School of Specs 24.501v20.0.0

3GPP 24.501 v20.0.0 — the document's own text

5.4.5.3.1 General

Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).

The purpose of the network-initiated NAS transport procedure is to provide a transport of:

  • a single 5GSM message;
  • SMS;
  • an LPP message;

c1) an SLPP message;

  • an SOR transparent container;
  • a single uplink 5GSM message which was not forwarded due to routing failure;
  • a single uplink 5GSM message which was not forwarded due to congestion control;
  • a UE policy container;
  • a single uplink 5GSM message which was not forwarded, because the PLMN's maximum number of PDU sessions has been reached;

h1) a single uplink 5GSM message which was not forwarded, because the maximum number of PDU sessions with active user-plane resources has been reached;

h2) a single uplink 5GSM message which was not forwarded, because of ongoing network slice-specific authentication and authorization procedure for the S-NSSAI that is requested;

h3) a single uplink 5GSM message which was not forwarded, because the UE requested to establish an MA PDU session for LADN DNN;

h4) a single uplink 5GSM message which was not forwarded, because the maximum number of UEs for a network slice has been reached;

h5) a single uplink 5GSM message which was not forwarded because the UE is marked in the UE's 5GMM context that it is not allowed to request UAS services;

h6) a single uplink 5GSM message was not forwarded, because the UE not supporting S-NSSAI location validity information requested forwarding of an 5GSM message with Request type IE is set to "initial request" when not in the NS-AoS of the related S-NSSAI;

  • a single uplink 5GSM message which was not forwarded due to service area restrictions;

i1) a single uplink 5GSM message which was not forwarded because the UE is registered to a PLMN via:

    • a satellite NG-RAN cell; or
    • a non-satellite NG-RAN cell where the PLMN supports selected features that are normally applied in the satellite access and the UE indicates NonSATLSP supported,

that is not allowed to operate at the present UE location;

  • a UE parameters update transparent container;
  • a location services message;
  • a CIoT user data container;

l1) a single uplink CIoT user data container or control plane user data which was not forwarded due to routing failure;

l2) a single uplink CIoT user data container which was not forwarded due to congestion control;

  • a service-level-AA container;

m1) an event notification for upper layers;

m2) a UPP-CMI container;

m3) a single UPP-CMI container which was not forwarded due to user plane positioning not authorized; or

  • multiple of the above types.

from the AMF to the UE in a 5GMM message.