This clause describes the format of the parameters used for Radio Capability Signalling Optimisation (RACS). For further information on the use of the parameters see TS 23.401 and TS 23.501.

The UE radio capability ID is an identifier used to represent a set of UE radio capabilities, defined in TS 23.501 and in TS 23.401, composed as shown in Figure 29.2-1.

The UE radio capability ID is composed of the following elements (each element shall consist of hexadecimal digits only):

1. Type Field (TF): identifies the type of UE radio capability ID. The following values are defined:
   • 0: manufacturer-assigned UE radio capability ID;
   • 1: network-assigned UE radio capability ID; and
   • 2 to F: spare values for future use.
2. The Vendor ID is an identifier of UE manufacturer. This is defined by a value of Private Enterprise Number issued by Internet Assigned Numbers Authority (IANA) in its capacity as the private enterprise number administrator, as maintained at https://www.iana.org/assignments/enterprise-numbers/enterprise-numbers. Its length is 8 hexadecimal digits. This field is present only if the Type Field is set to 0;
3. The Version ID is the current Version ID configured in the UCMF. This field is present only if the Type Field is set to 1. Its length is 2 hexadecimal digits.
4. Radio Configuration Identifier (RCI): identifies the UE radio configuration. Its length is 11 hexadecimal digits.

This clause describes the format of the parameters needed to access the Multicast and Broadcast Services in 5GS. For further information on the use of the parameters see TS 23.247.

Temporary Mobile Group Identity (TMGI) is used within MBS to uniquely identify a broadcast MBS session or a multicast MBS session. TMGI is composed as shown in Figure 30.2.1.

The TMGI is composed of three parts:

1. MBS Service ID consisting of three octets. MBS Service ID consists of a 6-digit fixed-length hexadecimal number between 000000 and FFFFFF. MBS Service ID uniquely identifies an MBS service within a PLMN.
2. Mobile Country Code (MCC) consisting of three digits. The MCC identifies uniquely the country of domicile of the MB-SMF, except for the MCC value of 901, which does not identify any country and is assigned globally by ITU;
3. Mobile Network Code (MNC) consisting of two or three digits (depending on the assignment to the PLMN by its national numbering plan administrator). The MNC identifies the PLMN which the MB-SMF belongs to, except for the MNC value of 56 when the MCC value is 901, which does not identify any PLMN. For more information on the use of the TMGI, see TS 23.247.

In a SNPN (Stand-alone Non-Public Network), TMGI is used together with NID (Network Identifier) to identify an MBS Session.

The concept of Area Session ID is defined in TS 23.247. Area Session IDs are used for MBS sessions with location dependent content. An Area Session ID together with an MBS Session ID (i.e. TMGI or Source Specific IP Multicast address) shall uniquely identify an MBS session in a specific MBS Service Area. An Area Session Identity shall be a decimal number between 0 and 65535 (inclusive).

The concept of MBS Frequency Selection Area ID is defined in clause 6.5.4 of TS 23.247. The MBS Frequency Selection Area (FSA) ID is used for broadcast MBS session to guide the frequency selection of the UE. The MBS FSA ID identifies a preconfigured area within, and in proximity to, which the cell(s) announces the MBS FSA ID and the associating frequency (for details see TS 38.300). MBS FSA ID and their mapping to frequencies are provided to RAN nodes via OAM. An MBS FSA ID shall be a string of 6 hexadecimal digits.

The concept of Associated Session ID is defined in TS 23.247. The Associated Session ID is used to enable NG-RAN to identify the multiple MBS sessions delivering the same content when AF creates multiple broadcast MBS Sessions via different Core Networks in network sharing scenarios. An Associated Session ID may comprise a Source Specific IP Multicast Address (SSM) or a string. See clause 5.9.4.21.1 of TS 29.571 for the encoding of Associated Session ID in 5GC SBIs.

This clause describes the format of the parameters used for AmbientIoT. For further information on the use of the parameters, see clause 5 of TS 23.369.

The AIoT Device Permanent Identifier shall be composed as shown in Figure 31.2-1:

The AIoT Device Permanent Identifier shall be coded as the binary representation of their value and is composed of the following parts:

