Research Article
Performance Evaluation of Time Synchronization and Clock Drift Compensation in Wireless Personal Area Networks
@INPROCEEDINGS{10.4108/icst.bodynets.2012.250342, author={Thomas Lindh and Jonas W\ae{}hsl\^{e}n and Ibrahim Orhan and Dennis Sturm}, title={Performance Evaluation of Time Synchronization and Clock Drift Compensation in Wireless Personal Area Networks}, proceedings={7th International Conference on Body Area Networks}, publisher={ICST}, proceedings_a={BODYNETS}, year={2012}, month={11}, keywords={time synchronization clock drift data fusion bluetooth ieee 802154}, doi={10.4108/icst.bodynets.2012.250342} }- Thomas Lindh
Jonas Wåhslén
Ibrahim Orhan
Dennis Sturm
Year: 2012
Performance Evaluation of Time Synchronization and Clock Drift Compensation in Wireless Personal Area Networks
BODYNETS
ICST
DOI: 10.4108/icst.bodynets.2012.250342
Abstract
Efficient algorithms for time synchronization, including compensation for clock drift, are essential in order to obtain reliable fusion of data samples from multiple wireless sensor nodes. This paper evaluates the performance of algorithms based on three different approaches; one that synchronizes the local clocks on the sensor nodes, and a second that uses a single clock on the receiving node, (e.g. a mobile phone) and a third that uses broadcast messages. The performances of the synchronization algorithms are evaluated in wireless personal area networks, especially Bluetooth piconets and ZigBee/IEEE 802.15.4 networks. A new approach for compensation of clock drift and a realtime implementation of single node synchronization from the mobile phone are presented and tested. Finally, applications of data fusion and time synchronization are shown in two different use cases; a kayaking sports case, and monitoring of heart and respiration of prematurely born infants.