headers
Peng Du | 1 Jun 2011 01:11
Picon

Re: Relationship between noise floor and channel quality

Thanks Sergio,

I have a couple of nodes sending packets to a sink. The Tx power is
predefined, though obvious the RSSI values at receiver side vary a
lot. What I want to do is to assess how desirable a channel could be
for my network by reading the RSSI value from the register when no
nodes are sending/receiving. I guess it could be called environment
interference, if noise floor is too ambiguous a name.

So do you think this is a feasible method?

Regards,

Peng

On 31 May 2011 23:37, Sergio Valcarcel <serteckian <at> gmail.com> wrote:
> Hi Peng,
> For a given bandwidth, the capacity of a channel is function of the signal
> to noise ratio. Neither the noise, nor the signal alone, but what matters is
> how larger is the signal with respect to the noise. In fact, you should
> treat as noise any other channel disturbance, like interference.
> If there is very low noise floor but the transmitter is very far away, the
> S/N ratio will still be low.
> However, you could parametrize your set-up, with a lot of assumptions, like
> number of nodes, maximum and minimum transmitting power, maximum and minimum
> distance between Tx and Rx, channel model, etc.
> Then, you could establish bounds in the performance. But I do not know
> whether this is what you have in mind...
> Cheers!
> Sergio
(Continue reading)

Permalink | Reply | 0 comments |
headers
Romain Bornet | 1 Jun 2011 10:29
Picon

Re: TOSSIM Tinyviz in Tinyos2.1.1

Hi,

TinyViz is no longer supported in TinyOS 2.x but you can have a look
at MViz if you want to develop a graphical application.

TOS_ROOT/support/sdk/java/net/tinyos/mviz for host/PC support
TOS_ROOT/apps/MViz for an example mote application

Hope this helps...
     Romain

On Tue, May 31, 2011 at 4:57 PM, neelomadhab neelomadhab
<neelomadhab.padhy <at> gmail.com> wrote:
> Hi,
>  How to run Tinyviz in tinyos2.1.1
>
>  I have recently installed TinyOS2.1.1  in a UBuntu10.04 Lucid system.
>
>  If its not supported in Tinyos2.1.1, is there any way to install it?
>
>  If to use this tool I need to install a older version of TinyOS then how to
> uninstall this version?
>
>  Please suggest and let me know if any documentation is available regarding
> this.
>
> Thanks,
> Neel
>
> _______________________________________________
(Continue reading)

Permalink | Reply | 2 comments |
headers
aggeloko | 1 Jun 2011 10:41
Picon

[MobiWac 2011] ACM MobiWac || 10 days left for paper registration

-----------------------
    Call for Papers
    ACM MobiWac 2011
-----------------------

The 9th ACM* International Symposium on Mobility Management and Wireless
Access (MobiWac 2011) will be held in conjunction with MSWiM 2011 (the
14th ACM International Symposium on Modeling, Analysis and Simulation of
Wireless and Mobile Systems) from October 31 to November 4, 2011 at Miami
Beach, FL, USA.

The MOBIWAC series of events are intended to provide an international
forum for the discussion and presentation of original ideas, recent
results and achievements by researchers, students, and systems developers
on issues and challenges related to mobility management and wireless
access protocols.

Authors are encouraged to submit both theoretical and practical results of
significance on all aspects of wireless and mobile access technologies,
with an emphasis on mobility management and wireless access. Authors are
invited to submit full papers describing original research. Submitted
papers must neither have been published elsewhere nor currently be under
review by another conference or journal.

