8
SonicWallSonicPointACeGettingStartedGuide
RefertoRadiofrequencybarriersandRFinterferenceonpage16 fordetailedinformationaboutRFbarriersandinterference.
Toallowmultipleseparatewirelessnetworksinasharedandconfinedspace,theRFmediumisdividedintochannels.Fordevices
inthe5GHzrange(802.11a/n/ac),thismeansthepossibilityof
upto23discretechannels.
Fordevicesusingthe2.4GHzrange(802.11b/g/n),thewirelessspaceislimitedtoamaximumof14ov erlappingchannels.Asa
resultoftheseoverlappingchannels,2.4GHztechnologyprovidesonlyatotalofthreediscretechannels.
802.11comparisonchart
802.11sign alcharacteristics
802.11a 802.11b 802.11g 802.11n 802.11ac
#ofChannelsinUSA2311111121
#ofChannelsinEU 23 13 13 13 16
#ofChannelsinJapan1514141419
FrequencyBand 5GHz 2.4GHz 2.4GHz 2.4/5GHz 5GHz
Max.DataRate 54Mbps 11Mbps 54Mbps 450Mbps(For
3X3MIMO)
1.3Gbps(ForQAM‐
64,MIMO3X3,and80
MHzchannels)
Radius(Range) 90ft/25m 120ft/35m 120ft/35m 300ft/90m 120ft/35m
NOTE:Although802.11b/g/nstandardsprovidebetween11and14channels,onlythreeofthosechannelsarefullydiscrete
(non‐overlapping)channels.