C. Oliveira, M. Wermelinger, J. Fiadeiro, A. Lopes
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An architectural approach to mobility - the handover case study
Community is a formal approach to software architecture. Its main characteristics are: a precise, yet intuitive mathematical semantics based on categorical diagrams; a clear separation between computation, coordination, and distribution (including mobility); and a simple state-based language, inspired by Unity, to describe behaviour. This paper discusses the applicability of this approach to location-aware systems through the modelling of the GSM handover protocol, namely the way communication with a moving cellular phone passes from one station to another. The case study was developed with the Community Workbench, a tool that animates distributed and mobile architectural models.
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