Clock drift reduction for relative time slot TDMA-based sensor networks

Tjoa, R.; Chee, Kirn Loon; Sivaprasad, P. K.; Rao, Shilpa; Lim, Jae-Deok

doi:10.1109/pimrc.2004.1373857

Cited by 26 publications

(16 citation statements)

References 5 publications

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“…TDMA-based solutions are very efficient in cases of high and constant loads. Low but still constant load may also be handled efficiently by compensating clock drift as in [9]. Solutions have been designed to manage efficiently variable loads at the expense of higher complexity [10].…”

Section: B Protocols For Wireless Sensor Networkmentioning

confidence: 99%

Aircraft Strain WSN Powered by Heat Storage Harvesting

Allmen

Bailleul²,

Becker

et al. 2017

IEEE Trans. Ind. Electron.

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Abstract-The combination of ultra-low power wireless communications and energy harvesting enables the realization of autonomous Wireless Sensor Networks. Such networks can be usefully applied in commercial aircraft where wireless sensing solutions contribute to weight reduction and increased ease of installation and maintenance. This paper presents, for the first time, a complete energy autonomous wireless strain monitoring system for aircraft. The system is based on a multi-mode wireless TDMA MAC protocol that supports automatic configuration and a time-stamping accuracy better than 1 ms. The energy supply depends solely on an innovative thermoelectric energy harvester which takes advantage of the changes in environmental temperature during take-off and landing. The system was successfully integrated and passed the functional and flight-clearance tests that qualify it for use in a flight-test installation.

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Section: B Protocols For Wireless Sensor Networkmentioning

confidence: 99%

Aircraft Strain WSN Powered by Heat Storage Harvesting

Allmen

Bailleul²,

Becker

et al. 2017

IEEE Trans. Ind. Electron.

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“…Assegei [2008] investigates several methods for adjusting the TDMA frame. A median [Tjoa et al 2004] algorithm, a least-square method, and a method using a discrete Kalman filter [Welch and Bishop 1995] are studied.…”

Section: The Base Tdma Mac Mechanismmentioning

confidence: 99%

“…The TDMA frame length is set to one second (T f rame = 1s). MyriaNed nodes use the decentralized frame synchronization mechanism explained in Section 3.4, using the median [Tjoa et al 2004] algorithm for adjusting the TDMA frames among neighboring nodes.…”

Section: Real-world Experimentsmentioning

confidence: 99%

Efficient Cluster Mobility Support for TDMA-Based MAC Protocols in Wireless Sensor Networks

Nabi

Geilen

Basten

et al. 2014

ACM Trans. Sen. Netw.

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Node mobility is a key feature of using Wireless Sensor Networks (WSNs) in many sensory applications, such as healthcare. The Medium Access Control (MAC) protocol should properly support the mobility in the network. In particular, mobility is complicated for contention-free protocols like Time Division Multiple Access (TDMA). An efficient access to the shared medium is scheduled based on the node's local neighborhood. This neighborhood may vary over time due to node movement or other dynamics. In scenarios including bodyarea networking, for instance, some clusters of nodes move together, creating further challenges but also opportunities. This article presents a MAC protocol, MCMAC, that provides efficient support for cluster mobility in TDMA-based MAC protocols in WSNs. The proposed protocol exploits a hybrid contentionfree and contention-based communication approach to support cluster mobility. This relieves the protocol from rescheduling demand due to frequent node movements. Moreover, we propose a listening scheduling mechanism to avoid idle listening to mobile nodes that leads to a considerable energy saving for sensor nodes. The protocol is validated by performing several experiments in a real-world large-scale deployment including several mobile clusters. The protocol is also evaluated by extensive simulation of networks with various scales and configurations.

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“…Superframes are repeated continuously. For successful and efficient TDMA communications, synchronization of clocks between devices in the network is critical [8]. Consequently, tolerances on time keeping and time synchronization mechanisms are specified to ensure network-wide device clock synchronization.…”

Section: A Mac Protocol Descriptionmentioning

confidence: 99%