5G NR与Wi-Fi 6E/7在6 GHz频段的共存：实验干扰测量
Coexistence of 5G NR and Wi Fi 6E/7 at 6 GHz: Experimental Interference Measurements
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中文总结 AI 辅助
本文通过实验测量证实，合规的极低功率Wi-Fi 6E/7设备在6 GHz频段与5G NR共存时，其发射不会对5G接收端造成可测量干扰。
中文摘要 AI 辅助
本文首次开展商用极低功率（VLP）Wi-Fi 6E/7设备对工作在n102频段（6 GHz）、包含5G核心网的实际5G新空口（NR）系统gNB上行链路及UE下行链路接收链的传导干扰测量，采用支持n102频段（40 MHz、30 kHz子载波间隔）、基于OpenAirInterface构建的软件定义无线电（SDR）测试平台。我们扫描注入的Wi-Fi功率，记录gNB上行链路与UE下行链路路径的吞吐量、误块率及信噪比。结果显示，低于-75 dBm时，两个接收端均未出现可测量的性能下降；高于该阈值后，性能逐步退化。UE在低数据速率下更具鲁棒性，且仅信标传输不会对其造成影响。补充的链路预算分析将这些测量阈值映射为等效的VLP到受扰设备的距离，该距离完全落在545–685的先听后说（LBT）排除区内，证实合规的VLP设备会在发射信号可能损害任一接收端前释放信道。
英文摘要
This paper presents the first conducted-interference measurements of a commercial Very Low Power (VLP) Wi-Fi 6E/7 device into both the gNB uplink and UE downlink receiver chains of a live 5G New Radio (NR) system, using a complete O-RAN/SDR stack with 5G core in band~n102 (6\,GHz). We use a Software-Defined Radio (SDR) testbed built on OpenAirInterface with band~n102 support (40 MHz, 30 kHz Subcarrier Spacing). We sweep the injected Wi-Fi power and record throughput, block error rate, and signal-to-noise ratio on both the gNB uplink and UE downlink paths. Neither receiver shows measurable degradation below 75 dBm. Above this threshold, performance degrades progressively. The UE is more resilient at lower data rates and unaffected by beacon-only transmissions. A complementary link-budget analysis maps these measured thresholds to equivalent VLP-to-victim distances. These distances fall well inside the 545--685 Listen Before Talk (LBT) exclusion zone, confirming that a compliant VLP device would vacate the channel before its emissions could harm either receiver.
