8.2.211 MBSN4Resp-Flags

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

The MBSN4Resp-Flags IE indicates flags applicable to the PFCP Session Establishment/Modification/Deletion Response message for a PFCP session that is associated with an MBS Session. It is coded as depicted in Figure 8.2.211-1.

		Bits
	Octets	8	7	6	5	4	3	2	1
	1 to 2	Type = 312 (decimal)
	3 to 4	Length = n
	5	Spare					N19DTR	JMTI	NN19DT
	6 to (n+4)	These octet(s) is/are present only if explicitly specified

Figure 8.2.211-1: MBSN4Resp-Flags

The following bits within Octet 5 shall indicate:

– Bit 1 – NN19DT (New N19mb Downlink Tunnel): if this bit is set to "1", it indicates that the UPF has allocated a new N19mb DL Tunnel ID for the MBS Session;

– Bit 2 – JMTI (Joined N19mb Multicast Tree Indication): if this bit is set to "1", it indicates that the UPF has joined the multicast tree from MB-UPF;

– Bit 3 – N19DTR (N19mb Downlink Tunnel Removal): if this bit is set to "1", it indicates that the UPF is going to remove the N19mb DL Tunnel for receiving the MBS session data, because the PFCP session removing the PDR is the last PFCP session which was associated with the N19mb DL Tunnel in the UPF;

– Bit 4 to 8 – Spare, for future use, shall be set to "0" by the sender and discarded by the receiver.

NOTE: See clause 5.34.3.2 for further description of the setting and use of the bits in the MBSN4Resp-Flags.