Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/72798
Title: Clock synchronization over bluetooth
Authors: Pham, Bao Trung
Keywords: DRNTU::Engineering::Computer science and engineering::Computer systems organization::Computer-communication networks
Issue Date: 2017
Abstract: Clock synchronization is key to many applications of wearable device networks. High synchronization accuracy requires platform-dependent hardware-level timestamping, which is not possible for wearable devices from different platforms. Clock synchronization done on application layer ensures universality for heterogenous platforms but has lower accuracy. This research aims to evaluate the universal principle of Network Time Protocol, an application level approach, and propose a new approach using external signals to assist clock synchronization. Different types of external input from sensors are studied to determine the most suitable for clock synchronization. These different approaches are implemented using Adafruit Flora and Android smartphones, which support Bluetooth and have sensors to detect external signals. Evaluation of results shows that clock synchronization assisted by audio input has the best performance, with error of less than 1 millisecond.
URI: http://hdl.handle.net/10356/72798
Rights: Nanyang Technological University
Fulltext Permission: restricted
Fulltext Availability: With Fulltext
Appears in Collections:SCSE Student Reports (FYP/IA/PA/PI)

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