What are the advantages and disadvantages of using A,B,G,N or AC?

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  • Updated 4 years ago
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Codie Naquin

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Posted 4 years ago

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David Coleman, Employee

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Hello Codie:

Currently, 802.11n technology is what is widely deployed in the enterprise. 802.11a/b/g is now consider legacy.   802.11ac technology is the next generation of WiFi with much faster speeds.

If you have a legacy 802.11a/b/g network or your 802.11n gear is 4 years old... you should probably upgrade to 802.11ac right now.  If you upgraded to 802.11n last year, you might want to wait for the next generation of 802.11ac radios that support MU-MIMO that should debut in late 2015.
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Martin Ericson

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ac is backwards compatible with n and a. Only runs on 5GHz.
Will drop down to similar speed if you have not designed for it.
Especially building/spreading those channel with 80Mhz and 160 MHz can become tricky
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Codie Naquin

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oh alright. Thanks
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Codie Naquin

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ohhh also can anyone explain MU-MIMO for me
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David Coleman, Official Rep

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MU-MIM0 (Multi-User MIMO) is a technology that will allow access points using transmit beamforming and smart antenna arrays to unicast transmit downstream to multiple clients at the same time in different directions
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Codie Naquin

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please excuse me, im not to knowledgeable when it comes to wireless. but from what i infer from that, im assuming that normally a AP just broadcasts into the air and clients talk with the ap but with MU-MIMO it allows an ap to dedicate itself to an individual client?
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Nicolas Maton

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The A = 5ghz max 54mbit
The B = 2.4Ghz max 11mbit
The G = 2.4Ghz max 54mbit
The N = 2.4 and 5 and max 700mbit
The AC wave 1= 5GHZ max 3.47 gbit
The AC wave 2 = 5GHZ max 6.93 gbit

I'd try to avoid the B-rates. They tend to use too much airspace and get your 2.4 down. Preferably if you can go with A (5ghz band) use  N or AC (if available)
(Edited)