1. ID Type shall have a fixed length of 8 bits, including the following parts:
   • the bit 7 (the leftmost bit) indicates whether the PLMN ID part is present:
     • 0  PLMN ID part is not included.
     • 1  PLMN ID part is included.
   • the bit 6 indicates whether the NID part is present:
     • 0  NID part is not included.
     • 1  NID part is included.
   • the bit 5 indicates whether the Third Party Identifier part is present:
     • 0  Third Party Identifier part is not included.
     • 1  Third Party Identifier part is included.
   • the bit 4 and bit 3 indicates the type of Identification Information:
     • 00  Identification Information contains an Electronic Product Code (EPC), as defined in clause 14 of GS1 TDS Release 2.1 [153].
     • 01  Identification Information contains an unstructured information
     • 10  and 11 are spare for future use.
   • the bit 2 to bit 0 are spare for future use, and the bits 2 to bit 0 of ID Type shall be set to 000 in this release.
2. The Domain Information includes none, one or more of the following:
   • Optional PLMN Identifier (i.e., MCC and MNC) as specified in clause 12.1. When present, the PLMN Identifier shall have a fixed length of 24 bits. Bits 23 to 20 indicate the most significant MCC digit, bits 11 to 8 indicate the most significant MNC digit of a 3-digit MNC or a filler (1111) for a 2-digit MNC.
   • Optional Network Identifier (NID) as specified in clause 9.2.7 of TS 24.502. When present, NID shall have a fixed length of 44 bits.
   • Optional Third Party Identifier. When present, the Third Party Identifier shall have a fixed length of 24 bits.
3. The length of Identification Information shall be either 96 bits or 128 bits.

The Filtering Information is used to identify or filter multiple AIoT Devices, it includes a list of filtering elements as specified in clause 5.8 of TS 23.369, with a maximum length of 256 bits, the structure is shown in Figure 31.3-1.

The Filtering Information includes at most one filtering element within the Filtering Information for the following component of AIoT Device Permanent Identifier (i.e. ID Type, PLMN ID, NID or Third Party Identifier). The indicated filtering element within a Filtering Information should be matched and shall be coded as the binary representation of their value, it is composed of the following parts:

1. Count of Filtering Element shall have a fixed length of 4 bits to indicate the number of Filtering Element which included in a Filtering Information
2. The Filtering Element is composed of the following parts, the structure is shown in Figure 31.3-2:

1. Filtering Type indicates the AIoT Device Permanent Identifier is used to match the bitstring, with the following mapping:
   • 000  indicate the Filtering Type for the filtering element is ID Type;
   • 001  indicate the Filtering Type for the filtering element is PLMN ID;
   • 010  indicate the Filtering Type for the filtering element is NID;
   • 011  indicate the Filtering Type for the filtering element is Third Party Identifier;
   • 100  indicate the Filtering Type for the filtering element is Identification Information;
   • 101  reserved;
   • 110  reserved;
   • 111  reserved.
2. ID Type Filter, this field is present only if the Filtering Type is set to 000. The structure is show in Figure 31.3-3.
   
   Figure 31.3-3: Structure of ID Type Filter
   • Offset consisting of 3 bits. It represents the position of the ID Type's bitstring to be compared. Value 0 means the starting position is 1, and value 7 means the starting position is 8.
   • Length consisting of 3 bits. It represents the length of value of the bitstring to be compared.
   • Component Value consisting of 1 - 8 bits. It represents the component value of the bitstring to be compared.
3. Filtering information for PLMN ID shall have a fixed length of 24 bits, this field is present only if the Filtering Type is set to 001.
4. Filtering information for NID shall have a fixed length of 44 bits, this field is present only if the Filtering Type is set to 010.
5. Filtering information for Third Party Identifier shall have a fixed length of 24 bits, this field is present only if the Filtering Type is set to 011.
6. Identification Information Filter, there should be one Identification Information Filter within a Filtering Element, this field is present only if the Filtering Type is set to 100. The structure is show in Figure 31.3-4.
   It is used to filter the target devices with bitstring of Identification Information equal to a specific value.
   
   Figure 31.3-4: Structure of Identification Information Filter
   • Offset consisting of 7 bits. It represents the position of the Identification Information's bitstring to be compared. Value 0 means the starting position is 1, and value 127 means the starting position is 128.
   • Length consisting of 7 bits. It represents the length of value of the bitstring to be compared.
   • Component Value consisting of 1 - 128 bits. It represents the component value of the bitstring to be compared.

The AIoT Area ID consists of a Mobile Country Code (MCC), Mobile Network Code (MNC), and AIoT Area Code. It is composed as shown in Figure 31.4-1.

The AIoT Area ID is composed of the following elements:

• Mobile Country Code (MCC) consisting of three digits. The MCC identifies the country in which the PLMN is located;
• Mobile Network Code (MNC) consisting of two or three digits. The MNC identifies the country in which the PLMN is located;
• AIoT Area Code is a fixed length code (of 3 octets) identifying an AIoT Area within a PLMN. This part of the AIoT Area Code shall be coded using a full hexadecimal representation.
• Optional, Network Identifier (NID) as specified in clause 12.7.1.