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Time synchronization enhancements in wireless networks with ultra wide band communications

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Time synchronization enhancements in wireless networks with ultra wide band communications

dc.contributor.author	Pérez Solano, Juan J.
dc.contributor.author	Felici Castell, Santiago
dc.contributor.author	Soriano Asensi, Antonio
dc.contributor.author	Segura Garcia, Jaume
dc.date.accessioned	2023-06-21T10:53:12Z
dc.date.available	2023-06-22T04:45:05Z
dc.date.issued	2022	es_ES
dc.identifier.citation	Pérez-Solano, J. J., Felici-Castell, S., Soriano-Asensi, A., & Segura-Garcia, J. (2022). Time synchronization enhancements in wireless networks with ultra wide band communications. Computer Communications, 186, 80-89.	es_ES
dc.identifier.uri	https://hdl.handle.net/10550/88402
dc.description.abstract	The emergence of low cost Ultra Wide Band (UWB) transceivers has enabled the implementation of Wireless Sensor Networks (WSN) based on this communication technology. These networks are composed of distributed autonomous low cost nodes (also known as motes) with their own processing unit, memory and communications. Usually these nodes are power-limited and due to the poor performance and quality of their clocks, time synchronization is in the order of milliseconds and in some specific scenarios till microseconds. The integration of commercial UWB transceivers in these nodes can improve the synchronization accuracy. In particular, we focus on WSN nodes based on off-the-shelf commercial products and commodity hardware. In this paper we analyze step by step, from a practical and experimental point of view, the different elements involved in the time synchronization using UWB technology on WSN with static nodes. From our experimental results, with timestamps captured during the packet exchanges, we analyze and discuss the application of different communication schemes and simple statistical methods (in order to be run in WSN nodes). The results obtained with timestamps captured at the UWB transceivers and by using linear regression show that the lowest time synchronization error achieved between two nodes is 0.14 ns. Employing the same setup and performing the synchronization with the timestamps captured internally at the microcontrollers of the nodes, the error rises to 31 ns, due to the higher time period of the microcontrollers’ timers and the inaccuracies that affect the acquisition of the timestamps. Nevertheless, the synchronization of the microcontrollers’ clocks allows the setting up of a common time reference at the network nodes, enabling the implementation of applications with tight synchronization requirements, such as collaborative beamforming and ranging.	es_ES
dc.language.iso	en	es_ES
dc.publisher	Elsevier	es_ES
dc.subject	time synchronization	es_ES
dc.subject	ultra wide band	es_ES
dc.subject	IEEE 802.15.4	es_ES
dc.subject	linear regression	es_ES
dc.subject	wireless sensor networks	es_ES
dc.title	Time synchronization enhancements in wireless networks with ultra wide band communications	es_ES
dc.type	journal article	es_ES
dc.subject.unesco	UNESCO::CIENCIAS TECNOLÓGICAS	es_ES
dc.identifier.doi	10.1016/j.comcom.2022.01.012	es_ES
dc.accrualmethod	CI	es_ES
dc.embargo.terms	0 days	es_ES
dc.type.hasVersion	VoR	es_ES
dc.rights.accessRights	open access	es_ES