[Mep-dev] Something to take a look at for a possible adaptation for Mep...?
Michelle
w5nyv@yahoo.com
Fri, 21 Nov 2008 17:54:31 -0800 (PST)
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I'll keep your notion in mind. I wouldn't be surprised if there were some i=
nteresting side effects=A0to DTN=A0that might help functions like discovery=
, etc. in unexpected ways.=0A=0AThe=A0presentation by J. Sterbenz and R. Kr=
ishnan, Survivable and Disruption Tolerant Networking, Feb 2005=A0(on the d=
tnrg.org website=A0in the tutorials section)=A0describes a lot of fun thing=
s that seem to begin to approximate=A0behaviours that are a bit more organi=
c than traditional network routing. =0A=0AI enjoyed the "store and haul" an=
imation quite a bit - I just read a description of the power outage in Nove=
mber of 1965 in New York in a book about the (North=A0American)=A0electrica=
l distribution system=A0called 'The Grid'. The New York Times was published=
the night of the blackout=A0- despite the lack of power - by people at the=
NYT printing by candlelight, then=A0"storing and hauling" the copy over to=
another press that had power. =0A=0AReading the story also made me think o=
f how best to power MEP. We don't have a complete power budget quite yet, a=
nd probably won't have a high degree of confidence in the current consumpti=
on numbers until we're actually in the implementation phase, but=A0I am=A0l=
ooking for exploratory ideas on portable power and power supply design. I'm=
assuming that a 13.8 volt based=A0system might be a popular suggestion, an=
d I've heard suggestions to look into supercap-assisted solar. =0A=0AA ques=
tion for the list might be "What's the best portable (or mobile) power setu=
p that you've come across so far, and how best could those ideas or example=
s be adapted to MEP?" =0A=0AMore soon, =A0-Michelle W5NYV =0A=0A=A0=0A=0A=
=0A=0A________________________________=0AFrom: Art Botterell <acb@incident.=
com>=0ATo: Michelle <w5nyv@yahoo.com>=0ACc: mep <mep-dev@uppermeadow.com>=
=0ASent: Friday, November 21, 2008 3:41:07 PM=0ASubject: Re: [Mep-dev] Some=
thing to take a look at for a possible adaptation for Mep...?=0A=0AWell, it=
's nothing but a notion, really, but part of the "interplanetary Internet" =
idea is to deal with intermittent connections and that feels like it might =
have some congruence with the discovery problem.=A0 Hadn't given it any mor=
e thought than that, really.=0A=0A- Art=0A=0AOn Nov 21, 2008, at 11/21/08 3=
:25 PM, Michelle wrote:=0A=0A> Hi Art,=0A> =0A> Could you describe a bit mo=
re about what you are thinking in terms of DTN and discovery? I'm intereste=
d in how you think it would improve the process.=0A> =0A> -Michelle=0A> =0A=
> From: Art Botterell <acb@incident.com>=0A> To: mep <mep-dev@uppermeadow.c=
om>=0A> Sent: Friday, November 21, 2008 10:20:43 AM=0A> Subject: Re: [Mep-d=
ev] Something to take a look at for a possible adaptation for Mep...?=0A> =
=0A> As I understand it, the DTN project basically targets high-latency lin=
ks.=A0 As such, I'm thinking it might have some application in discovery or=
quasi-store-and-forward applications.=A0 However, I'd agree that it's cert=
ainly necessary to get basic connectivity going first.=0A> =0A> - Art KD6O=
=0A> =0A> _______________________________________________=0A> Mep-dev maili=
ng list=0A> Mep-dev@uppermeadow.com=0A> http://lists.uppermeadow.com/mailma=
n/listinfo/mep-dev=0A=0A_______________________________________________=0AM=
ep-dev mailing list=0AMep-dev@uppermeadow.com=0Ahttp://lists.uppermeadow.co=
m/mailman/listinfo/mep-dev=0A
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<html><head><style type="text/css"><!-- DIV {margin:0px;} --></style></head><body><div style="font-family:times new roman, new york, times, serif;font-size:12pt"><DIV>I'll keep your notion in mind. I wouldn't be surprised if there were some interesting side effects to DTN that might help functions like discovery, etc. in unexpected ways.</DIV>
<DIV> </DIV>
