Whisper: IoT in the TV White Space Spectrum
Talkat 19th USENIX Symposium on Networked Systems Design and Implementation (NSDI '22) · 2022-04-04..04-06·
summary
A complete IoT stack is built: a custom 150–960 MHz radio that avoids adjacent-channel leakage, a gateway with multiple base-station radios, and an FDMA-style scheduled MAC with slot and channel-allocation algorithms plus gateway-side spectrum sensing. Field deployment on an 8,500‑acre farm runs for 2.5 months with 20 devices and a single gateway, showing ~5× range over LoRa, ~2× lower energy at >1 mile, dynamic channel switching under interference, and, in simulation, three TV channels yield ~5× traffic and 8× better capacity than mainstream ISM-band protocols.
AI-written summary · about
chapters (16)
- 0:00Intro
- 0:58Experience with mainstream lot solutions
- 2:55How to bridge the gap?
- 3:19Why TVWS?
- 4:10Challenges with TVWS
- 5:17Whisper and our contributions
- 7:21Whisper MAC protocol: FTDMA core
- 8:34Whisper MAC protocol: Slot allocation process
- 10:26Dynamic spectrum access: Challenges
- 10:58Dynamic spectrum access: Spectrum awareness
- 11:42Dynamic spectrum access: Spectrum exploitation
- 12:17Evaluation in real-world: Setup
- 12:56Evaluation in real-world: Results
- 13:44Simulation: Setup
- 14:36Simulation: Results
- 14:57Summary
related talks
49mLet's See What's Out There - Mapping the Wireless IOT
25mUpdate on 2.4Ghz LoRaWAN
32mA diversity of IoT standards to service a fragmented market
14mCall of wild: extending terrestrial IoT networks
24mBridging Technologies: Multi-Connectivity in IoT
14mWi-Fi®: revolutionizing the IoT ecosystem
33mThe IoT for Real - Beyond Simplistic Thinking and Models
13mSlimWiFi: Ultra-Low-Power IoT Radio Architecture Enabled by Asymmetric Communication