Distributed spectrum sensing and channel selection in opportunistic wireless personal area networks
MobiOpp '10 Proceedings of the Second International Workshop on Mobile Opportunistic Networking
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Monitoring technologies leveraging on heterogeneous sensor networks are becoming increasingly important in al- most every application scenario where pervasive data col- lection is needed. In current sensor networks deployments, many low-level protocols and functions details dependent on used network technology are explicitly handled at application level, in a cross-layer fashion. This is not a critical issue in ho- mogeneous networks, where services are provided by a unique network platform. However, in applications where several multi-purposes heterogeneous sensor networks co- exist and interoperate, managing low-level details at appli- cation level can be a complex and time-consuming task, dis- tracting the development of the back-end application logic. In order to overcome these limitations, it is necessary to de-couple low-layer details from application layer in order to achieve lower integration efforts, improve code reusabil- ity and gain higher flexibility. This paper describes the design of a framework for sen- sor network message processing and interpretation, focus- ing on issues related to the integration between sensor net- works gateways (the so-called "Sink nodes") and back- end applications. The proposed solution relies on NetPDL, an application-independent, XML-based packet format de- scription language [4]. The advantages of this approach are highlighted by pre- senting three use-cases of the proposed solution.