Content for TS 37.340 Word version: 17.3.0

1… 4… 4.2… 4.3… 5… 7… 8… 9 10… 10.2… 10.2.2… 10.3… 10.3.2 10.4… 10.5… 10.5.2 10.6 10.7… 10.8… 10.9… 10.10… 10.11… 10.12… 10.12.2 10.13… 10.14… 10.15 10.16… 10.17… 10.18… 10.19… 11… A B…

10.15 F1-C Traffic Transfer
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10.15 F1-C Traffic Transfer |R16| p. 98

In EN-DC/NR-DC, the F1-C Traffic Transfer message is sent by the MN to the SN or by the SN to MN to transfer the F1-C traffic to and from an IAB-node.

Copy of original 3GPP image for 3GPP TS 37.340, Fig. 10.15-1: F1-C transfer procedure in EN-DC

Figure 10.15-1: F1-C transfer procedure in EN-DC
(⇒ copy of original 3GPP image)

Step 1.

When the IAB-MT sends a F1-AP message encapsulated in SCTP/IP or F1-C related (SCTP/)IP packet, it sends it to the MN in a container within ULInformationTransfer message as specified in TS 36.331.

Step 2.

The MN initiates the F1-C Traffic Transfer procedure, in which it transfers the received F1-AP message encapsulated in (SCTP/)IP or F1-C related (SCTP/)IP packet as an octet string.

Step 3.

When the SN sends a F1-AP message encapsulated in SCTP/IP or F1-C related (SCTP/)IP packet, it sends it to the MN as an octet string through the F1-C Traffic Transfer procedure.

Step 4.

The MN sends the received F1-AP message encapsulated in SCTP/IP or F1-C related (SCTP/)IP packet to the IAB-MT in a container within DLInformationTransfer message as specified in TS 36.331.

Copy of original 3GPP image for 3GPP TS 37.340, Fig. 10.15-2: Scenario 1: F1-C transfer between IAB-MT and SN (F1-terminating node) in NR-DC

Figure 10.15-2: Scenario 1: F1-C transfer between IAB-MT and SN (F1-terminating node) in NR-DC
(⇒ copy of original 3GPP image)

Step 1.

The IAB-MT sends a F1-AP message encapsulated in SCTP/IP or F1-C related (SCTP/)IP packet to the MN (non-F1-terminating node) via SRB2 in a container within ULInformationTransfer message as specified in TS 38.331.

Step 2.

The MN initiates the F1-C Traffic Transfer procedure, in which it transfers the received F1-AP message encapsulated in (SCTP/)IP or F1-C related (SCTP/)IP packet as an octet string.

Step 3.

The SN (F1-terminating node) sends a F1-AP message encapsulated in SCTP/IP or F1-C related (SCTP/)IP packet to the MN as an octet string through the F1-C Traffic Transfer procedure.

Step 4.

The MN sends the received F1-AP message encapsulated in SCTP/IP or F1-C related (SCTP/)IP packet to the IAB-MT via SRB2 in a container within DLInformationTransfer message as specified in TS 38.331.