CCQ % and data rates on mikrotik

[bender-bending-Rodriguez]

please could some one shed some light on this as i have been told by the manager of the company that i work for i am not supposed to change these settings. data rates and tx/rx power on w/c's i think its a load of sh*t and one should change these settings on both ap and client to optimize network efficiency please advise thank you

 

[DanH]

Use the SHIFT key.

Of course data rates and transmission power should be changed if you know what you are doing... But if you don't, then you are probably better off leaving them on default settings.

If you and your company don't know the basics of setting transmission power and data rates or what CCQ means then your company should be outsourcing its wireless links...

I suggest you do some reading on the mikrotik forum and wiki.

 

[Level7]

You should try and achieve the highest CCQ possible, this is usually done by lowering the data rates. Also work on a connection of between 50 and 70db.

Change these on the AP side and the station will sync at those. CCQ from about 90%+ is is ideal

 

[nomdeplume]

Changing data rates does optimise links that are unable to perform at the maximum consistently. Changing power DOWN never up is also a very good idea. Rule of thumb, only ever enter a value of 17 and lower to get the best performance which for me is +-65

 

[savagedavid]

CCQ (Current Communications Quality) indicates how the link is performing compared to a theoretical perfect link. So 70% means that on average 30% of frames had to be re-transmitted (speaking in broad layman's terms). Lowering the data rate to 24mbps or lower (or MCS4 or lower) will deliver the maximum output power of the radio, which may well boost the CCQ.

To deliver best wireless performance however it is important to first do link budget calculations to determine the theoretical signal strength of the link. If your link is 3dB or more worse than that you need to examine why (poor alignment, high noise being the most common causes). Once that is solved you can reduce power settings to deliver a signal strength of 10-15dB better than the quoted sensitivity of the device manufacturer at your target data rate (rule of thumb is around -60 to -65)

For experienced installers most find the best results with the biggest possible antenna with the smallest possible power output. For instance we have links over 6-7km delivering 100mbps+ running power outputs of 5dBM (arond 3.5mW!)