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Communication Dans Un Congrès Année : 2022

A Lightweight Joint RIS/BS Configuration Scheme

Résumé

The integration of RIS elements in upcoming 6G networks appears a major breakthrough to extend network coverage and capacity. This paper introduces a new link-layer scheme for RIS-enabled communications building on existing models for the physical layer of RIS technologies. The scheme is able to integrate the selection of precoders/beams in a codebook and scheduling of UEs at once. Furthermore, elements for the integration of the proposed scheme in current 3GPP-5G specifications are addressed. The scheduler combines a slow mechanism operating at the downlink OFDMA frame scale with a standard proportional fair scheduler operating at the OFDMA slot scale and accommodating both LOS and non-LOS UEs. We introduce an optimization framework for the proposed scheduler whose performance is hence simulated in a reference scenario. The spectral efficiency figures in our tests confirm a large gain of the scheme against a baseline direct path scheme. Finally, the scheduler optimization permits to achieve a further improvement of 15-20% for non line-of-sight users.
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Dates et versions

hal-03754824 , version 1 (20-08-2022)

Identifiants

  • HAL Id : hal-03754824 , version 1

Citer

Antoine Dejonghe, Zwi Altman, Francesco de Pellegrini, Eitan Altman. A Lightweight Joint RIS/BS Configuration Scheme. 6GNet 2022 - 1st International conference on 6G Networking, Jul 2022, Paris, France. ⟨hal-03754824⟩
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