The module Communication Networks I introduces and analyzes basic technologies of today's communication networks

The lecture covers basic knowledge about communication systems and looks in detail at the four lower layers of the ISO-OSI model: physical layer, link layer, network layer and parts of the transport layer.

The physical layer, which is responsible for adequate transmission over a channel, is briefly considered. Then, fault-tolerant coding, flow control, and medium access control procedures of the link layer are considered. The network layer is then discussed. The focus here is on path finding and congestion control procedures. Finally, basic transport layer functions are considered. This includes UDP and TCP. The Internet and how it works will be looked at in detail throughout the lecture.

Topics include:

  • ISO-OSI and TCP/IP layer models
  • Tasks and properties of the physical layer
  • Coding methods of the physical layer
  • Services and protocols of the data link layer
  • Flow control (sliding window)
  • Applications: LAN, MAN, high-speed LAN, WAN
  • Network layer services
  • Routing algorithms
  • broadcast and multicast routing
  • Congestion handling
  • Addressing
  • Internet Protocol (IP)
  • Network bridges
  • Mobile Networks
  • Transport layer services and protocols
  • TCP, UDP