[opendtv] Re: Will Femtocells Save LTE?
- From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
- To: "opendtv@xxxxxxxxxxxxx" <opendtv@xxxxxxxxxxxxx>
- Date: Fri, 29 Apr 2011 15:02:39 -0500
Craig Birkmaier wrote:
> For someone who believes that TV works fine with big sticks, I find it
> rather amazing that you can argue so eloquently for spectral reuse for
> the other guys.
That's the whole point, Craig!
Spectral reuse is critically important when you need to provide *two-way*
services for the masses. It scales very well for THAT purpose.
When you want to efficiently send one-way data *to* the masses, the equation is
entirely different.
To send exactly the same stream to a million appliances, it makes absolutely no
sense to create a complicated cabled network and very short RF links. Think
about it. You would be dedicating the same x MHz band from a zillion small
towers, when you could be sending that SAME x MHz from a much smaller number of
towers, or even just one tower, and *avoid* the whole cabled infrastructure.
It is much, much more efficient to rely on a large RF coverage area for one-way
broadcast. The expense of the small-cell, complicated infrastructure, belongs
on those networks that actually benefit from it, not on those networks that
gain nothing at all from it. I shouldn't have to pay for OTA TV service if the
OTA TV service doesn't need that expensive infrastructure. That's just a case
of TV service subsidizing your smartphone usage.
For a one-way broadcast network, the only possible reason to use more than one
tower would be ease of reception. But even then, the equation is entirely
different from the two-way wireless to the masses.
As I said, aside from the practical limits of what a hand-over protocol can do,
for two-way comms for the masses, there is nothing that scales better than
shortening the RF link, and that can ultimately (I'm speaking theoretically)
result in just ONE frequency allocation for that purpose. Therefore, those guys
are the ones that need to pay the freight.
Bert
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