[Bluez-users] receiving files from the phone

[Bluez-users] receiving files from the phone

[Surfkid19 Surfkid19]

Hi,

I'd like to transfer files from a nokia phone to the PC. How
can I achieve this?
What are the transfer rates you've experienced?

What I've already tried:

linux 2.4.28 + affix bluetooth driver + btctl utility's OBEX
FTP commands:
it works, but only with 13-15kbyte/sec receiving speed

liunx 2.6.10 + the kernels inbuilt bluez driver and the
following programs:

btftp from the bluez CVS (receiving speed about 25kbyte/sec)
KDE's bluetooth utilities which have an obex FTP transfer
utility it could receive
at a rate of 20kbyte/sec.

My question is how to debug what makes transfer so slow?
What rates have you exprienced using obex ftp and object
push? (I'm particularly interested in the phone>PC direction).
Any other possibilities for file transfer apart from obex
ftp and object push?

I'd appreciate any help!

Best Regards,
Surfkid

PS: the dongle I've used at the PC is a cambridge type USB
dongle, with the standard hci_usb driver. 



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Re: [Bluez-users] receiving files from the phone

[Marcel Holtmann]

Hi,

> I'd like to transfer files from a nokia phone to the PC. How
> can I achieve this?
> What are the transfer rates you've experienced?
> 
> What I've already tried:
> 
> linux 2.4.28 + affix bluetooth driver + btctl utility's OBEX
> FTP commands:
> it works, but only with 13-15kbyte/sec receiving speed
> 
> liunx 2.6.10 + the kernels inbuilt bluez driver and the
> following programs:
> 
> btftp from the bluez CVS (receiving speed about 25kbyte/sec)
> KDE's bluetooth utilities which have an obex FTP transfer
> utility it could receive
> at a rate of 20kbyte/sec.
> 
> My question is how to debug what makes transfer so slow?
> What rates have you exprienced using obex ftp and object
> push? (I'm particularly interested in the phone>PC direction).
> Any other possibilities for file transfer apart from obex
> ftp and object push?

I can't tell you anything about the Affix stack, but the BlueZ part of
RFCOMM is doing quite good. However sometimes the phone is the limit
here and RFCOMM + OBEX adds a lot of unneeded overhead.

Regards

Marcel




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Re: [Bluez-users] receiving files from the phone

[Surf-kid20]

Hi,

> Hi,
> 
> > I'd like to transfer files from a nokia phone to the PC. How
> > can I achieve this?
> > What are the transfer rates you've experienced?
> > 
> > What I've already tried:
> > 
> > linux 2.4.28 + affix bluetooth driver + btctl utility's OBEX
> > FTP commands:
> > it works, but only with 13-15kbyte/sec receiving speed
> > 
> > liunx 2.6.10 + the kernels inbuilt bluez driver and the
> > following programs:
> > 
> > btftp from the bluez CVS (receiving speed about 25kbyte/sec)
> > KDE's bluetooth utilities which have an obex FTP transfer
> > utility it could receive
> > at a rate of 20kbyte/sec.
> > 
> > My question is how to debug what makes transfer so slow?
> > What rates have you exprienced using obex ftp and object
> > push? (I'm particularly interested in the phone>PC
direction).
> > Any other possibilities for file transfer apart from obex
> > ftp and object push?
> 
> I can't tell you anything about the Affix stack, but the
BlueZ part of
> RFCOMM is doing quite good. However sometimes the phone is
the limit
> here and RFCOMM + OBEX adds a lot of unneeded overhead.
> 
> Regards
> 
> Marcel

I've also tried the blueZ driver, however the phone>PC
direction using OBEX was still only max 20kbyte/sec (at a
distance of 1 meters, DH5 packets were listed at pkg_config).

How could we debug what is causing this slowdown? (where is
the narrow part of the channel..)

Can anyone give some figures for Phone>PC transfer rate
using OBEX?

Is there any other (faster) option to transfer files from
phone to the PC?

I'd be really grateful also, if you could point me to a
manufacturer of some _serial_ bluetooth modul (just a
module, not a complete product), which can do fast OBEX
transfers...

Best regards,
Surf


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