Wi-Fi Multi Media - EnGenius ENH900EXT User Manual

Wi-Fi Multi Media (WMM)
This feature provide QoS (Quality of Service) for prioritizing
multimedia traffic on the network. WMM prioritization
achieves the goal of minimizing delay in a wireless network
for time-sensitive applications such as video streaming.
WMM Parameters: According to version 1.1 of the WMM
specifications by the Wi-Fi Alliance, defines four Access
Category (AC_BE, AC_BK, AC_VI, AC_VO) labels in order to
provide more favorable network access for applications
that are less tolerant of packet delays.
CW: CW (Contention Window) maintains the DCF random
back-off component to help avoid collisions of packets
from the same access category.
AIFS: Arbitration Inter-Frame Spacing (AIFS) in wireless
LAN communications is a method of prioritizing one Access
Class (AC) over the other, such as giving voice or video
priority over email.
54