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<p>1000 frames were simulated in MATLAB-based 5G NR link-layer evaluations under 3GPP-compliant conditions to guarantee good statistical reliability. Under realistic propagation conditions, the study concentrated on the following: Downlink shared Channel (DLSCH), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Physical Downlink Shared Channel (PDSCH) and Hybrid Automatic Repeat Request (HARQ). The impacts of multipath delay spread, Doppler shifts, and user mobility were captured using standardized channel models, such as CDL-A to CDL-D and TDL-B100. The study looked at dynamically changing transmission parameters, such as frequency-hopping strategies, subcarrier spacings between 15 and 120 kHz, and modulation schemes ranging from QPSK to 256-QAM. The findings showed that while larger subcarrier spacings (60–120&#xa0;kHz) improved throughput in high-SNR and low-latency scenarios, smaller subcarrier spacings (15–30 kHz) provided better block error rate (BLER) performance in low-SNR and high-delay conditions. Moreover, QPSK proved resilient in noisy settings, whereas 256-QAM reached maximum throughput in favourable SNR conditions. Interestingly, PUCCH with interest frequency hopping had the lowest BLER, demonstrating that it works well in channels that are dominated by fading. The results highlight how important adaptive link-layer configurations are for optimizing spectral efficiency and guaranteeing dependable performance in a range of deployment circumstances. To meet the demanding needs of ultra-reliable low-latency communication (URLLC) and enhanced mobile broadband (eMBB) services in next-generation wireless networks, these insights are essential.</p>

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Optimizing 5G NR link layer parameters for eMBB and URLLC applications under dynamic channel and transmission configurations

  • 期刊论文

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  • 发表日期：

    2026年4月2日

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  • Sulekha Pateriya,
  • Shuvabrata Bandopadhaya,
  • Amit Kumar Bairwa,
  • Vanshika Jain

摘要

1000 frames were simulated in MATLAB-based 5G NR link-layer evaluations under 3GPP-compliant conditions to guarantee good statistical reliability. Under realistic propagation conditions, the study concentrated on the following: Downlink shared Channel (DLSCH), Physical Uplink Shared Channel (PUSCH), Physical Uplink Control Channel (PUCCH), Physical Downlink Shared Channel (PDSCH) and Hybrid Automatic Repeat Request (HARQ). The impacts of multipath delay spread, Doppler shifts, and user mobility were captured using standardized channel models, such as CDL-A to CDL-D and TDL-B100. The study looked at dynamically changing transmission parameters, such as frequency-hopping strategies, subcarrier spacings between 15 and 120 kHz, and modulation schemes ranging from QPSK to 256-QAM. The findings showed that while larger subcarrier spacings (60–120 kHz) improved throughput in high-SNR and low-latency scenarios, smaller subcarrier spacings (15–30 kHz) provided better block error rate (BLER) performance in low-SNR and high-delay conditions. Moreover, QPSK proved resilient in noisy settings, whereas 256-QAM reached maximum throughput in favourable SNR conditions. Interestingly, PUCCH with interest frequency hopping had the lowest BLER, demonstrating that it works well in channels that are dominated by fading. The results highlight how important adaptive link-layer configurations are for optimizing spectral efficiency and guaranteeing dependable performance in a range of deployment circumstances. To meet the demanding needs of ultra-reliable low-latency communication (URLLC) and enhanced mobile broadband (eMBB) services in next-generation wireless networks, these insights are essential.