Yup. DBA gates the actual beacon transmit - if there's no beacon in the slot, then it's fine.
SWBA is the software timer that fires just before DBA, so the software stack has a chance to program the hardware with a beacon and let the hardware get the packet DMA -> TX FIFO setup all correctly so that when it's DBA time (ie, time to /transmit/ the beacon), it's already ready to go. -adrian On 18 February 2015 at 09:09, bh <[email protected]> wrote: > Dear Adrian > In ath_intr , there are a variable which decrease every swba, so when > the variable swbaintalval is zero, ap will send beacon .So I think the > period of swba is slot time, ap will send beacon every five slot, the beacon > interval is five slottime? > > Adrian Chadd <[email protected]>编写： > >>On 18 February 2015 at 07:55, bh <[email protected]> wrote: >>> Dear >>> The default slotcnt=2 , becntival=5.For ap it will generate SWBA every >>> slot,it will send beacon every five slots, beacause ap fire the DBA timer >>> in every slot, so it will send data package in every slot. Is my above >>> understanding correct? >> >>It generates SWBA every beacon interval, which is calculated in >>ath_tdma_bintvalsetup(). >> >>Master stations beacon 20 times a second with the default config >>specified by the wiki. >> >> >>-adrian _______________________________________________ [email protected] mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-wireless To unsubscribe, send any mail to "[email protected]"
