公开(公告)号：US09867004B2

公开(公告)日：2018-01-09

申请号：US15080337

申请日：2016-03-24

Applicant: QUALCOMM Incorporated

Inventor： Carlos Horacio Aldana ,  Ning Zhang ,  James Simon Cho ,  Xiaoxin Zhang

IPC: H04W24/00 ,  H04W4/02 ,  H04W56/00 ,  H04L27/26 ,  G01S5/14

CPC classification number: H04W4/023 ,  G01S5/021 ,  G01S5/14 ,  G01S11/08 ,  G01S19/48 ,  H04L27/266 ,  H04W4/02 ,  H04W56/0015 ,  H04W56/0025

Abstract: Disclosed herein are techniques for range measurement between one or more wireless stations (STAs) and a first access point (AP). In various embodiments, the first AP may synchronize a clock of the first AP with clocks of one or more synchronized APs. The first AP may perform a synchronization session with the one or more STAs. The first AP may also transmit one or more Broadcast time-of-departure (TOD) frames to the one or more STAs. Each of the one or more Broadcast TOD frames may include a time of departure of a Broadcast TOD frame from the first AP. A second AP and a third AP of the one or more synchronized APs may also transmit one or more Broadcast TOD frames to the one or more STAs for range and/or position determination.

公开(公告)号：US20170310570A1

公开(公告)日：2017-10-26

申请号：US15625671

申请日：2017-06-16

Applicant: QUALCOMM Incorporated

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

IPC: H04L12/26 ,  G01S5/00 ,  G01S5/06 ,  H04W64/00

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：US09781560B2

公开(公告)日：2017-10-03

申请号：US14881761

申请日：2015-10-13

Applicant: QUALCOMM Incorporated

Inventor： Beomsup Kim ,  Ning Zhang ,  Xiaoxin Zhang

IPC: H04W24/00 ,  H04W4/02 ,  G01S13/76 ,  H04W64/00 ,  G01S11/16 ,  H04B7/06 ,  H04W84/12

CPC classification number: H04W4/023 ,  G01S11/16 ,  G01S13/767 ,  H04B7/0602 ,  H04W64/00 ,  H04W84/12

Abstract: Methods, systems, and devices are described for wireless communication. An example method includes receiving, by a first wireless communication device having a plurality of antennas disposed at a localized position, a plurality of fine timing management (FTM) messages from a second wireless communication device. The example method includes transmitting, by the first wireless communication device, a plurality of FTM responses to the second wireless communication device. Each of the plurality of FTM responses may be transmitted using a different antenna of the first wireless communication device. The example method also includes estimating a range between the first wireless communication device and the second wireless communication device based at least in part on the plurality of FTM messages.

公开(公告)号：US20170257885A1

公开(公告)日：2017-09-07

申请号：US15426255

申请日：2017-02-07

Applicant: QUALCOMM Incorporated

Inventor： Xiaoxin Zhang ,  James Cho ,  Carlos Horacio Aldana

IPC: H04W74/00 ,  H04W24/08 ,  H04L5/00

CPC classification number: H04W74/008 ,  H04L5/0035 ,  H04L5/0055 ,  H04W24/08 ,  H04W64/00 ,  H04W84/12

Abstract: This disclosure provides systems, methods and apparatuses for performing ranging operations between a transmitting device and one or more receiving devices using one or more wireless channels. In some implementations, a transmitting device may substantially concurrently exchange, on each of a plurality of wireless channels, a corresponding set of FTM frames and acknowledgement (ACK) frames with a receiving device, and then determine a distance to the receiving device based on the plurality of exchanged sets of FTM and ACK frames. In some other implementations, the transmitting device may substantially concurrently exchange, with each of a plurality of receiving devices, a corresponding set of FTM frames and ACK frames on a corresponding one of a plurality of wireless channels, and then determine a distance to each of the plurality of receiving devices based on the corresponding sets of exchanged FTM and ACK frames.

