Bootstrapping Battery-free Wireless Networks: Efficient Neighbor Discovery and
summary
Presents Find, a neighbor-discovery protocol that inserts geometric waiting (randomized wake delays) to break persistent wake-up offsets, and Flync, a hardware/software sync that extracts a powerline lamp flicker clock from solar-panel current to align wake times. Open-source prototypes (three small solar panels, 47 µF cap) include a clock-extraction circuit consuming <5 µW. Six-node experiments (15 bi‑directional links) show median discovery 4.3× faster and 99th‑percentile 34.4× faster than greedy; contact-tracing trials record contacts in 2.67 s outdoors and 7.5 s indoors.
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chapters (12)
- 0:00Intro
- 0:30Going Battery-free
- 1:00Intermittent Operation
- 1:33Intermittent Computing
- 1:57Battery-free Networks
- 2:20Interleaving
- 2:59Our Contribution
- 3:34FIND
- 6:03Flicker
- 6:28FLYNC Circuit
- 7:42Neighbor Discovery Performance
- 8:47Case Study: Contact Tracing
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