Tham khảo tài liệu 'communication systems engineering episode 2 part 3', kỹ thuật - công nghệ, cơ khí - chế tạo máy phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Packet multiple access and the Aloha protocol Eytan Modiano Massachusetts Institute of Technology Department of Aeronautics and Astronautics Eytan Modiano Slide 1 Packet Multiple Access TERMINAL Medium Access Control MAC - Regulates access to channel Eytan Modiano Slide 2 Logical Link Control LLC - All other DLC functions Examples of Multiple Access Channels Local area networks LANs Satellite channels Wireless radio Characteristics of Multiple Access Channel - Shared Transmission Medium A receiver can hear multiple transmitters A transmitter can be heard by multiple receivers - The major problem with multiple access is allocating the channel between the users Nodes do not know when other nodes have data to send Need to coordinate transmissions Eytan Modiano Slide