TANG Jie,FAN Junyuan,ZHANG Yanbo,et al.Integrated communication, sensing and energy transfer for dynamic internet of things[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2025,64(04):22-30.
TANG Jie,FAN Junyuan,ZHANG Yanbo,et al.Integrated communication, sensing and energy transfer for dynamic internet of things[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2025,64(04):22-30. DOI: 10.13471/j.cnki.acta.snus.ZR20250020.
Integrated communication, sensing and energy transfer for dynamic internet of things
This paper proposes a system design for integrated sensing, communication, and power transfer(ISCPT) which jointly addresses communication requirements, mobile energy device (MED) tracking, and energy replenishment. The proposed system enables a base station to simultaneously perform three functions: data communication, wireless power transfer, and sensing-based tracking. Specifically, the base station leverages downlink signals for simultaneous wireless power transfer, and efficient data communication, while employing their echoes to localize the MED. An iterative target tracking algorithm is developed, where the real-time posterior tracking error serves as a metric for sensing accuracy. An optimization problem is formulated to maximize real-time energy replenishment efficiency, subject to constraints on communication signal-to-noise ratio(SNR) and sensing error. The joint beamforming problem for communication, sensing, and power transfer, initially formulated as a non-convex optimization problem, is transformed into a convex one via semidefinite relaxation and the introduction of auxiliary variables. Simulation results demonstrate that the proposed algorithm significantly improves the system’s energy harvesting efficiency by jointly optimizing communication and power transfer beamforming. Furthermore, the sensing information is effectively leveraged to optimize both power transfer and communication links, thereby achieving the integrated fusion of communication, sensing, and energy replenishment.
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