LANconfig: Wireless LAN / General / Physical WLAN settings / Performance
WEBconfig: LCOS menu tree / Setup / Interfaces / WLAN / Performance
- TX burst Enables/prevents packet bursting for increasing throughput. Bursting leads to less fairness on the medium.
- Hardware compression Allows or prohibits the hardware packet compression.
- QoS according to 802.11e With the extension to the 802.11 standard, 802.11e, Quality of
Service can be provided for transfers via WLAN. Among others, 802.11e supports the
prioritization of certain data-packet types. This extension is an important basis for the
use of voice applications in WLANs (Voice over WLAN, VoWLAN). The WiFi alliance certifies
products that support Quality of Service according to 802.11e, and refer to WMM (WiFi
Multimedia, formerly known as WME or Wireless Multimedia Extension). WMM defines four
categories (voice, video, best effort and background) which make up separate queues to be
used for prioritization. The 802.11e standard sets priorities by referring to the VLAN
tags or, in the absence of these, by the DiffServ fields of IP packets. Delay times
(jitter) are kept below 2 milliseconds, a magnitude which is inaudible to the human ear.
802.11e controls access to the transfer medium with EDCF, the Enhanced Distributed
Coordination Function.
Note: Priorities can only be set if the WLAN client and the access point both support 802.11e or WMM, and also if the applications are able to mark the data packets with the corresponding priorities.