Re: [RTnet-users] QoS on Wireless Support

[Jan K. <ki...@rt...>]

Rafael Paoliello Guimaraes schrieb:

> Hello,
> 
> Does rtnet support any 802.11 wireless cards? I would like to use it to 
> provide QoS for multimedia streams (VoIP, video streaming and video 
> surveillance) on ad-hoc networks. Does anybody knows if this is possible 
> to achieve with rtnet?
> 

RTnet does not yet come with any WLAN driver. We are already thinking 
about such an extension, but we are lacking the man-power. Except for 
the wireless configuration extension, the driver layer is identical to 
wired Ethernet. So, if YOU are interested...

What can you expect from RTnet over 802.11? Well, of course not the same 
QoS like standard Ethernet provides due to the high level of media 
disturbances. I'm not an expert on the low level data flow on 802.11 
which AFAIK is not directly influenceable (hence it is likely 
undeterministic), but RTnet may improve the reliability on higher 
protocol levels by coordinating the transmission times. Note: you will 
then need a master station. I'm not sure if this differs much from a 
normal access point. But I think it is worth investigating it!

Jan