公开(公告)号：US20170251332A1

公开(公告)日：2017-08-31

申请号：US15191498

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: H04W4/02 ,  G01S5/00 ,  G01S5/02

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

Abstract: Disclosed embodiments facilitate wireless channel calibration, ranging, and direction finding, between networked devices. A method on a first station (STA) may comprise: broadcasting, at a first time, a first NDPA frame to a plurality of second STAs. The first NDPA frame may include a first bit indicating that one or more subsequent frames comprise ranging or angular information. After a Short Interval Frame Space (SIFS) time interval from the first time, a second frame may be broadcast. The second frame may be a Null Data Packet (NDP) frame. In response, a plurality of Compressed Beamforming (CBF) frames may be received at the first STA where each CBF frame may be received from a distinct corresponding second STA, and may include Channel Feedback Information field with information pertaining to communication channel between the first STA and the corresponding second STA. The communications may be encoded using Orthogonal Frequency Division Multiple Access.

公开(公告)号：US20170245193A1

公开(公告)日：2017-08-24

申请号：US15048003

申请日：2016-02-19

Applicant: QUALCOMM Incorporated

Inventor： Ning Zhang ,  Xiaoxin Zhang ,  Carlos Horacio Aldana ,  Youhan Kim

IPC: H04W40/02 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04W40/02 ,  H04L5/0055 ,  H04L27/2601 ,  H04W64/00 ,  H04W84/12

Abstract: Apparatuses and methods are disclosed that may perform ranging operations between a first device and a second device. The second device transmits an FTM request frame indicating a number of supported non-legacy ACK frame formats, and receives a first FTM frame indicating capabilities of the first device to receive each of the non-legacy ACK frame formats supported by the second device. The second device selects one of the non-legacy ACK frame formats or a legacy ACK frame format based, at least in part, on the indicated capabilities of the first device, and then transmits ACK frames using the selected frame format during the ranging operation.

公开(公告)号：US20170019321A1

公开(公告)日：2017-01-19

申请号：US15281412

申请日：2016-09-30

Applicant: QUALCOMM Incorporated

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

IPC: H04L12/26 ,  H04W4/04 ,  G01S13/76

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.

Abstract translation: 公开了用于获得用于基于位置的服务的往返时间测量的系统，方法和装置。 在特定实现中，由第一收发器设备无线传输到第二收发器设备的精确定时测量请求消息可以允许在计算或应用信号往返时间测量时的附加处理特征。 这种信号往返时间测量可以用于定位操作。

公开(公告)号：US09332523B2

公开(公告)日：2016-05-03

申请号：US14272844

申请日：2014-05-08

Applicant: QUALCOMM Incorporated

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

IPC: H04W64/00 ,  G01S5/02

CPC classification number: H04W64/003 ,  G01S5/0205 ,  H04W64/00

Abstract: This disclosure includes systems and methods for determining the location of each of a plurality of STAs of a WLAN where an AP measures the round-trip time (RTT) and the angle of arrival (AOA) to each STA from implicit packet exchange, such as data frame and ACK frame. The AP may then report the RTT and AOA measurements to each STA using a dedicated beacon information element (IE) which multicasts RTT and AOA measurements to the STAs. By employing an additional parameter, namely, angle of arrival AOA, a single AP may compute the two-dimensional location of each associated STA. Further, another beacon IE may multicast mapping of the AIDs to MAC addresses so that the associated STAs can understand such mapping for STAs in a network so that one STA may know the location of other STAs. Encryption may be employed to achieve privacy.

Abstract translation: 本公开包括用于确定WLAN的多个STA中的每一个的位置的系统和方法，其中AP从隐式分组交换测量到每个STA的往返时间（RTT）和到达角（AOA），例如 数据帧和ACK帧。 然后，AP可以使用将RTT和AOA测量多播到STA的专用信标信息元素（IE）向每个STA报告RTT和AOA测量。 通过采用附加参数，即到达角AOA，单个AP可以计算每个相关STA的二维位置。 此外，另一个信标IE可以将AID多播到MAC地址，使得相关联的STA可以理解网络中的STA的这种映射，使得一个STA可以知道其他STA的位置。 可以采用加密来实现隐私。

公开(公告)号：US20140355462A1

公开(公告)日：2014-12-04

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

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.