* [RFA] HE addition: TB PPDU bandwidth
@ 2018-12-03 14:14 Johannes Berg
0 siblings, 0 replies; only message in thread
From: Johannes Berg @ 2018-12-03 14:14 UTC (permalink / raw)
To: radiotap-S783fYmB3Ccdnm+yROfE0A; +Cc: Richard Sharpe
Trigger-based PPDUs have an additional bandwidth that determines the
spectral mask etc., I forgot those before but now we need to be able to
look at them in a sniffer.
Since we have a few (very few!) reserved bits, change the HE field as
follows:
data 6
0x00e0 (reserved)
to
0x0020 TB PPDU bandwidth known
0x00c0 TB PPDU bandwidth (bits 24/25 from HE-SIG-A1),
0: 20 MHz, 1: 40 MHz, 2: 80 MHz, 3: 160 MHz/80+80 MHz
The existing bandwidth field captures only the bandwidth/RU allocation
of the data, which in this case would be the RU allocation for the
captured transmitter, not the bandwidth of the overall transmission(s).
johannes
^ permalink raw reply [flat|nested] only message in thread
only message in thread, back to index
Thread overview: (only message) (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2018-12-03 14:14 [RFA] HE addition: TB PPDU bandwidth Johannes Berg
RadioTap Archive on lore.kernel.org
Archives are clonable:
git clone --mirror https://lore.kernel.org/radiotap/0 radiotap/git/0.git
# If you have public-inbox 1.1+ installed, you may
# initialize and index your mirror using the following commands:
public-inbox-init -V2 radiotap radiotap/ https://lore.kernel.org/radiotap \
radiotap@radiotap.org
public-inbox-index radiotap
Example config snippet for mirrors
Newsgroup available over NNTP:
nntp://nntp.lore.kernel.org/org.netbsd.radiotap
AGPL code for this site: git clone https://public-inbox.org/public-inbox.git