| 摘要 |
A device (20) with wireless data connectivity comprising:
- a receiving module (21) adapted to receive and decode an information packet (100) transmitted or broadcasted by a wireless access point (10), comprising a transmission power value (102);
- a signal strength measuring module (22) adapted to measure a strength (103) of a signal (104) transmitted by the wireless access point (10); and
- a distance calculating module (23) adapted to calculate the difference (201) between the transmission power value (102) and the strength (103), and to calculate a distance (500) between the device (20) and the wireless access point (10). |
