School of Specs 24.501v20.0.0

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

9.11.3.87 NSAG 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 NSAG information information element is to provide the NSAG information to the UE.

The NSAG information information element is coded as shown in figures 9.11.3.87.1, 9.11.3.87.2 and 9.11.3.87.3, and table 9.11.3.87.1.

The NSAG information information element can contain a maximum of 32 NSAG entries.

In the NSAG information information element, at most 4 NSAG entries can contain a TAI list.

The NSAG information is a type 6 information element, with a minimum length of 9 octets and a maximum length of 3143 octets.

87654321
NSAG information IEIoctet 1
Length of NSAG information contentsoctet 2octet 3
NSAG 1octet 4octet m
NSAG 2octet m+1*octet n*
…octet n+1*octet u*
NSAG xoctet u+1*octet v*

Figure 9.11.3.87.1: NSAG information information element

87654321
Length of NSAGoctet 4
NSAG identifieroctet 5
S-NSSAI list of NSAGoctet 6octet j
NSAG priorityoctet j+1
TAI listoctet j+2*octet m*

Figure 9.11.3.87.2: NSAG

87654321
Length of S-NSSAI list of NSAGoctet 6
S-NSSAI value 1octet 7octet k
S-NSSAI value 2octet k+1*octet s*
…octet s+1*octet i-1*
S-NSSAI value xoctet i*octet j*

Figure 9.11.3.87.3: S-NSSAI list of NSAG

Table 9.11.3.87.1: NSAG information information element

NSAG part of the NSAG information information element (octet 4 to m)Each entry of the NSAG information information element consists of one NSAG in the NSAG information IE.
NSAG identifier(octet 5)NSAG identifier field contains an 8 bits NSAG ID value.
S-NSSAI list of NSAG (octet 6 to j)S-NSSAI list of NSAG field consists of one or more S-NSSAIs in the configured NSSAI. Each S-NSSAI in S-NSSAI list of NSAG field 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, without the mapped HPLMN SST field and without the mapped HPLMN SD field.
NSAG priority (octet j+1) The NSAG priority field represents the binary coded value of NSAG priority for cell reselection (see 3GPP TS 38.304 [28]) and random access (see 3GPP TS 38.321 [58]). The range of the NSAG priority is 0 to 255. A lower value indicates a higher priority, with 0 as the highest priority.
TAI list (octet j+2 to m)The TAI list field is coded as the length and value part of the 5GS tracking area identity list IE defined in clause 9.11.3.9 starting with the second octet.