[opendtv] Re: News: Microsoft, Philips Offer New White Space Test Results

  • From: Richard Hollandsworth <holl_ands@xxxxxxxxx>
  • To: opendtv@xxxxxxxxxxxxx
  • Date: Wed, 3 Oct 2007 15:19:44 -0700 (PDT)

Again---what are the scenaria????

WSD was primarily postulated to provide low-cost W-L broadband  access service.

I would presume a service provider would distribute a bunch of (licensed? fixed 
frequency?)
WSD access points throughout the community, to which the user's WSD would
simply find
and start using---easy peasy---and EMI  could be "managed"....maybe even 
co-channel issues.

Another postulated use is an internal house wireless router--because WiFi is 
congested.
This I think is where WSD will have the most problems....
Perhaps CH2-6, CH14-20, CH52+ (whatever) can be assigned for their use....
PS: In all of California, only Eureka in the far North uses CH2-6.

Re: "Hacker Protection Measures":
W-L BB Service application should be able to restrict WSD XMIT to only assigned 
freqs.

Internal House W-L Router app. is not so easy--but if you presume that it must 
have
some sort of BB connection either prior to
or after initial set-up, then it is possible to
verify that the "zipcode-plus" (or whatever) info input by the user is 
consistent with the
location of attached service provider...give or take some exceptions (e.g. SAT 
BB service).

WSD filings also describe a "Beacon Service" alternative that would list 
permitted freqs.

Or include a dual-purpose WSD/ATSC decoder chip and stop WSD transmissions
if the system detects a location error....give or take a long range tropoduct 
event!!!!!

holl_ands

=================================
"Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx> wrote: Richard 
Hollandsworth wrote:

> But avoiding active DTV channels is a readily solvable
> problem via on-line database lookup (or whatever)....

True, except that you assume a responsible, knowledgable user who gives
a rat's a*s whether he disturbs his apartment neighbors or not.

I don't make such an assumption. The system, to be made into a viable
consumer product, must be able to set itself automatically, IMO. That's
always been the issue here.

It'll be interesting to see what the FCC finds. Last time around, they
discovered this cable TV interference problem that I hadn't even
considered.

Bert

 
       
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