From owner-freebsd-hackers Mon May 8 18:44:34 2000 Delivered-To: freebsd-hackers@freebsd.org Received: from rover.village.org (rover.village.org [204.144.255.49]) by hub.freebsd.org (Postfix) with ESMTP id 6ED9F37BD9F; Mon, 8 May 2000 18:44:24 -0700 (PDT) (envelope-from imp@harmony.village.org) Received: from harmony.village.org (harmony.village.org [10.0.0.6]) by rover.village.org (8.9.3/8.9.3) with ESMTP id TAA46750; Mon, 8 May 2000 19:44:22 -0600 (MDT) (envelope-from imp@harmony.village.org) Received: from harmony.village.org (localhost.village.org [127.0.0.1]) by harmony.village.org (8.9.3/8.8.3) with ESMTP id TAA81887; Mon, 8 May 2000 19:44:06 -0600 (MDT) Message-Id: <200005090144.TAA81887@harmony.village.org> To: Chuck Robey Subject: Re: [OT] Finding people with GSM phones (was Re: GPS heads up ) Cc: Nate Williams , Mike Smith , hackers@FreeBSD.ORG In-reply-to: Your message of "Mon, 08 May 2000 21:39:04 EDT." References: Date: Mon, 08 May 2000 19:44:06 -0600 From: Warner Losh Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG In message 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