Question: In a RAN Sharing scenario with multiple cell-ID broadcast, how does a gNB-DU identify identical content for MBS sessions when sharing physical cell resources with other gNB-DUs?
Option 1: Based on Associated Session ID and, for location-dependent services, the MBS Service Area.
Option 2: Solely based on the QoS requirements received from the participating 5GCs.
Option 3: Using a unique Cell-ID broadcast by each gNB-DU.
Option 4: Through direct signaling with all involved gNB-CUs.
Explanation: In RAN Sharing scenarios, especially when multiple cell-IDs are broadcast (indicating shared resources among different gNB-DUs), efficiently managing and identifying common content for Multimedia Broadcast Multicast Services (MBS) is crucial. The correct identification method involves utilizing both the Associated Session ID (for session uniqueness) and, specifically for services dependent on location, considering the MBS Service Area (to ensure geographical relevance). This approach ensures that identical content is accurately identified and efficiently broadcast across shared resources without confusion or duplication of efforts among participating gNB-DUs.