<DIV>The presentation by J. Sterbenz and R. Krishnan, <A class=http href="http://www.sterbenz.org/jpgs/tutorials/sumowin-dtn/SUMOWIN-DTN-display.pdf"><FONT color=#810081>Survivable and Disruption Tolerant Networking</FONT></A>, Feb 2005 (on the dtnrg.org website in the tutorials section) describes a lot of fun things that seem to begin to approximate behaviours that are a bit more organic than traditional network routing. </DIV>
<DIV> </DIV>
<DIV>I enjoyed the "store and haul" animation quite a bit - I just read a description of the power outage in November of 1965 in New York in a book about the (North American) electrical distribution system called 'The Grid'. The New York Times was published the night of the blackout - despite the lack of power - by people at the NYT printing by candlelight, then "storing and hauling" the copy over to another press that had power. </DIV>
<DIV> </DIV>
<DIV>Reading the story also made me think of how best to power MEP. We don't have a complete power budget quite yet, and probably won't have a high degree of confidence in the current consumption numbers until we're actually in the implementation phase, but I am looking for exploratory ideas on portable power and power supply design. I'm assuming that a 13.8 volt based system might be a popular suggestion, and I've heard suggestions to look into supercap-assisted solar. </DIV>
<DIV> </DIV>
<DIV>A question for the list might be "What's the best portable (or mobile) power setup that you've come across so far, and how best could those ideas or examples be adapted to MEP?" <BR></DIV>
<DIV>More soon, </DIV>-Michelle W5NYV
<DIV></DIV>
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<B><SPAN style="FONT-WEIGHT: bold">From:</SPAN></B> Art Botterell <acb@incident.com><BR><B><SPAN style="FONT-WEIGHT: bold">To:</SPAN></B> Michelle <w5nyv@yahoo.com><BR><B><SPAN style="FONT-WEIGHT: bold">Cc:</SPAN></B> mep <mep-dev@uppermeadow.com><BR><B><SPAN style="FONT-WEIGHT: bold">Sent:</SPAN></B> Friday, November 21, 2008 3:41:07 PM<BR><B><SPAN style="FONT-WEIGHT: bold">Subject:</SPAN></B> Re: [Mep-dev] Something to take a look at for a possible adaptation for Mep...?<BR></FONT><BR>Well, it's nothing but a notion, really, but part of the "interplanetary Internet" idea is to deal with intermittent connections and that feels like it might have some congruence with the discovery problem. Hadn't given it any more thought than that, really.<BR><BR>- Art<BR><BR>On Nov 21, 2008, at 11/21/08 3:25 PM, Michelle wrote:<BR><BR>> Hi Art,<BR>> <BR>> Could you describe a bit more about what you are thinking in terms of DTN and
discovery? I'm interested in how you think it would improve the process.<BR>> <BR>> -Michelle<BR>> <BR>> From: Art Botterell <<A href="mailto:acb@incident.com" ymailto="mailto:acb@incident.com">acb@incident.com</A>><BR>> To: mep <<A href="mailto:mep-dev@uppermeadow.com" ymailto="mailto:mep-dev@uppermeadow.com">mep-dev@uppermeadow.com</A>><BR>> Sent: Friday, November 21, 2008 10:20:43 AM<BR>> Subject: Re: [Mep-dev] Something to take a look at for a possible adaptation for Mep...?<BR>> <BR>> As I understand it, the DTN project basically targets high-latency links. As such, I'm thinking it might have some application in discovery or quasi-store-and-forward applications. However, I'd agree that it's certainly necessary to get basic connectivity going first.<BR>> <BR>> - Art KD6O<BR>> <BR>> _______________________________________________<BR>> Mep-dev mailing list<BR>> <A
href="mailto:Mep-dev@uppermeadow.com" ymailto="mailto:Mep-dev@uppermeadow.com">Mep-dev@uppermeadow.com</A><BR>> <A href="http://lists.uppermeadow.com/mailman/listinfo/mep-dev" target=_blank>http://lists.uppermeadow.com/mailman/listinfo/mep-dev</A><BR><BR>_______________________________________________<BR>Mep-dev mailing list<BR><A href="mailto:Mep-dev@uppermeadow.com" ymailto="mailto:Mep-dev@uppermeadow.com">Mep-dev@uppermeadow.com</A><BR><A href="http://lists.uppermeadow.com/mailman/listinfo/mep-dev" target=_blank>http://lists.uppermeadow.com/mailman/listinfo/mep-dev</A><BR></DIV></DIV></DIV></div></body></html>
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