3GPP 24.501 v20.0.0 — the document's own text
9.11.3.18A CAG information list
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 CAG information list information element is to provide "CAG information list" or to delete the "CAG information list" at the UE.
The CAG information list information element is coded as shown in figures 9.11.3.18A.1 and 9.11.3.18A.2 and table 9.11.3.18A.1.
The CAG information list is a type 6 information element, with a minimum length of 3 octets.
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| CAG information list IEI | octet 1 | |||||||
| Length of CAG information list contents | octet 2octet 3 | |||||||
| Entry 1 | octet 4*octet a* | |||||||
| Entry 2 | octet a+1*octet b* | |||||||
| … | octet b+1*octet g* | |||||||
| Entry n | octet g+1*octet h* |
Figure 9.11.3.18A.1: CAG information list information element
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| Length of entry contents | octet q | |||||||
| MCC digit 2 | MCC digit 1 | octet q+1 | ||||||
| MNC digit 3 | MCC digit 3 | octet q+2 | ||||||
| MNC digit 2 | MNC digit 1 | octet q+3 | ||||||
| 0Spare | 0Spare | 0Spare | 0Spare | 0Spare | 0Spare | 0Spare | CAGonly | octet q+4 |
| CAG-ID 1 | octet q+5*octet q+8* | |||||||
| CAG-ID 2 | octet q+9*octet q+12* | |||||||
| … | octet q+13*octet q+4m* | |||||||
| CAG-ID m | octet q+4m+1*octet q+4m+4* |
Figure 9.11.3.18A.2: Entry n
Table 9.11.3.18A.1: CAG information list information element
| 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 3GPP TS 24.008 [12]. | |
| Indication that the UE is only allowed to access 5GS via CAG cells (CAGonly) (bit 1 of octet q+4) | |
| Bit | |
| 1 | |
| 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 3GPP TS 23.003 [4].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 3GPP TS 31.102 [22]).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. |