Article Dans Une Revue IEEE Internet of Things Journal Année : 2026

Resource Allocation in Full-Duplex Multi-User RIS-Assisted Wireless-Powered IIoT Networks

Résumé

This paper examines radio resource allocation in a full-duplex (FD) reconfigurable intelligent surface (RIS)-assisted wireless-powered (WP) industrial internet-of-Things (IIoT) communication network. The system model includes an FD access point (FD-AP) that communicates with FD energy harvesting (EH) multi-users (MUs), referred to as an FD-FD RIS-assisted WP-IIoT network. The FD-AP is equipped with two sets of multiple antennas: one set for downlink (DL) energy beamforming and another for uplink (UL) information signal reception. The FD-MUs have one antenna for DL energy signal reception and another for UL information transmission. This paper addresses the UL sum-rate maximization problem for the FD-FD RISassisted WP-IIoT system by jointly optimizing the RIS phase shift and power resources. Additionally, this paper presents two benchmarks as specific cases of the FD-FD RIS-assisted WP-IIoT system model, namely, (i) FD-HD RIS-assisted WP-IIoT network: FD AP and half-duplex (HD) two MUs groups, and (ii) HD-HD RIS-assisted WP-IIoT network: HD AP and HD MUs. The numerical results demonstrate that the FD-FD system outperforms both benchmarks in the low transmit power regime. Also, compared to the baseline non-RIS-assisted WP-IIoT network, the RIS-assisted WP-IIoT network achieved a significant UL sum-rate gain.

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hal-05526404 , version 1 (25-02-2026)

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Reynah Akwafo, Samuel Kwamena Menanor, Derek Kwaku Pobi Asiedu, Samir Saoudi, Ji-Hoon Yun, et al.. Resource Allocation in Full-Duplex Multi-User RIS-Assisted Wireless-Powered IIoT Networks. IEEE Internet of Things Journal, 2026, pp.1-1. ⟨10.1109/JIOT.2026.3667107⟩. ⟨hal-05526404⟩
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