Sending text message to MAC 101: "This is a sample text message."
Queueing 30 bytes for 101
Starting collision window at [0..3]
Moving to IDLE_DIFS_WAIT with pending DATA
Idle waited until 1349825348900
Transmitting DATA after simple DIFS wait at 1349825348900
Moving to AWAIT_ACK after sending DATA
Ack timer expired at 1349825352004 
Starting collision window at [0..3]
Moving to BUSY_DIFS_WAIT after ACK timeout.  (slotCount = 1)
Waiting for DIFS to elapse after current Tx...
Idle waited until 1349825352550
DIFS wait is over, starting slot countdown (1)
Idle waited until 1349825352750
Transmitting DATA after DIFS+SLOTs wait at 1349825352750
Moving to AWAIT_ACK after sending DATA
Ack timer expired at 1349825355853 
Doubled collision window -- is now [0..7]
Moving to BUSY_DIFS_WAIT after ACK timeout.  (slotCount = 0)
Waiting for DIFS to elapse after current Tx...
Idle waited until 1349825356400
DIFS wait is over, starting slot countdown (0)
Transmitting DATA after DIFS+SLOTs wait at 1349825356400
Moving to AWAIT_ACK after sending DATA
Ack timer expired at 1349825359503 
Doubled collision window -- is now [0..15]
Moving to BUSY_DIFS_WAIT after ACK timeout.  (slotCount = 5)
Waiting for DIFS to elapse after current Tx...
Idle waited until 1349825360050
DIFS wait is over, starting slot countdown (5)
Idle waited until 1349825360250
Idle waited until 1349825360450
Idle waited until 1349825360650
Idle waited until 1349825360850
Idle waited until 1349825361050
Transmitting DATA after DIFS+SLOTs wait at 1349825361050
Moving to AWAIT_ACK after sending DATA
Ack timer expired at 1349825364146 (-4 ms early)
Doubled collision window -- is now [0..31]
Moving to BUSY_DIFS_WAIT after ACK timeout.  (slotCount = 6)
Waiting for DIFS to elapse after current Tx...
Idle waited until 1349825364650
DIFS wait is over, starting slot countdown (6)
Idle waited until 1349825364850
Idle waited until 1349825365050
Idle waited until 1349825365250
Idle waited until 1349825365450
Idle waited until 1349825365650
Idle waited until 1349825365850
Transmitting DATA after DIFS+SLOTs wait at 1349825365850
Moving to AWAIT_ACK after sending DATA
Ack timer expired at 1349825369056 (6 ms early)
Starting collision window at [0..3]
Moving to AWAIT_PACKET after exceeding retry limit