3GPP 24.501 v20.0.0 — the document's own text
8.2.12.1 Message definition
Taught in 4. Inside TS 24.501, the document at the centre (CT1 — the group that writes what your phone says, overview).
The DEREGISTRATION REQUEST message is sent by the UE to the AMF. See table 8.2.12.1.1.
Message type: DEREGISTRATION REQUEST
Significance: dual
Direction: UE to network
Table 8.2.12.1.1: DEREGISTRATION REQUEST message content
| IEI | Information Element | Type/Reference | Presence | Format | Length |
|---|---|---|---|---|---|
| Extended protocol discriminator | Extended protocol discriminator9.2 | M | V | 1 | |
| Security header type | Security header type9.3 | M | V | 1/2 | |
| Spare half octet | Spare half octet9.5 | M | V | 1/2 | |
| De-registration request message identity | Message type9.7 | M | V | 1 | |
| De-registration type | De-registration type9.11.3.20 | M | V | 1/2 | |
| ngKSI | NAS key set identifier9.11.3.32 | M | V | 1/2 | |
| 5GS mobile identity | 5GS mobile identity9.11.3.4 | M | LV-E | 6-n | |
| 3C | Unavailability information | Unavailability information9.11.2.20 | O | TLV | 3-9 |
| 71 | NAS message container | NAS message container9.11.3.33 | O | TLV-E | 4-n |