Question: In a split gNB architecture, how does a gNB-DU inform the gNB-CU about detected Cross-Link Interference related to its serving cells' TDD DL/UL patterns?
Option 1: The gNB-DU periodically broadcasts its TDD DL/UL patterns to all neighboring nodes, which then notify the gNB-CU if interference is detected.
Option 2: Neighboring gNB-DUs directly inform each other of their TDD DL/UL patterns, and one of them alerts the gNB-CU if Cross-Link Interference is identified.
Option 3: The gNB-DU reports the TDD DL/UL patterns of its serving cells to the gNB-CU only when Cross-Link Interference is detected.
Option 4: The gNB-CU autonomously detects Cross-Link Interference for all serving cells of connected gNB-DUs without requiring explicit reporting.
Explanation: In a split gNB architecture, the gNB-DU, being closer to the radio interface, detects interference on its serving cells and logically reports this condition to the gNB-CU for coordinated mitigation strategies when an issue arises, ensuring efficient resource use.