Research Area: Networks

Tenured staff

Yuming Jiang (research area coordinator)

Position: Professor
Research activities: Wireless networking, Internet traffic theory, network measurements, multimedia networing
Webpage

The future role of Internet as a multimedia network depends on the ability to provide service guarantees to the multimedia applications. Challenges have to be addressed in both network design and application design. Network design issues comprise architectures and mechanisms for the provision of service guarantees as well as a theoretical basis for the analysis of service guarantees. Application design issues comprise efficient and flexible mechanisms dealing with the fluctuation in service guarantees provided by the network.

The research has accordingly two focuses. One is on the provision, analysis and management of service guarantees. Specific interest is in the development of a network calculus to be applied for design and analysis. The second focus is on designing mechanisms coordinating multimedia applications and the network to achieve scalable, efficient and quality multimedia delivery.


Poul Heegaard

Position: Professor, Head of Department
Research activities: QoS management, network measurements, wireless networking
Webpage

Performance management is the process of simultaneous optimisation of the quality of delivered service and resource utilisation. In order to do so you need to observe and measure the service and resource usage and availability, and to have functions that enables (re-)configuration and control of services (e.g. access control) and resource utilisation (e.g. routing, scheduling, priority queuing). The research is particularly focused on performance management in adaptable, dynamic networks. Research topics cover monitoring and measurement techniques (both wired, and wireless), network evaluation (rare event simulation techniques, source modeling and the GenSyn traffic generator), and path monitoring and management in dynamic networks in IST BISON project.


Bjarne Helvik

Position: Professor
Research activities: QoS nanagement, robust autonomic systems, security assessment
Webpage

The future fixed networking infrastructure (transport and metro networks) must handle increasing capacity and quality demands from users with access to high speed connections both for business and residential use. Optical networks applying wavelength division multiplexing is today the most promising candidate technology to realize this. Many challenges still exist with regard to how new available optical components, with different properties from electronic components, can be best utilized in a network to establish a flexible and future proof platform for realization of services with very different performance, dependability and security demands.


Øivind Kure

Position: Professor
Research activities: QoS in Internet architecture, wireless networking
Webpage

Quality of service has been a well studied area in the core and access network. However with a slightly broader scope, it is still a wide open field in the yet widely deployed network technologies, like wireless networks, wireless multihop networks, thin link access networks, sensor networks, and multicast networks. The commonality of the research in the area is to extend connectivity with a wider scope of functionality. The work includes defining architecture, buffer management, network feedback mechanisms, resource monitoring, resource allocation, and routing and path selection.


Norvald Stol

Position: Associate Professor
Research activities: Optical networking
Webpage

The future fixed networking infrastructure (transport and metro networks) must handle increasing capacity and quality demands from users with access to high speed connections both for business and residential use. Optical networks applying wavelength division multiplexing is today the most promising candidate technology to realize this. Many challenges still exist with regard to how new available optical components, with different properties from electronic components, can be best utilized in a network to establish a flexible and future proof platform for realization of services with very different performance, dependability and security demands.


Harald Øverby

Position: Associate Professor
Research activities: Optical networking, Tele-economics
Webpage

Future deployment and development of communication networks and networked based services call for an integrated understanding with respect to technical and economic aspects of the technology. Tele-economics is the study of the economics of communication networks and networked based services, with a special focus on:

  • Cost analysis
  • Business modelling
  • Telecommunication market modelling

Special attention is given on future optical networks, including both Wavelength Routed Optical Networks (WRON) and Optical Packet/Burst Switched Networks (OPS/OBS).