Course content

The course describes various technologies used in access and transport networks. It is shown by examples where the different technologies are used.
- Introduction: the general composition of telecommunications networks with emphasis on the evolution from intelligent to stupid networks, interconnection of administrative and technological domains, overlay access, heterogeneity, real-time requirements, and backward compatibility
- Synchronization: definitions, phase-locked loops, clock hierarchies and hierarchical device synchronization, and synchronization methods used in various systems (ATM, mobile systems, wireless local area networks) where the emphasis is on how particular problems are solved.
- Multiplexing: frequency division, time division and statistical multiplexing. Digital synchronous hierarchy (SDH).
- Multiple access: frequency, time, slow frequency hopping, code and space division multiple access. Random access based on aloha and carrier sense techniques. Load control and stability management of random access systems.
- Switching: basic switching theory for connection-oriented and connectionless systems including numbering, routing and signalling. Principles of time, space and statistical switching. Clos-Benes networks, binary switching elements and label routing, and Banyan networks.
- Land mobile networks using GSM, GPRS and UMTS as examples: cells and radio propagation, architecture of mobile networks, channel coding, signalling, handover, location management, and security.
- Line-of-sight systems: the principles behind WiMAX, radio relay systems, and satellite systems.
- Optical communication: fibres, splitters, couplers, filters, lasers, modulators, detectors, and switching elements.

Learning outcome

A. Knowledge:
1) To understand which components, functions and principles are required for the realization of access and transport networks.
2) To gain deep insight into the main principles of network synchronization, multiplexing, multiple access and switching.
3) To understand how these components, technologies and principle are applied when constructing new telecommunications system.

B. Skills:
1) To be able to design and model new networks.
2) To be able to reuse ideas, technologies and components of previous systems to build new systems.

C. General competence:
1) To understand the design of the telecommunications network and which motives lie behind particular technological choices.

Learning methods and activities

Lectures and voluntary exercises. If there is a re-sit examination, the examination form may be changed from written to oral.

Recommended previous knowledge

TTM4100 Communication - Services and Networks, or equivalent.

Course materials

To be announced at the beginning of the term.

Credit reductions