Content for TS 24.501 Word version: 18.5.0

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9.12 3GPP specific coding information defined within present document
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9.12 3GPP specific coding information defined within present document p. 1048

9.12.1 Serving network name (SNN) p. 1048

The serving network name (SNN) is used:

in the Network name field of the AT_KDF_INPUT attribute defined in RFC 5448;
in KAUSF derivation function as specified in TS 33.501 Annex A; and
in RES* and XRES* derivation function as specified in TS 33.501 Annex A.

SNN shall contain a UTF-8 string without terminating null characters.

SNN is of maximum length of 1020 octets.

SNN consists of SNN-service-code and SNN-network-identifier, delimited by a colon.

SNN-network-identifier identifies the serving PLMN or the serving SNPN.

MCC and MNC in the SNN-PLMN-ID are MCC and MNC of the serving PLMN. If the MNC of the serving PLMN has two digits, then a zero is added at the beginning.

MCC and MNC in the SNN-SNPN-ID are MCC and MNC of the serving SNPN. If the MNC of the serving SNPN has two digits, then a zero is added at the beginning.

SNN-NID contains an NID in hexadecimal digits.

ABNF syntax of SNN is specified in Table 9.12.1.1

Table 9.12.1.1: ABNF syntax of SNN

SNN =

SNN-service-code ":" SNN-network-identifier

SNN-service-code =

%x35.47 ; "5G"

SNN-network-identifier = SNN-PLMN-ID / SNN-SNPN-ID

SNN-PLMN-ID =

SNN-mnc-string SNN-mnc-digits "." SNN-mcc-string SNN-mcc-digits "." SNN-3gppnetwork-string "." SNN-org-string ; applicable when not operating in SNPN access operation mode.

SNN-SNPN-ID =

SNN-mnc-string SNN-mnc-digits "." SNN-mcc-string SNN-mcc-digits "." SNN-3gppnetwork-string "." SNN-org-string ":" SNN-NID ; applicable when operating in SNPN access operation mode.

SNN-mnc-digits =

DIGIT DIGIT DIGIT ; MNC of the PLMN ID

SNN-mcc-digits =

DIGIT DIGIT DIGIT ; MCC of the PLMN ID

SNN-mnc-string =

%x6d.6e.63 ; "mnc" in lower case

SNN-mcc-string =

%x6d.63.63 ; "mcc" in lower case

SNN-3gppnetwork-string =

%x33.67.70.70.6e.65.74.77.6f.72.6b ; "3gppnetwork" in lower case

SNN-org-string =

%x6f.72.67 ; "org" in lower case

SNN-NID =

11SNN-hexadecimal-digit ; NID in hexadecimal digits

SNN-hexadecimal-digit =

DIGIT / %x41 / %x42 / %x43 / %x44 / %x45 / %x46

EXAMPLE 1:

In case of a PLMN, if PLMN ID contains MCC = 234 and MNC = 15, SNN is 5G:mnc015.mcc234.3gppnetwork.org.

EXAMPLE 2:

In case of an SNPN, if SNPN ID contains a PLMN ID of MCC = 234 and MNC = 15 and an NID of 123456ABCDEH, SNN is 5G:mnc015.mcc234.3gppnetwork.org:123456ABCDE.