3GPP 23.501 v20.2.0 — the document's own text
5.49.1.2 Backhaul PDU Session handling for MWAB
Taught in 26. Relays, satellites, femtos and shared networks (The 5G system architecture, in depth).
The use of multiple BH PDU Sessions for MWAB-gNB N2, N3, Xn interfaces and OAM access is based on configuration from OAM of the MWAB Broadcasted PLMN/SNPN.
The MWAB-gNB requests BH PDU Session(s) from the MWAB-UE by providing corresponding traffic descriptors specified in TS 23.503 [45] and TS 24.526 [110], via the implementation based internal communication between the MWAB-gNB and the MWAB-UE.
The MWAB-UE establishes, modifies BH PDU Sessions based on the received traffic descriptors from MWAB-gNB, configured URSP rules, and local configuration.
NOTE: The MWAB-gNB, acting as upper layer of the MWAB-UE described in TS 24.526 [110], can categorize the traffic in different ways (e.g. based on different interfaces Xn/N2/N3/OAM, or nature of the traffic (control signalling vs user plane traffic), or slices supported by the MWAB-gNB) and provides corresponding traffic descriptors to MWAB-UE. The internal communication details between MWAB-gNB and MWAB-UE is outside the scope of this specification. For slice information based categorization, see clause 5.49.1.4.