Networking in Open Distributed Environments - NODES
The NODES group research has wide coverage in distributed systems and data communication, ranging from the effective organisation of Internet protocols and wireless communication to the new challenges of globally interoperating applications. It also has clear connections to software engineering topics.
The research in NODES focuses on three sub-areas: Future Internet, Collaborative and Interoperable Computing, and Computing architectures and platforms. Collaboration between sub-areas is called for on some joint topics arise, including the triad of security-trust-privacy, context sensitivity, connectivity and the stack of interoperability types. The sub-areas also utilise the same types of research approaches, such as performance analysis, formal methods, and architectural and software production models.
In the Future Internet area, the focus is moving towards novel networking architectures designed to meet the demands of the future applications. The main focus points of the work are investigating peer-to-peer technologies in content distribution and communication, new transport-level abstractions and protocols, pervasive and mobile computing, and novel paradigms and architectures for future networks. These themes complement the existing work on always-on and safe connectivity, spontaneous networks and Internet-protocol improvement for mobile environments.
In the Collaborative and interoperable computing area, the focus lies in developing B2B middleware for inter-enterprise collaboration lifecycle management and service interoperability support. The work is based on creating a bridge between an enhanced service-oriented computing architecture and business management processes suitable for globally networked environments. The focus points include joint management of functional and nonfunctional aspects of collaborations, reputation-based trust management, and using formal methods for ensuring coherence of collaboration management information.
In the Computing architectures and platforms area, the development of the Linux OS and the consideration of resource restrictions in operating systems is the main research objective.
The NODES group research results are being actively disseminated through major national research programmes, international research networks, and standardisation channels.
Contact person: Professor Lea Kutvonen
Homepage: http://www.cs.helsinki.fi/research/nodes
Projects:
SOAMES, Service Oriented Architecture in Multichannel e-Services
INTEROP NoE, INTEROP VLAB, European virtual laboratory for Enterprise
Interoper$
WiSH, Widgets Sharing
ICT SHOK
MERCoNe: Multiaccess Experimentations in Real Converging Networks
ABI: Algorithms for Broadband Infrastructure
Selected publications
L. Kutvonen, J. Metso, and S. Ruohomaa: From trading to eCommunity management: Responding to social and contractual challenges. Information Systems Frontiers (ISF) - Special Issue on Enterprise Services Computing: Evolution and Challenges, 9(2-3):181-194, July 2007.
L. Kutvonen, T. Ruokolainen, and J. Metso: Interoperability middleware for federated business services in web-Pilarcos. International Journal of Enterprise Information Systems, Special issue on Interoperability of Enterprise Systems and Applications, 3(1):1-21, January 2007.
W.W. Terpstra, Jussi Kangasharju, C. Leng, A.P. Buchmann: BubbleStorm: Resilient, Probabilistic, and Exhaustive Peer-to-Peer Search, in Proceedings of ACM SIGCOMM, Kyoto, Japan, pp. 49-60, Aug 2007.
L. Daniel and M. Kojo: Using Cross-layer Information to Improve TCP Performance with Vertical Handoffs, In Proc. Second International Conference on Access Networks and Workshops, Ottawa , Canada , August 22-24, 2007.
L. Daniel and M. Kojo: TCP Behaviour with Changes in Access Link Bandwidth and Delay During Vertical Handoffs, In Proc. International Conference on Next Generation Mobile Applications, Services and Technologies Conference (NGMAST 2007), Cardiff, Wales, UK, 12-14 September 2007.