ANNOUNCE: Linux UWB and Wireless USB project

ANNOUNCE: Linux UWB and Wireless USB project

[Inaky Perez-Gonzalez]

Intel is pleased to announce the launch of a project to
implement Linux kernel support for upcoming hardware that
complies with the WiMedia Ultra Wide Band (UWB) and Wireless
USB standards.

UWB is a high-bandwidth, low-power, point-to-point radio
technology using a wide spectrum (3.1-10.6HGz).  It is
optimized for in-room use (480Mbps at 2 meters, 110Mbps at 10m).
It serves as the transport layer for other protocols, such as
Wireless USB (WUSB), IP (WiNET) and upcoming Bluetooth and 1394.
UWB is uniquely qualified to meet the needs of high-speed WPAN
applications.

The project is currently hosted at http://linuxuwb.org, where you
will find links to the current code, documentation, mailing list
and (upcoming) bugzilla.

All code is work in progress at this time, although the limited
functionality currently implemented is fairly stable; it consists
of a basic UWB stack with drivers for radio control, WiNET and a
forthcoming partially implemented Wireless USB host controller.
Please see the documentation for further information.

You are welcome to contribute!

-- Inaky

Re: ANNOUNCE: Linux UWB and Wireless USB project

[Pavel Machek]

Hi!

> Intel is pleased to announce the launch of a project to
> implement Linux kernel support for upcoming hardware that
> complies with the WiMedia Ultra Wide Band (UWB) and Wireless
> USB standards.

Does wireless usb also supply power as wired USB does? ;-)

> UWB is a high-bandwidth, low-power, point-to-point radio
> technology using a wide spectrum (3.1-10.6HGz).  It is

How much power is low power?

> You are welcome to contribute!

Is there any hardware available?
							Pavel

-- 
Thanks for all the (sleeping) penguins.

Re: ANNOUNCE: Linux UWB and Wireless USB project

[Jan Engelhardt]

>> Intel is pleased to announce the launch of a project to
>> implement Linux kernel support for upcoming hardware that
>> complies with the WiMedia Ultra Wide Band (UWB) and Wireless
>> USB standards.
>
>Does wireless usb also supply power as wired USB does? ;-)
>
>From a physics POV, it is not impossible to do so, but I doubt that USB has 
an implementation right now.



Jan Engelhardt
-- 

RE: ANNOUNCE: Linux UWB and Wireless USB project

[Perez-Gonzalez, Inaky]

>From: Pavel Machek [mailto:pavel@ucw.cz]
>
>> Intel is pleased to announce the launch of a project to
>> implement Linux kernel support for upcoming hardware that
>> complies with the WiMedia Ultra Wide Band (UWB) and Wireless
>> USB standards.
>
>Does wireless usb also supply power as wired USB does? ;-)

Hmmm...business idea :)

>> UWB is a high-bandwidth, low-power, point-to-point radio
>> technology using a wide spectrum (3.1-10.6HGz).  It is
>
>How much power is low power?

For what I know (and I could be wrong) max is around -40dBm/MHz 
in the US. I am no expert in the nitty-gritty radio details, but 
I've been told that is 3000 times less emissions than a common 
cellphone, around .1 uW? [this is where my knowledge about radio
*really* fades].

>> You are welcome to contribute!
>
>Is there any hardware available?

I think some companies are starting to make PDKs available this
summer, but YMMV.

-- Inaky

RE: ANNOUNCE: Linux UWB and Wireless USB project

[Alan Cox]

Ar Llu, 2006-06-05 am 13:31 -0700, ysgrifennodd Perez-Gonzalez, Inaky:
> For what I know (and I could be wrong) max is around -40dBm/MHz 
> in the US. I am no expert in the nitty-gritty radio details, but 
> I've been told that is 3000 times less emissions than a common 
> cellphone, around .1 uW? [this is where my knowledge about radio
> *really* fades].

Life is never that simple. The total emissions of UWB are pretty low but
their spread across the wide frequency range makes them incredibly low
on any frequency - so very unlikely to interfere.

