Hello, we have recently deployed some Tarana AP’s near some of our Cambium 3.6 sites. When we first put them up we didn’t see much of a issue but as we have added more subs it seems to have gotten worse. Does anyone have any experience syncing Tarana with Cambium, I’m trying to figure out if the issues are related to sync/timing or just interference. Our current settings are Max Range: 15mile, Frame Period: 5ms, Channel Bandwidth: 20, Contention Slots: 5, Downlink Data Rate: 75%. Any advice is appreciated.
There are operators that are successfully sync’ing 450 with Tarana… at least for adjacent channel use (no guard band)… reports of success with frequency reuse is more fuzzy, with operators claiming that it doesn’t work for some reason. Examples and testing data is scarce. That being said, I’d encourage you to carefully read this write up on sync’ing PMP450m 3GHz/CBRS with 4G LTE… and from there, you should be able to use what you’ve learned from that, along with this Tarana sync white paper I’ve attached to start trying things out.
Tarana Frame Alignment Offset.pdf (1.1 MB)
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Thanks for the info Eric, its been hard to find anything on Tarana. Will give these a read!
Did you have success with this?
We’ve got a related situation, Watch Communications has deployed Tarana near us as part of their CAF II rollout, and the timing parameters we used with LTE operators don’t seem to work.
Any chance someone here has a contact at Watch for frequency coordination (or actually timing coordination)?
We ended up getting Tarana our Cambium timing info and they made Frame Alignment Offset adjustments on our AP’s. We haven’t had any issues since these changes were made. I would definitely try and get a hold of the operator near you and hopefully they would be willing to work with you 
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Does Tarana allow AAAA frequency reuse? I’m trying to reconcile the now apparently accepted wisdom that if you deploy Tarana G1, all your subs can get 400/100 plans. We will sell 40/10 plans in 20 MHz which tells me you would need around 10 times that much spectrum for 400/100 plans. I saw that Tarana allows up to 160 MHz via 4 x 40 MHz channels. But the only band where we could get that much bandwidth is 6 GHz. In CBRS there’s only 150 MHz and that assumes you use all the GAA and nobody else is using their PALs. Key also would be using the entire band on all 4 sectors which implies AAAA frequency reuse, via some technology magic that makes sure adjacent sectors don’t use the edge beams at the same time.
I think it’s important to note that Tarana ONLY supports collocation sync with their 3GHz product line. They provide no frame alignment capabilities for their 5/6GHz equipment and I’ve asked them if they can or will and they’ve have said no. I’ve asked them if they support collocation sync between their 5/6GHz radios and PMP450 5/6GHz and they’ve said no.
ATM, 4 x 40MHz carrier support is only available on their new G1.5 5/6GHz product line. The older G1 lines (both 3 and 5GHz) only support 2 x 40MHz carriers. Also worthy of note, the 3GHz product line does support channel widths smaller then 40MHz if the SAS requires it. The same for the 6GHz product if the AFC requires it. That being said, Tarana does not give you any levers to manually configure the use of smaller channel widths or reduce the number of carriers used. This is all done automatically.
Thanks Eric, very informative as usual.
If that’s how Tarana does it, I would fear being in a situation like trying to convince HAL to open the pod bay doors. Maybe that’s just me, and other people like systems that take control and do things automatically.
With max 80 MHz of spectrum per AP, I have to suspect the 400/100 plans involve a bit of hype and optimism. Especially if other operators are asserting their PALs. I fell for this hype all the way back in the WiMAX days and have been skeptical ever since.
It would also be key if Tarana can do AAAA frequency reuse, or has to use ABAB like we do with 450i/450m. I mean, yes, in theory U-NII-3 or CBRS almost have enough room for 2 x 80 MHz channels, but that assumes clean spectrum with no other users. And pigs can fly.
Tarana supports full automatic sync of all base stations and reuse 1 (aka AAAA)… so all the BN’s at a site, or adjacent sites, or across the entire network can reuse the same channels over and over again. Again, this is done all automatically and is one of their selling points. You just hang the BN, setup the IP, and leave… no need to configure any RF.