Seamless Service Interworking in Heterogeneous Mobile and Ad-Hoc Networks (SESSI)

The goal of the project is to create technological premisses for seamless interworking of services and applications in third generation (3G) cellular networks and in wireless short range networks.

This project applies methods and standards that are already developed when it is possible, and develops new methods and technologies if necessary. The network architectures considered here are 3G networks, independent wireless short range networks such as WLAN and Bluetooth, and heterogeneous networks that expand 3G network with wireless short range networks. The project defines and implements methods for locating services, authenticating, authorizing and managing of sessions in groups and service interworking. This project concentrates in applying technologies defined in 3GPP and Internet standards for different network architectures.

Research staff

Helsinki University of Technology
Timo Kiravuo
Linda Källström, subproject manager
Sanna Liimatainen
Juri Lumenko
Antti Ylä-Jääski
Tampere University of Technology
Janne Pietiäinen
Jussi Saarinen, subproject manager
Tommi Mikkonen
Pekka Vuorela
University of Helsinki
Antti Hulkkonen
Simone Leggio
Jukka Manner, subproject manager
Kimmo Raatikainen


L.Källström, S.Leggio, S.Liimatainen, J.Manner, T.Mikkonen, K.Raatikainen, J.Saarinen and A.Ylä-Jääski: A Framework for Seamless Service Interworking in Ad-Hoc Networks, Elsevier Computer Communications, vol. 29, issue 16, pp. 3277-3294, 12 Oct 2006. (PDF)

Simone Leggio, Sanna Liimatainen, Jukka Manner, Tommi Mikkonen, Jussi Saarinen, Antti Ylä-Jääski: Towards Service Interworking among Ad-Hoc Networks and the Internet. Poster paper in the 14th IST Mobile & Wireless Communications Summit(IST2005), 19 - 23 June 2005, Dresden, Germany. (PDF)

Simone Leggio, Jukka Manner, Antti Hulkkonen and Kimmo Raatikainen: Session Initiation Protocol Deployment in Ad-Hoc Networks: a Decentralized Approach. In proceedings of the International Workshop on Wireless Ad-Hoc Networks (IWWAN2005), May 23 - 26, 2005, London, UK. (PDF)

Kurian, Jimmy: Design and Implementation of an Authentication and Authorization Module for Service Access in Ad Hoc Networks. Master's Thesis, Helsinki University of Technology, 2005. 74 pp. (PDF)

Alhoniemi, Erno: A Gateway for Wireless Ad-Hoc Networks. Master's Thesis, Helsinki University of Technology, 2004. 80 pp. (PDF)


Contact information

Responsible manager:
Prof. Antti Ylä-Jääski
P.O.Box 5400
Fin-02015 HUT

This page is maintained by Linda Källström, lstaffan at
Last modified: 26.7.2005