16.8.2.1 General

While time synchronization service is offered by the 5GS, the network timing synchronization status of the gNB may change. The gNB detects timing synchronization degradation or improvement locally and informs the consumer of the information as specified in TS 23.501 [3] as follows:

• TSCTSF may receive information about timing synchronization status from the gNB via the AMF based on node-level reporting configuration or via OAM;
• UE may receive clock quality information from the gNB based on UE-level clock quality reporting control information.