From: Johannes Berg <johannes@sipsolutions.net>
To: Simon Barber <simon@devicescape.com>
Cc: Dan Williams <dcbw@redhat.com>,
netdev@vger.kernel.org, Jean Tourrilhes <jt@hpl.hp.com>
Subject: RE: proposal for new wireless configuration API
Date: Fri, 18 Aug 2006 09:01:47 +0200 [thread overview]
Message-ID: <1155884507.3425.5.camel@ux156> (raw)
In-Reply-To: <C86180A8C204554D8A3323D8F6B0A29F0165B02D@dhost002-46.dex002.intermedia.net>
On Thu, 2006-08-17 at 09:42 -0700, Simon Barber wrote:
> The spec for RSSI is very loose - RSSI is just a 8 bit unsigned number,
> guaranteed to be a monotonically increasing function of signal strength.
> You don't get to know anything about the scale, or linearity of the
> function. In essence RSSI is a vendor specific value, of no known units.
> Not very useful unless you know some card specific details to help
> interpret it.
Yeah, if you knew at least linearity it'd be more useful.
> Now some cards return a signal strength in dBm as the RSSI - note that
> this fits the requirements of a RSSI measure just fine. RCPI is simply a
^^^^
did you mean to write RCPI there?
> more tightly specified signal strength measure.
Ah, ok. Yes, I think we almost know how to make the bcm card report dBm
instead.
johannes
next prev parent reply other threads:[~2006-08-18 7:02 UTC|newest]
Thread overview: 28+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-15 15:28 proposal for new wireless configuration API Johannes Berg
2006-08-15 16:14 ` Luis R. Rodriguez
2006-08-16 7:26 ` Johannes Berg
2006-08-15 16:29 ` Dan Williams
2006-08-15 16:38 ` Michael Buesch
2006-08-15 18:14 ` Dan Williams
2006-08-15 19:13 ` Michael Buesch
2006-08-15 19:27 ` Simon Barber
2006-08-15 19:35 ` Michael Buesch
2006-08-15 20:06 ` Dan Williams
2006-08-15 19:59 ` Dan Williams
2006-08-16 7:14 ` Johannes Berg
2006-08-17 19:39 ` Jean Tourrilhes
2006-08-17 21:24 ` Michael Buesch
2006-08-17 23:29 ` Ulrich Kunitz
2006-08-18 7:12 ` Johannes Berg
2006-08-18 15:00 ` John W. Linville
2006-08-18 21:29 ` Ulrich Kunitz
2006-08-18 22:02 ` Michael Buesch
2006-08-21 7:31 ` Johannes Berg
2006-08-16 6:51 ` Johannes Berg
2006-08-16 18:02 ` Simon Barber
2006-08-17 7:19 ` Johannes Berg
2006-08-17 16:42 ` Simon Barber
2006-08-17 23:23 ` Ulrich Kunitz
2006-08-18 7:01 ` Johannes Berg [this message]
2006-08-18 16:45 ` Simon Barber
2006-08-21 6:45 ` Johannes Berg
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