TOPICS OF INTEREST include, but are not limited to:

- Wireless/Mobile Access Protocols
- Wireless/Mobile Web Access
- Wireless Internet and All-IP integration
- Next Generation Wireless systems
(Continue reading)

Permalink | Reply | 0 comments |
headers
GLC | 1 Jun 2011 10:45
Favicon

problems about Leds

Dear all,

       I've come across a strange problem. My Leds sometimes toggles a little bit rather than totally toggle and I don't think it's because of lack of power. I Wonder why and can anybody help me?
Best Regards,
GLC


<div>
<p>Dear all,</p>
<div>&nbsp; &nbsp; &nbsp; &nbsp;I've come across a strange problem. My Leds sometimes toggles a little bit rather than totally toggle and I don't think it's because of lack of power. I Wonder why and can anybody help me?</div>
<div>Best Regards,</div>
<div>GLC</div>
<br><br><span title="neteasefooter"><span></span></span>
</div>
Permalink | Reply | 0 comments |
headers
Sergio Valcarcel | 1 Jun 2011 14:45
Picon

How to set TinyOS-2.1.1 and imote2 toolchain in Ubuntu 10.10 with an Intel 64 bits machine

Hi,


I wrote a short guide with the steps that I followed to set TinyOS-2.1.1, and to build an updated imote2 toolchain, in Ubuntu 10.10, for an Intel 64 bits machine.

The compiler is gcc­4.3.5, with newlib­1.19.0 and binutils­2.20.90. I use also nesc-1.3.2.

Indeed it is just an extension of the proper TinyOS Wiki plus some compilation of articles on how to set OpenOCD up with the new olimex-arm-h.

While the associated OpenOCD scripts are at:  http://gaps.ssr.upm.es/images/sergio/openocd_scripts.zip

Have a great day!
Sergio
<div>
<p>Hi,</p>
<div><br></div>
<div>I wrote a short guide with the steps that I followed to&nbsp;set TinyOS-2.1.1, and to build an updated imote2 toolchain, in Ubuntu 10.10, for an Intel 64 bits machine.</div>
<div><br></div>
<div>The compiler is gcc&shy;4.3.5, with newlib&shy;1.19.0 and&nbsp;binutils&shy;2.20.90.&nbsp;I use also nesc-1.3.2.</div>
<div><br></div>
<div>Indeed it is just an extension of the proper TinyOS Wiki plus some compilation of articles on how to set OpenOCD up with the new olimex-arm-h.</div>
<div><br></div>
<div>
Just in case somebody find it&nbsp;useful, the link is:&nbsp;<a href="http://gaps.ssr.upm.es/images/sergio/How_to_set_TinyOS-2-1-1_and_imote2_toolchain_in_Ubuntu_10-10_intel_64bits.pdf">http://gaps.ssr.upm.es/images/sergio/How_to_set_TinyOS-2-1-1_and_imote2_toolchain_in_Ubuntu_10-10_intel_64bits.pdf</a>
</div>
<div>While the associated OpenOCD scripts are at: &nbsp;<a href="http://gaps.ssr.upm.es/images/sergio/openocd_scripts.zip">http://gaps.ssr.upm.es/images/sergio/openocd_scripts.zip</a>
</div>
<div><br></div>
<div>Have a great day!</div>
<div>Sergio</div>
</div>
Permalink | Reply | 0 comments |
headers
neelomadhab neelomadhab | 1 Jun 2011 15:56
Picon

Re: TOSSIM Tinyviz in Tinyos2.1.1

Thanks a lot. Its a gr8 Help.

Regards,
Neel

On Wed, Jun 1, 2011 at 1:59 PM, Romain Bornet <bornet.reds <at> gmail.com> wrote:
Hi,

TinyViz is no longer supported in TinyOS 2.x but you can have a look
at MViz if you want to develop a graphical application.

TOS_ROOT/support/sdk/java/net/tinyos/mviz for host/PC support
TOS_ROOT/apps/MViz for an example mote application

Hope this helps...
    Romain

On Tue, May 31, 2011 at 4:57 PM, neelomadhab neelomadhab
<neelomadhab.padhy <at> gmail.com> wrote:
> Hi,
>  How to run Tinyviz in tinyos2.1.1
>
>  I have recently installed TinyOS2.1.1  in a UBuntu10.04 Lucid system.
>
>  If its not supported in Tinyos2.1.1, is there any way to install it?
>
>  If to use this tool I need to install a older version of TinyOS then how to
> uninstall this version?
>
>  Please suggest and let me know if any documentation is available regarding
> this.
>
> Thanks,
> Neel
>
> _______________________________________________
> Tinyos-help mailing list
> Tinyos-help <at> millennium.berkeley.edu
> https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
>

