METHODS AND APPARATUS FOR REFERENCE REGENERATION IN REAL TIME LOCATION SYSTEMS

    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.

    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.

    SYSTEMS, APPARATUS AND METHODS FOR VARIABLE RATE ULTRA-WIDEBAND COMMUNICATIONS
    7.
    发明申请
    SYSTEMS, APPARATUS AND METHODS FOR VARIABLE RATE ULTRA-WIDEBAND COMMUNICATIONS 有权
    用于可变速率超宽带通信的系统,装置和方法

    公开(公告)号:US20150356332A1

    公开(公告)日:2015-12-10

    申请号:US14731210

    申请日:2015-06-04

    Applicant: ZIH Corp

    Abstract: Systems, methods, apparatuses, and computer readable media are disclosed for providing variable blink rate ultra-wideband (UWB) communications. Some embodiments may provide for a radio frequency (RF) tag including a motion sensor, processing circuitry, and a UWB transmitter. The motion sensor may be configured to generate one or more motion data values indicating motion of the RF tag. The UWB transmitter may be configured to transmit blink data at variable blink rates. The processing circuitry may be configured to receive the one or more motion data values from the motion sensor, determine a blink rate for the UWB transmitter based on the one or more motion data values, and control the UWB transmitter to wirelessly transmit the blink data at the blink rate. In some embodiments, the RF tag may include a UWB receiver and the blink rate may be controlled remotely by a system.

    Abstract translation: 公开了用于提供可变眨眼速率超宽带(UWB)通信的系统,方法,装置和计算机可读介质。 一些实施例可以提供包括运动传感器,处理电路和UWB发射机的射频(RF)标签。 运动传感器可以被配置为生成指示RF标签的运动的一个或多个运动数据值。 UWB发射器可以被配置为以可变的闪烁速率传输闪烁数据。 处理电路可以被配置为从运动传感器接收一个或多个运动数据值,基于一个或多个运动数据值确定UWB发射机的闪烁速率,并且控制UWB发射机以无线方式将闪烁数据发送到 眨眼率。 在一些实施例中,RF标签可以包括UWB接收机,并且可以由系统远程控制眨眼频率。

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