This paper describes a methodology and a programming support that use the SIP protocol as a universal communication bus in pervasive computing environments. In doing so, our work enables homogeneous communications between heterogeneous distributed entities. We present a classification of a wide variety of entities in terms of features, capabilities and network connectors. Based on this classification, a methodology and a programming support are described for connecting entities on the SIP communication bus. This work has been validated by applications using the SIP communication bus to coordinate widely varying entities, including serial-based sensors (RS232, 1-Wire), ZigBee devices, X10 devices, PDA, native SIP entities, and software components.

Pervasive computing applications involve both software concerns, like any software system, and integration concerns, for the constituent networked devices of the pervasive computing environment. This situation is problematic for testing because it requires acquiring, testing and interfacing a variet

Pervasive computing applications involve both software concerns, like any software system, and integration concerns, for the constituent networked devices of the pervasive computing environment. This situation is problematic for testing because it requires acquiring, testing and interfacing a variet

Pervasive computing applications involve both software concerns, like any software system, and integration concerns, for the constituent networked devices of the pervasive computing environment. This situation is problematic for testing because it requires acquiring, testing and interfacing a variety of software and hardware entities. This process can rapidly become costly and time-consuming when the target environment involves many entities. In this demonstration, we present DiaSim, a simulator for pervasive computing applications. To cope with widely heterogeneous entities, DiaSim is parameterized with respect to a description of a target pervasive computing environment. This description is used to generate both a programming framework to develop the simulation logic and an emulation layer to execute applications. Furthermore, a simulation renderer is coupled to DiaSim to allow a simulated pervasive system to be visually monitored and debugged.

In this paper, we present a domain-specific interface definition language (IDL) and its compiler, dedicated to the development of pervasive computing applications. Our IDL provides declarative support for concisely characterizing a pervasive computing environment. This description is (1) to be used by programmers as a high-level reference to develop applications that coordinate entities of the target environment and (2) to be passed to a compiler that generates a programming framework dedicated to the target environment. This process enables verifications to be performed prior to runtime on both the declared environment and a given application. Furthermore, customized operations are automatically generated to support the development of pervasive computing activities, such as service discovery and session negotiation for stream-oriented devices.

In this paper, we propose a novel approach for authoring a diversity of multimedia resources (audio, video, text, images, etc). We introduce a prototype authoring tool (called M-Tool) relying on a metadata model that unifies MPEG-21 and TV-anytime descriptions to edit and enrich audiovisual contents with metadata. Additional innovative functionalities extending the M-Tool are also presented. This new generation of metadata authoring tools is designed and currently used for scenarios of TV and news broadcasting, and video on demand broadcasting in the framework of the IST Integrated European Project ENTHRONE.