Frédéric Weis

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Development of wireless communications enables the rise of networking applications in embedded systems. Web interactions, which are the most spread, are nowadays available on wireless PDAs 1. Moreover, we can observe a development of ubiquitous computing. Based on this concept , many works aim to consider user's context as part of the parameters of the(More)
Development and projections of wireless PDAs enable to envisage the design of new application classes that exploit short range and direct communications (e.g. one-hop communications). In a close future we may imagine mobile users dynamically and spontaneously exchanging information as soon as they are close enough. In such a context, a connection between(More)
The use of wireless P<sc>DA</sc>s is foreseen to outrun the one of P<sc>C</sc>s in the near future. However, for this to actually happen, adequate software environments must be devised in order to allow the execution of various types of applications. This paper introduces the base features of such an environment, which is a customizable J<sc>VM</sc>-based(More)
Mobile cellular networks are now largely deployed, and mobile customers are used to place and to receive calls at any location. The network coverage is continuous, but radio conditions met by users are not homogeneous. Thus, data rate is varying according to user mobility. In this paper, we propose to discriminate terminals by their radio conditions in(More)
Existing activity recognition approaches in the smart home domain suffer from poor human activity models. Combining expertise from cognitive ergonomics and ubiquitous computing, we discuss the hard technical challenges to address when leveraging a realistic model of human activity. We present the architecture of a prototype smart home system that we are(More)