Messages / Popular
Popular Messages
5G NAS - Registration Request
Starts a 5G registration or mobility update by sending UE identity and registration intent to the core.
5G NGAP - Downlink NAS Transport
Downlink NAS Transport is the NGAP message the AMF uses to carry a downlink NAS message toward the UE through the NG-RAN over the N2 interface.
5G NR - RRC Setup
Downlink NR RRC message sent by the gNB to establish SRB1 and move the UE into the connected RRC procedure.
5G NGAP - Uplink NAS Transport
Uplink NAS Transport is the NGAP message the NG-RAN uses to carry a subsequent uplink NAS message from the UE toward the AMF over the N2 interface after the initial access is already established.
5G NR - Initial UE Message
NGAP initiating message used by the NG-RAN to transfer the UE's first uplink NAS message to the AMF.
5G NGAP - Initial Context Setup Request
Initial Context Setup Request is the NGAP message the AMF sends to NG-RAN to establish UE context, security, and initial PDU session resources after successful NAS entry and core-side authentication steps.
LTE Attach Request
Attach Request is the EPS NAS message the UE uses to start the LTE attach procedure and ask the network to create EPS mobility-management context.
5G NGAP - NAS Non Delivery Indication
NAS Non Delivery Indication is the NGAP message the NG-RAN sends to the AMF when a downlink NAS message cannot be delivered to the UE.
LTE RRC Connection Setup
Downlink LTE RRC message sent by the eNodeB to establish SRB1 and move the UE into connected-mode signaling.
LTE RRC SIB1 - System Information Block Type 1
Broadcast LTE RRC message on BCCH and DL-SCH that gives the UE the essential access identity, cell selection, scheduling, and change-detection context needed before it can use the wider SIB set.
5G NGAP - Paging
Paging is the NGAP message the AMF sends to NG-RAN to trigger UE reachability attempts in one or more tracking areas when the UE is not currently on an active UE-associated N2 signaling connection.
5G NGAP - Initial Context Setup Response
Initial Context Setup Response is the NGAP message the NG-RAN sends to AMF to report successful or partial completion of the Initial Context Setup Request, including per-session setup outcomes.
5G NGAP - PDU Session Resource Setup Request
PDU Session Resource Setup Request is the NGAP message the AMF sends to NG-RAN to request Uu and NG-U resources, DRBs, and QoS flow handling for one or more PDU sessions of an already identified UE.
5G NGAP - Reroute NAS Request
Reroute NAS Request is the NGAP message the AMF sends to NG-RAN when the UE's NAS signaling should be rerouted toward a different AMF selection path.
5G NGAP - UE Context Release Command
UE Context Release Command is the NGAP message the AMF sends to NG-RAN to order release of the UE-associated logical NG connection and associated access-side context.
5G XnAP - Handover Request
Handover Request is the XnAP message the source NG-RAN node sends to the target NG-RAN node to request preparation of resources for an incoming handover on the Xn interface.
5G NGAP - Handover Required
Handover Required is the NGAP message the source NG-RAN sends to the AMF to request preparation of resources at the target during AMF-mediated mobility procedures.
5G NGAP - Initial Context Setup Failure
Initial Context Setup Failure is the NGAP message the NG-RAN sends to AMF when the Initial Context Setup Request cannot be completed for the UE context or its requested setup state.
5G NGAP - PDU Session Resource Setup Response
PDU Session Resource Setup Response is the NGAP message the NG-RAN sends to AMF to report which requested PDU session resources were successfully established and which failed.
5G NGAP - UE Context Release Complete
UE Context Release Complete is the NGAP message the NG-RAN sends to AMF to confirm that the targeted UE-associated logical NG connection has been released.
5G NGAP - Handover Request
Handover Request is the NGAP message the AMF sends to the target NG-RAN to request preparation of resources for an incoming UE during handover preparation.
5G NGAP - PDU Session Resource Release Command
PDU Session Resource Release Command is the NGAP message the AMF sends to the NG-RAN to request release of already established PDU session resources for a given UE.
5G NGAP - UE Context Modification Request
UE Context Modification Request is the NGAP message the AMF sends to NG-RAN to partly modify an already established UE context without rebuilding it from scratch.
5G XnAP - Handover Request Acknowledge
Handover Request Acknowledge is the XnAP message the target NG-RAN node sends to the source NG-RAN node to report the prepared resources at the target and confirm that the handover branch is ready to continue.