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SP1) For 160M/80+80M, should having all the 20M subchannels in the secondary 80M channel punctured be allowed?
SP2) For 160M/80+80M, should having more than two adjacent 20M subchannels punctured be allowed?
Note: for 160M this includes channels adjacent between the primary and secondary 80M channels, e.g. the ---xxx-- pattern
This is the follow-up to the teleconf discussion just now, toattempt to reach consensus on which puncturing patterns are and
are not allowed.
STRAWMAN PROPOSAL:
If the primary 20 MHz channel is the leftmost one, and x means
punctured, - means not punctured and ? means can be punctured,
then these correspond to only allowing the following patterns
in each case (obviously the patterns will get rearranged if the
P20 is not the leftmost one) for the value of the Bandwidth
field in the HE-SIG-A field of an HE MU PPDU:
4) -x--
5) --x- or ---x
6) -x--???? but not -x--xxxx
7) --x-???? but not --x-xxxx, or
---x???? but not ---xxxxx, or
--xx???? but not --xxxxxx
During the teleconf I think I heard some variants proposed (calling
the one above z):
a) Allow full puncturing of S80, i.e.:
4) -x--
5) --x- or ---x
6) -x--???? including -x--xxxx
7) --x-???? including --x-xxxx, or
---x???? including ---xxxxx, or
--xx???? including --xxxxxx
b) Don't allow any puncturing of S80 (maybe the D1.0 wording?), i.e.:
4) -x--
5) --x- or ---x
6) -x------
7) --x----- or
---x---- or
--xx----
c) Allow "any 2" puncturing for the 7 case (I think I heard something
like that?), i.e.:
4) -x--
5) --x- or ---x
6) -x--???? [all x for ? TBD]
7) --x-???? where exactly one of the ?s is a x, or
---x???? where exactly one of the ?s is a x, or
----???? where exactly two of the ?s are an x, or
--xx----
d) Or was it "at least 2" puncturing for the 7 case, i.e.:
4) -x--
5) --x- or ---x
6) -x--???? [all x for ? TBD]
7) --x-???? where between 1 and 3 (4 TBD) of the ?s are xs, or
---x???? where between 1 and 3 (4 TBD) of the ?s are xs, or
----???? where between 2 and 3 (4 TBD) of the ?s are xs, or
--xx???? where between 0 and 3 (4 TBD) of the ?s are xs
Plus a variant to any of the above:
e) For any/all of the above, don't allow more than 2 adjacent xs
for the 160M case (obviously N/A for 80 and I think also for 80+80)
Please select your option (z or a-d, plus e) or otherwise describe
your understanding.
Happy Easter, and best wishes to you, your colleagues and your families,
Mark
--Mark RISON, Standards Architect, WLAN English/Esperanto/Français
Samsung Cambridge Solution Centre Tel: +44 1223 434600
Innovation Park, Cambridge CB4 0DS Fax: +44 1223 434601
ROYAUME UNI WWW: http://www.samsung.com/uk
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