Re: [802.3_EPOC] Exclusion Sub-band Question
Steve,
Very good summary of the discussion.
In my mind, both options are very similar, with the only two differences
being the granularity of exclusion bands requested (fixed for method #1,
arbitrary in method #2) and complexity of configuration (in method #1, we
would list bands to be excluded, in method #2, we would list start/stop
frequencies for exclusion bands).
If full flexibility is really what we are after, I'd go with method #2, even
though it might generate a bit more management traffic to configure CNU.
However, it is more future proof and could save us the headache of working
with different grids and granularities of channels.
Marek
From: Shellhammer, Steve [mailto:sshellha@xxxxxxxxxxxxxxxx]
Sent: Tuesday, November 27, 2012 23:36
To: STDS-802-3-EPOC@xxxxxxxxxxxxxxxxx
Subject: [802.3_EPOC] Exclusion Sub-band Question
EPoC TF,
On today's RF Spectrum Ad Hoc call we discussed the Exclusion
Sub-band Rules. There are two approaches that we discussed and it was
suggested that it would be good to get feedback from the larger group,
including the MSOs, on this topic. Here is a description of the two
approaches that have been proposed. If you have technical opinions on the
advantages/disadvantages of the two approaches or you have a preference for
one method, we would like to hear from you.
Method #1
. Exclusion sub-bands are multiples of 2 MHz (e.g. 2, 4, 6, etc.)
and are on a 1 MHz grid.
. In this case one could configure 36 MHz exclusion sub-band on the
lower channel edge and 36 MHz exclusion sub-band on the upper channel edge
and get 120 MHz channel. Then one could include a 2 MHz sub-band within the
120MHz to make room for a cable plant pilot.
Method #2
. Exclusion sub-bands are specified with a start and stop index.
. In this case one could configure a 31 MHz exclusion sub-band on
the lower channel edge and a 22.5 MHz exclusion sub-band on the upper
channel edge. Then one could also include a 1.75 MHz exclusion sub-band
within the channel to make room for a cable plant pilot.
Personal Opinion
. In my opinion, Method #1 is potentially less complex to implement.
. In my opinion, Method #2 provides more flexibility than Method #2
. This seems to be a trade-off between complexity and flexibility
Comments?
Steve
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