Beam Misalignment in 3GPP mmWave NR
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arXiv
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| Hauptverfasser: | , , , , |
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| Format: | Preprint |
| Veröffentlicht: |
2025
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| _version_ | 1866908320994951168 |
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| author | Busquets, Noe Bernadas i Gelabert, Xavier Klaiqi, Bleron Sung, Ki Won Slimane, Slimane Ben |
| author_facet | Busquets, Noe Bernadas i Gelabert, Xavier Klaiqi, Bleron Sung, Ki Won Slimane, Slimane Ben |
| contents | This paper presents an analytical framework for evaluating beam misalignment in 3GPP mmWave NR systems implementing analog beamforming. Our approach captures the interaction between user mobility, beam sweeping mechanisms, and deployment configurations, focusing on long-term average performance metrics. Specifically, we model the beam misalignment rates at both the base station (BS) and user equipment (UE) as Poisson processes and derive expressions for the expected misalignment duration, misalignment fraction, and overall beamforming gain. The framework accounts for practical constraints in NR such as Synchronization Signal Blocks (SSB) periodicity, TDD frame structures, and SSB overhead. Through numerical evaluation based on 3GPP mmWave parameters, we identify key trade-offs between beam counts, user mobility, and SSB timing, providing actionable design insights for robust and efficient beam management in future high-frequency networks. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2504_11565 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Beam Misalignment in 3GPP mmWave NR Busquets, Noe Bernadas i Gelabert, Xavier Klaiqi, Bleron Sung, Ki Won Slimane, Slimane Ben Networking and Internet Architecture Signal Processing This paper presents an analytical framework for evaluating beam misalignment in 3GPP mmWave NR systems implementing analog beamforming. Our approach captures the interaction between user mobility, beam sweeping mechanisms, and deployment configurations, focusing on long-term average performance metrics. Specifically, we model the beam misalignment rates at both the base station (BS) and user equipment (UE) as Poisson processes and derive expressions for the expected misalignment duration, misalignment fraction, and overall beamforming gain. The framework accounts for practical constraints in NR such as Synchronization Signal Blocks (SSB) periodicity, TDD frame structures, and SSB overhead. Through numerical evaluation based on 3GPP mmWave parameters, we identify key trade-offs between beam counts, user mobility, and SSB timing, providing actionable design insights for robust and efficient beam management in future high-frequency networks. |
| title | Beam Misalignment in 3GPP mmWave NR |
| topic | Networking and Internet Architecture Signal Processing |
| url | https://arxiv.org/abs/2504.11565 |