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AT-TQ2403 - Management Software - User's Guide

 

 

 

 

 

 

 

 

 

Field

Description

 

 

Queue

Queues are defined for different types of data transmitted from

 

 

 

station-to-AP:

 

 

 

Data 0 (Voice)

 

 

 

Low latency and guaranteed bandwidth. Time-sensitive data such as VoIP

 

 

 

should be sent to this queue.

 

 

 

Data 1(Video)

 

 

 

Guaranteed bandwidth. Time-sensitive video data and any streams that

 

 

 

have a fixed bandwidth should be sent to this queue.

 

 

 

Data 2 (best effort)

 

 

 

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 (Inter-Frame Space)

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

 

 

 

milliseconds) for data frames.

 

 

 

 

 

 

cwMin (Minimum

This parameter is input to the algorithm that determines the initial

 

 

Contention Window)

random backoff wait time ("window") for retry of a transmission.

 

 

 

The value specified here in the Minimum Contention Window is the

 

 

 

upper limit (in milliseconds) of a range from which the initial random

 

 

 

backoff wait time is determined.

 

 

 

The first random number generated will be a number between 0 and the

 

 

 

number specified here.

 

 

 

If the first random backoff wait time expires before the data frame is sent,

 

 

 

a retry counter is incremented and the random backoff value (window) is

 

 

 

doubled. Doubling will continue until the size of the random backoff

 

 

 

value reaches the number defined in the Maximum Contention Window.