Age Minimization in Outdoor and Indoor Communications with Relay-aided Dual RIS

Wanting Lyu; Yue Xiu; Yang Zhao; Chadi Assi; Zhongpei Zhang

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arXiv · 2205.02991

Age Minimization in Outdoor and Indoor Communications with Relay-aided Dual RIS

Wanting Lyu·Yue Xiu·Yang Zhao·Chadi Assi·Zhongpei Zhang

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Abstract

In this paper, we investigate an outdoor and indoor wireless communication network with the assistance of a novel relay-aided double-sided reconfigurable intelligent surface (RIS). A scheduling problem is considered at the outdoor access point (AP) to minimize the sum of age of information (AoI). To serve the indoor users and further enhance the wireless link quality, a novel double-sided RIS with relay is utilized. Since the formulated problem is non-convex with highly-coupled variables, a successive convex approximation (SCA) based alternating optimization (AO) algorithm is proposed to solve it in an iterative manner. Finally, simulation results show the effectiveness and significant performance improvement in terms of AoI of the proposed algorithm compared with other benchmarks.

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BibTeX RIS

Wanting Lyu, Yue Xiu, Yang Zhao, Chadi Assi, Zhongpei Zhang. 2022-11-08. Age Minimization in Outdoor and Indoor Communications with Relay-aided Dual RIS. https://arxiv.org/abs/2205.02991

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