Comment: xxxxxxxxxxxxB<>Method: tx_onto_PHY ()Comment: This is where the packet is actually passed down to the physical layer.
Action: Find packet transmission time
Assert that it is non-negative but less than slot_time_
Check if this is the PRACH and this is an MS
If yes, check for collision on chan0_0
If collision
Change tt chan0_0 to COLL
Increment coll_count
Mark error in packet header
Check the MAC header subtype
If it is a resource_request
Schedule the Wait timer for 1 TDMA frame
Start the pktTxTimer
Pass the packet to downtarget_