3GPP 24.501 v20.0.0 — the document's own text
9.11.4.17 Re-attempt indicator
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 Re-attempt indicator information element is to indicate a condition under which the UE is allowed in the current PLMN or its equivalent PLMN(s) or the current SNPN or its equivalent SNPNs for the same DNN, to re-attempt a session management procedure (see 3GPP TS 24.301 [15]) corresponding to the 5GS session management procedure which was rejected by the network.
The Re-attempt indicator information element is coded as shown in figure 9.11.4.17.1 and table 9.11.4.17.1.
The Re-attempt indicator is a type 4 information element with a length of 3 octets.
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| Re-attempt indicator IEI | octet 1 | |||||||
| Length of Re-attempt indicator contents | octet 2 | |||||||
| 0Spare | 0Spare | 0Spare | 0Spare | 0Spare | 0Spare | EPLMNC | RATC | octet 3 |
Figure 9.11.4.17.1: Re-attempt indicator
Table 9.11.4.17.1: Re-attempt indicator
| RATC (octet 3, bit 1) | |
|---|---|
| Bit | |
| 1 | |
| 0 | UE is allowed to re-attempt the procedure in S1 mode |
| 1 | UE is not allowed to re-attempt the procedure in S1 mode |
| EPLMNC (octet 3, bit 2) | |
| Bit | |
| 2 | |
| 0 | UE is allowed to re-attempt the procedure in an equivalent PLMN or equivalent SNPN |
| 1 | UE is not allowed to re-attempt the procedure in an equivalent PLMN or equivalent SNPN |
| Bits 3 to 8 of octet 3 are spare and shall be encoded as zero. |