User Manual

Chapter 19: Quality of Service (QoS)
Configuring AP EDCA Parameters
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Psion Teklogix 9160 Wireless Gateway User Manual
19.2.1 Configuring AP EDCA Parameters
AP Enhanced Distributed Channel Access (EDCA) Parameters affect traffic
flowing from the access point to the client station.
Field Description
Queue Queues are defined for different types of data transmitted from AP-to-station:
Data 0 (Voice)
High priority queue, minimum delay. Time-sensitive data such as VoIP and streaming media are
automatically sent to this queue.
Data 1(Video)
High 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 174.
AIFs
(Inter-Frame Space)
The Arbitration Inter-Frame Spacing (AIFs) specifies a wait time (in milliseconds) for
data frames.
Valid values for AIFs are 1 through 255 .
For more information, see “EDCF Control Of Data Frames And Arbitration Interframe Spaces”
on page 176.
Table 19.1 AP EDCA Parameters