Can anyone advice how to fix Co channel interference

businessuer
businessuer Posts: 134  Ally Member
First Comment Friend Collector First Anniversary
in Nebula
Particularly in nebula Ncc.
Any articles to read is appreciated.

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  • upscalevalley
    upscalevalley Posts: 5
    I haven't have fixed it manually yet, but I knw one thing, you need to turn off a lot of the 2.4 GHz radios in dual-frequency access points and rely more of the coverage provided by the 5 GHz AP radios to meet density needs. I hope I could help you. If not, my appologies. :)
  • Zyxel_Judy
    Zyxel_Judy Posts: 1,631  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula
    edited August 2022

    Dear Customer.


    There are some ways to lower the co-channel interference.

    1. Channel planning: We suggest turning on the DCS feature, and setting the DCS schedule at midnight and disabling client aware to avoid serve impact. To know more about DCS configuration, please take a look at this FAQ https://community.zyxel.com/en/discussion/14121 


    2. Fine tune AP power: We could select the Deployment selection based on your AP deployment, or custom to set the customize power value by going to Access point >> Configure >> Radio settings >> Deployment selection & Maximum output power


    3. Adjust channel width: Choose 40MHz or 20MHz instead of 80MHz to lower the co-channel interference. To configure this issue, please go to Access point >> Configure >> Radio settings >> Channel width


    4. AP deployment: Well deployment can greatly improve the effective wireless transmission and reduce the error and re-transfer mission packets, we suggest using the ceiling mount and avoid shielding between AP and client.

    Judy

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  • businessuer
    businessuer Posts: 134  Ally Member
    First Comment Friend Collector First Anniversary
     Zyxel_Judy said:

    Dear Customer.


    There are some ways to lower the co-channel interference.

    1. Channel planning: We suggest turning on the DCS feature, and setting the DCS schedule at midnight and disabling client aware to avoid serve impact. To know more about DCS configuration, please take a look at this FAQ https://community.zyxel.com/en/discussion/14121 


    2. Fine tune AP power: We could select the Deployment selection based on your AP deployment, or custom to set the customize power value by going to Access point >> Configure >> Radio settings >> Deployment selection & Maximum output power


    3. Adjust channel width: Choose 40MHz or 20MHz instead of 80MHz to lower the co-channel interference. To configure this issue, please go to Access point >> Configure >> Radio settings >> Channel width


    4. AP deployment: Well deployment can greatly improve the effective wireless transmission and reduce the error and re-transfer mission packets, we suggest using the ceiling mount and avoid shielding between AP and client.

    Are there any recommended channel width settings? 
  • Zyxel_Judy
    Zyxel_Judy Posts: 1,631  Zyxel Employee
    Zyxel Certified Network Engineer Level 2 - Nebula Zyxel Certified Network Engineer Level 2 - Switch Zyxel Certified Network Engineer Level 2 - Security Zyxel Certified Network Engineer Level 1 - Nebula

    To lower the co-channel interference, normally, you can adjust from 80MHz to 40MHz. If the situation is not better, then down to 20MHz.

    Judy

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