Joint Downlink/Uplink RF Wake-Up Solution for IoT Over Cellular Networks

Kouzayha, Nour; Dawy, Zaher; Andrews, Jeffrey G.; Elsawy, Hesham

Joint Downlink/Uplink RF Wake-Up Solution for IoT Over Cellular Networks

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Type

Article

Authors

Kouzayha, Nour
Dawy, Zaher
Andrews, Jeffrey G.
Elsawy, Hesham

KAUST Department

Computer, Electrical and Mathematical Sciences and Engineering (CEMSE) Division

Online Publication Date

2017-12-15

Print Publication Date

2018-03

Date

2017-12-15

Abstract

We use stochastic geometry to analyze the performance of an energy-efficient joint downlink/uplink (UL) radio-frequency (RF) wake-up solution for Internet of Things (IoT) devices over cellular networks. When the IoT device has no data to transmit, it turns its main circuitry completely OFF and switches to a deep sleep mode. The transition back to the active mode is only achieved upon receiving enough power at the device's front end. After wake up, the device initiates regular UL communication with its serving base station (BS). The device experiences a successful wake-up event when the total received power includes a wake-up signal transmitted from its serving BS, and the UL signal-to-interference-and-noise ratio (SINR) is above a predefined threshold. On the other hand, the device experiences a false wake-up event when the wake up is due to received power from neighboring BSs excluding the serving BS. We derive lower and upper bounds for the success and false wake-up probabilities in addition to closed-form expression for the UL SINR coverage probability after successful wake up. We present performance results as a function of various key design parameters and highlight the effectiveness and tradeoffs of RF wake up for IoT devices.

Citation

Kouzayha N, Dawy Z, Andrews JG, ElSawy H (2018) Joint Downlink/Uplink RF Wake-Up Solution for IoT Over Cellular Networks. IEEE Transactions on Wireless Communications 17: 1574–1588. Available: http://dx.doi.org/10.1109/TWC.2017.2781696.

Acknowledgements

This work was supported by the National Council for Scientific Research of the Lebanese Republic (CNRS-L) and the American University of Beirut (AUB) through the CNRS-L/AUB Ph.D. Scholarship. The associate editor coordinating the review of this paper and approving it for publication was P. Salvo Rossi.