Sharing a Broadcast Channel (cont.)
	ä random access approach: ready stations broadcast at will, leads to collisions that have to be resolved somehow ä Aloha: explicit acknowledgments of received packets ä Ethernet: similar to Aloha, but tries to minimize chance of collisions by limiting “broadcast at will” appropriately, also stops broadcast as soon as collision is detected ä Scheduling approaches perform better under a heavy load ä Random access approaches perform better under a light load