Chapter 19: Quality of Service (QoS)
Configuring AP EDCA Parameters
192 Psion Teklogix 9160 G2 Wireless Gateway User Manual
Configuring Quality of Service includes:
• “Configuring AP EDCA Parameters” on page192.
• “Enabling/Disabling Wi-Fi Multimedia” on page193.
• “Updating Settings” on page195.
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 V oIP and stream ing media are
automatically sent to this queue.
Data 1(Video)
High priority queue, minimum delay. Time-sen sitive video data is automaticall y 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 Coordina te T raf fic Flow ” on
page184.
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 “ED CF Control Of Data Frames And Arbi tration Interframe Spaces”
on page186.

Table 19.3 AP EDCA Parameters