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http://hdl.handle.net/10609/148564
Título : | 6TiSCH on SCμM: Running a Synchronized Protocol Stack without Crystals |
Autoría: | Chang, Tengfei Watteyne, Thomas Wheeler, Brad Maksimovic, Filip Khan, Osama Mesri, Sahar Lee, Lydia Suciu, Ioana Burnett, David C. Vilajosana, Xavier Pister, Kris |
Citación : | Chang, T. [Tengfei]. Watteyne, T. [Thomas]. Wheeler, B. [Brad]. Maksimovic, F. [Filip]. Khan, O. [Osama]. Mesri, S. [Sahar]. Lee, L. [Lydia]. Suciu, I. [Ioana]. Burnett, D. [David]. Vilajosana, X. [Xavier]. Pister, K. [Kris]. (2020). 6TiSCH on SCμM: Running a Synchronized Protocol Stack without Crystals. Sensors, 20, 1912. https://doi.org/10.3390/s20071912 |
Resumen : | We report the first time-synchronized protocol stack running on a crystal-free device. We use an early prototype of the Single-Chip micro Mote, SCμM, a single-chip 2 × 3 mm2 mote-on-a-chip, which features an ARM Cortex-M0 micro-controller and an IEEE802.15.4 radio. This prototype consists of an FPGA version of the micro-controller, connected to the SCμM chip which implements the radio front-end. We port OpenWSN, a reference implementation of a synchronized protocol stack, onto SCμM. The challenge is that SCμM has only on-chip oscillators, with no absolute time reference such as a crystal. We use two calibration steps – receiving packets via the on-chip optical receiver and RF transceiver – to initially calibrate the oscillators on SCμM so that it can send frames to an off-the-shelf IEEE802.15.4 radio. We then use a digital trimming compensation algorithm based on tick skipping to turn a 567 ppm apparent drift into a 10 ppm drift. This allows us to run a full-featured standards-compliant 6TiSCH network between one SCμM and one OpenMote. This is a step towards realizing the smart dust vision of ultra-small and cheap ubiquitous wireless devices. |
Palabras clave : | crystal-free 6TiSCH SCμM smart dust |
DOI: | https://doi.org/10.3390/s20071912 |
Tipo de documento: | info:eu-repo/semantics/article |
Versión del documento: | info:eu-repo/semantics/publishedVersion |
Fecha de publicación : | 30-mar-2020 |
Licencia de publicación: | https://creativecommons.org/licenses/by/4.0/ |
Aparece en las colecciones: | Articles cientÍfics Articles |
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Fichero | Descripción | Tamaño | Formato | |
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sensors-20-01912-v2.pdf | 1,19 MB | Adobe PDF | Visualizar/Abrir |
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