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    Methods and systems for enhanced round trip time (RTT) exchange
    2.
    发明授权
    Methods and systems for enhanced round trip time (RTT) exchange 有权
    用于增强往返时间（RTT）交换的方法和系统

    公开(公告)号：US09560620B2

    公开(公告)日：2017-01-31

    申请号：US14699966

    申请日：2015-04-29

    Applicant: QUALCOMM Incorporated

    Inventor： Carlos Aldana ,  Subash Marri Sridhar

    IPC: H04W24/08 ,  H04L5/00 ,  H04W64/00

    CPC classification number: H04W64/00 ,  H04L5/0055 ,  H04W24/08

    Abstract: Disclosed are methods and systems for obtaining measurements of a range between devices based on a Round Trip Time (RTT) for an exchange messages. In particular, described are techniques for transmitting messages between or among devices to share computed parameters indicative of ranges between devices.

    Abstract translation: 公开了用于基于用于交换消息的往返时间（RTT）来获得设备之间的范围的测量的方法和系统。 特别地，描述了用于在设备之间或之间传送消息以共享指示设备之间的范围的计算参数的技术。

    Secure fine timing measurement protocol
    3.
    发明授权
    Secure fine timing measurement protocol 有权

    公开(公告)号：US10397779B2

    公开(公告)日：2019-08-27

    申请号：US15270883

    申请日：2016-09-20

    Applicant: QUALCOMM Incorporated

    Inventor： Subash Marri Sridhar ,  Carlos Horacio Aldana

    IPC: H04W12/06 ,  H04L29/12 ,  H04W76/11

    Abstract: Techniques disclosed herein are generally directed toward providing at least one security feature for an FTM session. More specifically, an initiating STA can include a security feature in an initial FTM request (iFTMR), determine whether a received FTM frame contains information responsive to the at least one security feature, and complete the FTM session accordingly (including terminating the FTM session if the FTM frame does not contain correct information responsive to the at least one security feature). Embodiments may include a security feature such as nonce values and/or generated (or partially-generated) media access control (MAC) addresses.

    METHODS AND SYSTEMS FOR RANGING PROTOCOL
    4.
    发明申请
    METHODS AND SYSTEMS FOR RANGING PROTOCOL 有权
    范围规则的方法和系统

    公开(公告)号：US20160241373A1

    公开(公告)日：2016-08-18

    申请号：US14845893

    申请日：2015-09-04

    Applicant: QUALCOMM Incorporated

    Inventor： Subash Marri Sridhar ,  Carlos Aldana

    IPC: H04L5/00 ,  H04W72/04 ,  H04W24/10

    CPC classification number: H04L5/0055 ,  G01S5/14 ,  G01S13/767 ,  H04W24/10 ,  H04W64/00 ,  H04W72/044

    Abstract: Disclosed are methods and systems for obtaining measurements of a range between devices in an exchange messages. In particular, described are techniques for transmitting messages between or among devices to share computed parameters indicative of ranges between devices. In particular implementations, shared computed parameters indicative of ranges between or among devices may enable computation of estimated locations of one or more of devices.

    Abstract translation: 公开了用于获得交换消息中的设备之间的范围的测量的方法和系统。 特别地，描述了用于在设备之间或之间传送消息以共享指示设备之间的范围的计算参数的技术。 在特定实现中，表示设备之间或之间的范围的共享计算参数可以使得能够计算一个或多个设备的估计位置。

    ENHANCEMENTS TO FINE TIMING MEASUREMENT (FTM) PROTOCOL
    5.
    发明申请
    ENHANCEMENTS TO FINE TIMING MEASUREMENT (FTM) PROTOCOL 审中-公开

    公开(公告)号：US20200068520A1

    公开(公告)日：2020-02-27

    申请号：US16107043

    申请日：2018-08-21

    Applicant: QUALCOMM Incorporated

    Inventor： Subash Marri Sridhar ,  Sai Pradeep Venkatraman ,  Xiaoxin Zhang

    IPC: H04W64/00 ,  H04W8/00 ,  H04L5/00 ,  H04W24/10 ,  H04B17/309 ,  H04W56/00

    Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for a ranging protocol between two wireless local area network (WLAN) devices. In one aspect, the ranging protocol may be adjusted based on channel quality of a wireless medium between the WLAN devices. For example, a quantity of ranging frames and bandwidth for the ranging frames may be adjusted based on the channel quality. In some implementations, the channel quality may be determined using setup messages for the ranging protocol without a wireless association between the WLAN devices. The ranging protocol may be useful for range determination in an indoor environment where a WLAN is deployed. In some implementations, the ranging protocol may be used to determine a location of a WLAN device.

