RELIABLE WIRELESS COMMUNICATION WITH A SOURCE USING RELAYED COMMUNICATION

    公开(公告)号:WO2019204060A1

    公开(公告)日:2019-10-24

    申请号:PCT/US2019/026090

    申请日:2019-04-05

    Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media for reliable communication between a source device, and two or more sink devices. In one aspect, a sink device closest in proximity to the source device can establish a wireless data transfer with the source device. In another aspect, the sink device having the more favorable radio channel conditions can establish a wireless data transfer with the source device. In some aspects, the sink devices can forward audio data received from the source device over a secondary communication link. The audio data can be forwarded to the other sink device automatically, or upon request from the other sink device. The secondary communication link can be implemented as a magnetic communication link, or as a Bluetooth communication link.

    METHOD FOR MEASURING DISTANCE TO A SHORT IN A TWO-CONDUCTOR WIRE

    公开(公告)号:WO2023064052A1

    公开(公告)日:2023-04-20

    申请号:PCT/US2022/042558

    申请日:2022-09-02

    Abstract: Various embodiments may provide systems and methods for determining a distance to a short in a two-conductor wire. Various embodiments may include determining a distance to a short in a two-conductor wire based at least in part on a phase difference between a phase of an injected tone and a phase of a reflected tone. Various embodiments may include determining a distance to a short in a two-conductor wire based at least in part on both a phase difference and an amplitude difference between an injected tone and a reflected tone. Various embodiments may include determining a distance to a short in a two-conductor wire based at least in part on a measured peak voltage of a combined pulse.

    METHODS AND APPARATUS FOR IMPROVED ACCURACY AND POSITIONING ESTIMATES

    公开(公告)号:WO2020060686A1

    公开(公告)日:2020-03-26

    申请号:PCT/US2019/045549

    申请日:2019-08-07

    Abstract: Disclosed are systems, devices and methods for determining a range estimate between two Bluetooth enabled devices based, at least in part, on round trip phase measurements of wireless signals transmitted between the devices. In one example, phase estimates between a single antenna of a first device and each element within the antenna array of a second device may be used to determine a residual range between the first device and the second device. In addition, an Angle of Arrival (AoA) may also be used to determine a two dimensional or three dimensional position of the second device.

    ELECTRONIC SHELF LABEL (ESL) EFFICIENT RECONNECT

    公开(公告)号:WO2021178064A1

    公开(公告)日:2021-09-10

    申请号:PCT/US2021/014414

    申请日:2021-01-21

    Abstract: According to various aspects and techniques to enable methods and systems for a first communication device to determine an approximate number of other communication devices that have lost contact with a host communication device. This includes determining a common future time window using a last known global time stamp and determining a transmit time within the common future time window. This also includes receiving samples that are captured during the common future time window on a predefined communication channel, as well as analyzing the received samples to estimate the total number of other communication devices.

    DETERMINING A PATH OF TRAJECTORY OF A WIRELESS DEVICE

    公开(公告)号:WO2020068289A1

    公开(公告)日:2020-04-02

    申请号:PCT/US2019/046465

    申请日:2019-08-14

    Abstract: In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may receive at least one signal from a second wireless device, the at least one signal including one or more of RTP information or inertial sensor information. The apparatus may determine at least one AoA measurement and at least one RTP measurement associated with the at least one signal received from the second wireless device. The apparatus may determine a path of trajectory of the second wireless device based at least in part on the at least one AoA measurement, the at least one RTP measurement, and the inertial sensor information.

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