In the last few years telecommunications and Internet have spread all over the world, in a pervasive way, connecting millions of devices, people, sensors and services without a planned strategy. In such scenario the discovery of services represent still an open challenging research field. To address that problem this paper proposes a context-aware semantic service discovery architecture designed to perform distributed service discovery in heterogeneous networks. This novel architecture is technology independent and compatible with most of the existent service discovery protocols; it inherits and extends the results of the last research groups in the field of context-aware service discovery based on the use of semantic languages. The present work presents the first results of the service discovery design activity which has been carried out within DAIDALOS II (Designing Advanced network Interfaces for the Delivery and Administration of Location independent, Optimised personal Services), a project granted in the European 6th Framework Research Programme, within the IST (Information Society and Technology) thematic area
Wireless Metropolitan Area Networks based on IEEE 802.16d/e standards are soon to be deployed in several countries. However, there is lack of published literature with results from actual testbeds. This paper introduces the work done in the EU Sixth Framework Programme Project WEIRD to design and set up WiMAX testbeds in four EU countries. We describe the methodlogy followed, detail our implementation and present results from the testbeds, as deployed in the first phase of WEIRD. The testbeds are used to demonstrate how WiMAX technology can be used to extend the connectivity of the panEuropean data communications network (GEANT2) to isolated and impervious areas and, furthermore, to assure end-to-end quality of service to novel applications.
IJCCBS covers all topics related to the engineering of computer-based systems (CBS) employed in mission and safety-critical applications. CBS feature increasingly large, distributed and heterogeneous architectures, which complicate their design and analysis. CBS are not isolated computer systems: context awareness, environmental factors and interaction with systems of different natures have become important aspects. Furthermore, dependability, resiliency, trustworthiness, survivability and performability are some of the many essential and non-elementary properties which often need to be predicted and demonstrated for such systems.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.