Transmit Power Calculation Support on 200 Series and 300 Series Access Points

This feature allows calculation of the transmit power of each outgoing 802.11 802.11 is an evolving family of specifications for wireless LANs developed by a working group of the Institute of Electrical and Electronics Engineers (IEEE). 802.11 standards use the Ethernet protocol and Carrier Sense Multiple Access with collision avoidance (CSMA/CA) for path sharing. packet so that Instant AP adheres to the latest regulatory limits. Also, the MIMO Multiple Input Multiple Output. An antenna technology for wireless communications in which multiple antennas are used at both source (transmitter) and destination (receiver). The antennas at each end of the communications circuit are combined to minimize errors and optimize data speed. gain is considered while calculating the transmit power. MIMO Multiple Input Multiple Output. An antenna technology for wireless communications in which multiple antennas are used at both source (transmitter) and destination (receiver). The antennas at each end of the communications circuit are combined to minimize errors and optimize data speed. gain refers to effective increase in EIRP Effective Isotropic Radiated Power or Equivalent Isotropic Radiated Power. EIRP refers to the output power generated when a signal is concentrated into a smaller area by the Antenna. of a packet due to usage of multiple antennae (power gain) and various signal processing techniques such as Cyclic Delay Diversity, transmit beamforming, and so on (correlation gain).

Two new action commands, a-ant-pol and g-ant-pol, are added to configure the antenna polarization for both the radios. The polarization values can be either 0 or 1.

  • 0 indicates that the external antennas are co-polarized.
  • 1 indicates that the external antennas are cross polarized.

A new show command show ap debug power-table is added that displays the following information:

  • Power limit table based on regulatory powers, user configured power, and override powers.
  • Board limit table.
  • A combination of all the above fields to calculate the actual transmit power of the packets.

This feature is supported on 200 Series and 300 Series access points and the command show ap debug power-table does not display any value for 100 Series access points.