[OpenTRV-dev] LoRa

[Bo Herrmannsen]

The reason i asked is that i belived that Lora was open all the way and one
of the HAB guys said they rejected it because it was not (think it was
james)

And i just thought that the longer range would be ideal for them as they
have struggled a bit with ukhas.net to get a decent range

2015-12-31 11:20 GMT+01:00 Mike Stirling <mail at mikestirling.co.uk>:

> Hi Bo,
>
> The MAC layer (LoRAWAN), which I think Jeremy is referring to, is a public
> spec, but the underlying modulation is not.  You can therefore currently
> only implement a LoRA system using one of Semtech's radios or a module
> based on their IP (e.g. Microchip).  The modulation is some sort of chirp
> spread spectrum system so is non-trivial to reverse engineer, but efforts
> are ongoing in the community.  Once that happens it would be possible to
> implement the physical layer in a software radio if that's what you want.
>
> Note that you can use a LoRA radio without the LoRAWAN MAC (as the HAB
> guys currently do).  In this case it just becomes a proprietary data pipe
> like the RFM22B or RFM12, but with longer range.
>
> Mike
>
> On 29/12/15 10:03, Jeremy Poulter wrote:
>
> From what I understand there is a component that is signed and you can not
> change it but I believe the source will be available at some point. This is
> the component that deals with the time slicing and transmitting so you can
> not send more than you are supposed to.
>
> Jeremy
>
> On 28 December 2015 at 13:37, Bo Herrmannsen <bo.herrmannsen at gmail.com>
> wrote:
>
>> Hi
>>
>> on the topic of using LoRa i have been told that parts of it are closed
>> source in the way that you send data off by AT commands and then "magic"
>> happens
>>
>> Have i been told wrong?
>>
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>>
>>
>
>
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