<div>
<p>Thanks a lot. Its a gr8 Help.<br><br>Regards,<br>Neel<br><br></p>
<div class="gmail_quote">On Wed, Jun 1, 2011 at 1:59 PM, Romain Bornet <span dir="ltr">&lt;<a href="mailto:bornet.reds <at> gmail.com">bornet.reds <at> gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote">Hi,<br><br>
TinyViz is no longer supported in TinyOS 2.x but you can have a look<br>
at MViz if you want to develop a graphical application.<br><br>
TOS_ROOT/support/sdk/java/net/tinyos/mviz for host/PC support<br>
TOS_ROOT/apps/MViz for an example mote application<br><br>
Hope this helps...<br>
 &nbsp; &nbsp; Romain<br><div>
<div></div>
<div class="h5">
<br>
On Tue, May 31, 2011 at 4:57 PM, neelomadhab neelomadhab<br>
&lt;<a href="mailto:neelomadhab.padhy <at> gmail.com">neelomadhab.padhy <at> gmail.com</a>&gt; wrote:<br>
&gt; Hi,<br>
&gt; &nbsp;How to run Tinyviz in tinyos2.1.1<br>
&gt;<br>
&gt; &nbsp;I have recently installed TinyOS2.1.1&nbsp; in a UBuntu10.04 Lucid system.<br>
&gt;<br>
&gt; &nbsp;If its not supported in Tinyos2.1.1, is there any way to install it?<br>
&gt;<br>
&gt; &nbsp;If to use this tool I need to install a older version of TinyOS then how to<br>
&gt; uninstall this version?<br>
&gt;<br>
&gt; &nbsp;Please suggest and let me know if any documentation is available regarding<br>
&gt; this.<br>
&gt;<br>
&gt; Thanks,<br>
&gt; Neel<br>
&gt;<br>
</div>
</div>&gt; _______________________________________________<br>
&gt; Tinyos-help mailing list<br>
&gt; <a href="mailto:Tinyos-help <at> millennium.berkeley.edu">Tinyos-help <at> millennium.berkeley.edu</a><br>
&gt; <a href="https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help" target="_blank">https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help</a><br>
&gt;<br>
</blockquote>
</div>
<br>
</div>
Permalink | Reply | 0 comments |
headers
neelomadhab neelomadhab | 1 Jun 2011 16:05
Picon

Mote-PC_serial_communication Tutorial

Hi,
 Any Idea why the Tutorial4 on Mote-PC_serial_communication page is blank on Tiny-OS website:

This is the URL:

http://docs.tinyos.net/tinywiki/index.php/Mote-PC_serial_communication_and_SerialForwarder

Please let me know if any one has the tutorial of this chapter on Tiny-OS 2.1.1 on a UBuntu 10.04 Lucid system.

Thanks,
Neel 

<div><p>Hi,<br>&nbsp;Any Idea why the Tutorial4 on Mote-PC_serial_communication page is blank on Tiny-OS website:<br><br>This is the URL:<br><br><a href="http://docs.tinyos.net/tinywiki/index.php/Mote-PC_serial_communication_and_SerialForwarder">http://docs.tinyos.net/tinywiki/index.php/Mote-PC_serial_communication_and_SerialForwarder</a><br><br>Please let me know if any one has the tutorial of this chapter on Tiny-OS 2.1.1 on a UBuntu 10.04 Lucid system.<br><br>Thanks,<br>Neel <br><br></p></div>
Permalink | Reply | 1 comment |
headers
scatramato@gmail.com | 1 Jun 2011 17:56
Picon

blip statistics

Hi all,

Could you tell me where I can find a description of each field in the Statistics.h packet defined for the Blip stack?
I cannot understand why IP ≠ UDP + ICMP

From the test I have done I can see 7118 ip_sent packets, 7053 udp_sent packets and 4400 icmp_adv_tx.

