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    • 42. 发明申请
    • SYSTEMS AND METHODS OF OFFLOADED POSITIONING FOR DETERMINING LOCATION OF WLAN NODES
    • 用于确定无线局域网位置的放置定位系统和方法
    • WO2014183081A2
    • 2014-11-13
    • PCT/US2014/037573
    • 2014-05-09
    • QUALCOMM INCORPORATED
    • ZHANG, XiaoxinALDANA, Carlos, HoracioHOMCHAUDHURI, SandipCHO, James, Simon
    • H04W64/003G01S5/0205H04W64/00
    • This disclosure includes systems and methods for determining the location of each of a plurality of STAs of a WLAN where an AP measures the round-trip time (RTT) and the angle of arrival (AOA) to each STA from implicit packet exchange, such as data frame and ACK frame. The AP may then report the RTT and AOA measurements to each STA using a dedicated beacon information element (IE) which multicasts RTT and AOA measurements to the STAs. By employing an additional parameter, namely, angle of arrival AOA, a single AP may compute the two-dimensional location of each associated STA. Further, another beacon IE may multicast mapping of the AIDs to MAC addresses so that the associated STAs can understand such mapping for STAs in a network so that one STA may know the location of other STAs. Encryption may be employed to achieve privacy.
    • 本公开包括用于确定WLAN的多个STA中的每一个的位置的系统和方法,其中AP从隐式分组交换测量到每个STA的往返时间(RTT)和到达角(AOA),例如 数据帧和ACK帧。 然后,AP可以使用将RTT和AOA测量多播到STA的专用信标信息元素(IE)向每个STA报告RTT和AOA测量。 通过采用附加参数,即到达角AOA,单个AP可以计算每个相关STA的二维位置。 此外,另一个信标IE可以将AID多播到MAC地址,使得相关联的STA可以理解网络中的STA的这种映射,使得一个STA可以知道其他STA的位置。 可以采用加密来实现隐私。