3GPP 24.501 v20.0.0 — the document's own text
9.11.3.31 MICO indication
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 MICO indication information element is to indicate the use of MICO mode or the re-negotiation of MICO mode.
The MICO indication information element is coded as shown in figure 9.11.3.31.1 and table 9.11.3.31.1.
The MICO indication is a type 1 information element.
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| MICO indication IEI | 0Spare | 0Spare | SPRTI | RAAI | octet 1 |
Figure 9.11.3.31.1: MICO indication
Table 9.11.3.31.1: MICO indication
| Registration Area Allocation Indication (RAAI) (octet 1, bit 1) | |
|---|---|
| In the network to UE direction: | |
| Bit | |
| 1 | |
| 0 | all PLMN registration area not allocated |
| 1 | all PLMN registration area allocated |
| In the UE to network direction bit 1 is spare. The UE shall set this bit to zero. | |
| Strictly Periodic Registration Timer Indication (SPRTI) (octet 1, bit 2) | |
| In the network to UE and the UE to network direction: | |
| Bit | |
| 2 | |
| 0 | strictly periodic registration timer not supported |
| 1 | strictly periodic registration timer supported |
| Bits 3 and 4 are spare and shall be coded as zero.NOTE: In the network to UE direction in the CONFIGURATION UPDATE COMMAND message, bits 1 and 2 shall be coded as zero. |