Wi-Fi Multimedia (WMM) is a Wi-Fi Alliance interoperability specification that defines an access category of service delivery for multimedia applications and voice over IP (VoIP) applications. WMM prioritizes wireless traffic based on four access categories: voice, video, best effort (data), and background (best effort + low latency).

 

WMM is available with the IEEE 802.11e standard and is used by wireless LAN (WLAN) access points (APs) to prioritize network traffic. Cisco, Ruckus Wireless, Aruba, Meru Networks, Rivera, Xirrus, and many other AP manufacturers have implemented WMM into their AP product lines.

 

Today, Wi-Fi routers can perform a variety of functions in addition to basic ones, and they are more advanced than ever before. Manufacturers of wireless network equipment are striving to meet current criteria while also incorporating the most recent technology to improve multimedia programs' video quality, among other things.

 

To meet the demands of these features on wireless network devices, some manufacturers have incorporated the IEEE 802.11e standard specification into their products. The IEEE approved that version in March 2004 and today it is commonly referred to as "WMM".

 

Wi-Fi Multimedia (WMM) enables several applications that require a minimal delay, such as video or audio streaming. WMM provides a mechanism for admission control, traffic classification, prioritization for different types of services, access point coordination with client devices, and power-saving modes for Wi-Fi adapters having QoS support.

 

Why do we need this feature?

The availability of the WMM parameter on a router is no great surprise to anyone. However, when users discover the capability in the network device settings, not all of them are aware of what it is. The "Wi-Fi Multimedia" standard aims to provide acceptable service in a wireless network (GoS) and may be used to prioritize voice or video traffic over other data. You can also favor non-guaranteed traffic from devices that do not support GoS using this feature. As a result, this function intends to improve connection efficiency at the expense of multimedia files and game content benefits.

 

The possibility of configuration is only available on routers that support WMM; older equipment is not supposed to have such functionality. The protocol WI-fi Multimedia, based on the standard IEEE 802.11e, provides greater bandwidth (speed above 54 Mbit / s), multimedia stability and reduces the number of errors appearing in the applications.

The main advantages and disadvantages of using the feature

With both benefits and drawbacks, routers with the WI-Fi Multimedia feature are available. WMM technology provides routers with several advantages because of its support:

  • Increased wireless network efficiency.
  • Support for the standard is carried out by most manufacturers of modern network equipment.
  • Optimization of data packet transmission to increase traffic speed for multimedia files, in particular video and voice signals.
  • Increases the battery life of devices connected to the WI-Fi network and using batteries as a power source.
  • Reducing the number of errors.

The disadvantages may include the following factors:

 

  • The standard is not supported by older models of network equipment.
  • There is no possibility of the full-fledged configuration of absolute priorities for the traffic of video and audio signals.

More features

Manufacturers are expanding equipment functionality and adding new features to fulfill the demands of today's user who frequently works with multimedia files. Many sophisticated routers now include extra features in addition to basic operations, as shown by this picture.

  • WMM DLS. Infrastructure mode provides signal quality management between equipment.
  • WMM APSD. Power saving mode is used to manage and control the power of wireless devices connected to the network. Increase the battery life of devices by supporting APSD in smartphones, tablets, laptops, etc.

Conclusion.

To summarize, the WMM standard is very important due to the need for wireless network traffic optimization. Whether you are watching a video or playing an online game, this new feature can significantly improve your experience by reducing delays that occur in internet connection.

 

Although using Wi-Fi Multimedia does not necessarily deliver better quality multimedia file transmissions, it has still been gaining popularity among users of modern laptops and smartphones.