On Tue, Jan 10, 2012 at 11:06 PM, Roman Yeryomin <leroi.li...@gmail.com> wrote: > I just faced the same issue - changing HT20 to HT40+/- doesn't give > anything but this error: > > 20/40 MHz operation not permitted on channel pri=1 sec=5 based on > overlapping BSSes > > This message appears whenever which channel I use in HT40 mode. > `iw dev wlan0 station dump' reports 130 Mbit/s and real data transfer > speed stays the same (about 5 MB/s average) both in HT20 and HT40 > mode. > > I went a bit futher and tested another openwrt based firmware - fonera > - with ralink driver. Although connect speed was reported the same > (130Mbit/s) actual transfer speed was much faster - about 7.5 - 8 > MB/s. The main configuration difference I noticed is that you can set > 802.11n only mode in fonera. > > So is it an opensource driver issue with HT modes or inability to set > 802.11n only mode?
Not sure how much difference 11n-only would make but rt2x00 might not yet be as advanced as the original ralink drivers are. However, in my testing I can get up to 60Mbps (=7-8MB/s) under good channel conditions without running 11n only mode using HT20 (and with a number of pending patches applied). Haven't done much testing with HT40 though ... Helmut _______________________________________________ openwrt-devel mailing list openwrt-devel@lists.openwrt.org https://lists.openwrt.org/mailman/listinfo/openwrt-devel
