[AusNOG] Mobile Data Capacity - Where's the bottleneck?

Jonathan Brewer jon.brewer at gmail.com
Tue Mar 31 11:32:31 EST 2020

Hi All,

I thought I'd follow my comments up with information on a new cell site
backhaul product launched in NZ this week.


1 Gbps fibre tail, upgradable in the future.

My best guess is that future products will be based on XGS-PON or 25G PON.



On Mon, 23 Mar 2020, 13:55 Jonathan Brewer, <jon.brewer at gmail.com> wrote:

> On Mon, 23 Mar 2020 at 11:26, Joseph Goldman <joe at apcs.com.au> wrote:
>> From my understanding it can be a mixture of both. Metro areas shouldn't
>> really have a problem on backhaul as busy towers would have 10, 40, or even
>> 100gbit circuits to the base of the tower, that tends to be more a regional
>> issue when backhauled by microwave.
> 10/40/100 Gbps to a cell tower is 5G equipment vendor dreams. Today
> overall spectral efficiency at a busy tower is rarely better than 2
> bits/Hz/cell, so maybe you need 1 Gbps of backhaul if you've got 150 MHz x
> 3 cells going on a single tower. That's a lot of spectrum given most bands
> in Australia have been sold in 10 & 15 MHz pairs.
> https://www.acma.gov.au/spectrum-auctions
> Very happy to be corrected if anyone from an Australian mobile carrier
> wants to speak up. Just tell us bits/Hertz & we can figure out the rest
> from ACMA licenses.
> Cheers
> Jon
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