Technical Reference; Wmm Qos - ZyXEL Communications NWA-3160 User Manual

Chapter 8 Wireless Screen
Table 23 Multiple BSS
LABEL
Enable Roaming
Apply
Reset

8.3 Technical Reference

This section provides technical background information about the topics covered in
this chapter.

8.3.1 WMM QoS

WMM (Wi-Fi MultiMedia) QoS (Quality of Service) ensures quality of service in
wireless networks. It controls WLAN transmission priority on packets to be
transmitted over the wireless network.
WMM QoS prioritizes wireless traffic according to the delivery requirements of the
individual and applications. WMM QoS is a part of the IEEE 802.11e QoS
enhancement to certified Wi-Fi wireless networks.
On APs without WMM QoS, all traffic streams are given the same access priority to
the wireless network. If the introduction of another traffic stream creates a data
transmission demand that exceeds the current network capacity, then the new
traffic stream reduces the throughput of the other traffic streams.
The NWA uses WMM QoS to prioritize traffic streams according to the IEEE 802.1q
or DSCP information in each packet's header. The NWA automatically determines
the priority to use for an individual traffic stream. This prevents reductions in data
transmission for applications that are sensitive to latency and jitter (variations in
delay).
126
DESCRIPTION
Roaming allows wireless stations to switch from one access point to
another as they move from one coverage area to another. Select
this checkbox to enable roaming on the NWA if you have two or
more NWAs on the same subnet.
Note: All APs on the same subnet and the wireless stations
must have the same SSID to allow roaming.
Click Apply to save your changes.
Click Reset to begin configuring this screen afresh.
NWA-3160 Series User's Guide