BLITZ: Low Latency and Energy-Efficient Communication for Event-Triggered Wireless Sensing Systems
Event-triggered wireless sensing systems are an important class of wireless sensor network, where the detection of non-deterministic events enables the monitoring and control of processes in industries such as manufacturing, healthcare, and agriculture. The system properties of low latency, energy e...
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Veröffentlicht in: | ACM transactions on sensor networks 2019-05, Vol.15 (2), p.1-38 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | Event-triggered wireless sensing systems are an important class of wireless sensor network, where the detection of non-deterministic events enables the monitoring and control of processes in industries such as manufacturing, healthcare, and agriculture. The system properties of low latency, energy efficiency, and adaptability make event-triggered wireless sensing systems a key technological enabler for the Industrial Internet of Things.
Wireless sensing systems based on periodic multi-hop communication exhibit a fundamental trade-off between latency and energy efficiency, which is unfavorable for event-triggered application scenarios. To address this technological gap, we present B
litz
, the first communication architecture that combines asynchronous and synchronous flooding primitives to facilitate low latency and energy-efficient multi-hop communication of non-deterministic events. B
litz
also incorporates a novel scheme for mitigating erroneous wake-ups, which is shown analytically and experimentally to further reduce energy consumption. We present a prototype implementation of B
litz
and evaluate its performance in an indoor testbed deployment. Experiments show that BLITZ supports a mean latency as low as 108.9ms for an 8-bit event packet and its associated data packet of 32 bytes through a 4-hop network, and a power dissipation of 16μW during periods of inactivity. |
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ISSN: | 1550-4859 1550-4867 |
DOI: | 10.1145/3309702 |