This is a new post in my series about the 5G NR RAN. As in previous posts, I am analyzing a short recording of the downlink of an srsRAN gNB. There are no UEs connected to the cell during this recording, so there isn’t much interesting traffic, but the recording contains all the essential 5G signalling. In particular, there is a SIB1 transmission in the PDSCH, with its corresponding transmission in the PDCCH.
