Return-path: Received: from s3.sipsolutions.net ([5.9.151.49]:56143 "EHLO sipsolutions.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751135AbaFJQn1 (ORCPT ); Tue, 10 Jun 2014 12:43:27 -0400 Message-ID: <1402418588.4152.0.camel@jlt4.sipsolutions.net> (sfid-20140610_184347_457390_CA572D42) Subject: Re: [RFC 0/4 v2] cfg80211/mac80211: Add new interface type for OCB (Outside the Context of a BSS) mode From: Johannes Berg To: Rostislav Lisovy Cc: "John W. Linville" , linux-wireless@vger.kernel.org, linux-kernel@vger.kernel.org, Michal Sojka , s.sander@nordsys.de, jan-niklas.meier@volkswagen.de, Rostislav Lisovy Date: Tue, 10 Jun 2014 18:43:08 +0200 In-Reply-To: <1402322954.11505.10.camel@umadbro> (sfid-20140609_160917_275820_58731C2F) References: <1401468984-24575-1-git-send-email-rostislav.lisovy@fel.cvut.cz> (sfid-20140530_185636_416967_38B72FDB) <1401826536.4157.54.camel@jlt4.sipsolutions.net> <1402322954.11505.10.camel@umadbro> (sfid-20140609_160917_275820_58731C2F) Content-Type: text/plain; charset="UTF-8" Mime-Version: 1.0 Sender: linux-wireless-owner@vger.kernel.org List-ID: On Mon, 2014-06-09 at 16:09 +0200, Rostislav Lisovy wrote: > On Tue, 2014-06-03 at 22:15 +0200, Johannes Berg wrote: > > it's unclear to me how the bitrate is > > selected, are there even different bitrates? > > My understanding is that since we are using OFDM we have to support at > least 3, 6, 12 Mb/s data rates (says 802.11-2012, Chapter 18.1.1, second > paragraph). How to choose it when transmitting? That should probably be > defined in some standard built on top of "802.11p" -- the European > "Intelligent Transport System" standard ETSI EN 302 663 defines > different channels in 5.9 Ghz band along with the "default data > rate" (Table 2, Chapter 4.3). For example Control Channel (nr. 180) has > data rate 6 Mb/s, while Service Channel 2 (nr. 178) has data rate 12 > Mb/s. But that probably means then that you have to select the rate in the join command. johannes