Client device az egy kicsit más tészta. Elolvastad, mit jelent a client device definíciója?
"A client device is defined in § 15.202 as “a device operating in a mode in which the transmissions of
the device are under control of the master. A device in client mode is not able to initiate a network.”
Any device meeting the definition of a client as specified in § 15.202 may have the ability to operate
on other regulatory domain frequencies if it is under the control of a certified master device.
Applications for such client devices must clearly include information that the device performs only
passive scanning to detect a master device prior to initiate a transmission. "
Az AP/router az kérlek master device.
"As discussed above, a client device cannot initiate, or be configured to initiate, any transmission
including probes, beacons, or ad hoc mode transmissions. Many devices referred to by the Wi-Fi
industry as "client devices" may not meet the definition of a § 15.202 client. Such devices must be
approved as master devices on the bands for operation in U.S., and must operate in accordance with
the grant conditions. "
Ezen kívül amit te linkeltél, az csak Channel 12/13-ra vonatkozik, nem minden client device-ra.
És azért kell tudnia, hogy hol van, mert ő önmagában nem hálózati eszköz, csak master device-ra kapcsolódik, egy passzív eszköz. És valahogy tudnia kell, hogy mekkora adóteljesítménye lehet. És ez lehet GeoIP is, sőt a mellette lévő AP-kből is nyerheti az információt: "Country information derived from multiple adjacent access points (for example using
IEEE Std 802.11d provisions) may be permitted on case-by-case basis,"