Apple

On Feb 14, 2013, at 7:44 PM, Andras Kovi <email@hidden> wrote:

Hi Ant,

Official KB that relates to this http://support.apple.com/kb/HT1365

And a lot of user reports https://www.google.hu/search?q=iphone+wifi+bluetooth+interference&oq=iphone+wifi+bluetooth+interference&aqs=chrome.0.57j62l3.7055&sourceid=chrome&ie=UTF-8

My experience is also the same. It was a little embarrassing when I put together the first prototype of my device and wanted to show it to my customers in a web chat. I didn't understand why gadget that worked just a few minutes ago wasn't able to connect to the Mini I was using for chatting… Then the issue went away as soon as I stopped the WiFi streaming.

A partial solution seems to be that the 5GHz channels are used for WiFi. But I suppose this is not really possible in your case, just as for many others.

However, if you develop an rfcomm application, I suppose you are in the MFi program. I'd imagine you may have access to more info than we do. :)

Thanks,
Andras

On 2013.02.14., at 16:57, Anton Albajes Eizagirre <email@hidden> wrote:

Thanks Andras.

The thing is that we get the data from a device via rfcomm over BT, and stimuli (it's a neurofeedback application), event triggers and others via wi-fi. Moreover, we can not tell the user 'Please, disconnect your wi-fi to use this software and device.' I don't think it's reasonable.

Is there any reference you can provide me about apple being aware of this? I can't imagine this being a known issue with apple hardware and apple not addressing it. Specially if the new macbook pros come without ethernet and all the internet connectivity they have is over wi-fi. What happens with those machines while they use apple's devices via BT like mice or keyboards?

It's hard to believe for me that there isn't a solution for such a big problem :-$

Thanks again for your reply,

Ant

On Feb 13, 2013, at 5:41 PM, András Kövi <email@hidden> wrote:

This is a known limitation. WiFi and BT use the same antenna. In my case this caused the dropping of BLE connections as soon as any WiFi transfer started. You should avoid using the two mediums at the same time.

Regards,
Andras

2013/2/13 Anton Albajes-Eizagirre <email@hidden>

Hi,

We developed a software that receives a data stream from a device. Everything works smooth with a good throughput on all the systems we have (several macbook pro laptops, ranging from 2010 to latest one models), with several different OS versions (from 10.6.8 to 10.8.2 updated this morning) on most of the scenarios.

However, on latest hardwares (2011 and 2012 macbook pro laptops), the throughput of data transfer drops to zero as soon as wi-fi is enabled. With wi-fi disabled, same laptops present the expected good throughput.

Seems that BT and wi-fi is incompatible in latest hardware? Is that right?

I filed a bug report with

Problem ID: 13207101

How can we solve this problem?

Thanks, cordially,

Anton Albajes-Eizagirre

--
Anton Albajes-Eizagirre
Researcher

Starlab
C/Teodor Roviralta, 45
08022 – Barcelona - Spain
tel. +34 93 254 03 64, +34 93 254 03 66
mob. +34 670 02 14 19
fax. +34 93 212 64 45
skype. anton.starlab
e-mail. email@hidden
PGP public key: http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x676FFE1C363C2AF0
___________________________________________________________
STARLAB, Living Science http://starlab.es

This e-mail and the attached files contain confidential information and
are of exclusive use for the addressee. The disclosure, copy and
distribution of the present message and its attachments are prohibited.
If you are not the intended recipient and you receive this
communication, we inform you that it is forbidden by law to read copy or
use it. Please notify us at email@hidden and proceed immediately to
delete it.

Este correo electrónico y los archivos adjuntos al mismo [en su caso]
contienen información confidencial y de uso exclusivo para su
destinatario o destinatarios. Queda prohibida la divulgación, copia o
distribución de la información contenida en el mismo y, en su caso, de
la información contenida en los archivos que pueda llevar adjuntos. Si
usted recibe este correo por error, no siendo el destinatario del mismo,
le indicamos que por ley no le está permitido la lectura, copia y uso
del mismo. Se ruega lo notifique lo antes posible a la dirección
email@hidden y proceda a borrar el mensaje inmediatamente después.

_______________________________________________
Do not post admin requests to the list. They will be ignored.
Bluetooth-dev mailing list (email@hidden)
Help/Unsubscribe/Update your Subscription:

This email sent to email@hidden