Both ICMP and UDP are IP packets so the question is what are ip_sent_packets?

I'm getting lost reading the blip code. It would be nice to have a diagram of it.

Davide
_______________________________________________
Tinyos-help mailing list
Tinyos-help <at> millennium.berkeley.edu
https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help
Permalink | Reply | 0 comments |
headers
Mayank Gupta | 1 Jun 2011 22:08
Picon

Getting values of temperature and humidity read onto PC

Hi everybody,

I am developing an application which reads sensor values from sensors
on telosb motes and sends these values in packet to base station mote
connected to pc. Now I am using MsgReader application to read the
contents of the message. My problem is that MsgReader shows values in
hexadecimal. I need the values in Celsius for temperature, % for
humidity and wavelength in nm for light. I am not really sure how to
convert these hexadecimal values shown by MsgReader into the required
values. I hope you understand my query.

It would be very nice if anyone can guide me in the right direction to
do the same task.

Thanking you in anticipation.

With best Regards,
Mayank
Permalink | Reply | 2 comments |
headers
Eric Decker | 1 Jun 2011 22:48
Picon
Gravatar

Re: Mote-PC_serial_communication Tutorial

This seems to have started yesterday or the day before.


Not sure of what is going on.

You can take the name of the page and do a search in google.   Then click on the cached link and you will grab that page.   Clinking links from the page however will take you an original link which may or may not be blank.

On Wed, Jun 1, 2011 at 7:05 AM, neelomadhab neelomadhab <neelomadhab.padhy <at> gmail.com> wrote:
Hi,
 Any Idea why the Tutorial4 on Mote-PC_serial_communication page is blank on Tiny-OS website:

This is the URL:

http://docs.tinyos.net/tinywiki/index.php/Mote-PC_serial_communication_and_SerialForwarder

Please let me know if any one has the tutorial of this chapter on Tiny-OS 2.1.1 on a UBuntu 10.04 Lucid system.

Thanks,
Neel


_______________________________________________
Tinyos-help mailing list
Tinyos-help <at> millennium.berkeley.edu
https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help



--
Eric B. Decker
Senior (over 50 :-) Researcher


<div>
<p>This seems to have started yesterday or the day before.</p>
<div><br></div>
<div>Not sure of what is going on.</div>
<div><br></div>
<div>You can take the name of the page and do a search in google. &nbsp; Then click on the cached link and you will grab that page. &nbsp; Clinking links from the page however will take you an original link which may or may not be blank.</div>
<div>
<br><div class="gmail_quote">On Wed, Jun 1, 2011 at 7:05 AM, neelomadhab neelomadhab <span dir="ltr">&lt;<a href="mailto:neelomadhab.padhy <at> gmail.com">neelomadhab.padhy <at> gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote">
Hi,<br>&nbsp;Any Idea why the Tutorial4 on Mote-PC_serial_communication page is blank on Tiny-OS website:<br><br>This is the URL:<br><br><a href="http://docs.tinyos.net/tinywiki/index.php/Mote-PC_serial_communication_and_SerialForwarder" target="_blank">http://docs.tinyos.net/tinywiki/index.php/Mote-PC_serial_communication_and_SerialForwarder</a><br><br>Please let me know if any one has the tutorial of this chapter on Tiny-OS 2.1.1 on a UBuntu 10.04 Lucid system.<br><br>Thanks,<br>Neel <br><br><br>_______________________________________________<br>
Tinyos-help mailing list<br><a href="mailto:Tinyos-help <at> millennium.berkeley.edu">Tinyos-help <at> millennium.berkeley.edu</a><br><a href="https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help" target="_blank">https://www.millennium.berkeley.edu/cgi-bin/mailman/listinfo/tinyos-help</a><br>
</blockquote>
</div>
<br><br clear="all"><br>
-- <br>Eric B. Decker<br>Senior (over 50 :-) Researcher<br><br><br>
</div>
</div>
Permalink | Reply | 0 comments |

Gmane