D-Link Unified Access System User Manual

Table 55. QoS Settings

Field

Description

Max. Burst Length

AP EDCA Parameter Only (The Max. Burst Length applies only to

 

traffic flowing from the access point to the client station.)

 

This value specifies (in milliseconds) the Maximum Burst Length

 

allowed for packet bursts on the wireless network. A packet burst is a

 

collection of multiple frames transmitted without header information.

 

The decreased overhead results in higher throughput and better

 

performance.

 

Valid values for maximum burst length are 0.0 through 999.9..

 

 

WMM Mode

Wi-Fi MultiMedia (WMM) is enabled by default. With WMM

 

enabled, QoS prioritization and coordination of wireless medium access

 

is on. With WMM enabled, QoS settings on the D-Link Unified Access

 

System control downstream traffic flowing from the access point to

 

client station (AP EDCA parameters) and the upstream traffic flowing

 

from the station to the access point (station EDCA parameters).

 

Disabling WMM deactivates QoS control of station EDCA parameters

 

on upstream traffic flowing from the station to the access point

 

With WMM disabled, you can still set some 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.

 

 

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).

 

 

AIFS

The Arbitration Inter-Frame Spacing (AIFS) specifies a wait time (in

(Inter-Frame Space)

milliseconds) for data frames.

 

 

158 © 2001- 2006 D-Link Corporation/D-Link Systems, Inc. All Rights Reserved.

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D-Link DWS 3000 user manual Max. Burst Length, WMM Mode