Link Quality Metrics in Large Scale Indoor Wireless Sensor Networks

Ana Bildea; Olivier Alphand; Franck Rousseau; Andrzej Duda

doi:10.1109/PIMRC.2013.6666451

Link Quality Metrics in Large Scale Indoor Wireless Sensor Networks

Ana Bildea ¹ Olivier Alphand ¹ Franck Rousseau ¹ Andrzej Duda ¹

1 Drakkar

LIG - Laboratoire d'Informatique de Grenoble

Abstract : We report results of measurements on SensLAB, an indoor wireless sensor network testbed with a large number of nodes equipped with a CC1101 radio chip. We analyze RSSI and LQI to find the best way to discriminate good links from weak ones and in particular, to derive a metric that estimates the Packet Reception Ratio (PRR) the best. To obtain an estimator of PRR, we have fitted a Fermi-Dirac function to the scatter diagram of the average and standard variation of LQI. The function enables us to find PRR for a given level of LQI. We evaluate the estimator by computing PRR over a varying size window of transmissions and comparing with the estimator.

Keywords : Received Signal Strength indicator (RSSI) Link Quality Indicator (LQI) link and routing metrics Wireless Sensor Networks (WSN) SensLAB

Document type :

Conference papers

Domain :

Computer Science [cs] / Networking and Internet Architecture [cs.NI]

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https://hal.archives-ouvertes.fr/hal-01199098
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