NR-Surface: NextG-ready µW-reconfigurable mmWave Metasurface
Talkat 21st USENIX Symposium on Networked Systems Design and Implementation (NSDI '24) · 2024-04-16..04-18·
summary
Claims a fully NR-compliant, real-time reconfigurable mmWave metasurface that runs at ~242.7 µW end-to-end and lasts ~2.1 years on one AA battery, using a 15 kHz NarrowBand Packet Unit (NBPU) receiver with equivalent-time sampling to meet <260 ns symbol sync; hardware holds beams at 72 nW and reports stepwise power use (17 µW, 6.4 µW) for key operations; prototypes on srsRAN show around-the-corner gains of 20.3–22.2 dB and continuous 20 ms reconfiguration.
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chapters (13)
- 0:00NR-Surface project intro
- 1:19Practical metasurface challenges
- 2:23Real-time reconfig demo
- 3:48NR beam management steps
- 5:11Low-duty cycling for power
- 6:16Base station sync
- 7:21Narrow-band packet unit
- 10:21MPU symbol design
- 11:02Equivalent-time sampling
- 12:32Power consumption metrics
- 12:53Performance under mobility
- 13:37Dynamic blockage handling
- 15:03Conclusion and future
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