Presenting ARM
In this post, that is a part of a serie of post that discuss how Wlan to radio ressources management, we talk of Aruba way of doing it.
The figure shows a simple wlan network of 6 AP or access points. This is heatmap showing that radio signal is very strong (in red) nearest to the AP and weak too fare from them (in blue).
Aruba’s way of doing radio resource management is called Adaptive Radio Management or ARM and is responsible specifically of transmit power management and planning of radio channels for Wlan (WIFI) access points.
ARM processes and maintains two measures for every channel : a coverage index and an interference index [2] [3].
TPC…
ARM processes the Transmit power control or TPC over a given channel based mainly on the coverage index.
Still that both indexes, coverage and interferance, are processed by the controller (which is a central intelligence equipement physical or logical that associates all the information from all the AP belonging the same domain, process it in order to optimize the indexes for the best overall network operation), in a controller-based architecture also called WLC-based, and matched to access points per channel. The access points are configured automatically by the controller (WLC) to match the already processed radio plan: what channel to use by each AP and at what power… this configuration is consistent because it is handled solely by the controller and also, dynamic because it changes overtime!
