Techniques for infinite ranging session

    公开(公告)号:US09961497B2

    公开(公告)日:2018-05-01

    申请号:US15216586

    申请日:2016-07-21

    CPC classification number: H04W4/023 H04W56/0015

    Abstract: Techniques for establishing a fine timing measurement (FTM) session of infinite duration between wireless devices is provided. A method according to these techniques includes generating, at a first wireless device, a first request to establish an FTM session with a second wireless device using an FTM protocol, the first request comprising one or more session parameters having a value indicative that the first wireless device is requesting the FTM session have an infinite session duration, receiving one or more FTM measurement messages from the second wireless device, and sending a second request to the second wireless device requesting that the FTM session be terminated.

    METHODS AND SYSTEMS FOR A RANGING PROTOCOL
    14.
    发明申请

    公开(公告)号:US20170142608A1

    公开(公告)日:2017-05-18

    申请号:US15348851

    申请日:2016-11-10

    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 initiating wireless station may transmit an initial FTM request message comprising one or more fields to a responding wireless station specifying an indefinite duration for a requested session to transmit FTM messages to the initiating wireless station.

    Network initiated ranging
    15.
    发明授权

    公开(公告)号:US10582469B2

    公开(公告)日:2020-03-03

    申请号:US15353291

    申请日:2016-11-16

    Inventor: Santosh Vamaraju

    Abstract: Disclosed are techniques for performing ranging operations between an access point and an unassociated mobile device. The techniques can include receiving, at an access point, a broadcast probe request from a mobile device unassociated with the access point. In response to receiving the probe request, it can be determined that the mobile device is capable of performing ranging operations including inspecting the received broadcast probe request. The access point can send a ranging request to the mobile device.

    Passive positioning procedure and use of single burst ASAP FTM sessions

    公开(公告)号:US09907047B1

    公开(公告)日:2018-02-27

    申请号:US15354955

    申请日:2016-11-17

    CPC classification number: H04W64/003 H04L43/0864 H04W4/023 H04W24/10 H04W64/00

    Abstract: Techniques for estimating a position of an observing station are disclosed based on capturing, at the observing station, a first and a second FTM message exchanged between a first messaging station and a second messaging station. At the observing station, a first time of arrival of the first FTM message and a second time of arrival of the second FTM message may be determined. Based on contents of one or more FTM messages, a first transmission-related time associated with the first FTM message and a second transmission-related time associated with the second FTM message may be obtained. The position of the observing station may be estimated based on (1) a position of the first messaging station, (2) a position of the second messaging station, (3) the first time of arrival, (4) the second time of arrival, (5) the first transmission-related time, and (6) the second transmission-related time.

    NETWORK INITIATED RANGING
    17.
    发明申请

    公开(公告)号:US20180007651A1

    公开(公告)日:2018-01-04

    申请号:US15353291

    申请日:2016-11-16

    Inventor: Santosh Vamaraju

    Abstract: Disclosed are techniques for performing ranging operations between an access point and an unassociated mobile device. The techniques can include receiving, at an access point, a broadcast probe request from a mobile device unassociated with the access point. In response to receiving the probe request, it can be determined that the mobile device is capable of performing ranging operations including inspecting the received broadcast probe request. The access point can send a ranging request to the mobile device.

    OPTIMIZING NETWORK CONNECTION AND ROAMING USING RANGING INFORMATION

    公开(公告)号:US20170171833A1

    公开(公告)日:2017-06-15

    申请号:US15373560

    申请日:2016-12-09

    Abstract: This disclosure provides systems, methods and apparatus for establishing and maintaining network connections based on ranging information. In one aspect, a wireless device is configured to identify one or more candidate access points (APs) within a vicinity of the wireless device, and exchange fine timing measurement (FTM) frames with candidate APs to determine respective distances between the wireless device and each of the candidate APs. In some aspects, the exchange of FTM frames may be performed when the wireless device is not associated with any AP. In some other aspects, the exchange of FTM frames may be performed when the wireless device is already associated with an existing AP, for example, to determine whether a roaming condition is satisfied. The wireless device then selects one of the candidate APs, based at least in part on the FTM frames, and associates with the selected candidate AP.

    METHODS AND SYSTEMS FOR A RANGING PROTOCOL
    20.
    发明申请

    公开(公告)号:US20170134978A1

    公开(公告)日:2017-05-11

    申请号:US15342992

    申请日:2016-11-03

    CPC classification number: H04W24/10 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 during sessions. In one implementation, an initiating wireless station may transmit an initial FTM request message to a responding wireless station wherein the initial FTM request message comprising one or more fields indicating a capability of the initiating STA to generate Range Reports.

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