8.2.118 3GPP Interface Type

29.2443GPPInterface between the Control Plane and the User Plane nodesRelease 17TS

The 3GPP Interface Type IE shall be encoded as shown in Figure 8.2.118-1. It indicates the 3GPP interface type of the Source Interface within the PDR IE, or the 3GPP interface type of the Destination Interface within the FAR IE.

Bits

Octets

8

7

6

5

4

3

2

1

1 to 2

Type = 160 (decimal)

3 to 4

Length = n

5

Spare

Interface Type value

6 to (n+4)

These octet(s) is/are present only if explicitly specified

Figure 8.2.118-1: 3GPP Interface Type

The 3GPP Interface Type value shall be encoded as a 6 bits binary integer as specified in in Table 8.2.118-1.

Table 8.2.118-1: Interface Type value

Interface value

Values (Decimal)

S1-U

0

S5 /S8-U (NOTE 1)

1

S4-U

2

S11-U

3

S12

4

Gn/Gp-U (NOTE 2)

5

S2a-U

6

S2b-U

7

eNodeB GTP-U interface for DL data forwarding

8

eNodeB GTP-U interface for UL data forwarding

9

SGW/UPF GTP-U interface for DL data forwarding

10

N3 3GPP Access

11

N3 Trusted Non-3GPP Access

12

N3 Untrusted Non-3GPP Access

13

N3 for data forwarding

14

N9 (or N9 for non-roaming, see NOTE 3)

15

SGi

16

N6

17

N19

18

S8-U

19

Gp-U

20

N9 for roaming

21

Iu-U

22

N9 for data forwarding

23

Sxa-U

24

Sxb-U

25

Sxc-U

26

N4-U

27

SGW/UPF GTP-U interface for UL data forwarding

28

N6mb/Nmb9

29

N3mb

30

N19mb

31

Spare

32 to 63

NOTE 1: If separation of roaming and non-roaming traffic is desired this value should only be used for the S5-U interface and "S8-U" (decimal 19) should be used for the S8-U interface.

NOTE 2: If separation of roaming and non-roaming traffic is desired this value should only be used for the Gn-U interface and "Gp-U" (decimal 20) should be used for the Gp-U interface.

NOTE 3: If separation of roaming and non-roaming traffic is desired, this value should only be used for N9 non-roaming interfaces and (decimal value "21") should be used for N9 roaming interfaces.