Date: Mon, 08 May 2000 19:44:06 -0600 From: Warner Losh <imp@village.org> To: Chuck Robey <chuckr@picnic.mat.net> Cc: Nate Williams <nate@yogotech.com>, Mike Smith <msmith@FreeBSD.ORG>, hackers@FreeBSD.ORG Subject: Re: [OT] Finding people with GSM phones (was Re: GPS heads up ) Message-ID: <200005090144.TAA81887@harmony.village.org> In-Reply-To: Your message of "Mon, 08 May 2000 21:39:04 EDT." <Pine.BSF.4.21.0005082132120.3027-100000@picnic.mat.net> References: <Pine.BSF.4.21.0005082132120.3027-100000@picnic.mat.net>
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In message <Pine.BSF.4.21.0005082132120.3027-100000@picnic.mat.net> Chuck Robey writes: : I'm not trying to tell you you're wrong, but I'm having trouble connecting : the dots. Is my lady informant all wet? Or, am I misunderstanding you? The syncing isn't for the initial sync like you are talking about. It is to reject messages that get to the phone by multi-path. The phone knows what's valid and what isn't and to do that has to know what time it is. It isn't to start the sync either, because of the same multipath and atmospherics introducing variations in the propigation times. There are also some other uses for timing that I know I've forgotten over time. Warner To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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