Functions of Media Access Control sub layer

Posted By on October 22, 2014


Download PDF
Error Detection and Correction Codes
What is Pure ALOHA and Slotted ALOHA?

the primary functions performed by the MAC layer are:

  • Frame delimiting and recognition
  • Addressing of destination stations (both as individual stations and as groups of stations)
  • Conveyance of source-station addressing information
  • Transparent data transfer of LLC PDUs, or of equivalent information in the Ethernet sublayer
  • Protection against errors, generally by means of generating and checking frame check sequences
  • Control of access to the physical transmission medium

In the case of Ethernet, according to 802.3-2002 section 4.1.4, the functions required of a MAC are:

  • receive/transmit normal frames
  • half-duplex retransmission and backoff functions
  • append/check FCS (frame check sequence)
  • interframe gap enforcement
  • discard malformed frames
  • prepend(tx)/remove(rx) preamble, SFD (start frame delimiter), and padding
  • half-duplex compatibility: append(tx)/remove(rx) MAC address
Error Detection and Correction Codes
What is Pure ALOHA and Slotted ALOHA?

Download PDF

Posted by Akash Kurup

Founder and C.E.O, World4Engineers Educationist and Entrepreneur by passion. Orator and blogger by hobby

Website: http://world4engineers.com