    Method for a procedure for determining distance or angle between electronic devices connected wirelessly
    6.
    发明授权
    Method for a procedure for determining distance or angle between electronic devices connected wirelessly 有权

    公开(公告)号：US10158547B2

    公开(公告)日：2018-12-18

    申请号：US14842418

    申请日：2015-09-01

    Applicant: QUALCOMM Incorporated

    Inventor： Carlos Horacio Aldana ,  Sandip HomChaudhuri ,  Santosh Kumar Vamaraju ,  Subash Marri Sridhar ,  Bernal Arroyo

    IPC: H04L12/26 ,  H04W64/00 ,  H04L29/08 ,  G01S5/02

    Abstract: In a procedure for determining distance (or angle) between a pair of electronic devices wirelessly connected to one another, a current session may be temporarily suspended on request and thereafter the current session may be resumed. Temporary suspension and resumption of the current session may, for example, eliminate starting a new session between the pair of electronic devices and repeating a determination of parameters that were initially agreed upon in the current session. Temporary suspension of a current session may be signaled wirelessly, by one electronic device to the other electronic device, for example, by setting a specific value in a specific field, to signal that the current session is to be paused now, in a frame or message transmitted from the pausing device to the to-be-paused device. The current session may be resumed without repeating determination of the initially-agreed upon parameters, by transmitting a frame to initiate measurement exchange.

    Distribution and utilization of antenna information for location determination operations
    8.
    发明授权
    Distribution and utilization of antenna information for location determination operations 有权
    用于位置确定操作的天线信息的分配和利用

    公开(公告)号：US09565649B2

    公开(公告)日：2017-02-07

    申请号：US14836530

    申请日：2015-08-26

    Applicant: QUALCOMM Incorporated

    Inventor： Sai Pradeep Venkatraman ,  Subash Marri Sridhar ,  Saumitra Mohan Das ,  Carlos Horacio Aldana

    IPC: H04B1/04 ,  H04W64/00 ,  H04W24/08 ,  H01Q11/12 ,  H04B1/38 ,  H04M1/00 ,  H04W88/08 ,  G01S5/00

    CPC classification number: H04W64/003 ,  G01S5/00 ,  G01S5/0236 ,  G01S5/0252 ,  H04W24/08 ,  H04W64/00 ,  H04W88/08

    Abstract: Disclosed are implementations, including a method, performed at a processor-based mobile device, that includes receiving at the mobile device antenna information for a wireless node, including a transmitter gain for the wireless node in at least one message transmitted to the mobile device. The at least one message includes, a beacon frame message, a fine timing measurement (FTM) protocol-based message, and/or an assistance data message transmitted from a remote central repository. The method also includes deriving an estimate of a receiver gain for a receiver of the mobile device based, at least in part, on the transmitter gain for the wireless node, and adjusting one or more signal strength values determined for signals received from the wireless node based on the estimate of the receiver gain of the receiver of the mobile device derived based, at least in part, on the transmitter gain for the wireless node.

    Abstract translation: 公开了包括在基于处理器的移动设备执行的方法的实现方式，包括在移动设备处接收无线节点的天线信息，所述无线节点包括在发送到移动设备的至少一个消息中的无线节点的发射机增益。 所述至少一个消息包括信标帧消息，基于精确定时测量（FTM）协议的消息和/或从远程中央信息库发送的辅助数据消息。 该方法还包括至少部分地基于无线节点的发射机增益导出移动设备的接收机的接收机增益的估计，以及调整为从无线节点接收的信号确定的一个或多个信号强度值 基于至少部分地基于无线节点的发射机增益导出的移动设备的接收机的接收机增益的估计。

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