Dell W-Series 228 Instant 6.4.3.1-4.2 User Guide - Page 250

Chapter 17 Adaptive Radio Management This chapter provides the following information: l ARM Overview on page 250 l Configuring ARM Features on a W-IAP on page 251 l Configuring Radio Settings on page 257 ARM Overview 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 W-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, n, and ac client types to inter operate at the highest performance levels. Channel or Power Assignment The channel or power assignment feature automatically assigns channel and power settings for all the W-IAPs in the network according to changes in the RF environment. This feature automates many setup tasks during network installation and the ongoing operations when RF conditions change. Voice Aware Scanning The Voice Aware scanning feature prevents a W-IAP supporting an active voice call from scanning for other channels in the RF spectrum and allows a W-IAP to resume scanning when there are no active voice calls. This significantly improves the voice quality when a call is in progress and simultaneously delivers the automated RF management functions. By default, this feature is enabled. Load Aware Scanning The Load Aware Scanning feature dynamically adjusts scanning behavior to maintain uninterrupted data transfer on resource intensive systems when the network traffic exceeds a predefined threshold. The W-IAPs resume complete monitoring scans when the traffic drops to the normal levels. By default, this feature is enabled. Monitoring the Network with ARM When ARM is enabled, a W-IAP dynamically scans all 802.11 channels within its 802.11 regulatory domain at regular intervals and sends reports to a Virtual Controller on network (WLAN) coverage, interference, and intrusion detection. ARM Metrics ARM computes coverage and interference metrics for each valid channel and chooses the best performing channel and transmit power settings for each W-IAP RF environment. Each W-IAP gathers other metrics on its ARM-assigned channel to provide a snapshot of the current RF health state. Dell Networking W-Series Instant 6.4.3.1-4.2.0.0 | User Guide Adaptive Radio Management | 250