15.5.6.2 Distributed PCI Assignment

For distributed PCI assignment in gNB, the OAM assigns a list of PCIs for each NR cell in the gNB, and the gNB selects a PCI value from the list of PCIs. The gNB may restrict this list by removing some PCIs that are reported by UEs, reported over the Xn interface by neighbouring gNBs, and/or acquired through other methods, e.g. detected over the air using a downlink receiver.