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

  • From: "Manfredi, Albert E" <albert.e.manfredi@xxxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Thu, 4 Oct 2007 10:54:12 -0400

Richard Hollandsworth wrote:

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

I wasn't limiting the scenaria. But I was not concentrating on schemes
used by service providers, since those are very benign.

My own short answer is that if an auto-free-channel-detect mechanism is
*not* used, but some other more fool-proof method is used, then there is
a higher chance of the WSD not causing any problems with respect to OTA

The problems to cable TV is another matter, because there are no white
spaces there. So that could be enough to keep thses devices off the
market, depending what the FCC finds this time around.

The other issue is the N+/-1, N+/-2, N+7, N-6, whatever other weird
vulnerabilities they find. In a managed system, beacon signal or service
provider managed, that could limit white spaces quite a bit.

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