Wireshark-bugs: [Wireshark-bugs] [Bug 12558] Inconsistent VHT data rate
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From: bugzilla-daemon@xxxxxxxxxxxxx
Date: Mon, 27 Jun 2016 18:10:51 +0000

Comment # 14 on bug 12558 from 
(In reply to Guy Harris from comment #8)
> (In reply to Ashish Shukla from comment #6)
> > I disagree, with LDPC enabled all of these are valid rates. The IEEE Std
> > 802.11ac-2013 table 22-30 to 22-35 indicate these rates invalid assuming BCC
> > encoding.
> 
> Where in the standard does it indicate that?

https://mentor.ieee.org/802.11/dcn/10/11-10-0820-00-00ac-mcs-selection-and-padding-equations.ppt
gives background on this. Standard adopted simpler scheme by having common
table for both BCC and LDPC instead of having two separate tables. However as
of now all major chipset vendor support these MCSs with LDPC as part of the
regular operation.
Along with all other properties, which are computed/displayed anyway today, the
data rate should be computed as well given the fact that these PPDUs are
received correctly by the receiver.
In general, personally, I would like  a sniffer to display as much information
possible and let end user/consumer make sense out of that.
Thanks to all of you who contributed to make such a great sniffer!

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