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Re: Urgent Packet Software Project needed



Yep, 50% of the users will ignore it, but for those other 50% that will
get all the traffic by just monitoring, at least we solved 50% of the
interference probelm..  it cant hurt.

bob
 On Mon, 25 Feb 2002, ne1h wrote:

> Bob, only way this is going to help is if "everyone" on the ground
> lives by the rule that you don't go to the PBBS on the ISS.  I doubt
> that will happen, I doubt that actually 5% of the people will live by
> this rule.  The First time something gets posted on the PBBS is the
> first time, *everyone* will try to get it.
>
> It was a good intention, but I'm not sure one that will be complied
> with.  Better, is there someway to implement the PACSAT protocol on
> hardware at the ISS, then problem solved.  Not only does everyone
> already have the solution, but it's a much easier way to deal with
> the problem from a software standpoint.  I understand that it might
> require a different solution at the ISS, but it's the only way
> to "enforce" the primary objective.
>
> Just my .02 I guess.
>
> Alan
>
> --- In amsat-arch@y..., Bob Bruninga <bruninga@u...> wrote:
> > As you know, The Space station is back on line with its PBBS
> (Personal BB
> > System).  As has been demonstrated over the last 10 years, the use
> of a
> > single-user PBBS in space is not efficient as each of hundreds of
> > individuals want to log on and download the same messages.  But in
> > the brief 8 minute passes, only one person per pass can use it, and
> only
> > if he  has 2,000 W ERP to get all of his ACKS back up to the PBBS.
> >
> > The net result is 99% of everyone fails.  And we are shooting
> ourselves in
> > the foot when we bring this guaranteed failure (99%) to demonstrate
> at
> > schools etc.  Frustration runs Rampant, and everyone floods the
> AMSAT-BB
> > with EMAIL complaints.
> >
> > What we need is authors to write CODE on the ground that will suck-
> up
> > every packet coming down from ISS and heuristically build
> a "mirror" for
> > the PBBS in all ground user software.  THus, everyone gets a copy
> without
> > transmitting a single packet.  We could even have this all feeding a
> > central WEB page mirror site!.  The Mirror will have the
> same "look" and
> > "feel" of the on-orbit PBBS and will allow everyone to have a look
> and be
> > able to read it.
> >
> > THus we will gain the efficiency of the PACSATS because every
> message will
> > be uploaded only ONCE and only downloaded ONCE if any.
> >
> > Notice, I have not said a thing about "what" would be in the
> messages...
> > That is a political issue I wont touch, but there needs to be a
> > significant FILTER.... But that is another subject..
> >
> > But we need SOFTWARE to build the mirror site.  We have all the RF,
> IGates
> > and Internet connectivity IN PLACE to make it work.  All we need is
> > someone with the time to write the collection software and WEB page
> front
> > end (java)...
> >
> > In the mean time, all software writers of UI code should also write
> > collection software to do the same thing.  THus everyone monitoring
> the
> > downlink captures and builds his OWN copy of the flying PBBS.  Thus,
> > his users DONT need to each connect to download the same thing.
> They all
> > just capture it on the fly...
> >
> > THis is essentially what the PACSAT protocol does well, but we must
> > implement it on the  ground and we are stuck with the fact that the
> PBBS
> > on ISS is  conventional.  I'll try to add a PBBS capture page to my
> > PCSAT.EXE programs as soon as I find time...
> >
> > I dont have anything against the PBBS necessarily, but we must find
> a way
> > to cut down on all the useless connect-requests and reject-busy
> packets
> > and multiple duplicative downloads of the same packets... if we
> want this
> > to be a "success".
> >
> > de WB4APR, Bob
> >
> > ----
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> > To unsubscribe, send "unsubscribe amsat-bb" to Majordomo@a...
>
> ----
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>

de WB4APR@amsat.org, Bob

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