Random Access Channel (RACH) jamming poses a critical security threat to 5G and beyond (B5G) networks. This paper presents an analytical model for predicting the impact of Msg1 jamming attacks on RACH performance. We use the OpenAirInterface (OAI) open-source user equipment (UE) to implement a Msg1 jamming attacker. Over-the-air experiments validate the accuracy of the proposed analytical model. The results show that low-power and stealthy Msg1 jamming can effectively block legitimate UE access in 5G/B5G systems.

翻译：随机接入信道干扰对5G及超5G网络构成严重安全威胁。本文提出了一种分析模型，用于预测Msg1干扰攻击对RACH性能的影响。我们采用OpenAirInterface开源用户设备实现Msg1干扰攻击器，并通过空中实验验证了所提分析模型的准确性。实验结果表明，低功率隐蔽型Msg1干扰能有效阻断5G/B5G系统中合法用户设备的接入。