Semester Offering: InterSem

Communication networks of all types are developing at such a rapid pace and with the widespread deployment of networks that can support very high data transmission rates and a wide range of services, the task of providing the guaranteed quality of service is becoming increasingly complex. The task is worthwhile because it provides the insight required to improve operating efficiency.


Introduction, Components of Network QoS, QoS in ATM Networks, Qos in IP Networks, Some applications.


Consent of Instructor.


I Introduction

  1. Quality of Service Definition and Reference Model
  2. ATM QoS Parameters (Definitions and Terminology, Dynamic and pre-defined QoS in ATM Networks)
  3. IP QoS Parameters (Definitions and Terminology, Integrated and Differentiated Service parameters)
  4. Approaches for Requesting and specifying QoS (ATM's Connection Admission Control (CAC), IP's Resource Reservation Protocol (RSVP))

II Components of Network QoS

  1. A Hierarchy of Networks
  2. Predictable Per-Hop Behavior
  3. Predictable Edge-to-Edge Behavior
  4. Signaling

III QoS in ATM Networks

  1. The Traffic Contract and Conformance
  2. Connection Admission Control (CAC for CBR, VBR, ABR, UBR and GFR traffic)
  3. Queuing and Scheduling (ATM Switch Architectures, Queuing Structure for QoS guarantee, Scheduling Mechanisms)
  4. ABR Flow Control (ABR Service, Control Loop Parameters and Performance Metrics, Source/Destination Behavior, Switch Behavior, Binary/ Explicit Rate Mode ABR)
  5. Congestion Control (Buffer-Partitioning Policies, Occupancy Measure, Discard Policies)

IV QoS in IP Networks

  1. Per-Hop Packet Processing (A Generic Router, Classification, Policing and Marking, Queue Management, Scheduling)
  2. Edge-to-Edge Network Models (IntServ, DiffServ, MPLS)
  3. Establishing Edge-to-Edge IP QoS (RSVP, Implementing Policies)

V Some Applications (If the time is allowed)

  1. Frame Relay Traffic on ATM Networks
  2. IP Traffic on ATM Networks


Lecture Notes.


Jens Burkhard Schmitt: Heterogeneous Network Quality of Service Systems , Kluwer Academic Publishers 2001
Demetres Kouvatsos: Performance Analysis of ATM Networks , Kluwer Academic Publishers 2000
David McDysan: QoS & Traffic Management in IP & ATM Networks , McGraw-Hill, Inc. 2000
Grenville Armitage: Quality of Service in IP Networks: Foundations for a Multi-Service Internet , Macmillan Technical Publishing 2000
Natalie Giroux and Sudhakar Ganti: Quality of Service in ATM Networks: State-of-the-art Traffic Management , Prentice Hall, Inc. 1999
Gary N. Higginbottom: Performance Evaluation of Communication Networks , Artech House, Inc. 1998
A.P. Oodan, K.E. Ward and A.W. Mullee: Quality of Service in Telecommunications , The Institution of Electrical Engineers 1997


IEEE/ACM Transaction on Networking
IEEE Communication Magazine
IEEE Network Magazine
IEEE Journal on Selected Areas in Communications
IEEE Transaction on Communications
International Journal of Communication Systems


The final grade will be computed from the following components:
midterm exam. (30%),
final exam. (50%),
assignment (20%).