SDR-Based 5G NR C-Band I/Q Monitoring and Surveillance in Urban Area Using a Helikite

3 Mar 2023  ·  Sung Joon Maeng, Ozgur Ozdemir, İsmail Güvenç, Mihail L. Sichitiu, Magreth Mushi, Rudra Dutta, Monisha Ghosh ·

In this paper, we report experimental results in collectting and processing 5G NR I/Q samples in the 3.7~GHz C-band by using software-defined radio (SDR)-mounted helikite. We use MATLAB's 5G toolbox to post-process the collected data, to obtain the synchronization signal block (SSB) from the I/Q samples and then go through the cell search, synchronization procedures, and reference signal received power (RSRP) and reference signal received quality (RSRQ) calculation. We plot these performance metrics for various physical cell identities as a function of the helikite's altitude. Furthermore, building on our experience with the collected and post-processed data, we discuss potential vulnerabilities of 5G NR systems to surveillance, jamming attacks, and post quantum era attacks.

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