Without Quality of Service QoS , all applications running on different devices have equal opportunity to transmit data frames. That works well for data traffic from applications such as web browsers, file transfers, or email, but it is inadequate for multimedia applications. Voice over Internet Protocol VoIP , video streaming, and interactive gaming are highly sensitive to latency increases and throughput reductions, and require QoS.
WMM defines four access categories voice, video, best effort, and background that are used to prioritize traffic to provide enhanced multimedia support. WMM-Power Save is a more finely tuned power save mechanism which draws on a variety of tools to manage power consumption. In legacy power save, the driver decided when to transmit data, while in WMM-Power Save, the application makes the determination about when to transfer data.
Typically used to send time-sensitive data such as video and other streaming media. Best Effort 2 —Medium priority queue, medium throughput and delay. Most traditional IP data is sent to this queue.
WMM is a required feature for WMM Power Save is optimized for latency-sensitive applications such as voice, audio, or video, but benefits any Wi-Fi device. With WMM Power Save, the same amount of data can be transmitted in fewer frames in a shorter time, while enabling the Wi-Fi device to preserve power in a low-power, dozing state in between transmissions. Power save uses mechanisms from Products targeted for power-critical applications such as mobile phones, smart phones, and other portable power devices typically use WMM Power Save.
The underlying concept of WMM Power Save is that the client triggers the release of buffered data from the access point by sending an uplink data frame. Upon receipt of that data trigger frame, the access point releases previously buffered data stored in each of its four queues.
Queues can be configured to be either trigger enabled receipt of a data frame corresponding to each queue acts as a trigger , or delivery enabled data stored in all queues is released upon receipt of a frame.
WMM operates by dividing traffic into four access categories: background, best effort, video, and voice. Best effort WMM —Allocates bandwidth or best effort traffic such as traffic from legacy devices or traffic from applications or devices that do not support QoS.
Video WMM — Allocates bandwidth for video traffic generated from video streaming. Voice WMM — Allocates bandwidth for voice traffic generated from the incoming and outgoing voice communication.
Click Next and complete the configuration as required.
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