LoRa networking research is organized into a taxonomy of energy, range, multiple access, error correction, and security challenges, with current solutions and open issues summarized from the cited literature.
NetScatter: Enabling Large-Scale Backscatter Networks
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abstract
We present the first wireless protocol that scales to hundreds of concurrent transmissions from backscatter devices. Our key innovation is a distributed coding mechanism that works below the noise floor, operates on backscatter devices and can decode all the concurrent transmissions at the receiver using a single FFT operation. Our design addresses practical issues such as timing and frequency synchronization as well as the near-far problem. We deploy our design using a testbed of backscatter hardware and show that our protocol scales to concurrent transmissions from 256 devices using a bandwidth of only 500 kHz. Our results show throughput and latency improvements of 14--62x and 15--67x over existing approaches and 1--2 orders of magnitude higher transmission concurrency.
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A Survey on LoRa Networking: Research Problems, Current Solutions and Open Issues
LoRa networking research is organized into a taxonomy of energy, range, multiple access, error correction, and security challenges, with current solutions and open issues summarized from the cited literature.