Avaliando aspectos de toler ˆ ancia a falhas em protocolos de roteamento para redes de sensores sem fio

Fault tolerance is an essential requirement in the design of protocols and ap- plications for Wireless Sensor Networks (WSNs) since communication and hardware failures are frequent. In this paper we studied the resilience of routing protocols for continuous data dissemination WSNs in face of faults. The main causes of silent failure are presented, including some security attacks. Those failures are classified according to extension and persistence, and such classification is used to evaluate routing proto- cols for continuous data dissemination networks. Results show that failures under a large region of the network are the most damaging. The paper also shows how routing protocols may save energy by temporarily turning off disconnected nodes. Resumo. Tolerˆ

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