Quantifying the Trade-off between latency and power consumption in Bluetooth Low Energy and its mitigation by Using a Wake-Up Receiver

Maryam Dodangeh*, Mark Stefan Oude Alink, Bram Nauta

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Bluetooth Low Energy (BLE) is one of the primary wireless communication protocols for Internet of Things (IoT) devices due to its inherently low energy consumption. BLE’s duty-cycled scheme reduces energy consumption, but at the cost of latency. Wake-Up Receivers (WuRXs) have been proposed to mitigate this trade-off, but most attention seems to have been paid to the circuit design rather than assessing exactly how beneficial a WuRX could be. In this paper, we analyze the power consumption and latency impact of a 200μW WuRX added to a state-of-the-art commercial BLE transceiver for relevant IoT scenarios. The results show that the latency/power trade-off can be significantly relaxed for both peripheral and central devices in initiating a connection. Furthermore, if the role of central and peripherals can be changed (peripherals scan instead of advertise), the power consumption of the most energy-constrained devices can be further reduced in scenarios that require less than 200ms latency to initiate a connection. Also, for a maximum latency of 4s, a duty-cycled WuRX enables equal 60μW average power consumption for both the central and peripheral devices. This is extremely useful when both ends of the link face similar battery constraints, as would be the case in many IoT scenarios.
Original languageEnglish
Title of host publicationIEEE 8th World Forum on Internet of Things (WF-IoT)
Place of PublicationYokohama, Japan
ISBN (Electronic)9781665491532
Publication statusPublished - 2 Nov 2022
Event8th World Forum on Internet of Things 2022 - Yokohama, Japan
Duration: 26 Oct 202211 Nov 2022
Conference number: 8


Conference8th World Forum on Internet of Things 2022


  • Bluetooth low energy
  • Internet of Things
  • Latency
  • Power consumption
  • Ultra low power
  • Wake-Up Receiver (WuRX)
  • Wireless Sensor Network (WSN)


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