Link adaptation is a process of paramount importance to optimize the performance of wireless communication systems. However, standardization committees have not standardized link adaptation procedures in order to foster competitiveness among vendors. As a consequence, many research projects have been conducted on this field and several strategies have been presented and tested, mainly for High ...

Adaptation in Web services has gained a significant attention and becomes a key feature of Web services. Indeed, in a dynamic environment such as the Web, it's imperative to design an effective system which can continuously adapt itself to the changes (service failure, changing of QoS offering, etc.). However, current Web service standards and technologies don’t provide a suitable architecture ...

In heterogeneous radio access networks mobile terminals can dynamically change their radio access not only between access points but also between different radio access technologies (RATs). We present a network based Multi-Radio Management (MRM) for seamless control of inter-RAT mobility. Access Selection can be triggered by a change of radio channel quality, by the start of an application or b...

We introduce a scalable application-level QoS adaptation service for roaming between wireless networks that are based on different technologies (‘inter-tech’ roaming). The service is part of a platform that supports the distribution of multimedia streams (e.g., a streamed TV channel) to mobile clients operating in a heterogeneous environment. Central to our approach is the notion of a service c...

Service adaptation is fundamental to context-aware service provisioning and to the realization of the Virtual Home Environment concept, which is now an integral part of the 3G service framework. Although the technological means for developing advanced, adaptable services are maturing, managing adaptation is still an ambitious task. In this paper, we tackle the issues of automating and managing ...

Can farmers change micro-climates around their crops as an adaptation to climate change? We present a novel adaptation technique for pistachio growers in California, meant to deal with warm winters. A kaolin clay mud is sprayed on dormant trees, blocking sunlight and lowering tree bud temperatures, preventing adverse yield effects of low chill. Climate predictions for California suggest that wi...

Image adaptation, one of the essential problems in adaptive content delivery for universal access, has been actively explored for some time. Most existing approaches have focused on generic adaptation towards saving file size under constraints in client environment and hardly paid attention to user’s perception on the adapted result. Meanwhile, the major limitation on the user’s delivery contex...

Today, technologies are providing mobile terminals with much more powerful computational abilities. Such improvement has made it possible to run many complex applications on mobile devices. However, many of these new applications are also resource demanding. Lacking sufficient resources would cause performance failures and impact negatively on the users’ quality of experience. In order to impro...

Advances in computing, networking, and multimedia technologies have led to a tremendous growth of sports video content and accelerated the need of analysis and understanding of sports video content. Sports video analysis has been a hot research area and a number of potential applications have been identified. In this paper, we summarize our research achievement on semantics extraction and autom...

Ubiquitous services have gained increasing attentions in the area of mobile communication aiming to allow service access anywhere, anytime and anyhow while keeping complexity to a minimum for both users and service providers. Ubiquitous environment features a wide range and an increasing number of access devices and network technologies. Context-aware content/service adaptation is deemed necess...