@baboyero wrote:
Thanks cjoseph. I have read the user guide for this and it does not really say much other that it is used to control the receive sensitivity of the AP. What actual RF or DSP parameter is adjusted when this is tweaked is not mentioned.
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Although still an advanced knob and a very good understanding of RF is needed, Aruba is recommending the configuration of this setting in the Lync VRD released a few months ago. For dense deployments (only), the value should be -10 if using .11n APs and -15 if using .11ac APs. Only mess with this setting if you know what you're doing and have tested the effects of this in your environment as it can have disastrous effects.
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As the common analogy goes, you're putting earmuffs on the AP so that it doesn't hear anything below a threshold. In reality, you're telling the AP to interpret signals below the threshold as noise and allow the AP to transmit rather than wait. The value you input is in dB and is subtracted from the noise floor. So if you're noise floor is -90 and your receive sensitivity is -15, anything below -75 would be ignored. If configured correctly, this can help you with CCI issues in dense deployments.