School of Specs 24.501v20.0.0

3GPP 24.501 v20.0.0 — the document's own text

9.11.3.94 TNAN information

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 TNAN information information element is to enable the network to assign the UE, a suitable TNAN information (SSID and TNGF ID) for the requested NSSAI.

The TNAN information information element is coded as shown in figure 9.11.3.94.1 and table 9.11.3.94.1.

The TNAN information information element is a type 4 information element with a minimum length of 3 octets.

87654321
TNAN information IEIoctet 1
Length of TNAN information contentsoctet 2
0SpareSSID indTNGF ID indoctet 3
TNGF ID lengthoctet 4*
TNGF IDoctet 5*octet m*
SSID lengthoctet m+1*
SSIDoctet m+2*octet u*

Figure 9.11.3.94.1: TNAN information information element

Table 9.11.3.94.1: TNAN information information element

TNGF ID indication (TNGF ID ind) (bit 1 of octet 3)
The TNGF ID ind indicates whether the TNGF ID length field and the TNGF ID field are included in the TNAN information or not.
Bit
1
0TNGF ID length and TNGF ID not included
1TNGF ID length and TNGF ID included
SSID indication (SSID ind) (bit 2 of octet 3)
The SSID ind indicates whether the SSID length field and the SSID field are included in the TNAN information or not.
Bit
2
0SSID length and SSID not included
1SSID length and SSID included
Bits 3 to 8 of octet 3 are spare and shall be coded as zero
TNGF ID length (octet 4) indicates the length of the TNGF ID field.
TNGF ID (octets 5 to m)
The TNGF ID field is an octet string that indicates the TNGF ID.
SSID length (octet m+1) indicates the length of the SSID field.
SSID (octets m+2 to u)
The SSID field is an octet string which shall have a maximum length of 32 octets (see IEEE Std 802.11 [59]).