Dependability in Telecommunication Networks

Academic year
Subject Area
Electrical and Computer Engineering
Language of Instruction
Other Languages of Instruction
Mode of Delivery
ECTS Credits
3rd Cycle Studies

Recommended Prerequisites

Knowledge in the area of telecommunications networks, in particular on transmission technologies and also about technologies of packet switching networks. The student must have knowledge of programming languages.Should be proficient in the use of the English language.

Teaching Methods

During the weekly tutorial classes some audio-visual materials will be presented, with the objective to monitor and support the students’ autonomous study. Throughout the semester students will present some homework, confirming that the content of the curriculum is being understood. The seminar classes will be used help the students in the implementation of the selected relevant algorithm(s). The preparation of an oral communication about a work of synthesis will help students develop their ability to research.

Learning Outcomes

The acquisition of concepts related to network reliability and quality of service in telecommunications networks. The ability to calculate some measures of network reliability. Introduction to diverse routing algorithms. Knowledge about mechanisms for fault recovery, particularly in IP,  MPLS and GMPLS networks.

Work Placement(s)



Reliability-quality of service in telecommunication networks.

Introduction to graphs (overview of some deterministic network performance measures).

Approaches for calculating network reliability

Algorithms for cut set calculation.

Algorithms for state-space Enumeration.

Reliability Bounds.

Algorithms for diverse routing.

Recovery mechanisms in IP (IP FastRetoute), MPLS (FastReroute) and GMPLS networks.

Assessment Methods

Computer Work with oral presentation (30-50%). Oral presentation on network recovery(0-30%). Written exam (0-70%). Class attendance and homework (0-20%): 100.0%


Vasseur, J.-P.Pickavet, M, Demeester, P (2005)– Network Recovery: Protection and Restoration of Optical, SONET-SDH, IP, and MPLS– The Morgan Kaufmann Series in Networking.

Bhandari, R. (1999) – Survivable Networks: Algorithms for diverse routing– Springer.

Leon-Garcia, A.,Widjaja, I (2005) – Communication Networks: Fundamental Concepts and Key Architectures–  McGraw-Hill, 2ª edição.

Gomes T., Craveirinha, J. (2011)  – Notas sobre teoria da fiabilidade em redes de telecomunicações.