[opendtv] Re: Louisiana governor blasts faulty wireless networks
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: <opendtv@xxxxxxxxxxxxx>
- Date: Mon, 5 Sep 2005 18:11:39 -0400
Kon Wilms wrote:
> A few years ago we gave a demonstration to one of
> the senate committees (one of many demos) on using
> 100kbits of the DTV spectrum for delivering escape
> route maps and other data to stationary receivers
> in the field.
IMO, the real problem with these demos is that they
are given to generalists, not those who actually do
the work. And that they are given (obviously) by
those who think a broadcast solution is what the
specialists must want, when in fact that is most
likely very far from the truth.
IMO, the very best thing you can do for emergency
crews in emergency situations is not to try to force
a broadcast model, where the emergency workers have
to wait heaven only knows how long to get to the 2
minutes of content they really want to see, but
instead, reallocate the frequencies used by most of
the TV stations to two-way comms these emergency
crews REALLY need.
Let me quote again what the actual concern was here:
"Blanco said wireless networks throughout the state
remained down, and that state officials were unable
to use hand-held communications devices like
Blackberrys.
"Hurricane Katrina has again exposed shortcomings in
emergency communications networks and the
vulnerability of wireless networks during emergencies.
Critics said more spectrum needs to be earmarked for
emergency communications, and that networks need more
redundancy to function in disasters."
So they, the specialists doing the actual work, are
not asking for a broadcast TV solution. It is
possible that BROADCASTERS want to see themselves as
offering some sort of useful service in these
situations, and they certainly do. But that's not
what this article and the similar sentiments after
9/11 were addressing. They are addressing the needs
of the emergency crews, not the citizens at home, and
emergency crews are better served with two-way comms,
or so THEY seems to be indicating.
Offer someone sceaming for two-way comms a broadcast
solution and he will invariably be unimpressed.
As to the folks at home, and within the context of
8-VSB that we have to live with, use of E8-VSB could
provide the added C/N margins fixed receivers would
need, even when they are 5th gen receivers, in
situations where the receive and/or transmit antennas
are damaged, or backups are being used.
Bert
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