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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, satellite systems) 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.
- Protocol theory: basic principles of protocol design and layering. Particular features of protocols used in the internet, signalling system number 7, and GSM/3G 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. Some details of satellite systems are given: orbits, station keeping, system design, link budgets, and examples of trade-offs (weight, size, performance, and dependability). Intercontinental systems, VSAT, the INMARSAT systems are used as examples of satellite systems.
- Optical communication: fibres, splitters, couplers, filters, lasers, modulators, detectors, and switching elements.

Learning outcome

The course objective is to give a fundamental introduction to the necessary components, functions and principles needed to build mobile and fixed access and transport networks. The main focus is on the technologies that are employed in publicly and local area networks rather than describing different systems in details. The different systems are used as examples to illustrate how different technologies are used to solve particular problems when new systems are designed.

Learning methods and activities

Lectures and mandatory exercises. The course will be held in English if international students attend. If there is a re-sit examination, the examination form may be changed from written to oral.

Compulsory assignments

• Exercises

Recommended previous knowledge

Course TTM4100 Communication - Services and Networks.

Required previous knowledge

Course materials

Jan A Audestad: Technologies and Systems for Access and Transport Networks, Artech House, 2008.

Credit reductions