Sách Mạng

Lectures 13 & 14

Packet Multiple Access: The Aloha protocol
Eytan Modiano
Massachusetts Institute of Technology

ã Shared Transmission Medium
– a receiver can hear multiple transmitters
– a transmitter can be heard by multiple receivers
ã 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



William Stallings
Data and Computer
Communications
Chapter 14
LAN Systems



aloha