6.1.3 5GSM sublayer states

24.5013GPPNon-Access-Stratum (NAS) protocol for 5G System (5GS)Release 17Stage 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)