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Multi‐Source Time Synchronization in IEEE Std 802.15.4‐2015 TSCH Networks
Author(s) -
Papadopoulos Georgios Z.,
Fafoutis Xenofon,
Thubert Pascal
Publication year - 2020
Publication title -
internet technology letters
Language(s) - English
Resource type - Journals
ISSN - 2476-1508
DOI - 10.1002/itl2.148
Subject(s) - network packet , computer network , computer science , ieee 802.15 , synchronization (alternating current) , clock synchronization , clock drift , wireless sensor network , channel (broadcasting) , wireless , real time computing , telecommunications
IEEE std 802.15.4‐2015 Time Slotted Channel Hopping (TSCH) extends and replaces multiple proprietary industrial standards to support ultra‐reliable and ultra‐low power operation in Industrial Internet of Things. Under TSCH, all devices must remain continuously synchronized with their time source neighbor. To do so, the nodes either periodically exchange control packets or data packets to compensate for clock drift. However, single time source neighbor scheme endangers de‐synchronization in the wireless network. In this letter, we propose using multiple time source parents to improve the synchronization of the network.