Passive Link Quality Estimation for Accurate and Stable Parent Selection in Dense 6TiSCH Networks

Industrial applications are increasingly demanding more low-power operations, deterministic communications and end-to-end reliability that approaches 100%. By keeping nodes time-synchronized and by employing a channel hopping approach, IEEE 802.15.4-TSCH (Time-Slotted Channel Hoping) aims at providing high-level network reliability. For this, however, we need to construct an accurate schedule, able to exploit reliable paths. In particular, radio links with high Packet Error Rate should not be exploited since they are less energy-efficient (more retransmissions are required) and they negatively impact the reliability. In this work, we take advantage of the continuously advertisement packets transmitted by the nodes to identify neighbors with a good link quality. We argue that when a node ranks its neighbors through their rate of broadcast packets received, it can identify stable parents, even when the data packets use different, collision-free transmission opportunities. Our experiments on a large-scale platform highlight that our approach improves the convergence delay, identifying the best routes to the border router during the bootstrapping (or reconverging) phase without adding any extra control packet.

R. Teles Hermeto , A. Gallais , K. Van Iaerhoven , F. Theoleyre

European Wireless Sensor Networks (EWSN) - 2018

@Inproceedings{4-TGVT18,
 author = {Teles Hermeto, R. and Gallais, A. and Van Iaerhoven, K. and Theoleyre, F.},
 title = {Passive Link Quality Estimation for Accurate and Stable Parent Selection in Dense 6TiSCH Networks},
 booktitle  = {European Wireless Sensor Networks (EWSN)},
 month = {Feb},
 year = {2018},
 organization = {ACM},
 type = {Selective conference},
 x-international-audience = {Yes},
 x-language = {EN},
 url = {http://publis.icube.unistra.fr/4-TGVT18}
}