Section: 6.2.9.3 ProSeP
Content: The ProSeP requires interaction between upper layers and the 5GSM entities in the UE acting as a 5G ProSe layer-3 UE-to-network relay UE (see 3GPP TS 24.554[ Proximity-services (ProSe) in 5G System (5GS) protocol aspects; Stage 3 ]  [19E] for further details). The upper layers may request the 5GSM entity: a) to establish a PDU session indicating one or more PDU session attributes; or b) to release the existing PDU session; or c) to establish a PDU session indicating one or more PDU session attributes, and to release the existing PDU session. Each of the 5GSM entities in the UE acting as a 5G ProSe layer-3 UE-to-network relay UE shall indicate attributes (e.g. PDU session identity, SSC mode, S-NSSAI, DNN, PDU session type, access type, PDU address) of the newly established PDU session to the upper layers. If the PDU session is released, the 5GSM entity handling the PDU session shall inform the PDU session identity of the released PDU session to the upper layers.