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blobel2021low-power

Johannes Blobel, Vu H. Tran, Archan Misra and Falko Dressler, "Low-Power Downlink for the Internet of Things using IEEE 802.11-compliant Wake-Up Receivers," Proceedings of 40th IEEE International Conference on Computer Communications (INFOCOM 2021), Virtual Conference, May 2021.

Abstract

Ultra-low power communication is critical for supporting the next generation of battery-operated or energy harvesting battery-less Internet of Things (IoT) devices. Duty cycling protocols and wake-up receiver (WuRx) technologies, and their combinations, have been investigated as energy-efficient mechanisms to support selective, event-driven activation of devices. In this paper, we go one step further and show how WuRx can be used for an efficient and multi-purpose low power downlink (LPD) communication channel. We demonstrate how to (a) extend the wake-up signal to support low-power flexible and extensible unicast, multicast, and broadcast downlink communication and (b) utilize the WuRx-based LPD to also improve the energy efficiency of uplink data transfer. In addition, we show how the non-negligible energy overhead of conventional microcontroller based decoding of LPD communication can be substantially reduced by using the low-power universal asynchronous receiver/transmitter (LPUART) module of modern microcontrollers. Via experimental studies, involving both a functioning prototype and larger-scale simulations, we show that our proposed approach is compatible with conventional WLAN and offers a two-orders-of-magnitude improvement in uplink throughput and energy overheads over a competitive, IEEE 802.11 PSM-based baseline. This new LPD capability can also be used to improve the RF-based energy harvesting efficiency of battery-less IoT devices.

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Johannes Blobel
Vu H. Tran
Archan Misra
Falko Dressler

BibTeX reference

@inproceedings{blobel2021low-power,
    author = {Blobel, Johannes and Tran, Vu H. and Misra, Archan and Dressler, Falko},
    doi = {10.1109/INFOCOM42981.2021.9488838},
    title = {{Low-Power Downlink for the Internet of Things using IEEE 802.11-compliant Wake-Up Receivers}},
    publisher = {IEEE},
    address = {Virtual Conference},
    booktitle = {40th IEEE International Conference on Computer Communications (INFOCOM 2021)},
    month = {5},
    year = {2021},
   }
   
   

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