CPC H04L 47/2483 (2013.01) [H04B 7/18589 (2013.01); H04W 28/0215 (2013.01)] | 20 Claims |
1. A Protocol Data Unit (PDU) session management method, performed by a Session Management Function (SMF), comprising:
receiving a Session Management (SM) policy modification request for a PDU session, wherein the SM policy modification request triggers establishment of a first Quality of Service (QoS) flow in the PDU session, and the PDU session is established by a first terminal;
in response to no data transmission tunnel having a same identifier as a flow identifier of the first QoS flow existing between a first User Plane Function (UPF) of a first satellite and a second UPF of a second satellite, establishing a first data transmission tunnel between the first UPF and the second UPF, wherein the first satellite is a satellite serving the first terminal, the second satellite is a satellite serving a second terminal, and the second terminal is determined based on application layer information; and
instructing the first UPF to transmit data of the first QoS flow through the first data transmission tunnel.
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