Spectrumize: Spectrum-efficient Satellite Networks for the Internet of Things

Authors: 

Vaibhav Singh, Tusher Chakraborty, and Suraj Jog, Microsoft Research; Om Chabra and Deepak Vasisht, UIUC; Ranveer Chandra, Microsoft Research

Abstract: 

Low Earth Orbit satellite constellations are gaining traction for providing connectivity to low-power outdoor Internet of Things (IoT) devices. This is made possible by the development of low-cost, low-complexity pico-satellites that can be easily launched, offering global connectivity without the need for Earth-based gateways. In this paper, we report the space-to-Earth communication bottlenecks derived from our experience of deploying an IoT satellite. Specifically, we characterize the challenges posed by the low link budgets, satellite motion, and packet collisions. To address these challenges, we design a new class of technique that use the Doppler shift caused by the satellite's motion as a unique signature for packet detection and decoding, even at low signal-to-noise ratios and in the presence of collisions. We integrate these techniques into our system, called Spectrumize, and evaluate its performance through both simulations and real-world deployments. Our evaluation shows that Spectrumize performs 3x better compared to classic approach in detecting packet with over 80% average accuracy in decoding.

NSDI '24 Open Access Sponsored by
King Abdullah University of Science and Technology (KAUST)

Open Access Media

USENIX is committed to Open Access to the research presented at our events. Papers and proceedings are freely available to everyone once the event begins. Any video, audio, and/or slides that are posted after the event are also free and open to everyone. Support USENIX and our commitment to Open Access.

BibTeX
@inproceedings {295559,
author = {Vaibhav Singh and Tusher Chakraborty and Suraj Jog and Om Chabra and Deepak Vasisht and Ranveer Chandra},
title = {Spectrumize: Spectrum-efficient Satellite Networks for the Internet of Things},
booktitle = {21st USENIX Symposium on Networked Systems Design and Implementation (NSDI 24)},
year = {2024},
isbn = {978-1-939133-39-7},
address = {Santa Clara, CA},
pages = {825--840},
url = {https://www.usenix.org/conference/nsdi24/presentation/singh-vaibhav},
publisher = {USENIX Association},
month = apr
}

Presentation Video