Heikki Hämmäinen

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Mobile end user context has gained increasing attention in the mobile services industry. Context information is seen as an important component in developing new, more personalized, mobile services and applications. This paper studies the effect of end user context on smartphone usage sessions. Smartphone usage sessions are used to depict user behavior and(More)
An open architecture for distributed form management is described. The model employs object-orientation in describing organizational units as well as individual users as entities with uniform external interfaces. Each entity is represented by an autonomous <italic>user agent</italic> which operates on local and migrating <italic>forms</italic>. The form(More)
Mobile virtual network operators (MVNO) buy network capacity from a mobile network operator (MNO) to be able to provide a full portfolio of mobile services for their own subscribers. This paper provides insight into different types of MVNO and their possible business strategies. A strategy framework for classifying MVNO strategies is developed based on(More)
Internet services shake the dynamics of the mobile industry. This paper studies the future of mobile voice with a scenario analysis method. A group of industry experts is interviewed to obtain a set of variables reflecting the uncertainties of the mobile voice market. These variables are used in describing the future evolution of mobile voice. With(More)
This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may(More)