Section: 8.120 Monitoring Event Information
Content: The Monitoring Event Information contains the monitoring event parameters that are necessary to transfer over the S3/S16/S10 interface. The Monitoring Event Information is coded as depicted in Figure 8.120-1. Figure 8.120-1: Monitoring Event Information The SCEF Reference ID, the SCEF ID, SCEF Reference ID Ext shall be encoded as specified in clause 8.4.4, 8.4.5 and 8.4.82 of 3GPP TS 29.336[ Home Subscriber Server (HSS) diameter interfaces for interworking with packet data networks and applications ]  [69]. The SCEF ID Length indicates the length of the SCEF ID in octets. When the SRIE (SCEF Reference Id Extension) is set to "1", the 64-bit SCEF Reference ID Ext field shall be present to contain the 64-bit SCEF Reference ID Ext for the event. In this case, the receiver shall ignore the SCEF Reference ID received in octets 5 to 8. NOTE 1: The sender can set any value for SCEF Reference ID if the SCEF Reference ID Ext field is included. The source MME/SGSN shall set the NSUR (Notify SCEF when UE becomes Reachable) flag to "1" to indicate that the target MME/SGSN shall send a notification to SCEF when the UE becomes reachable, if a monitoring event, with the Monitoring-Type is set to "AVAILABILITY_AFTER_DDN_FAILURE", or "UE_REACHABILITY_AND_IDLE_STATUS_INDICATION" or "AVAILABILITY_AFTER_DDN_FAILURE_AND_IDLE_STATUS_INDICATION" or "UE_REACHABILITY". The source MME/SGSN shall set the NSUI (Notify SCEF when UE becomes Idle) flag to "1" to indicate that the target MME/SGSN shall send a notification to SCEF when the UE gets into idle mode, if a monitoring event, with the Monitoring-Type is set to "UE_REACHABILITY_AND_IDLE_STATUS_INDICATION" or "AVAILABILITY_AFTER_DDN_FAILURE_AND_IDLE_STATUS_INDICATION". The source MME/SGSN shall set the NSCF (Notify SCEF about Communication Failure events) flag to "1" to indicate that the target MME/SGSN shall send a notification to the SCEF if it detects a communication failure event. NOTE 2: This enables the target MME/SGSN to notify the SCEF about communication failure events that can happen with the target RAN (e.g. radio link failure during the handover execution) before the target MME/SGSN interacts with the HSS. The Remaining Number of Reports indicates the number of reports which are outstanding to be sent to the SCEF. It shall be encoded as specified in clause 8.4.8 of 3GPP TS 29.336[ Home Subscriber Server (HSS) diameter interfaces for interworking with packet data networks and applications ]  [69].