[Battlemesh] Fwd: Wifibroadcast

[Monic Meisel]

I just received the call ... please refer to Steini for details :)

email address below ... best Monic 

> Am 03.11.2016 um 17:13 schrieb fboehm <fboehm at aon.at>:
> 
> This project sounds very interesting. Is there any information available regarding the application/use-case. Even better would be some information around the envisioned system architecture.
> 
> Kind regards,
> Franz
> 
>> Am 2016-11-03 um 16:23 schrieb krishna:
>> Hi Monic,
>> 
>> Yes. That is an exciting topic. I have worked on something similar about a year
>> ago. From the inline mail, I understand that the idea is to transfer image/video
>> to multiple nodes wirelessly (necessarily WiFi?) and reliably (hence FEC). I
>> (along with Simon Wunderlich) have been working on a smarter form of FEC called
>> Network Coding, which would also enable the end nodes to cooperate with
>> eachother and share the lost packets in a smart way.
>> 
>> With Wifi, I think the primary challenge with broadcast is that the
>> driver/firmware would assume maximum losses (since it has no way to estimate how
>> lossy the channel actually is, due to loss of feedbacks), and therefore transmit
>> data in the lowest possible datarate (~1Mbps). That obviously could be a
>> bottleneck if we are talking about bulky data transfer. However, We overcame
>> this with patching the ath9k driver.
>> 
>> I could offer some help (or atleast share what I have learnt the hard way) if I
>> know what exactly the problem is.
>> 
>> Cheers,
>> Krishna
>> 
>> 
>> 
>>> On 03/11/16 12:30, Monic Meisel wrote:
>>> Dear wifi experts,
>>> 
>>> is anyone experienced with coding regarding Wifibroadcast and FEC - call for support for refugee project
>>> 
>>> please share ...
>>> 
>>> Best Monic
>>> 
>>>>> Von: steini <steini at elektropost.org>
>>>>> Datum: 3. November 2016 um 08:50:44 MEZ
>>>>> An: intern at lists.ccc.de
>>>>> Betreff: Wifibroadcast
>>>>> 
>>>>> Hallo Gemeinde,
>>>>> 
>>>>> Für unser Projekt in Kooperation mit Seawatch zur Rettung von Flüchtlingen aus Seenot (siehe auch https://berlin.ccc.de/wiki/Datengarten/70 ) suchen wir dringend nach Unterstützung und Hilfe für die digitale Bildübertragung per Funk.
>>>>> 
>>>>> Gibt es hier Menschen mit Codingerfahrung zu Wifibroadcast und FEC?
>>>>> 
>>>>> Liebst,
>>>>> Steini
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>> 
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