Wireless Distance Measurement System and Wireless Terminal
    2.
    发明申请
    Wireless Distance Measurement System and Wireless Terminal 失效
    无线距离测量系统和无线终端

    公开(公告)号:US20100183063A1

    公开(公告)日:2010-07-22

    申请号:US12639754

    申请日:2009-12-16

    IPC分类号: H04B17/00

    CPC分类号: H04B17/318 H04B17/27

    摘要: A wireless distance measurement system and wireless terminal improve the accuracy of distance measurement when the UWB communication scheme is used. In wireless terminal 200, a route of signals varies between a distance measuring operation and a synchronization establishing operation, and, when the distance measuring operation is performed, a detection result is inputted to comparator 208 without passing through integrator 204. By this means, the distance measuring operation of wireless terminal 200 does not involve integration processing, so that delay time due to integration processing is not produced and, consequently, it is possible to improve the accuracy of distance measurement. Further, the distance measuring operation uses the integration result acquired integrator 204 for a comparison reference voltage used in comparator 208. By this means, the integration result removing noise signal components from a detection signal is used for the comparison reference voltage, so that the comparison reference voltage is optimized. Consequently, it is possible to further improve the accuracy of distance measurement.

    摘要翻译: 当使用UWB通信方案时,无线距离​​测量系统和无线终端提高距离测量的准确性。 在无线终端200中,信号路径在距离测量操作和同步建立操作之间变化,并且当执行距离测量操作时,检测结果被输入到比较器208而不经过积分器204.通过这种方式, 无线终端200的距离测量操作不涉及积分处理,因此不会产生由于积分处理而引起的延迟时间,因此能够提高距离测量的精度。 此外,距离测量操作使用积分结果获取积分器204用于比较器208中使用的比较参考电压。通过这种方式,从检测信号中去除噪声信号分量的积分结果用于比较参考电压,使得比较 参考电压被优化。 因此,可以进一步提高距离测量的精度。

    WIRELESS DISTANCE MEASUREMENT SYSTEM AND WIRELESS DISTANCE MEASUREMENT METHOD
    3.
    发明申请
    WIRELESS DISTANCE MEASUREMENT SYSTEM AND WIRELESS DISTANCE MEASUREMENT METHOD 失效
    无线距离测量系统和无线距离测量方法

    公开(公告)号:US20100159842A1

    公开(公告)日:2010-06-24

    申请号:US12486707

    申请日:2009-06-17

    IPC分类号: H04B17/00

    摘要: A wireless distance measurement system and a wireless distance measurement method that measure the distance between a base station and a terminal without clock synchronization between a plurality of base stations, and without requiring input of the position relationships between a plurality of base stations. Clock phase shift section (210) shifts a clock that is used to generate transmission pulses is phase-shifted by a specific amount every 100 nanoseconds, and A/D conversion section (211) converts a signal re-radiated from terminal (103) to a digital signal using the shifted clock. Correlation calculation section (212) performs correlation calculation between the digital signal and the transmission pulse and creates a delay profile by adding digital signals in the shifted phases between same phases, and incoming wave detection section (213) detects peaks of the pulses in the delay profile. Distance calculation section (214) calculates the distance to terminal (103) based on the timings to transmit the pulses and the timings to detect peaks of the pulses.

    摘要翻译: 无线距离测量系统和无线距离测量方法,其测量基站和终端之间的距离,而不需要在多个基站之间的位置关系的输入,而不需要在多个基站之间进行时钟同步。 时钟相移部(210)移位用于产生发送脉冲的时钟每100纳秒相移特定量,A / D转换部(211)将从终端(103)重新发射的信号转换为 使用移位时钟的数字信号。 相关计算部(212)进行数字信号与发送脉冲之间的相关运算,并通过在相位相位之间移位移相的数字信号相加产生延迟分布,入射波检测部(213)检测出延迟中的脉冲的峰值 个人资料 距离计算部(214)基于发送脉冲的定时和检测脉冲峰值的定时,计算与终端(103)的距离。

    FRAME LOSS MEASUREMENT METHOD, SYSTEM, AND APPARATUS
    4.
    发明申请
    FRAME LOSS MEASUREMENT METHOD, SYSTEM, AND APPARATUS 有权
    框架损失测量方法,系统和装置

    公开(公告)号:US20100302949A1

    公开(公告)日:2010-12-02

    申请号:US12845252

    申请日:2010-07-28

    申请人: Takashi FUKAGAWA

    发明人: Takashi FUKAGAWA

    IPC分类号: H04L12/26

    摘要: The number of data frames transmitted between two apparatuses is counted by a transmission counter, while the number of received frames is counted by a reception counter. When an OAM frame for frame loss measurement is transmitted, the value of the transmission counter is cached in a cache memory. At the time of generation of an OAM frame at an OAM frame generation unit, the value of the cache memory is used so as to generate an OAM frame carrying the value of the transmission counter at the time of transmission of the OAM frame transmitted previously. The frame loss is calculated from the difference of the value of the transmission counter carried in the OAM frame from the previous value and the difference of the value of the reception counter at the time of reception of the previous previous OAM frame from the previous value.

    摘要翻译: 通过发送计数器对在两个设备之间发送的数据帧的数量进行计数,而接收到的帧的数量由接收计数器计数。 当发送用于帧丢失测量的OAM帧时,发送计数器的值被缓存在高速缓冲存储器中。 在OAM帧生成单元生成OAM帧时,使用高速缓冲存储器的值,以便在发送先前发送的OAM帧时生成携带发送计数器的值的OAM帧。 从OAM帧中携带的发送计数器的值与先前值的差值以及在先前的OAM帧的接收时的接收计数器的值与先前值的差计算出帧丢失。