RIS-aided Real-time Beam Tracking for a Mobile User via Bayesian Optimization

The conventional beam management procedure mandates that the user equipment (UE) periodically measure the received signal reference power (RSRP) and transmit these measurements to the base station (BS). The challenge lies in balancing the number of beams used: it should be large enough to identify h...

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Bibliographic Details
Published in:arXiv.org 2023-10
Main Authors: Liu, Junshuo, Xiong, Rujing, Lu, Jialong, Tiebin Mi, Qiu, Robert C
Format: Article
Language:English
Subjects:
Bayesian analysis
Communications systems
Optimization
Real time
System effectiveness
Tracking
Online Access:Get full text
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Summary:The conventional beam management procedure mandates that the user equipment (UE) periodically measure the received signal reference power (RSRP) and transmit these measurements to the base station (BS). The challenge lies in balancing the number of beams used: it should be large enough to identify high-RSRP beams but small enough to minimize reporting overhead. This paper investigates this essential performance-versus-overhead trade-off using Bayesian optimization. The proposed approach represents the first application of real-time beam tracking via Bayesian optimization in RIS-assisted communication systems. Simulation results validate the effectiveness of this scheme.
ISSN:2331-8422