Multi‐Source Time Synchronization in IEEE Std 802.15.4‐2015 TSCH Networks. Issue 2 (17th February 2020)

• Record Type: Journal Article
• Authors: Papadopoulos, Georgios Z.; Fafoutis, Xenofon; Thubert, Pascal
• Is Part Of: Internet technology letters. Volume 3:Issue 2(2020)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2020-02-17
• Subjects: guard time -- IEEE 802.15.4‐2015 -- industrial IoT -- multiple time sources -- synchronization -- TSCH; Internet -- Periodicals; 004.67805
• DOI: 10.1002/itl2.148
• Languages: English
• ISSNs: 2476-1508

Abstract

Abstract : 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.