Abstract
In this paper, we introduce the new concept of Crowd-Detectable Zero-Energy-Devices. Such devices harvest solar or ambient light energy to power themselves, backscatter ambient waves to communicate, and are detected simultaneously by a smartphone connected to the network, and the network itself, as long as the device is close to the considered smartphone. Such device is a promising sustainable solution for the future of the Internet of Things. We describe an example of use case: asset tracking with zero added energy, zero new signals and zero new infrastructure in the network, thanks to the anonymous and transparent participation of smartphones connected to the wireless network. We then present our first prototypes of such devices that backscatter TV, 4G and 5G signals, and show our first experiments in challenging conditions and environments.
Highlights
Each generation of mobile network, from the 2nd generation (2G) to the 5th generation (5G) has been improved in terms of spectral and energy efficiencies
In [3], such a system has been identified as a promising solution for Internet of Things (IoT) applications
In [4], real-time ambient backscatter communications have been demonstrated with a first tag prototype backscattering TV, 4th generation (4G) network waves and harvesting solar energy to power itself
Summary
Each generation of mobile network, from the 2nd generation (2G) to the 5th generation (5G) has been improved in terms of spectral and energy efficiencies. Ambient backscatter communications have been proposed [2]. In such communication systems, a tag sends a message to a reader without generating any radio-frequency (RF) wave. A tag sends a message to a reader without generating any radio-frequency (RF) wave It backscatters ambient waves generated by an external source such as a television (TV) tower. In [4], real-time ambient backscatter communications have been demonstrated with a first tag prototype backscattering TV, 4th generation (4G) network waves and harvesting solar energy to power itself.
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