CheepSync: a time synchronization service for resource constrained bluetooth low energy advertisers
Abstract
Clock synchronization is highly desirable in distributed systems, including many applications in the Internet of Things and Humans (IoTH). For IoTH, Bluetooth Low Energy (BLE) - a subset of the recent Bluetooth v4:0 stack - provides a low-power and loosely coupled mechanism for sensor data collection with ubiquitous units (e.g., smartphones and tablets) carried by humans. This fundamental design paradigm of BLE is enabled by a range of broadcast advertising modes. While its operational benefits are numerous, the lack of a common time reference in the broadcast mode of BLE has been a fundamental limitation. This work presents and describes CheepSync: a time synchronization service architecture for BLE advertisers. We implement CheepSync on custom designed nRF24Cheep beacon platforms (as broadcasters) and commercial off-the-shelf Android ported smartphones (as passive listeners); and show that the average (single hop) time synchronization accuracy is in the 10 μs range.
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Many systems use beacon transmissions to achieve paired timestamps.
“Many systems use beacon transmissions to achieve paired timestamps [26,27,30].”
From Comparison between Two Time Synchronization and Data Alignment Methods for Multi-Channel Wearable Biosensor Systems Using BLE Protocol (2023) · cites this paper as [30]
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Wang, H., Li, J., McDonald, B. E., Farrell, T. R., Huang, X., & Clancy, E. A. (2023) · Sensors · doi:10.3390/s23052465 · Cited by 18 · see citing works
- Authors
- Sridhar, S., Misra, P., & Warrior, J.
- Affiliations
- Ramaiah Institute of Technology (IN)
- Indian Institute of Science Bangalore (IN)
- ORCID
- Misra, Prasant
- Venue
- Proceedings of the 14th International Conference on Information Processing in Sensor Networks
- Publisher
- ACM
- Published
- 2015-04-13
- Pages
- 364-365
- OpenAlex
- W2962727291
- Cited by
- 9
- References
- 0
- Citations by year
- 2023: 2 · 2022: 1 · 2021: 1 · 2020: 1 · 2017: 1 · 2016: 2 · 2015: 1
- FWCI
- 0.99
- Type
- conference paper
- Language
- en
- Open access
- closed
- Locations
- ACM/IEEE International Conference on Information Processing in Sensor Networks (IPSN) (publishedVersion)
- Topics
- Physical Sciences › Computer Science › Computer Networks and Communications › Bluetooth and Wireless Communication Technologies
- Physical Sciences › Computer Science › Computer Networks and Communications › Network Time Synchronization Technologies
- Social Sciences › Sociology and Political Science › Multimedia Communication and Technology
- Keywords
- clock synchronization, Bluetooth Low Energy, Internet of Things, broadcast advertising, Android smartphones, distributed systems, sensor data acquisition
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