Dell PowerConnect W-IAP3WN, Руководство пользователя

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Dell PowerConnect W-Series Instant Access Point 6.1.3.4-3.1.0.0
| User Guide Adaptive Radio Management |
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Chapter 17
Adaptive Radio Management
Adaptive Radio Management (ARM) is a radio frequency management technology that optimizes WLAN
performance even in the networks with highest traffic by dynamically and intelligently choosing the best 802.11
channel and transmitting power for each IAP in its current RF environment. ARM works with all standard clients,
across all operating systems, while remaining in compliance with the IEEE 802.11 standards. It does not require
any proprietary client software to achieve its performance goals. ARM ensures low-latency roaming, consistently
high performance, and maximum client compatibility in a multi-channel environment. By ensuring the fair
distribution of available Wi-Fi bandwidth to mobile devices, ARM ensures that data, voice, and video
applications have sufficient network resources at all times. ARM allows mixed 802.11a, b, g, and n client types to
inter operate at the highest performance levels.
ARM Features
This section describes ARM features that are available in Dell Instant.
Channel or Power Assignment
This feature automatically assigns channel and power settings for all the IAPs in the network according to changes
in the RF environment. This feature automates many setup tasks during network installation and during ongoing
operations when RF conditions change.
Voice Aware Scanning
This feature stops an IAP supporting an active voice call from scanning for other channels in the RF spectrum.
The IAP resumes scanning when no more active voice calls are present on that IAP. This significantly improves
the voice quality when a call is in progress while simultaneously delivering automated RF management functions.
Load Aware Scanning
This feature dynamically adjusts scanning behavior to maintain uninterrupted data transfer on resource intensive
systems when the network traffic exceeds a predefined threshold. The IAPs resume complete monitoring scans
when the traffic drops to the normal levels.
Band Steering Mode
This feature moves dual-band capable clients to stay on the 5 GHz band on dual-band IAPs. This feature reduces
co-channel interference and increases available bandwidth for dual-band clients because there are more channels
on the 5 GHz band than on the 2.4 GHz band.
Band steering supports the following three different band steering modes:

Prefer 5Ghz — If you configure the IAP to use prefer-5GHz band steering mode, the IAP steers the client to
5G band (if the client is 5G capable) but will let the client connect on the 2.4G band if the client persists in
2.4G association attempts.

Force 5Ghz — When the IAP is configured in force-5GHz band steering mode, the IAP forces 5Ghz-capable
IAPs to use that radio band.

Balance Bands — In this band steering mode, the IAP tries to balance the clients across the two radios in order
to best utilize the available 2.4G bandwidth. This feature takes into account the fact that the 5Ghz band has
more channels than the 2.4Ghz band, and that the 5Ghz channels operate in 40MHz while the 2.5Ghz band
operates in 20MHz.