What is Quality of Service or QOS?
This is required to support wireless multimedia applications in advanced traffic management. QOS enables WiFi access points to prioritize traffic and optimize the way shared network resources are allocated among different applications.
Without QOS all applications running on different devices having equal opportunity to transmit their data frames.
That works well for most data traffic from applications like web browsers file transfers or email but its inadequate when you’re talking about multimedia applications Voice Over IP video streaming and interactive gaming are highly sensitive to latency and jitter and thus increases in throughput reductions. And they so require QOS.