Le 27/05/2010 10:08, Johannes Berg a écrit : > On Thu, 2010-05-27 at 09:45 +0900, Bruno Randolf wrote: >> IEEE802.11-2007 clause 18.2.3.3 (p640) states that 1, 2, 5.5& 11 Mbits are >> mandatory rates for what they call High Rate direct sequence spread spectrum >> (HR/DSSS) PHY (with long PLCP). > > You're confused. Clause 18 is 11g, we knew that those were mandatory > there, see the code you're modifying. > > Clause 15 is 11b, and it shouldn't change. > > So NACK. > > johannes
I just dig through the various standards and besides there are still some grey areas in my mind (like what is HR/DSSS/PBCC mentioned in Clause 18 or DSSS-OFDM as specified in Clause 19, hopefully both are optional), we have : 802.11a = Clause 17, called OFDM 802.11b = Clause 15 (called DSSS) & Clause 18 (called HR/DSSS). 802.11g = Clause 19, called ERP with lots of variants : ERP-DSSS/CCK, ERP-OFDM, ERP-PBCC 802.11n = Clause 20, called HT for High Throughput, which also includes DUP-OFDM Clause 15 defines 1 Mbits and 2 Mbits rates, long PLCP only Clause 18 defines 5.5 Mbits and 11 Mbits. Optionally, short PLCP is available for 2 Mbits, 5.5 Mbits and 11 Mbits. Since it's optional, such short PLCP rates are probably not part of the mandatory rates. Basic rate set must includes mandatory rates set. This is apparently what every other AP do today and I indeed see no points in adding more rates to the basic rate set other than what is already defined in the mandatory rate set (except we cannot rely on this rule when joining an existing BSS/IBSS, of course). Does the patch you posted is intended to create a 802.11b only or 802.11bg AP/IBSS with a 802.11g hardware for instance? Regards, Benoit _______________________________________________ ath5k-devel mailing list ath5k-devel@lists.ath5k.org https://lists.ath5k.org/mailman/listinfo/ath5k-devel
