User's Manual

49
FragmentSize Alargedataframeisfragmentedintoseveralfragmentseachofsizeequal
tofragmentthreshold.Bytuningthefragmentthresholdvalue,wecanget
varyingfragmentsizes.
ShortGI(GuardInterval) AGIisaperiodoftimebetweensymboltransmissionthatallows
reflections(frommultipath)fromthepreviousdatatransmissiontosettle
beforetransmittinganewsymbol.The802.11ndraftspecifiestwoguard
intervals:400ns(short)and800ns(long).Supportofthe400nsGIis
optionalfor
transmitandreceive.Thepurposeofaguardintervalisto
introduceimmunitytopropagationdelays,echoes,andreflectionsto
whichdigitaldataisnormallyverysensitive.
Aggregation Apartofthe802.11nstandardthatallowssendingmultipleframesper
singleaccesstothemediumbycombiningframestogetherintoonelarger
frame.Itcreatesthelargerframebycombiningsmallerframeswiththe
samephysicalsource,destinationendpoints,andtrafficclass(QoS)into
onelargeframe
withacommonMACheader
AggregatedFramesNumber Determinesthenumberofframescombinedinthenewlargerframe.
MaximumAggregatedSize Determinesthesize(inbytes)ofthelargerframe.
Tx/RxChainMask Displaysthenumberofindependentspatialdatastreamsthedeviceis
transmitting(TX)andreceiving(RX)simultaneouslywithinonespectral
channelofbandwidth.Multiplechainsincreasedatatransferperformance
significantly
WMMCapable EnablethefeaturetoaccessorDisableit.
WMMConfiguration DisplaystheWMMParametersofstationandAccessPoint
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