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Computational Science and Its Applications – ICCSA 2005

Volume 3481 of the series Lecture Notes in Computer Science pp 1156-1166

Ubiquitous Systems and Petri Nets

  • David de Frutos EscrigAffiliated withDepartamento de Sistemas Informáticos y Programación, Universidad Complutense de Madrid
  • , Olga Marroquín AlonsoAffiliated withDepartamento de Sistemas Informáticos y Programación, Universidad Complutense de Madrid
  • , Fernando Rosa VelardoAffiliated withDepartamento de Sistemas Informáticos y Programación, Universidad Complutense de Madrid

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Abstract

Several years before the popularization of the Internet, Mark Weiser proposed the concept of ubiquitous computing with the purpose of enhancing the use of computers by making many computers available throughout the physical environment, but making them effectively invisible to the user. Nowadays, such idea affects all areas of computing science, including both hardware and software. In this paper, a formal model for ubiquitous systems based on Petri nets is introduced and motivated with examples and applications. This simple model allows the definition of two-level ubiquitous systems, composed of a collection of processor nets providing services, and a collection of process nets requesting those services. The modeled systems abstract from middleware details, such as service discovery protocols, and security infrastructures, such as PKI’s or trust policies, but not from mobility or component compatibility.