Medium access control
lastmod 2022-10-07created 2022-10-072 edits
Media Access Control (MAC) is a sublayer of data transmission protocols and part of the data link layer defined in the seven-layer OSI model.
Protocols
Random access protocols
- ALOHA
- CSMA
- CSMA/CD
- CSMA/CA
Controlled access protocols
- Reservation
- Polling
- Token passing
Channelization protocols
- FDMA
- TDMA
- CDMA
Wired multidrop networks
Examples of packet-mode multiple access protocols for wired multidrop networks:
- CSMA/CD (used in Ethernet, IEEE 802.3)
- Token bus (IEEE 802.4)
- Token ring (IEEE 802.5)
- Token passing (used in FDDI)
Packet radio wireless networks
Examples of multiple access protocols used in packet radio wireless networks:
- CSMA/CA (used in IEEE 802.11/WiFi WLAN)
- Slotted ALOHA
- Dynamic TDMA
- R-ALOHA
- CDMA
- OFDMA