Reliability of Wireless Sensor Networks

Sensors

Antônio Dâmaso²  Nelson Rosa¹ 

[1] Centro de Informática, Universidade Federal de Pernambuco, Recife, PE, 50740-560, Brazil;

关键词: wireless sensor network;    reliability;    power consumption;    reliability block diagram;   

DOI  :  10.3390/s140915760

来源: mdpi

【 摘 要 】

Wireless Sensor Networks (WSNs) consist of hundreds or thousands of sensor nodes with limited processing, storage, and battery capabilities. There are several strategies to reduce the power consumption of WSN nodes (by increasing the network lifetime) and increase the reliability of the network (by improving the WSN Quality of Service). However, there is an inherent conflict between power consumption and reliability: an increase in reliability usually leads to an increase in power consumption. For example, routing algorithms can send the same packet though different paths (multipath strategy), which it is important for reliability, but they significantly increase the WSN power consumption. In this context, this paper proposes a model for evaluating the reliability of WSNs considering the battery level as a key factor. Moreover, this model is based on routing algorithms used by WSNs. In order to evaluate the proposed models, three scenarios were considered to show the impact of the power consumption on the reliability of WSNs.

【 授权许可】

CC BY   
© 2014 by the authors; licensee MDPI, Basel, Switzerland.