Question: What is the purpose of the "UE-requested PDU session establishment" procedure in 5GSM?
Option 1: To modify an existing PDU session.
Option 2: To release a PDU session.
Option 3: To request for establishment of PDU sessions or to perform handover of an existing PDU session between 3GPP access and non-3GPP access, or to transfer an existing PDN connection in the EPS to the 5GS.
Option 4: To report remote UE information.
Explanation: The "UE-requested PDU session establishment" procedure is initiated by the UE to request for establishment of PDU sessions or to perform handover of an existing PDU session between 3GPP access and non-3GPP access, or to transfer an existing PDN connection in the EPS to the 5GS. This procedure allows the UE to establish a new PDU session or modify an existing one, which is essential for maintaining connectivity and accessing services in the 5G network.