Hi All, I am reading the Mac802_11 code of NS2.31 and got confused when I saw DeferTimer is used to defer for DIFS+CW and the same with BackoffTimer. I think there maybe some bug to use one timer to do two jobs(defer and backoff) as I have already post a message inhttp://mailman.isi.edu/pipermail/ns-users/2007-July/060761.html. I wonder why not to use two separated timers in sequence? i.e. instead of calling *mhBackoff_.start(cw_, is_idle(), phymib_.getDIFS()); *mhDefer_.start(phymib_.getDIFS() + rTime); Why not just call *mhBackoff_.start(cw_, is_idle(), 0)after calling *mhDefer_.start(phymib_.getDIFS())? Best regards, HuangWei
