US 11,968,127 B2
Protocol data unit (PDU) session management method and apparatus
Xianfeng Liu, Beijing (CN); Hucheng Wang, Beijing (CN); and Hui Xu, Beijing (CN)
Assigned to Datang Mobile Communications Equipment Co., Ltd., Beijing (CN)
Appl. No. 18/255,422
Filed by DATANG MOBILE COMMUNICATIONS EQUIPMENT CO., LTD., Beijing (CN)
PCT Filed Nov. 18, 2021, PCT No. PCT/CN2021/131573
§ 371(c)(1), (2) Date Jun. 1, 2023,
PCT Pub. No. WO2022/116855, PCT Pub. Date Jun. 9, 2022.
Claims priority of application No. 202011407142.1 (CN), filed on Dec. 4, 2020; and application No. 202011540381.4 (CN), filed on Dec. 23, 2020.
Prior Publication US 2024/0031300 A1, Jan. 25, 2024
Int. Cl. H04L 47/2483 (2022.01); H04B 7/185 (2006.01); H04W 28/02 (2009.01)
CPC H04L 47/2483 (2013.01) [H04B 7/18589 (2013.01); H04W 28/0215 (2013.01)] 20 Claims
OG exemplary drawing
 
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.