9 Coding other than information element coding

24.5873GPPRelease 17Stage 3TSVehicle-to-Everything (V2X) services in 5G System (5GS)

9.1 Overview

This clause contains the coding of information other than the one provided by the information elements described in clause 8.

9.2 V2X message family encoding

The values are specified to identify the V2X message family according to table 9.2.1.

Table 9.2.1: V2X message family

V2X message family (octet 14)

Bits

8

7

6

5

4

3

2

1

0

0

0

0

0

0

0

1

IEEE 1609, see IEEE 1609.3 [13]

0

0

0

0

0

0

1

0

ISO, see ISO 29281-1 [17]

0

0

0

0

0

0

1

1

ETSI-ITS, see ETSI EN 302 636-3 [12]

0

0

0

0

0

1

0

0

CCSA, see CCSA YD/T 3707-2020 [24]

All other values are reserved.

9.3 Non-IP PDU format

The non-IP PDU is coded according to figure 9.3.1 and table 9.3.1.

Bits

8

7

6

5

4

3

2

1

Octets

Non-IP type

1

Non-IP payload

2

n

Figure 9.3.1: Non-IP PDU format

Table 9.3.1: Non-IP PDU values

Octet 1 contains the non-IP type field which indicates the V2X message family (see table 9.2.1) included in the non-IP payload.

Octets 2 to n contain the non-IP payload field containing the non-IP data.