Gerenciamento de serviços em redes de sensores sem fio autonômicas

Abstract

A Wireless Sensor Network is a distributed sensing tool, that disseminates collected data and processed information to one or more external entities called observers. WSNs can provide three types of basic services: sensing, processing and disseminating. A shortcoming of any of these services can disturb the network goals. However, failures are not exceptions in WSNs, since problems as energy exhaustion, communication range loss or physical damages are usual incidents. Considering the need of managing WSNs in an efficient manner, improving information quality and availability, and taking into account that in the future the management of these networks will be integrated, this work proposes the use of the Information Technology Infrastructure Library (ITIL), a de facto standard for IT service management, in the design of self-healing WSNs. We also propose a service management approach for a self-managed network that dynamically adapts itself in order to maintain the service availability and to promote the resources productivity. This approach aims to employ the self-healing service in WSNs, allowing them to discover, examine, diagnose and react to dysfunctions. Results show that service management applied to a self-healing WSN extends the longevity and availability of the network.