10.1.00 General remark about 5GS PDU sessions and EPS PDN connections

27.0073GPPAT command set for User Equipment (UE)Release 18TS

According to 3GPP TS 23.501 [165] and 3GPP TS 24.501 [161] there exists a one to one mapping between a 5GS PDU session and an EPS PDN connection. A 5GS PDU session is a set of QoS flows consisting of one QoS flow of the default QoS rule and optionally one or more QoS flows of non-default QoS rule. A PDN connection is set of EPS bearer contexts and consists of at least one default EPS bearer context and optionally one or more dedicated EPS bearer contexts. A PDU session can be mapped to one default EPS bearer context and zero or more dedicated bearer EPS bearer contexts. An EPS bearer context can be mapped to one or more QoS flows. The mapping between a QoS flow and an EPS bearer context is not always one to one.

Table 10.1.00-1: AT commands/results applicable for 5GS PDU session
(equivalence between PDU Session / PDN Connection)

AT commands	Comments
+CGDCONT	Used to define a 5GS PDU session
+CGACT	Used to activate a 5GS PDU session.
+CCSTATEREQ	Used to change the state of a PDU session
+CGCMOD	Used to modify a 5GS PDU session
+CGCONTRDP	Used to show dynamically allocated 5GS PDU session parameters.
+CGEV: xxx …	Used to indicate 5GS PDU session operations status.

Table 10.1.00-2: AT commands/results applicable for 5GS QoS flow
(equivalence between QoS flow / EPS bearer resources)

AT commands	Comments
+CGDSCONT	Used to define a 5GS QoS flow
+CGSCONTRDP	Used to show dynamically allocated 5GS QoS flow parameters
+CGTFT	Used to define QoS rules for a 5GS QoS flow
+CGTFTRDP	Used to show the network assigned QoS rules for a 5GS QoS flow
+C5GQOS	Used to define QoS flows of a 5GS PDU session
+C5GQOSRDP	Used to show the dynamically allocated QoS flows corresponding to a 5GS PDU session.
+C5GPDUAUTHS	Used to define 5G PDU Session Authentication settings.
+C5GPDUAUTHR	Used to indicate 5G PDU Session Authentication Response.

Table 10.1.00-3: AT commands applicable for 5GS

AT commands	Comments
+CGATT	Used to attach/detach the MT from the packet domain service.
+C5GREG	Indicates 5GS network registration status over 3GPP access
+C5GREGN3GPP	Indicates 5GS network registration status over non-3GPP access
+C5GRDN3GPP	Used to register the MT to, or deregister the MT from, 5GS network over non-3GPP access

NOTE: The above is not a complete list of AT commands for 5GS but only those applicable to 5GS PDU sessions and 5GS QoS flows.