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Mobile Computing

The Mobile Computing Group investigates different aspects of wireless and mobile communications. The group has a strong focus on mobile middleware and service platforms. The group was founded by the late Professor Kimmo Raatikainen. [1]

Our vision is that each layer of the networking stack must be aware of the environment, and the whole communication stack needs to be optimized and made adaptive. A key challenge is how to distribute service functionality and logic in the distributed environment. The aim of our work is to enable efficient, secure, always-on, and reliable connectivity irrespective of the access network and terminal device. Moreover, service access and usage must be personalized and adapted to the current operating context.

Our central research items include synchronous and asynchronous middleware communications, publish/subscribe, data synchronization, context-aware systems, and more recently peer-to-peer content dissemination and delivery. Past results can be found at the Fuego Core 2007 [2] web page.

We work in collaboration with the Distributed Networking and Security Group, and the Networking Group at HIIT to address issues in the session and transport layers. We have close operation with groups in University of Helsinki and Helsinki University of Technology doing research in the areas of mobile computing and Internet protocols. Our international collaboration includes University of California at Berkeley (USA), Rutgers University (NJ, USA), Technical University of Darmstadt (Germany), and Waseda University (Tokyo, Japan).

The group is also active in standardization and has contributed to W3C [3], IETF [4], and WWRF [5].

Current members

Past members
[1]

Dr. Oriana Riva
Dr. Jaakko Kangasharju
Tancred Lindholm
Sri Kalyanaraman Ramya

Current projects

PSIRP [7]. FP7 STREP.
Information Processing in Overlay Systems (IPOS). Academy of Finland

Selected publications in 2008-2009

S. Tarkoma. Mobile Middleware: Architecture, Patterns, and Practice [8]. Wiley, 2009. 320 pages. Textbook for a mobile middleware course
T. Lindholm, J. Kangasharju, S. Tarkoma. Syxaw: Data Synchronization Middleware for the Mobile Web. Mobile Networks and Applications Journal (MONET). Volume 14, Number 5 / October, 2009.
3. D. Lagutin, S. Tarkoma. Public Key Signatures and Lightweight Security Solutions in a Wireless Environment. IW2AN 2009.
K. Visala, D. Lagutin, S. Tarkoma. LANES: An Inter-Domain Data-Oriented Routing Architecture. ACM ReArch'09.
J. Rajahalme, M. Särelä, P. Nikander, S. Tarkoma. Incentive-Compatible Caching and Peering in Data-Oriented Networks. ACM ReArch 2008.
P. Savolainen, N. Raatikainen, S. Tarkoma. Windowing BitTorrent for Video-on-Demand: Not All is Lost with Tit-for-Tat. Globecom 2008.

Public Demonstrations and Posters

Sasu Tarkoma. Fuego Toolkit: A Modular Framework for Content-based Routing. DEBS 2008 demo session.
Sasu Tarkoma, Sri Kalyanaraman Ramya, Tancred Lindholm, Jaakko Kangasharju, and Kimmo Raatikainen. Fuego Core Mobility Middleware. In MobiSys '06: 4th international conference on Mobile systems, applications, and services: Poster Session, June 2006.
Fuego Core demonstration at the Sixth IEEE Workshop on Mobile Computing Systems and Applications (WMCSA) at English Lake District in UK, 2-3 December, 2004.

Links:
[1] http://www.cs.helsinki.fi/inmemoriam/Kimmo.Raatikainen/
[2] http://www.hiit.fi/fc
[3] http://www.w3.org
[4] http://www.ietf.org
[5] http://www.ww-rf.org
[6] http://www.cs.helsinki.fi/u/starkoma
[7] http://www.psirp.org
[8] http://www.mobilemiddleware.com