6.1.3 5GSM sublayer states
24.5013GPPNon-Access-Stratum (NAS) protocol for 5G System (5GS)Release 18Stage 3TS
6.1.3.1 General
In the following subclauses, the possible states of a PDU session in the UE and the network side are described.
6.1.3.2 5GSM sublayer states in the UE
6.1.3.2.1 Overview
In the following subclauses, the possible 5GSM sublayer states of the UE are described and shown in figure 6.1.3.2.1.1.
NOTE 1: Not all possible transitions are shown in this figure.
NOTE 2: Some transitions shown in this figure are not applicable to the MA PDU session.
Figure 6.1.3.2.1.1: The 5GSM sublayer states for PDU session handling in the UE (overview)
6.1.3.2.2 PDU SESSION INACTIVE
No PDU session exists.
6.1.3.2.3 PDU SESSION ACTIVE PENDING
The UE has initiated a PDU session establishment procedure towards the network and is waiting for a response from the network.
6.1.3.2.4 PDU SESSION ACTIVE
The PDU session is active in the UE.
6.1.3.2.5 PDU SESSION INACTIVE PENDING
The UE has initiated a PDU session release procedure towards the network and is waiting for a response from the network.
6.1.3.2.6 PDU SESSION MODIFICATION PENDING
The UE has initiated a PDU session modification procedure towards the network and is waiting for a response from the network.
6.1.3.2.7 PROCEDURE TRANSACTION INACTIVE
No procedure transaction exists.
6.1.3.2.8 PROCEDURE TRANSACTION PENDING
The UE has initiated a procedure transaction towards the network.
Figure 6.1.3.2.8.1: The procedure transaction states in the UE (overview)
6.1.3.3 5GSM sublayer states in the network side
6.1.3.3.1 Overview
In the following subclauses, the possible 5GSM sublayer states of the network are described and shown in Figure 6.1.3.3.1.1.
NOTE 1: Not all possible transitions are shown in this figure.
NOTE 2: Some transitions shown in this figure are not applicable to the MA PDU session.
Figure 6.1.3.3.1.1: The 5GSM sublayer states for PDU session handling in the network (overview)
6.1.3.3.2 PDU SESSION INACTIVE
No PDU session exists.
6.1.3.3.3 PDU SESSION ACTIVE
The PDU session is active in the network.
6.1.3.3.4 PDU SESSION INACTIVE PENDING
The network has initiated a PDU session release procedure towards the UE and is waiting for a response from the UE.
6.1.3.3.5 PDU SESSION MODIFICATION PENDING
The network has initiated a PDU session modification procedure towards the UE and is waiting for a response from the UE.
6.1.3.3.6 PROCEDURE TRANSACTION INACTIVE
No procedure transaction exists.
6.1.3.3.7 PROCEDURE TRANSACTION PENDING
The network has initiated a procedure transaction towards the UE.
Figure 6.1.3.3.7.1: The procedure transaction states in the network (overview)