802.11ac Migration Guide

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Aruba Migration Guide



Aruba Migration Guide

Table of Contents
Introduction 802.11AC basics Why 802.11ac? 802.11ac technology overview Backward compatibility RF spectrum Multistation MAC throughput > 1 Gbps 256 QAM Wider channels More spatial streams Downlink multi-user MIMO Pros of 802.11ac Cons of 802.11ac Strategy and planning for 802.11ac migration Site planning basics Planning process Minimum requirements and actions to implement 802.11ac Aruba recommendations for 802.11ac migration General Capacity RF planning Installation Wireless RF coverage considerations and questionnaire Summary 3 3 3 4 4 4 5 5 5 5 6 6 6 6 6 6 7 8 8 8 8 8 9 10

Aruba Networks, Inc.



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Some 310 billion mobile app downloads are expected by Q1/2016, and 70% of smartphones will be 802.11acready by Q2/2015. And let’s not forget about tablets – they consume 3.4-times more traffic compared to a smartphone on average. Networks must contend with this higher demand. Enterprises have also grown more reliant on higher bandwidth, latency-sensitive applications. For example, virtual desktop infrastructures (VDI) are characterized by bursty, delay-sensitive traffic because processing occurs in the data center instead of locally. HD video-capable mobile devices are proliferating. And users increasingly rely on them for fast and efficient mobile telepresence. Collaborative programs like Microsoft Lync, Apple FaceTime, WebEx and Citrix GoToMeeting create two-way video traffic across the network. The use of podcasting and streaming has also skyrocketed. It is therefore only natural to see a huge increase in the consumption of multimedia on mobile devices in the residence hall. Due to the pervasiveness of wireless in some environments, the smart classroom has now become virtualized, which allows its capabilities to be delivered anywhere there is capacity to receive it. The 80/20 rule for download and upload direction no longer exists. New app behavior has completely transformed traffic patterns. For example, smartphones synchronize all photos to cloud-based storage when a user walks into a building and connects to a Wi-Fi
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