From owner-freebsd-bluetooth@FreeBSD.ORG Fri Apr 10 10:32:00 2009 Return-Path: Delivered-To: freebsd-bluetooth@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 652F2106564A for ; Fri, 10 Apr 2009 10:32:00 +0000 (UTC) (envelope-from plunky@rya-online.net) Received: from smtp01.one2one.net (smtp01.one2one.net [149.254.200.196]) by mx1.freebsd.org (Postfix) with ESMTP id 0ACB28FC08 for ; Fri, 10 Apr 2009 10:31:59 +0000 (UTC) (envelope-from plunky@rya-online.net) Received: from [127.0.0.1] (helo=localhost) by smtpbarns01 with esmtp (Exim 4.50) id 1LsE1b-0008Md-9p; Fri, 10 Apr 2009 11:31:55 +0100 Received: from smtpbarns01 ([127.0.0.1]) by localhost (smtpbarns01 [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 31934-05; Fri, 10 Apr 2009 11:31:54 +0100 (BST) Received: from [10.216.29.42] (helo=rya-online.net) by smtpbarns01 with smtp (Exim 4.50) id 1LsE1Z-0008MH-Ev; Fri, 10 Apr 2009 11:31:54 +0100 Received: (nullmailer pid 872 invoked by uid 1000); Fri, 10 Apr 2009 10:30:36 -0000 Date: Fri, 10 Apr 2009 11:30:36 +0100 (BST) To: Bruce Simpson In-Reply-To: <49DE4F44.8070707@incunabulum.net> References: <49D92E26.2030508@incunabulum.net> <49DD40E2.5030403@incunabulum.net> <1239264003.862926.638.nullmailer@galant.ukfsn.org> <49DE4F44.8070707@incunabulum.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Message-Id: <1239359436.893706.893.nullmailer@galant.ukfsn.org> From: Iain Hibbert X-Virus-Scanned: by amavisd-new-20030616-p10 (Debian) at example.com X-SA-Exim-Connect-IP: 127.0.0.1 X-SA-Exim-Mail-From: plunky@rya-online.net X-SA-Exim-Scanned: No (on smtpbarns01); SAEximRunCond expanded to false Cc: "freebsd-bluetooth@freebsd.org" , "alexei@raylab.com" Subject: Re: Speeding up device discovery: paper X-BeenThere: freebsd-bluetooth@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Using Bluetooth in FreeBSD environments List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 10 Apr 2009 10:32:00 -0000 On Thu, 9 Apr 2009, Bruce Simpson wrote: > I keep wishing Bluetooth had passive scanning like 802.11 does. I always thought that was what 'periodic inquiry' was supposed to be, that a device would take time every n seconds to do a quick neighbor discovery.. btw something you might run into with multiple radios is that I find creating a baseband link does not always work first time, but if the radio has seen the other device recently via inquiry, it can connect very quickly. I'm not sure if this is the radio recording some information about the remote device or that the OS reusing the clock offset is helping, but neither will help if you have one radio doing the inquiry and the other doing the paging.. iain