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2016
Springer

Predictable MAC-level Performance in Low-power Wireless under Interference

4 years 3 months ago
Predictable MAC-level Performance in Low-power Wireless under Interference
Predictable performance is key for many WSN applications. Recent efforts use models of the environment, the employed hardware, and protocols to predict network performance. Towards this end, we present an intentionally simple model of ContikiMAC, Contiki’s default MAC layer, targeting worst-case bounds for packet delivery rate and latency. Our experiments reveal problems in the performance of ContikiMAC, which make the protocol perform much worse than predicted, and hence prohibit predictable performance with the current ContikiMAC implementation. We show that the reason for this performance degradation is that ContikiMAC loses phase-lock. To solve this problem, we add fine-grained timing information into the acknowledgment packets. We show that this mechanism solves these problems and enables predictable performance with ContikiMAC even under high external interference.
Mathieu Michel, Thiemo Voigt, Luca Mottola, Nicola
Added 03 Apr 2016
Updated 03 Apr 2016
Type Journal
Year 2016
Where EWSN
Authors Mathieu Michel, Thiemo Voigt, Luca Mottola, Nicolas Tsiftes, Bruno Quoitin
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