Multiple Access Shared Transmission Medium a receiver can hear multiple transmitters a transmitter can be heard by multiple receivers the major problem with multi-access is allocating the channel between the users the nodes do not know when the other nodes have data to send Need to coordinate transmissionsMultiple Access • Shared Transmission Medium – a receiver can hear multiple transmitters – a transmitter can be heard by multiple receivers • the major problem with multi-access is allocating the channel between the users; the nodes do not know when the other nodes have data to send – Need to coordinate transmissions Eytan Modiano Slide 2