Performance evaluation of time synchronization and clock drift compensation in wireless personal area networks
2012 (English)In: BodyNets '12 Proceedings of the 7th International Conference on Body Area Networks, ICST , 2012, 153-158 p.Conference paper (Refereed)
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.
Place, publisher, year, edition, pages
ICST , 2012. 153-158 p.
Time synchronization, clock drift, data fusion, Bluetooth, IEEE 802.15.4.
IdentifiersURN: urn:nbn:se:kth:diva-123218DOI: 10.4108/icst.bodynets.2012.250342ScopusID: 2-s2.0-84908592912ISBN: 978-193696860-2OAI: oai:DiVA.org:kth-123218DiVA: diva2:625488
7th International Conference on Body Area Networks, BODYNETS 2012, Oslo, Norway, 24 September 2012 through 26 September 2012
QC 201306052013-06-042013-06-042016-02-22Bibliographically approved