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How will the lawnmower know where it is with just WiFi?
by gee_totes 11y ago
How will the lawnmower know where it is with just WiFi?
- kstenerud 11y agoThe same way it would know where it is with the 6240-6740 MHz beacons.
- oh_sigh 11y agoThe beacons probably output a continuous wave of a certain amplitude at that frequency. This would be classed as interference on at least the wifi spectrums so it is not allowed.
- kstenerud 11y agoThat's why you send actual 802.11 messages instead of a continuous wave.
- oh_sigh 11y agoAnd how do you determine your location based on an 802.11 message?
- kstenerud 11y agoThe same way you determine a location based on any regularly occurring radio signal (in fact, the same way they propose to determine location in their requested spectrum). The only reason to encode a proper 802.11 message would be so as not to interfere with other devices in range.
- snowwrestler 11y agoBy analyzing differentials in the signals from each beacon, which is how WiFi positioning systems work now. http://en.wikipedia.org/wiki/Wi-Fi_positioning_system http://en.wikipedia.org/wiki/Wi-Fi_positioning_system Anyway, WiFi actually operates in unlicensed spectrum, not in WiFi-specific spectrum, so continuous carrier waves would be legal too.