Slotted aloha Time is divided into equal size slots > Equal to packet transmission time Node (w packet transmits at beginning of next slot If collision; retransmit pkt in future slots with probability p, until successful node11 1 node 2 2[2 node3③ C E C S E C E 1010 10 Slotted Aloha Time is divided into equal size slots »Equal to packet transmission time Node (w/ packet) transmits at beginning of next slot If collision: retransmit pkt in future slots with probability p, until successful Success (S), Collision (C), Empty (E) slots