I was just wondering if those who operate a large number of 450m / 450i on 3Ghz have any best practices they suggest when setting up these access points.
So far when following the Cambium documentation I’ve been led to leave everything on the defaults, with the exception that following the 5G colocation tool, I’ve landed on the following settings:
Max Range: 12miles
DL 85%
Contention Slots: 4
Frame Period: 2.5ms
Optimal settings really depend on the deployment goals and environment. Are you trying to sync with an operator using 5G LTE? Are the settings you’ve extracted from the colocation tool based on values you’ve received from the other operator?
In New Zealand we have to sync with 5G operators running DDDSU 2.5ms.
Well, there you go… sounds like you’re stuck with those settings. You might have a bit of flexibility in terms of the max range and contention slots settings… you can play around with those values and see if you’re still in sync with the collocation tool, but that’s it… and fine tuning those settings will only result in very minor throughput improvements.
There are a million other settings in this system I haven’t touched on yet - QOS, filtering (I did see your other post about blocking DHCP thanks) for example.
I think the default settings are probably good for most operators. If there are specific settings you’re curious about I’d review the user guide and also do a quick search on the forum to see if anyone else has asked about it.
As to QoS…
- The default legacy scheduler will be good for most operators. If you find yourself with a mix of SM’s of various modulations and/or not participating in MU-MIMO groupings, you can enable the proportional scheduler and use settings that allow for more fair usage of resources. This will help prevent poor SM’s from monopolizing the AP’s frame utilization.
- You should probably stick to classifying all SM’s in the low priority group. Unless you need super granular control over the priority of various customers (e.g. residential SM’s have lower priority then business SM’s, and gov’t SM’s have highest priority)… it’s best just to keep all SM’s at low priority.
- You’re probably safe to set any broadcast settings to 0. If your using your network to send broadcast traffic, you’d know it and want to use more specific settings.
- I’d only use the SM’s MIR settings as a network traffic flood gate and use something like Cambium QoE for your MIR. You’d set the SM’s MIR to be slightly higher then the Cambium QoE assigned MIR.