Position determination device for terminal

A system for determining a position of a terminal, the system comprising:

• a beacon for transmitting a beacon signal;
• a terminal for receiving the beacon signal;
• a first sensor attached to the beacon and configured to sense movement of the beacon and to output a first sensing signal indicative of the sensed movement of the terminal;
• a second sensor attached to the beacon and configured to sense movement of the beacon and to output a second sensing signal indicative of the sensed movement of the beacon,
• wherein the beacon is configured to transmit the beacon signal when the outputted sensing signal indicates that movement of the beacon is being sensed.

A system for determining a position of a terminal, the device comprising:

• a first beacon for transmitting a first beacon signal;
• a second beacon for receiving the first beacon signal and for transmitting a second beacon signal after a first waiting time from the reception of the first beacon signal by the second beacon;
• and
• a terminal for receiving the first beacon signal and the second beacon signal, the first beacon signal being received by the terminal at a first reception time from the transmission of the first beacon signal and the second beacon signal being received by the terminal at a second reception time from the transmission of the second beacon signal,
• wherein the first beacon signal is transmitted from the first beacon to the second beacon during a first propagation time, and
• wherein the terminal is configured to
• determine a distance between the first beacon and the terminal based on the first reception time, and
• determine a distance between the second beacon and the terminal by reflecting the first propagation time and the first waiting time to the second reception time.