anyone give me a hint to implement L1 for openbsc

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Harald Welte laforge at gnumonks.org
Mon Sep 5 11:19:09 UTC 2011


Hi John,

On Mon, Sep 05, 2011 at 05:20:17PM +0800, John Wu wrote:

> We are just planning on this project which use usb based sdr board and
> will be open design and source. 

In that case, what do you plan to use as layer1?  A simple SDR board
only implements "Layer 0", but what about layer1?

osmo-bts and openbsc implement layers >= 2.

So what is your plan for L1 ?

> sounds like sysmocom already working on this.

sysmocom is not building a USB based SDR, but a complete embedded BTS
product (picocell).  That's quite something different.

And while osmo-bts and openbsc are free software available in source
code, the sysmoBTS L0 (hardware) and L1 (FPGA+DSP image) are not.

So by all means, don't be discouraged from building more hardware that
interoperates with GSM related Free and Open Source software!

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