Data Transmission - Protocol Layers and Sub-topics

Protocol Layers and Sub-topics

The OSI model
7 Application layer
6 Presentation layer
5 Session layer
4 Transport layer
3 Network layer
2 Data link layer
  • LLC sublayer
  • MAC sublayer
1 Physical layer

Courses and textbooks in the field of data transmission typically deal with the following OSI model protocol layers and topics:

  • Layer 1, the physical layer:
    • Channel coding including
      • Digital modulation schemes
      • Line coding schemes
      • Forward error correction (FEC) codes
    • Bit synchronization
    • Multiplexing
    • Equalization
    • Channel models
  • Layer 2, the data link layer:
    • Channel access schemes, media access control (MAC)
    • Packet mode communication and Frame synchronization
    • Error detection and automatic repeat request (ARQ)
    • Flow control
  • Layer 6, the presentation layer:
    • Source coding (digitization and data compression), and information theory.
    • Cryptography (may occur at any layer)

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