| Acknowledgement (ACK) (octet 1, bit 1) | |
| 0 | acknowledgement not requested |
| 1 | acknowledgement requested |
| Registration requested (RED) (octet 1, bit 2) | |
| 0 | registration not requested |
| 1 | registration requested |
| Bits 3 and 4 are spare and shall be coded as zero. | |
| MCC, Mobile country code (octet q+1 and bits 1 to 4 octet q+2) | |
| The MCC field is coded as in ITU-T Recommendation E.212 [42], Annex A. | |
| MNC, Mobile network code (bits 5 to 8 of octet q+2 and octet q+3) | |
| The coding of this field is the responsibility of each administration, but BCD coding shall be used. The MNC shall consist of 2 or 3 digits. If a network operator decides to use only two digits in the MNC, bits 5 to 8 of octet q+2 shall be coded as "1111". The MCC and MNC digits are coded as octets 6 to 8 of the Temporary mobile group identity IE in Figure 10.5.154 of TS 24.008. | |
| Indication that the UE is only allowed to access 5GS via CAG cells (CAGonly) (bit 1 of octet q+4) | |
| 0 | "Indication that the UE is only allowed to access 5GS via CAG cells" is not set (i.e., the UE is allowed to access 5GS via non-CAG cells) |
| 1 | "Indication that the UE is only allowed to access 5GS via CAG cells" is set (i.e., the UE is not allowed to access 5GS via non-CAG cells) |
| CAG-ID m (octet q+4m+1 to octet q+4m+4) | |
| This field contains the 32 bit CAG-ID. The coding of the CAG-ID is defined as the CAG-Identifier in TS 23.003. | |
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NOTE 1:
The Length of CAG information list contents shall be 0 if no subscription data for CAG information list exists.
NOTE 2:
The Length of entry contents shall be 4 if there is no allowed CAG-ID for the PLMN.
NOTE 3:
Bit 2 in octet q+4 may be set to 1 in the USIM (see TS 31.102).
NOTE 4:
For a given PLMN ID, there shall be up to one Entry containing the MCC value and the MNC value of the PLMN ID.
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| CIoT small data container contents (octet 3 to octet 257) | |
| These octets include user data to be delivered between UE and AMF. | |
| Data type (octet 3, bits 6 to 8) | |
| Bits
8 7 6 | |
| 0 0 0 | Control plane user data |
| 0 0 1 | SMS |
| 0 1 0 | Location services message container |
| All other values are spare. If received they shall be ignored. | |
| When the Data type is "Control plane user data", the PDU session identity and Downlink data expected (DDX) fields are encoded as follows: | |
| PDU session identity (octet 3, bits 1 to 4) | |
| Bits
3 2 1 | |
| 0 0 0 | No PDU session identity assigned |
| 0 0 1 | PDU session identity value 1 |
| 0 1 0 | PDU session identity value 2 |
| 0 1 1 | PDU session identity value 3 |
| 1 0 0 | PDU session identity value 4 |
| 1 0 1 | PDU session identity value 5 |
| 1 1 0 | PDU session identity value 6 |
| 1 1 1 | PDU session identity value 7 |
| Downlink data expected (DDX) (octet 3, bits 5 to 6) | |
| Bits
5 4 | |
| 0 0 | No information available |
| 0 1 | No further uplink and no further downlink data transmission subsequent to the uplink data transmission is expected |
| 1 0 | Only a single downlink data transmission and no further uplink data transmission subsequent to the uplink data transmission is expected |
| 1 1 | reserved |
| Data contents (octet 4 to octet 257) | |
| This field contains the control plane user data. | |
| When the Data type is "SMS", Bits 1 to 5 of octet 3 are spare and shall be coded as zero. | |
| Data contents (octet 4 to octet 257) | |
| This field contains an SMS message. | |
| When the Data type is "Location services message container": | |
| Downlink data expected (DDX) (octet 3, bits 5 to 4) | |
| This field is encoded as described above for the case when the Data type is "Control plane user data". | |
| Bits 3 to 1 of octet 3 are spare and shall be encoded as zero. | |
| Length of Additional information (octet 4) (see NOTE) | |
| Indicates the length, in octets, of the Additional information field. | |
| Additional information (octets 5 to m) | |
| Contains additional information if provided by the upper layer location services application. | |
| Data contents (octets m+1 to n) | |
| Contains the location services message payload. | |
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NOTE:
The Length of Additional information shall be set to zero if the upper layer location service application does not provide routing information.
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