The total emissions across the set of frequencies as a sum (with
emphasis on some frequency ranges such as 2.4-2.5GHz) apparently matters
much more than the emissions at one frequency for things like human
exposure.

Alan

Re: ANNOUNCE: Linux UWB and Wireless USB project

[Pavel Machek]

> >> UWB is a high-bandwidth, low-power, point-to-point radio
> >> technology using a wide spectrum (3.1-10.6HGz).  It is
> >
> >How much power is low power?
> 
> For what I know (and I could be wrong) max is around -40dBm/MHz 
> in the US. I am no expert in the nitty-gritty radio details, but 
> I've been told that is 3000 times less emissions than a common 
> cellphone, around .1 uW? [this is where my knowledge about radio
> *really* fades].

Common cellphones are 2W, iirc; (so it would be ~1mW) but I was more
interested in system power consumption. WIFI is too power intensive
for a cellphone (mostly). Is this designed to go into cellphones?
notebooks?

								Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

Re: ANNOUNCE: Linux UWB and Wireless USB project

[Mark Lord]

Pavel Machek wrote:
>
> Common cellphones are 2W, iirc; (so it would be ~1mW) but I was more
> interested in system power consumption. WIFI is too power intensive
> for a cellphone (mostly). Is this designed to go into cellphones?
> notebooks?

Most mobile phones in North America typically max out at 0.5W,
and spent much of the time operating in the uW - mW txpower range.

I've forgotten the specs for GSM in Europe.

Cheers

Re: ANNOUNCE: Linux UWB and Wireless USB project

[Pavel Machek]

On Út 06-06-06 10:02:55, Mark Lord wrote:
> Pavel Machek wrote:
> >
> >Common cellphones are 2W, iirc; (so it would be ~1mW) but I was more
> >interested in system power consumption. WIFI is too power intensive
> >for a cellphone (mostly). Is this designed to go into cellphones?
> >notebooks?
> 
> Most mobile phones in North America typically max out at 0.5W,
> and spent much of the time operating in the uW - mW txpower range.
> 
> I've forgotten the specs for GSM in Europe.

2W max on 900MHz, and 1W max on 1800MHZ, IIRC. Yes, they can go down
on good signal.

But power that goes out of the antena is not the only power
spent... GSM phones have about 5hours theoretical talk time on ~3.6Wh
battery. That means they eat around ~.5W in the best case.

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

RE: ANNOUNCE: Linux UWB and Wireless USB project

[Perez-Gonzalez, Inaky]

>From: Alan Cox [mailto:alan@lxorguk.ukuu.org.uk]
>
>Ar Llu, 2006-06-05 am 13:31 -0700, ysgrifennodd Perez-Gonzalez, Inaky:
>> For what I know (and I could be wrong) max is around -40dBm/MHz
>> in the US. I am no expert in the nitty-gritty radio details, but
>> I've been told that is 3000 times less emissions than a common
>> cellphone, around .1 uW? [this is where my knowledge about radio
>> *really* fades].
>
>Life is never that simple. The total emissions of UWB are pretty low
but
>their spread across the wide frequency range makes them incredibly low
>on any frequency - so very unlikely to interfere.
>
>The total emissions across the set of frequencies as a sum (with
>emphasis on some frequency ranges such as 2.4-2.5GHz) apparently
matters
>much more than the emissions at one frequency for things like human
>exposure.

Right -- I asked our local radio wizard (so I could get more details)
and taking into account that each band is 1584 MHz wide at a max of
-41.3 dBm/Mhz, it yields something like 117 uW per band. He also added 
that once you consider all the fine points it goes down to 100uW per
band 
(-10dBm).

To answer Pavel's question on hardware power consumption, I don't really

know -- too early to tell; however, whoever architected the technology
was keeping in mind a target market similar to bluetooth's, really small
devices and embedded, home entertainment, cell phones, printers, cameras
and the like; it'll be pretty low.

-- Inaky