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From: "Alwin Beukers" <alwin-dY08KVG/lbpWk0Htik3J/w@public.gmane.org>
To: Simon Barber <simon-vp0mx6+5gkqFX2APIN6yfw@public.gmane.org>
Cc: "radiotap-sUITvd46vNxg9hUCZPvPmw@public.gmane.org"
	<radiotap-sUITvd46vNxg9hUCZPvPmw@public.gmane.org>
Subject: RE: [RFC] VHT fields
Date: Tue, 19 Jun 2012 11:37:09 +0000	[thread overview]
Message-ID: <C6E8EE2D6B3ACB4582C1249E834B3065061857@SJEXCHMB13.corp.ad.broadcom.com> (raw)
In-Reply-To: <4FDF7426.2050202-vp0mx6+5gkqFX2APIN6yfw@public.gmane.org>

Hi Simon,

> I'm not very familar with 11ac - but does this information together
> with the packet data give you enough to calculate precisely the
> packet's duration in time? Are there any duration fields, as there are
> in 11n that might be useful?

Haven't tried it, but I think you would have all the required info.

Section 22.3.2 of the 11ac draft has the durations of the training and
signal fields. The duration of VHT-LTF depends on the total number
of space-time streams (NSTS), which you can get from the SU_VHT
and MU_VHT fields.

The radiotap header doesn't contain the data length from the 
VHT-SIG-B field, but I guess you can get that from the packet data
itself. There is a datarate calculation in the Wireshark patch I sent
with the proposal.

Alwin

> 
> Simon

  parent reply	other threads:[~2012-06-19 11:37 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-06-15  8:15 [RFC] VHT fields Alwin Beukers
     [not found] ` <C6E8EE2D6B3ACB4582C1249E834B306505FEEE-HXj2mutaA2obnnZVN+9SiJr/X4hKkxxPpWgKQ6/u3Fg@public.gmane.org>
2012-06-15  8:29   ` Johannes Berg
2012-06-18 12:01   ` Johannes Berg
     [not found]     ` <1340020862.4615.8.camel-8upI4CBIZJIJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2012-06-19 10:56       ` Alwin Beukers
2012-06-18 18:32   ` Simon Barber
     [not found]     ` <4FDF7426.2050202-vp0mx6+5gkqFX2APIN6yfw@public.gmane.org>
2012-06-19 11:37       ` Alwin Beukers [this message]
  -- strict thread matches above, loose matches on Subject: below --
2012-06-14 11:24 Alwin Beukers
2012-06-12 15:05 Alwin Beukers
     [not found] ` <C6E8EE2D6B3ACB4582C1249E834B306505D68C-HXj2mutaA2obnnZVN+9SiJr/X4hKkxxPpWgKQ6/u3Fg@public.gmane.org>
2012-06-12 16:51   ` Johannes Berg
     [not found]     ` <1339519879.4531.13.camel-8upI4CBIZJIJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2012-06-13 10:42       ` Alwin Beukers
     [not found]         ` <C6E8EE2D6B3ACB4582C1249E834B306505E99C@SJEXCHMB13.corp.ad.broadcom.com>
     [not found]           ` <1339672828.4461.0.camel@jlt3.sipsolutions.net>
     [not found]             ` <1339672828.4461.0.camel-8upI4CBIZJIJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2012-06-14 12:05               ` Arend van Spriel
2012-07-04 17:18   ` Alwin Beukers
     [not found]     ` <C6E8EE2D6B3ACB4582C1249E834B306506E807-HXj2mutaA2obnnZVN+9SiJr/X4hKkxxPpWgKQ6/u3Fg@public.gmane.org>
2012-07-05  8:37       ` Johannes Berg
     [not found]         ` <1341477463.4455.17.camel-8upI4CBIZJIJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2012-07-23 13:43           ` Alwin Beukers
2012-07-05  9:08   ` Johannes Berg
     [not found]     ` <1341479327.4455.35.camel-8upI4CBIZJIJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2012-07-23 14:47       ` Alwin Beukers
     [not found]         ` <C6E8EE2D6B3ACB4582C1249E834B306508054B-HXj2mutaA2obnnZVN+9SiJr/X4hKkxxPpWgKQ6/u3Fg@public.gmane.org>
2012-07-23 15:25           ` Johannes Berg
     [not found]             ` <1343057111.4584.22.camel-8upI4CBIZJIJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2012-07-27 14:41               ` Alwin Beukers
     [not found]                 ` <C6E8EE2D6B3ACB4582C1249E834B306508499C-HXj2mutaA2obnnZVN+9SiJr/X4hKkxxPpWgKQ6/u3Fg@public.gmane.org>
2012-08-20 16:42                   ` Johannes Berg
     [not found]                     ` <1345480938.4459.40.camel-8upI4CBIZJIJvtFkdXX2HixXY32XiHfO@public.gmane.org>
2012-08-24  7:46                       ` Alwin Beukers
     [not found]                         ` <C6E8EE2D6B3ACB4582C1249E834B30650B4151-HXj2mutaA2obnnZVN+9SiJr/X4hKkxxPpWgKQ6/u3Fg@public.gmane.org>
2012-08-24  9:00                           ` Johannes Berg

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