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About this paper
Marco Giordani, Michele Polese, Arnab Roy, Douglas Castor, Michele Zorzi
A tutorial synthesizes existing knowledge and provides practical guidelines for 3GPP NR beam management at millimeter wave frequencies, analyzing the trade-offs among detection accuracy, reactiveness (e.g., initial access time, RLF recovery), and overhead under various system configurations. The work, combining academic (University of Padova) and industry (InterDigital) perspectives, informs optimal design choices for mmWave 5G deployments.
Key insights
- Achieving optimal beam management involves complex trade-offs between detection accuracy, reactiveness (latency for initial access and tracking), and overhead, with the ideal strategy being highly context-dependent.
- Hybrid or digital beamforming at the receiver is critical for reducing initial access latency to practical levels.
- Non-Standalone (NSA) architectures significantly improve Radio Link Failure recovery reactiveness by leveraging the robust LTE control plane.
Summary by alphaXiv.
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