WPS connection in Dual band router

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jasonbobbet

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Hello all,
I am trying to understand how a concurrent dual band client unit (i.e. a wifi repeater) will connect to a concurrent dual band WPS enabled router.

If both the Client and the router are capable of concurrent dual band, which frequency will the Client connect on?
Is there some sort of standard?
Is the implementation vendor specific?
Is it just whichever frequency is configured in the Client unit's GUI for use in WPS mode?
Is there some sort of support mechanism that allows the client to find the better frequency to connect on (I.e. RSSI).

Thanks,
Jason
 
Solution
abailey
In the scenario above if you have both your 2.4Ghz and 5Ghz on the same SSID clients usually choose the one with the stronger signal. This is almost always the 2.4Ghz because lower frequencies travel further than higher frequencies with the same power output. The problem is that the client does not look at interference on the signal. Often times a weaker 5Ghz signal with have better bandwidth than a stronger 2.4Ghz signal because the 2.4Ghz band has lots of interference.
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abailey

abailey

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I would manually configure the connection between the Wifi repeater and the wireless router (rather than try to use WPS). I would use the 5Ghz band between the router and the repeater and use the 2.4Ghz band for client devices. This way you can avoid the increased latency and 50% bandwidth reduction loss of installing a Wifi repeater. Then make sure both devices are using different 2.4Ghz channels and they are only using channels 1,6, or 11 (usually 1 and 11 are best). Also make sure your 2.4Ghz radios are set to 20Mhz wide channels.
 
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jasonbobbet

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Hello abailey,
Thank you for your quick reply.
Thank you for your suggestion, but I am looking to better understand how the technology works.
Could you perhaps give me some more details on how WPS works in the scenario I described above?

Cheers,
Jason
 
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abailey

abailey

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In the scenario above if you have both your 2.4Ghz and 5Ghz on the same SSID clients usually choose the one with the stronger signal. This is almost always the 2.4Ghz because lower frequencies travel further than higher frequencies with the same power output. The problem is that the client does not look at interference on the signal. Often times a weaker 5Ghz signal with have better bandwidth than a stronger 2.4Ghz signal because the 2.4Ghz band has lots of interference.
 
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Solution
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jasonbobbet

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Yes!
This is exactly what I am trying to determine. So most of these types of devices will have a built-in mechanism for measuring RSSI and then will usually end up choosing 2.4 due to signal strength?
 
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abailey

abailey

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Exactly.
 
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