On Fri, May 22, 2009 at 6:46 AM, Nick Kossifidis <mickflemm@xxxxxxxxx> wrote: > 2009/5/22 ffileppo <ffileppo@xxxxxxxxx>: >> >>> > I was wondering if with mac80211 is now possible (and what effort is >>> > needed) to implement a TDMA approach. In particular I would like to: >>> > override 802.11 MPDU frame format, eliminate RTS/CTS exchange, >>> > eliminate automatic ACK and retransmission, eliminate virtual carrier >>> > sense (NAV), control PHY clear channel assessment and control >>> > transmission backoff. >>> >>> Most of this is usually implemented in firmware, so you need access to >>> firmware sources. >>> >> >> Hi, >> thanks for your answer. >> >> If these features are implemented in firmware, it should be possible to modify them if using for example Ath5k (which is a completely FOSS Linux driver) Right? Could you give me any directions? >> >> Talking about the TDMA implementation I was wondering if it is possible to achieve a time granularity of 1?s using commercial-of-the-shelf wifi cards (e.g. atheros ones). >> >> I would appreciate any ideas or thoughts on this matter. >> >> Thank you, >> >> Francesco >> > > Check out freebsd they have TDMA support for the ath driver as far as > i know. It would be cool if we could port it on linux ;-) And if such support comes around, it would make sense as a separate driver. You would need also need a way to ensure proper regulatory compliance. http://wireless.kernel.org/en/developers/Regulatory CRDA was designed to be flexible for any wireless technology. Luis -- 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
