Introduction

                 DFS is Dynamic Frequency Selection, which is a function of using 5 GHz Wi-Fi frequencies that are generally reserved for radar, such as military radar, satellite communication, and weather radar. The DFS channels vary from country to country. The main benefit to use DFS channels is to increase the number of Wi-Fi channels. It is legally required Channel Availability Check process to prevent electromagnetic interference the 5 GHz frequency with the radar. If any radar signal detects, it will switch from DFS channel to non-DFS channel automatically(If driver have DFS support) .

Scope

              The scope of this work is to integrate and validate the DFS Feature in RPI reference platforms.This document covers only integration not validation.

Target Audience  

• RDK-B Operators
• RDK-B SoC Vendors
• RDK-B OEM's
• RDK-B Application Vendors
• RDK-B System Integrators 

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High Level Design

TR-181 Data Model Parameters

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Feature Validation

                    TBD - We didn't validate this feature with RADAR signals   .

Limitations

                          This rtl88x2bu driver doesn't have support of channel switch  functionthe channel switch support. So, we need to do the re-enable of AP/Radio whenever we switching the new channel .

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