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. Regards; Rostislav -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html