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Enhanced distributed channel access (edca), Sta edca table and ap edca table – Proxim ORiNOCO AP-700 User Manual

Page 83

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Performing Advanced Configuration

AP-700 User Guide

QoS

83

Enhanced Distributed Channel Access (EDCA)

WME uses Enhanced Distributed Channel Access, a prioritized CSMA/CA access mechanism used by WME-enabled clients/AP in a WME
enabled BSS to realize different classes of differentiated Channel Access.
A wireless Entity is defined as all wireless clients and APs in the wireless medium contending for the common wireless medium. EDCA uses
a separate channel access function for each of the Access Categories (Index) within a wireless entity. Each channel access function in a
wireless entity that contends for the wireless medium as if it were a separate client contending for the wireless medium. Different channel
access functions in a given Wireless Entity contend among themselves for access to the wireless medium in addition to contending with other
clients.

STA EDCA Table and AP EDCA Table

This page is used to configure the client (STA) and AP Enhanced Distributed Channel Access (EDCA) parameters.
The EDCA parameter set provides information needed by the client stations for proper QoS operation during the wireless contention period.
These parameters are used by the QoS enabled AP to establish policy, to change policies when accepting new stations or new traffic, or to
adapt to changes in the offered load. The EDCA parameters assign priorities to traffic types where higher priority packets gain access to the
wireless medium more frequently than lower priority packets.

NOTE

We have defined default recommended values for EDCA parameters; we recommend not modifying EDCA parameters unless
strictly necessary.

Perform the following procedure to configure the Station and AP EDCA tables.
1. Click Configure > QoS > EDCA.

Figure 4-30 EDCA Tables