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    Methods and apparatus to mitigate interference and to extend field of view in ultra-wideband systems
    1.
    发明授权
    Methods and apparatus to mitigate interference and to extend field of view in ultra-wideband systems 有权

    公开(公告)号：US10103975B2

    公开(公告)日：2018-10-16

    申请号：US15246863

    申请日：2016-08-25

    Applicant: ZIH CORP.

    Inventor： Edward A. Richley ,  Aitan Ameti

    IPC: H04L12/725 ,  H04L12/26 ,  H04W72/08 ,  H04B1/06

    Abstract: Methods and systems are described for generating a first filtered signal by passing signal energy in a first radio frequency (RF) spectral band associated with a signaling bandwidth of an ultra-wideband (UWB) RF signaling system, generating a second filtered signal by passing signal energy in a second RF spectral band associated with the signaling bandwidth of the UWB RF signaling system, generating a plurality of digitized streams of pulses by identifying RF pulses in a respective filtered signal above a respective predetermined threshold, generating at least one time-stamped tag data packet, based on decoding a valid over-the-air packet corresponding to a plurality of RF pulses received according to a known burst pattern, selecting a time-stamped tag data packet from the at least one received time-stamped tag data packet, formulating a network data packet based on the selected time-stamped tag data packet, and outputting the network data packet.

    METHODS AND APPARATUS TO MITIGATE INTERFERENCE AND TO EXTEND FIELD OF VIEW IN ULTRA-WIDEBAND SYSTEMS
    3.
    发明申请
    METHODS AND APPARATUS TO MITIGATE INTERFERENCE AND TO EXTEND FIELD OF VIEW IN ULTRA-WIDEBAND SYSTEMS 审中-公开

    公开(公告)号：US20190028385A1

    公开(公告)日：2019-01-24

    申请号：US16131616

    申请日：2018-09-14

    Applicant: ZIH CORP.

    Inventor： Edward A. Richley ,  Aitan Ameti

    IPC: H04L12/725 ,  H04B1/06 ,  H04L12/26 ,  H04W72/08

    Abstract: An example apparatus includes a first detector configured to generate a first digitized stream of pulses and a second detector configured to generate a second digitized stream of pulses; a first packet decoder configured to decode a first valid over-the-air packet from the first digitized stream of pulses and generate a first time-stamped tag data packet; a second packet decoder configured to decode a second valid over-the-air packet from the second digitized stream of pulses; an arbiter configured to receive at least one of first and second time-stamped tag data packets and to select a time-stamped tag data packet from the at least one of the first and second time-stamped tag data packets; and a packet formatter to formulate a network data packet based on the selected time-stamped tag data packet.

    METHODS AND APPARATUS FOR REFERENCE REGENERATION IN REAL TIME LOCATION SYSTEMS
    5.
    发明申请
    METHODS AND APPARATUS FOR REFERENCE REGENERATION IN REAL TIME LOCATION SYSTEMS 有权

    公开(公告)号：US20180077530A1

    公开(公告)日：2018-03-15

    申请号：US15266137

    申请日：2016-09-15

    Applicant: ZIH CORP.

    Inventor： Alexander Mueggenborg ,  Edward A. Richley ,  Aitan Ameti

    IPC: H04W4/02 ,  H04W4/00 ,  H04W56/00

    CPC classification number: H04W4/026 ,  H04W4/80 ,  H04W56/0065

    Abstract: Methods and apparatus for reference regeneration in real time location systems are disclosed. An example disclosed method includes obtaining reference phase offsets from a plurality of radio frequency identification (RFID) receivers; transmitting a first synchronization signal via a wireline link to obtain differential wireline coarse sync measurements; determining a residual offset table based at least in part on the differential wireline coarse sync measurements and the reference phase offsets; transmitting a second synchronization signal via the wireline link to obtain revised differential wireline coarse sync measurements; generating revised reference phase offsets by combining the revised differential wireline coarse sync offsets with the residual offset table; and determining a physical location of a RFID tag based at least in part on i) the revised reference phase offsets and ii) RFID receiver clock measurements corresponding to a time-of-arrival of over-the-air data transmitted from the RFID tag.

    METHODS AND APPARATUS TO MITIGATE INTERFERENCE AND TO EXTEND FIELD OF VIEW IN ULTRA-WIDEBAND SYSTEMS
    9.
    发明申请
    METHODS AND APPARATUS TO MITIGATE INTERFERENCE AND TO EXTEND FIELD OF VIEW IN ULTRA-WIDEBAND SYSTEMS 审中-公开

    公开(公告)号：US20180062981A1

    公开(公告)日：2018-03-01

    申请号：US15246863

    申请日：2016-08-25

    Applicant: ZIH CORP.

    Inventor： Edward A. Richley ,  Aitan Ameti

    IPC: H04L12/725 ,  H04L12/26 ,  H04W72/08

    CPC classification number: H04L45/3065 ,  H04B1/06 ,  H04L43/106 ,  H04L43/16 ,  H04W72/082

    Abstract: Methods and systems are described for generating a first filtered signal by passing signal energy in a first radio frequency (RF) spectral band associated with a signaling bandwidth of an ultra-wideband (UWB) RF signaling system, generating a second filtered signal by passing signal energy in a second RF spectral band associated with the signaling bandwidth of the UWB RF signaling system, generating a plurality of digitized streams of pulses by identifying RF pulses in a respective filtered signal above a respective predetermined threshold, generating at least one time-stamped tag data packet, based on decoding a valid over-the-air packet corresponding to a plurality of RF pulses received according to a known burst pattern, selecting a time-stamped tag data packet from the at least one received time-stamped tag data packet, formulating a network data packet based on the selected time-stamped tag data packet, and outputting the network data packet.

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