Understanding Power and Channel Assignment
To achieve the desired network performance of the 802.11 radios, you can configure the access point with power and channel settings. The available power and channel settings depend on country code, regulatory domain requirements, and radio mode.
For 802.11a radios, if the regulatory domain requires radar detection on the channel, the dynamic frequency selection (DFS) and transmit power control (TPC) features of 802.11h are activated. DFS is a mechanism that requires wireless devices to share spectrum and avoid co-channel operation with radar systems in the 5-GHz band. DFS requirements vary based on the regulatory domain, which is determined by the country code setting of the access point. Each regulatory domain defines a standard, which specifies the types of waveforms that must be detected as well as the threshold and timing requirements. For example, the European Union Telecommunications Institute (ETSI) standard EN 301 893 V1.3.1 defines the DFS requirements for countries in the ETSI domain. The Federal Communications Commission (FCC) standard FCC 06-96 defines these requirements for FCC countries such as the USA. The AX411 Access Point supports the requirements defined in these standards and also allows the administrator to change the country code configuration from one regulatory domain to another.
