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ThinkMind // International Journal On Advances in Networks and Services, volume 4, numbers 3 and 4, 2011 // View article netser_v4_n34_2011_7


A Cognitive Handoff: Holistic Vision, Reference Framework, Model-driven Methodology and Taxonomy of Scenarios

Authors:
Francisco A. Gonzalez-Horta
Rogerio A. Enriquez-Caldera
Juan M. Ramirez-Cortes
Jorge Martinez-Carballido
Eldamira Buenfil-Alpuche

Keywords: Cognitive handoff; handoff methodology; handoff scenarios

Abstract:
Current handoffs are not designed to achieve multiple desirable features simultaneously. This weakness has resulted in handoff schemes that are seamless but not adaptive, or adaptive but not secure, or secure but not autonomous, or autonomous but not correct, etc. To face this limitation, in this paper we envision and develop a new kind of handoff system, which is context-aware in the sense that uses information from its external and internal environment: a cognitive handoff. Thus, the resulting cognitive handoff can attain multiple purposes simultaneously through trading-off multi-criteria and based on a variety of policies. We also discuss the difficulties of developing cognitive handoffs and propose a new model-driven methodology for their systematic development. The theoretical framework of this methodology is the holistic approach, the functional decomposition method, the model-based design paradigm, and the theory of design as scientific problem-solving. We applied the proposed methodology and obtained the following results: (i) a correspondence between handoff purposes and quantitative environment information, (ii) a novel taxonomy of handoff mobility scenarios, and (iii) an original state-based model representing the functional behavior of the handoff process.

Pages: 324 to 342

Copyright: Copyright (c) to authors, 2011. Used with permission.

Publication date: April 30, 2012

Published in: journal

ISSN: 1942-2644

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