Wireless Access

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Access network design for branch, remote, outdoor, and campus locations with HPE Aruba Networking access points and mobility controllers.
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Does channel width affect channel utilization?

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  • 1.  Does channel width affect channel utilization?

    Posted Jun 26, 2016 09:32 PM

    Hi Airheads,

     

    If an AP is reporting high 'Busy' channel utilization for 5GHz radios, and assuming low interference from neighboring APs - could increasing channel bandwidth from 20Mhz to 40Mhz reduce 'Busy' utilization?


    I would have thought so as there is effectively more 'space' for client traffic?

     

    I'm asking specifically for a small / dense deployment with 8 APs - with our regulatory domain there would be 4 available 40MHz channels.



  • 2.  RE: Does channel width affect channel utilization?

    EMPLOYEE
    Posted Jun 26, 2016 09:53 PM

    Are you saying that you have high utilization on a 5ghz channel that is only using 20mhz?

     

    Check to see if it is or is not legitimate client traffic that is consuming that bandwidth.  Increasing to 40mhz channels will not help you, really.

     

    What is your situation?



  • 3.  RE: Does channel width affect channel utilization?

    Posted Jun 27, 2016 12:12 PM

    Since you mentioned density, I would suggest reading up on Mode Aware ARM.

    http://www.arubanetworks.com/techdocs/ArubaOS_60/UserGuide/ARM.php

     

    could increasing channel bandwidth from 20Mhz to 40Mhz reduce 'Busy' utilization?

     

    Possibly, but wouldn't that reduce your number of non-overlapping channels?

     

    How many SSID's are you adversiting?