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2003 Kluwer Academic Publishers. Manufactured in The Netherlands. The AROUND Architecture for Dynamic Location-Based Services
"... Abstract. This paper presents a generic concept of location-based service as an abstraction for supporting the association between computa-tional resources and location. The objective is to extend the advantages of service-based architectures to the development of location-based systems, thus provid ..."
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Abstract. This paper presents a generic concept of location-based service as an abstraction for supporting the association between computa-tional resources and location. The objective is to extend the advantages of service-based architectures to the development of location-based systems, thus providing a more open and extensible alternative to the “vertical ” approaches typically used in this type of system. The novel AROUND architecture is proposed as an approach for supporting location-based services in the Internet environment. AROUND provides a service location infrastructure that allows applications to select services that are specifically associated with their current location. The architecture includes a flexible scope model that defines the association between services and location, and a service location infrastructure organised by spatial criteria and optimised for location-based queries. Based on a prototype implementation of this architecture, we have developed two case studies that illustrate the use of this approach for developing location-based systems. The overall results provide a valu-able insight into the applicability of the architecture, and suggest that this model of location-based services can provide a useful approach for the development of a wide range of location-based applications.