes identifying at least one target associated with a target device configured to provide position data in a standard reference frame along with corresponding time values, and sending a request for access to geographical state information for at least one target. The method may further include receiving geographical state information associated with the at least one target, and generating a visual identifier of the at least one target based on the geographical state information. The visual identifier may be associated with data captured by an imaging sensor which is functionally coupled to the user device. Systems and apparatuses for determining a geographical state of a target through a user device are further presented.

Abstract translation: 提供通过用户设备确定目标的地理状态的方面。 一种方法包括识别与被配置为在标准参考帧中提供位置数据以及对应的时间值的目标设备相关联的至少一个目标，以及发送访问至少一个目标的地理状态信息的请求。 所述方法还可以包括接收与所述至少一个目标相关联的地理状态信息，以及基于所述地理状态信息生成所述至少一个目标的视觉标识符。 视觉标识符可以与由功能上耦合到用户设备的成像传感器捕获的数据相关联。 进一步介绍用于通过用户设备确定目标的地理状态的系统和装置。

公开(公告)号：US20150049679A1

公开(公告)日：2015-02-19

申请号：US13970382

申请日：2013-08-19

Applicant: QUALCOMM Incorporated

Inventor： Sandip Homchaudhuri ,  Carlos Horacio Aldana ,  Xiaoxin Zhang ,  James Simon Cho

IPC: H04W72/04

CPC classification number: H04W64/00

Abstract: A system and method are disclosed for performing ranging operations between two wireless devices without employing cyclic shift diversity (CSD) compensation techniques. For some embodiments, a first wireless device sends a negotiation request frame requesting the second wireless device to respond to subsequently received frames of a specified type using a selected one of the transmit chains in the second wireless device. Thereafter, the first wireless device sends a data frame to the second wireless device to initiate a ranging operation. The second wireless device sends a response frame of the specified type to the first wireless device using the selected one of the transmit chains.

Abstract translation: 公开了一种在两个无线设备之间执行测距操作而不采用循环移位分集（CSD）补偿技术的系统和方法。 对于一些实施例，第一无线设备发送协商请求帧，请求第二无线设备使用第二无线设备中的所选发送链中的所选择的一个响应所接收的指定类型的帧。 此后，第一无线设备向第二无线设备发送数据帧以发起测距操作。 第二无线设备使用所选择的发送链之一向第一无线设备发送指定类型的响应帧。

公开(公告)号：US20140153420A1

公开(公告)日：2014-06-05

申请号：US13759844

申请日：2013-02-05

Applicant: QUALCOMM INCORPORATED

Inventor： Lionel Jacques Garin ,  Vinay Sridhara ,  Xiaoxin Zhang ,  Sundar Raman ,  Gengsheng Zhang ,  Bernal A. Arroyo ,  Carlos Horacio Aldana

IPC: H04W24/00

CPC classification number: H04W24/00 ,  H04B7/0671 ,  H04B7/0828 ,  H04B7/0874

Abstract: Systems, apparatus and methods for determining a cyclic shift delay (CSD) mode from a plurality of CSD modes is disclosed. A received OFDM signal is converted to a channel impulse response (CIR) signal in the time domain and/or a channel frequency response (CFR) signal in the frequency domain. Matched filters and a comparator are used to determine a most likely current CSD mode. Alternatively, a classifier is used with a number of inputs including outputs from two or more matched filters and one or more outputs from a feature extractor. The feature extractor extracts features in the time domain from the CIR signal and/or in the frequency domain from the CFR signal useful in distinguishing various CSD modes.

Abstract translation: 公开了用于从多个CSD模式确定循环移位延迟（CSD）模式的系统，装置和方法。 接收到的OFDM信号在时域中被转换为信道脉冲响应（CIR）信号和/或频域中的信道频率响应（CFR）信号。 匹配滤波器和比较器用于确定最可能的当前CSD模式。 或者，分类器使用多个输入，包括来自两个或多个匹配滤波器的输出和来自特征提取器的一个或多个输出。 特征提取器从CIR信号和/或频域中提取时域中的特征，来自用于区分各种CSD模式的CFR信号。

公开(公告)号：US11595933B2

公开(公告)日：2023-02-28

申请号：US17114615

申请日：2020-12-08

Applicant: QUALCOMM Incorporated

Inventor： Ravi Gidvani ,  Sudheer Kumar Suryadevara ,  Carlos Horacio Aldana

IPC: H04W64/00 ,  G01S11/02 ,  H04L5/00 ,  H04W52/02 ,  H04W48/10 ,  H04W88/08

Abstract: Disclosed are methods, systems and devices for obtaining a measurement of a range between two devices. For example, wireless stations may obtain a measurement of range between the wireless stations based, at least in part, on an exchange messages such as fine timing measurement (FTM) messages. In a particular implementation, FTM messages may be received at a transceiver device in a burst of FTM messages from a responding wireless station. An acknowledgement messages may be transmitted to the responding wireless station in response to receipt of the FTM message.