Clock drift compensation in a time synchronous channel hopping network

Disclosed are various embodiments for compensating for clock drift between nodes in a time synchronous network. A node receives time synchronization information from a parent node in the network. A drift between a clock of the node and a clock of the parent node is determined based upon the time syn...

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Bibliographic Details
Main Author Hartman James
Format Patent
LanguageEnglish
Published 21.03.2017
Subjects
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
MULTIPLEX COMMUNICATION
TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHICCOMMUNICATION
WIRELESS COMMUNICATIONS NETWORKS
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Summary:Disclosed are various embodiments for compensating for clock drift between nodes in a time synchronous network. A node receives time synchronization information from a parent node in the network. A drift between a clock of the node and a clock of the parent node is determined based upon the time synchronization information. The node identifies a number of time slots of the network since making a last time synchronization based on previous time synchronization information transmitted from the parent node. A compensation interval is calculated that represents a number of the time slots over which the clock of the node deviated, with respect to the parent node, by a predefined compensation value. The node compensates, by the compensation value, one of the time slots according to the compensation interval.
Bibliography:Application Number: US201414272582