Content adaptivity in wireless web access

While the demand for wireless access to web-based systems increases, it becomes apparent that the design of most systems does not support the use of small screen end-devices such as PDAs or mobile phones. However, enabling wireless access should not lead to a duplication of services. Ideally, systems should be adaptive, i.e., be able to adapt themselves to different client needs. This includes coping with bandwidth, memory and power limitations, restricted presentation capabilities and different user profiles. In this paper, several state-of-the-art content adaptation techniques are reviewed. Most of these techniques are based on changes to webpages. As an alternative, we present a new approach based on conceptual abstractions using media types.