Question on osmo-trx mcbts

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Harald Welte laforge at osmocom.org
Fri Sep 11 10:50:02 UTC 2020


Hi Thomas,

it's been some time, hope you're doing fine!

Today on IRC we were collectively wondering about one detail in the osmo-trx
mcbts implementation that has been there from day one:

Your're creating the Channelizer and Synthesis class for four channels of 800kHz
within the 3.2Mbps wideband-channel.  So far so good.

But why does the code ever only use up to three of them?

And why is there a specific re-ordering, see radioInterfaceMulti.cpp in
getLogicalChan() ?

It would be great if you could share your thoughts on that.

To me, it looks like the constraint to 3 channels is arbitrary and we should just
as well be able to use all four?

Thanks,
	Harald

-- 
- Harald Welte <laforge at osmocom.org>            http://laforge.gnumonks.org/
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