Quality-of-service in packet networks: basic mechanisms and directions
Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue on Internet telephony
Deriving traffic demands for operational IP networks: methodology and experience
IEEE/ACM Transactions on Networking (TON)
Traffic matrix estimation: existing techniques and new directions
Proceedings of the 2002 conference on Applications, technologies, architectures, and protocols for computer communications
Implementing Service Quality in IP Networks
Implementing Service Quality in IP Networks
An information-theoretic approach to traffic matrix estimation
Proceedings of the 2003 conference on Applications, technologies, architectures, and protocols for computer communications
A survey on statistical bandwidth sharing
Computer Networks: The International Journal of Computer and Telecommunications Networking - Special issue: In memroy of Olga Casals
Deterministic end-to-end delay guarantees with rate controlled EDF scheduling
Performance Evaluation
Capacity overprovisioning for networks with resilience requirements
Proceedings of the 2006 conference on Applications, technologies, architectures, and protocols for computer communications
QoS-aware bandwidth provisioning for IP network links
Computer Networks: The International Journal of Computer and Telecommunications Networking
A framework for end-to-end deterministic-delay service provisioning in multiservice packet networks
IEEE Transactions on Multimedia
Optimizing OSPF/IS-IS weights in a changing world
IEEE Journal on Selected Areas in Communications
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Network planning for realtime services in traditional systems is normally performed based on a fixed traffic demand. Realtime services such as voice and video are currently being widely deployed over packet-based IP networks. Due to the lack of resource control mechanisms in IP networks, the actual traffic during network operation may easily deviate from the given mean traffic matrix values. As realtime services impose stringent quality of service (QoS) constraints, any traffic deviation inside the network might lead to severe quality degradation if any of the links provides insufficient service rate for the available traffic at any time. In this work, we highlight the significance of this problem and propose an effective approach to provide a highly robust network against traffic deviation. By means of both analytical and simulation studies, we study the distribution of realtime connections over an enterprise IP network and show how capacity needs of realtime traffic are affected when various resource control mechanisms are employed. In addition, we study the resulting tradeoff between capacity needs and traffic QoS parameters including packet loss and blocking probability.