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2 1.1. OBJECTIVES Until now, WSNs and their applications have been developed without considering an integrated management solution. Several interesting works may be found in the literature about specific issues in wireless sensor networks (see Section 2.5). Some of these proposals aim at the specific function for determined WSN application, for example routing in flat networks that do environmental monitoring. To the best of our our knowledge, it has not been found in the literature any work that proposes a management architecture for WSNs. The same is true for a generic information model that includes management (managed object classes and WSN models) and support (support object classes) information. The task of building and deploying management solutions in environments where there will be tens of thousands of network elements with particular features and organization is not trivial. To make things worse, due to physical restrictions of unattended sensor nodes, especially, energy and bandwidth restrictions, this task becomes difficult. 1.1 Objectives This thesis aims to study the WSNs management problem in order to understand the needs, requirements and open questions about this theme as well as to identify the differences between WSNs management and traditional management In order to contribute to the progress of this and other correlated areas, this thesis proposes a framework for WSNs management. This framework must be simple, adherent to network idiosyncrasies including its dynamic behavior, and efficient in the use of scarce resources. The proposed framework introduces a novel organization for WSNs management considering the two well-known management dimensions, namely, management levels, management functional areas, and a novel dimension called WSN functionalities. This innovative dimension is a proposal of this thesis as well. The traditional management dimensions are revisited from a WSN perspective. The framework includes a scheme to obtain management functions and a scheme to build management services and applications from the three management dimensions. A list of these management functions and services are provided. The WSN management framework also includes the proposition of a management archi-
CHAPTER 1. INTRODUTION 3 tecture called MANNA 1 . This architecture is based on the paradigm of self-management which is management based on the use of automatic functions and services with a minimum of human interference. The implementation of a management system is not objective of this thesis. Its goal is to propose a management framework for WSNs. In this direction, some experiments are presented to show how the proposed architecture achieve its objectives. One of the major goals of a management architecture is to promote network resources productivity and the quality of the service provided. 1.2 Contributions There are several significant differences in the management of traditional networks and WSNs and until now, no work has addressed these differences [84]. In this sense, this work presents a contribution to the field, since it proposes a WSNs management architecture. The contributions presented in this thesis are: • A management framework which allows to differentiate application functionalities from management functionalities of the WSNs. This management framework includes: a management architecture for WSNs called MANNA which is organized in information, functional, and physical architectures, and the proposition of an organization for WSNs management from three management dimensions, namely management levels, management functional areas and a novel management dimension called “WSN functionalities”. The traditional management dimensions are rethought for WSNs; • A novel approach to build management services and management applications considering the kind of WSN application; 1 MANNA from Hebrew Man hu: “What is this?” – food that God provided for its people during the journey through the wilderness (Exodus 16:31 in the Bible). An unexpected and very welcome gift or advantage. A signal of confidence.
Page 1 and 2: Linnyer Beatrys Ruiz MANÁ: Uma Arq
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Page 6 and 7: iv Cida, Helvécio, Belkiz, Lizete,
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Chapter 6 Conclusion This chapter p
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CHAPTER 6. CONCLUSION 139 environme
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REFERENCES 141 References [1] The c
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REFERENCES 143 [22] Distributed Man
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REFERENCES 147 [62] Millennial Net.
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REFERENCES 151 (MC2R), 6(2), April
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Appendix A Using Self-Diagnostic Ma
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