Date: Sun, 14 Jul 2002 17:37:29 -0600 (MDT) From: "M. Warner Losh" <imp@bsdimp.com> To: geekvinod@yahoo.com Cc: freebsd-mobile@FreeBSD.ORG Subject: Re: wi TX rate mechanism Message-ID: <20020714.173729.55199580.imp@bsdimp.com> In-Reply-To: <20020714190625.79562.qmail@web21108.mail.yahoo.com> References: <20020714190625.79562.qmail@web21108.mail.yahoo.com>
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In message: <20020714190625.79562.qmail@web21108.mail.yahoo.com>
Vinod <geekvinod@yahoo.com> writes:
: Hi there all.I had a question about the wi TX
: mechanism. I have observed that sometimes the TX rate
: of my wi card fluctuates between 11Mbps, 6Mbps and
: 2Mbps.Why does this happen?
Shit happens :-). It does this because singal strength fluxuates, and
other factors I've not been able to entirely understand.
: if its due to interference why should the TX rate be
: affected?shouldnt just the receiving station be
: affected?
No, both ends have to agree on how they are talking to the other end.
That negotiation is done at a very low level.
: Was wondering if the receiving station tells the
: sender to slow down.does it?
Yes.
Warner
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