3GPP 24.501 v20.0.0 — the document's own text
9.11.3.108 On-demand NSSAI
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 On-demand NSSAI information element is to provide a list of one or more on-demand S-NSSAIs and the associated slice deregistration inactivity timer value per the on-demand S-NSSAI to the UE.
The On-demand NSSAI information element is coded as shown in figure 9.11.3.108.1, figure 9.11.3.108.2, and table 9.11.3.108.1.
The On-demand NSSAI is a type 4 information element with a minimum length of 5 octets and a maximum length of 210 octets.
| 8 | 7 | 6 | 5 | 4 | 3 | 2 | 1 | |
|---|---|---|---|---|---|---|---|---|
| On-demand NSSAI IEI | octet 1 | |||||||
| Length of On-demand NSSAI contents | octet 2 | |||||||
| Information of on-demand S-NSSAI 1 | octet 3octet a | |||||||
| Information of on-demand S-NSSAI 2 | octet (a+1)*octet b* | |||||||
| … | octet (b+1)*octet c* | |||||||
| Information of on-demand S-NSSAI n | octet (c+1)*octet d* |
Figure 9.11.3.108.1: On-demand NSSAI information element
| Length of Information of on-demand S-NSSAI | octet 3 |
|---|---|
| On-demand S-NSSAI | octet 4octet a-3 |
| Slice deregistration inactivity timer | octet (a-2)*octet a* |
Figure 9.11.3.108.2: Information of on-demand S-NSSAI
Table 9.11.3.108.1: On-demand NSSAI information element
| Value part of the On-demand NSSAI information element (octet 3 to d)The value part of the On-demand NSSAI information element consists of one or more Information of on-demand S-NSSAIs. Each Information of on-demand S-NSSAI consists of one on-demand S-NSSAI and optionally the slice deregistration inactivity timer of the on-demand S-NSSAI. The number of information of on-demand S-NSSAIs shall not exceed 16.On-demand S-NSSAI (octet 4 to a-3)On-demand S-NSSAI is coded as the length and value part of S-NSSAI information element as specified in clause 9.11.2.8 starting with the second octet.Slice deregistration inactivity timer (octet (a-2)* to a*) Slice deregistration inactivity timer is coded as the value part of Time duration information element as specified in clause 9.9.3.68 of 3GPP TS 24.301 [15] starting with the third octet. |
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