ZyXEL Communications P-324 User's Guide download pdf (Page 147)

P-2602HWNLI User’s Guide

Chapter 9 Wireless LAN 147

9.7 WMM QoS

WMM (Wi-Fi MultiMedia) QoS (Quality of Service) allows you to prioritize wireless traffic

according to the delivery requirements of individual services.

WMM is a part of the IEEE 802.11e QoS enhancement to certified Wi-Fi wireless networks.

9.7.1 WMM QoS Example

When WMM QoS is not enabled, all traffic streams are given the same access throughput 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.

When WMM QoS is enabled, the streams are prioritized according to the needs of the

application. You can assign different priorities to different applications. This prevents

reductions in data transmission for applications that are sensitive.

9.7.2 WMM QoS Priorities

The following table describes the priorities that you can apply to traffic that the ZyXEL

Device sends to the wireless network.

Apply Click Apply to save your changes to the ZyXEL Device.

Cancel Click Cancel to reload the previous configuration for this screen.

Table 45 MAC Address Filter

LABEL DESCRIPTION

Table 46 WMM QoS Priorities

PRIORITY LEVELS:

Highest Typically used for voice traffic or video that is especially sensitive to jitter

(variations in delay). Use the highest priority to reduce latency for improved voice

quality.

High Typically used for video traffic which has some tolerance for jitter but needs to be

prioritized over other data traffic.

Mid Typically used for traffic from applications or devices that lack QoS capabilities.

Use mid priority for traffic that is less sensitive to latency, but is affected by long

delays, such as Internet surfing.

Low This is typically used for non-critical “background” traffic such as bulk transfers

and print jobs that are allowed but that should not affect other applications and

users. Use low priority for applications that do not have strict latency and

throughput requirements.

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ZyXEL Communications P-324 User's Guide Page 147