From owner-freebsd-wireless@FreeBSD.ORG Mon Oct 22 19:07:23 2012 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 9B9D5185 for ; Mon, 22 Oct 2012 19:07:23 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-pb0-f54.google.com (mail-pb0-f54.google.com [209.85.160.54]) by mx1.freebsd.org (Postfix) with ESMTP id 696158FC0A for ; Mon, 22 Oct 2012 19:07:23 +0000 (UTC) Received: by mail-pb0-f54.google.com with SMTP id rp8so2309638pbb.13 for ; Mon, 22 Oct 2012 12:07:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=G0ad8TQqsHH9hbk7p2NSun2L0X+Wta20F3xeY+aXKrs=; b=n3zstqTzro4GCCDIrUwRoNRhJ7JLS9mBWW2M71pNkeYCz1kcze8Hyf8evKFX9LZJF8 Z47lZ+qUOaxXkuZ5Ko5nLzG03tv1pK240GRlN4zbpYPsU2DzTkkFtv1fe8PvLWxEtPbS l/A6+JrcThJCfQxFyqjc4WAcLSfySsQrWd9H3dvFPynrqRk4f3pfAI2tgfIPRongTQE1 2ED0InTwunS690/iGYi3kd4GixKNesHhOpA5HcVG0bgx2qrEhAl4HZXGkTYY2YNCrePy M7dVzokfRY8VsUiMnY04h6hVqA1oQ0ge7jQfCUz6MmTsCdz8EtX+LUsm3Ih9kHXnyTKR kPWQ== MIME-Version: 1.0 Received: by 10.68.235.68 with SMTP id uk4mr32756956pbc.52.1350932837774; Mon, 22 Oct 2012 12:07:17 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.68.146.233 with HTTP; Mon, 22 Oct 2012 12:07:17 -0700 (PDT) In-Reply-To: References: <201210221556.08616.jhugo@meraka.csir.co.za> Date: Mon, 22 Oct 2012 12:07:17 -0700 X-Google-Sender-Auth: hSMPyoeqTqQ5xZ01eij3ZyW9GXU Message-ID: Subject: Re: 11n channel width From: Adrian Chadd To: Sven Hazejager Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-wireless@freebsd.org X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 22 Oct 2012 19:07:23 -0000 2GHz is a bit flakier here because there's generally a lot more interference floating around. You just choose a primary channel and then say ht:40 . You don't get to choose upper or lower here - the standard requires you don't have overlapping 40MHz channels. (eg ifconfig wlan0 channel 6:ht/40) Adrian