Revolutionizing Symbiotic Radio: Exploiting Tradeoffs in Hybrid Active-Passive Communications
Abstract
Symbiotic radio (SR), a novel energy- and spectrum-sharing paradigm of backscatter communications (BC), has been deemed a promising solution for ambient Internet of Things (A-IoT), enabling ultra-low power consumption and massive connectivity. However, A-IoT nodes utilizing BC suffer from low transmission rates, which may limit the applications of SR in A-IoT scenarios with data transmission requirements. To address this issue, in this article, we introduce hybrid active-passive communications (HAPC) into SR by exploiting tradeoffs between transmission rate and power consumption. We first present an overview of novel BC paradigms including ambient BC and SR. Then, a novel HAPC-enabled SR is proposed to enhance the transmission rate of A-IoT nodes. Furthermore, within this paradigm, we investigate the resource allocation scheme and present preliminary research results. Simulation results show that the transmission rate of A-IoT nodes in the proposed HAPC-enabled SR surpasses that in traditional SR. Finally, we discuss open issues related to HAPC-enabled SR.
Keywords
Cite
@article{arxiv.2504.18168,
title = {Revolutionizing Symbiotic Radio: Exploiting Tradeoffs in Hybrid Active-Passive Communications},
author = {Rui Xu and Yinghui Ye and Haijian Sun and Liqin Shi and Guangyue Lu},
journal= {arXiv preprint arXiv:2504.18168},
year = {2025}
}
Comments
This paper has been accepted by IEEE Communications Magazine