E1AP Messages
E1AP carries signaling between the CU-CP and CU-UP in split user plane architectures.
This category is reserved for control and user plane coordination references in 5G core-aware deployments.
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5G E1AP - Bearer Context Modification Confirm
Bearer Context Modification Confirm is the E1AP message the gNB-CU-CP sends after Bearer Context Modification Required to confirm the control-plane action that the gNB-CU-UP requested for an active bearer context.
5G E1AP - Bearer Context Modification Failure
Bearer Context Modification Failure is the E1AP unsuccessful outcome the gNB-CU-UP returns when it cannot accept the requested bearer-context changes for an existing UE.
5G E1AP - Bearer Context Modification Request
Bearer Context Modification Request is the E1AP message the gNB-CU-CP sends to the gNB-CU-UP to change an existing bearer context, including DRB, QoS, forwarding, and transport-related user-plane updates.
5G E1AP - Bearer Context Modification Required
Bearer Context Modification Required is the E1AP message the gNB-CU-UP sends to the gNB-CU-CP when the CU-UP requires the control plane to take bearer-context modification action for an existing UE.
5G E1AP - Bearer Context Modification Response
Bearer Context Modification Response is the E1AP successful outcome the gNB-CU-UP returns after accepting bearer-context changes for an existing UE.
5G E1AP - Bearer Context Release Command
Bearer Context Release Command is the E1AP message the gNB-CU-CP sends to the gNB-CU-UP to release the existing bearer context for one UE when the user-plane branch is no longer needed or must be cleaned up.
5G E1AP - Bearer Context Release Complete
Bearer Context Release Complete is the E1AP successful outcome the gNB-CU-UP returns after bearer-context teardown has finished for the targeted UE branch.
5G E1AP - Bearer Context Release Request
Bearer Context Release Request is the E1AP message the gNB-CU-UP sends to the gNB-CU-CP when the CU-UP needs the control plane to handle release of an existing bearer context.
5G E1AP - Bearer Context Setup Failure
Bearer Context Setup Failure is the E1AP unsuccessful outcome the gNB-CU-UP returns when it cannot accept the requested bearer-context creation for a UE.
5G E1AP - Bearer Context Setup Request
Bearer Context Setup Request is the E1AP message the gNB-CU-CP sends to the gNB-CU-UP to create the user-plane bearer context, including PDU session, DRB, QoS, and NG-U transport instructions for one UE.
5G E1AP - Bearer Context Setup Response
Bearer Context Setup Response is the E1AP successful outcome the gNB-CU-UP returns after accepting bearer creation, confirming the CU-UP side UE identity and reporting the resulting bearer and user-plane state.