User's Manual

U-MEDIA Communications, Inc.

U-MEDIA Proprietary

DO NOT COPY

HT Mode

Mixed Mode: In this mode packets are transmitted with a preamble compatible with the legacy

802.11g/n, the rest of the packet has a new format. In this mode the receiver shall be able to

decode both the Mixed Mode packets and legacy packets.

Green Field: In this mode high throughput packets are transmitted without a legacy compatible

part.

Channel Bandwidth

Set channel width of wireless radio.

20 Channel Width = 20 MHz

20/40 Channel Width = 20/40 MHz (additional channel provides better performance)

Guard Interval

Support Short/Long GI, the purpose of the guard interval is to introduce immunity to

propagation delays, echoes and reflections, to which digital data is normally very sensitive.

฀ Long

฀ Auto

Using “Auto” option can increase throughput. However, it can also increase error rate in some

installations, due to increased sensitivity to radio-frequency reflections. Select the option that works

best for your installation.

MCS

Fix MCS rate for HT rate. (Auto, 0~32)

The Modulation and Coding Scheme (MCS) is a value that determines the modulation, coding

and number of spatial channels.

This parameter represents transmission rate. By default (Auto) the fastest possible transmission rate

will be selected. You have the option of selecting the speed if necessary.

4.2.5 QoS

WMM (Wireless Multi-Media)

use this feature allows wireless devices to take advantage of the wireless environment over other wireless

devices.

WMM Power Saving

An option that allows wireless clients such as notebooks or Laptops to save battery life by sending less

transmission during idle times. Add a check mark to enable this option.

PS Mode

Used for specific application when using WMM Power Saving mode is enabled, use this feature to help with

Quality of Service (QoS) settings; these settings are polled by the priority given to the option in this section.

AC_BE= Best Effort

AC_BK= Background

AC_VI= Video signal

AC_VO=Voice signal

The options allow users to select which Access Category is needed to turn on while the power saving mode

is enabled.