• understand the general concepts of QoS and the underlying measures required for the provision and guarantee of QoS in modern communication networks;
• understand the international standards relevant for traffic management and QoS definition;
• understand the importance of QoS in relation to network technology and network design, and also in relation to the provision of service to end users;
• describe the roles and characteristics and of key QoS measures and functions;
• know the variety of algorithms that can be used to implement the QoS functions

The subject will cover in depth the definition, standard recommendation and common algorithms in the areas of quality of service and traffic management in ATM/IP based networks. The topics to be covered include:

• Quality of service concepts and parameters in ATM networks
• Traffic characterisation and traffic management in ATM networks
• Standard recommendation ITU-TS I.371 and ATM Forum TM4.0
• Traffic classes and management
• Usage parameter control (UPC), traffic shaping and policing
• Connection admission control (CAC) functions
• Congestion avoidance, control and available bit rate (ABR) traffic
• QoS models and implementations on IP layers and networks
• Virtual queues, queue scheduling, DiffServ and IntServ
• RSVP, RIP and layer 4 QoS capability
• Neuro-fuzzy algorithms for QoS guarantee

• N. Giroux and S. Ganti, Quality of Service in ATM networks, Prentice-Hall, 1998.
• G. Armitage, Quality of Service in ATM networks - Foundations for a multi-service internet, MTP publishing, 2000.
• U. D. Black, QOS in wide area networks, Prentice-Hall, 2000.
• D. McDysan, QoS & traffic management in IP and ATM networks, McGraw-Hill, 2000.

One 2-hour lecture and one 2-hour tutorial or group work per week for 13 weeks. The major teaching method to be used in the subject will be lectures (which will address all of the objectives of the subject listed above). The lectures will be supported by reading exercises and by tutorial or group discussions. Considerable use will be made of student presentations during tutorial and group work sessions, during which students will present the results of investigations into selected QoS algorithms and applications.

Students should expect to spend an average of 12 hours per week for 13 weeks on this subject. The typical breakdown of the workload is as follows:

• attending lectures and tutorial/group work - 4 hours
• reading and preparation - 2 hours
• class exercises and assignments - 6 hours

Lecture theatre: 2 hours/week. Theatre for tutorial or group work: 2 hours/week

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