Femto - IuH

historical

Hi Harald,

SCF has a similar thing for 3G femtos, but its pretty much the same L1 implementation and not talking about the management of the femtos.

I actually looking into these units:

http://www.ebay.com/itm/AT-T-3G-MicroCell-signal-booster-DPH151-AT/161858135473?_trksid=p2047675.c100005.m1851&_trkparms=aid%3D222007%26algo%3DSIC.MBE%26ao%3D1%26asc%3D33873%26meid%3D41d794ede0bf4edba3633feaa00b4db3%26pid%3D100005%26rk%3D2%26rkt%3D6%26sd%3D291591420414

There is a lot of them, they are fairly cheap, I already know they run embedded linux (95% that its not VxWorks), and it is a Cisco product.

If you or nobody has any opposition (know something that makes this unit a near impossible candidate), I will probably buy one and take a look. It seems the successor of this product is also embedded linux, and it seems AT&T deploys them in huge quantities, so this seems to be a good candidate.

Regards,
Csaba

----- Eredeti üzenet -----
Feladó: "Harald Welte" <laforge at gnumonks.org>
Címzett: "Sipos Csaba" <sipos.csaba at kvk.uni-obuda.hu>
Másolatot kap: "OpenBSC Mailing List" <openbsc at lists.osmocom.org>
Elküldött üzenetek: Szombat, 2015. Október 17. 20:20:09
Tárgy: Re: Femto - IuH

On Sat, Oct 17, 2015 at 03:50:52PM +0200, Sipos Csaba wrote:
> Do you think that these vendor agnostic implementations can cahnge
> with the small cell forum API?

no.

> http://scf.io/en/documents/082_-_LTE_eNB_L1_API_definition.php

This is the Layer 1 API between the PHY and the MAC/RLC layer.  This is
_very_ far from the Iuh interface.  Compare it with the L1SAP interface
of OsmoBTS.  And Iuh is on th level of the A interface, not even Abis.

Also, this API is for LTE, not for UMTS.

> Do we know any femtos on the market that actually is compatible with
> this API? And if we have one, can that help us?

You can find transceiver hardware + PHY implementations that offer this
L1 API.  However, that is not a complete (femto/small) cell, but the
hardware plus the PHY.

I don't think anyone will quickly come about and implement all the
missing layers, so in the context of developing a NITB with Iuh
interface, it doesn't really help.

> Or maybe you have some specific models in mind you always wanted to
> try but never had the time? If you have any recommendations I would be
> happy to look into them.

I haven't really looked at any femtocells for a very long time.

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