System information

 Wi-Fi Multimedia

Working Principles of Basic Functions

Wi-Fi Multimedia

 Wi-Fi Multimedia (WMM) is an optional Wi-Fi Alliance interoperability

certification, based on Enhanced Distributed Channel Access (EDCA) of the

IEEE 802.11e standard.



WMM provides basic Quality of service (QoS) features to IEEE 802.11

networks, multimedia applications including voice, video data could get

higher priority.

 Devices which pass the Wi-Fi WMM certification are guaranteed to work with

each other

 To make WMM works, both AP and client have to support it.

Normal data gets lower

priority and is transmitted

Support WMM

priority and is transmitted

after voice data

Support WMM

Voice data gets higher priority

and is transmitted firstly