-
Adjunct Proceedings of the 10th International Conference on Ubiquitous Computing (UBICOMP'08), Seoul, South Korea, Video paper; 09/2008
-
EURASIP J. Emb. Sys. 01/2008; 2008.
-
17th IEEE International Workshops on Enabling Technologies: Infrastructures for Collaborative Enterprises, WETICE 2008, Rome, Italy, June 23-25, 2008, Proceedings; 01/2008
-
[show abstract]
[hide abstract]
ABSTRACT: An integrated, autonomous stick-on computing platform is proposed, consisting of (i) the Peer-it stick-on, multi-sensor, multi-actuator computer hardware, (ii) the Peer-it component-based software framework, and (iii) the Peer-it profile markup language PeerML, supporting spontaneous interaction among such platforms. The platform implements Peer-to-Peer computing principles in a self-contained, miniaturized, universal and scalable way, giving raise for application scenarios where the real-world artefacts like e.g. machines, tools or appliances–literally every thing–equipped with Peer-it technology can operate in spontaneously interacting, goal-oriented ensembles.Technically, preferences (like capabilities and goals) and context (like time, geo-position, owner, environmental conditions, etc.) of peers are kept as a profile encoded in PeerML in the local memory of Peer-its, and carried along wherever they move in space. Once peers come into spatial proximity of each other, profiles are exchanged via wireless communication, and the “similarity” of preferences is analyzed. In the case of “matching” preferences, an associated application is notified on both peers.Besides a fully functional autonomous hardware platform integrating multiple sensors, actuator arrays and wireless communication technologies, the Peer-it stick-on computer, a low-memory footprint, OSGi compliant Peer-it software framework has been implemented. We demonstrate in a flexible manufacturing systems (FMS) scenario, how the Peer-it technology can improve over centralized FMSs with respect to fault tolerance, scalability, flexibility in reconfiguration, productivity and efficiency.
Pervasive and Mobile Computing. 01/2008; 4:448-479.
-
Workshop on Information Visualization and Interaction Techniques for Collaboration across Multiple Displays, Adjunct Proceedings of CHI'06, April 22--23, 2006, Montreal, Canada; 04/2006
-
2006 International Conference on Autonomic and Autonomous Systems (ICAS 2006), 16-21 July 2006, Silicon Valley, California, USA; 01/2006
-
[show abstract]
[hide abstract]
ABSTRACT: Security and privacy in mobile ad-hoc peer-to-peer environments are hard to attain, especially when working with passive objects without own processing power. We introduce a method for integrating such objects into a peer-to-peer environment without infrastructure components while providing a high level of privacy and security for peers interacting with objects. The integration is done by equipping passive objects with public keys, which can be used by peers to validate proxies acting on behalf of the objects. To overcome the problem of limited storage capacity on small embedded objects, ECC keys are used.
04/2004;
-
[show abstract]
[hide abstract]
ABSTRACT: Mobile Peer-to-Peer (P2P) computing applications involve collections of heterogeneous and resource-limited devices (such as PDAs or embedded sensor-actuator systems), typically operated in ad-hoc completely decentralized networks and without requiring dedicated infrastructure support. Short-range wireless communication technologies together with P2P networking capabilities on mobile devices are responsible for a proliferation of such applications, yet these applications are often complex and monolithic in nature due to the lack of lightweight component/container support in these resource-constrained devices. A threatening field of application is "smart space" control, i.e. software architectures to control various home appliances and embedded home facilities in a personalized, spontaneous and intuitive way. Future home environments are expected to be highly populated by ubiquitous computing technology, allowing to integrate various aspects of home activities seamlessly into walls, floors, furniture, appliances, and even clothing – thus raising the need for lightweight, versatile and component based software architectures to harness such technology rich environments. In this paper we describe our lightweight software component model P2Pcomp that addresses the development needs for mobile P2P applications. An abstract, flexible, and high-level communication mechanism among components is developed via a ports concept, supporting protocol independence, location independence, and (a)synchronous invocations; dependencies are not hard-coded in the components, but can be defined at deployment or runtime, providing late-binding and dynamic rerouteability capabilities. Peers can elect to provide services as well as consume them, services can migrate between containers, and services are ranked to support Quality-of-Service choices. Our lightweight container realization leverages the OSGi platform and can utilize various P2P communication mechanisms such as JXTA. A "smart space" application scenario demonstrates how P2Pcomp supports flexible and highly tailorable mobile P2P applications.
-
[show abstract]
[hide abstract]
ABSTRACT: The design principles of pervasive computing software ar-chitectures are widely driven by the need for opportunistic interaction among distributed, mobile and heterogeneous entities in the absence of global knowledge and naming conventions. Peer-to-Peer (P2P) frame-works have evolved, abstracting the access to shared, while distributed information. To bridge the architectural gap between P2P applications and P2P frameworks we propose patterns as an organizational schema for P2P based software systems. Our Peer-it hardware platform is used to demonstrate an application in the domain of flexible manufacturing systems.
