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Chapter 19: Quality of Service (QoS)
Configuring Station EDCA Parameters
194
Psion Teklogix 9160 G2 Wireless Gateway User Manual
Disabling WMM will deactivate QoS control of station EDCA parameters on
upstream traffic flowing from the station to the access point
With WMM disabled, you can still set parameters on the downstream traffic flowing
from the access point to the client station (AP EDCA parameters).
• To disable WMM extensions, click Disabled.
• To enable WMM extensions, click Enabled.
19.2.3 Configuring Station EDCA Parameters
Station Enhanced Distributed Channel Access (EDCA) Parameters affect traffic
flowing from the client station to the access point.
Field Description
Queue
Queues are defined for different types of data transmitted from station-to-AP:
Data 0 (Voice)
Highest priority queue, minimum delay. Time-sensitive data such as VoIP and streaming media
are automatically sent to this queue.
Data 1(Video)
Highest priority queue, minimum delay. Time-sensitive video data is automatically sent to
this queue.
Data 2 (Best Effort)
Medium priority queue, medium throughput and delay. Most traditional IP data is sent to
this queue.
Data 3 (Background)
Lowest priority queue, high throughput. Bulk data that requires maximum throughput and is not
time-sensitive is sent to this queue (FTP data, for example).
For more information, see “QoS Queues And Parameters To Coordinate Traffic Flow” on
page 184.
AIFS
(Inter-Frame Space)
The Arbitration Inter-Frame Spacing (AIFS) specifies a wait time (in milliseconds) for data
frames.
For more information, see “EDCF Control Of Data Frames And Arbitration Interframe Spaces”
on page 186.
Table 19.4 Station EDCA Parameters