Software Technology for Path crossing detection based on wireless signals ‘ travel time

NEC Corporation Of America (Herzlia, IL)

The systems and techniques are based on Round Trip Time (RTT), which is measured for wireless signals that are sent between an initiator wireless transceiver and a responder wired transceiver. The boundary line is drawn by using straight boundaries. The wireless transmitter wireless transceiver transmits an wireless probe(s) to the wireless transmission of the responder. In response, the responder wireless transmission calculates an RTT that combines an estimated travel time for wireless probe signals with the time of travel for wireless response signals. Then it compares the RTT with the reference RTT that is calculated for a wireless probe as well as the its wireless response signal in clear transmission paths while the boundary line is free of obstacles. Based on the deviations in the RTT from the reference RTT, it determines

In certain embodiments the present invention relates to detecting crossings of boundary lines (paths) and specifically, but not exclusively to the detection of crossings of boundary lines based wireless signals travel time measurements using wireless transceivers.

Numerous systems and applications may need to be able to detect objects that are able to cross boundaries. These applications and systems could include security and alarm systems that can detect intruders security applications for people that track people entering or leaving designated areas, or the like. In another example, these systems and application may comprise monitoring and control of automatic systems, for instance, autonomousvehicles designed to operate within a particular area, or similar.

Wireless networking, particularly Wireless Local Area Network (WLAN), for example, Wi-Fi is a key element in modern-day communication. This is why WLAN infrastructures and platforms are widely deployed in numerous places, from offices and homes, via organizations and facilities to transportation vehicles, airports as well as smart cities.

Paving the way to make use of the widely used and widely accessible wireless network infrastructure devices and instrument to enable border lines crossing detection application is therefore highly desirable.

Click here to view the patent on USPTO website.

 

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