3GPP 24.501 v20.0.0 — the document's own text
9.11.3.56 UE status
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 UE status information element is to provide the network with information concerning aspects of the current UE registration status which is used for interworking with EPS.
The UE status information element is coded as shown in figure 9.11.3.56.1 and table 9.11.3.56.1.
The UE status is a type 4 information element with a length of 3 octets.
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| UE status IEI | octet 1 | |||||||
| Length of UE status contents | octet 2 | |||||||
| 0Spare | 0Spare | 0Spare | 0Spare | 0Spare | 0Spare | N1 mode reg | S1 mode reg | octet 3 |
Figure 9.11.3.56.1: UE status information element
Table 9.11.3.56.1: UE status information element
| EMM registration status (S1 mode reg) (octet 3, bit 1) | ||||
|---|---|---|---|---|
| 0 | UE is not in EMM-REGISTERED state | |||
| 1 | UE is in EMM-REGISTERED state | |||
| 5GMM registration status (N1 mode reg) (octet 3, bit 2) | ||||
| 0 | UE is not in 5GMM-REGISTERED state | |||
| 1 | UE is in 5GMM-REGISTERED state | |||
| All other bits in the octet 3 are spare and shall be coded as zero. |