US Patent No. 11,071,167

METHOD, APPARATUS, SYSTEM, AND DEVICE FOR MANAGING A SESSION CORRESPONDING TO MULTIPLE SESSION MANAGEMENT FUNCTION NETWORK ELEMENTS


Patent No. 11,071,167
Issue Date July 20, 2021
Title Method, Apparatus, System, And Device For Managing A Session Corresponding To Multiple Session Management Function Network Elements
Inventorship Tingfang Tang, Shenzhen (CN)
Yan Li, Beijing (CN)
Hui Ni, Beijing (CN)
Assignee Huawei Technologies Co., Ltd., Shenzhen (CN)

Claim of US Patent No. 11,071,167


1. A method, comprising:receiving, by a first session management function network element, a session request message from a second session management function network element, wherein the session request message requests to establish a new branch of an established session, and the established session includes an established branch corresponding to a first anchor user plane function network element managed by the second session management function network element;
selecting, by the first session management function network element, a second anchor user plane function network element corresponding to the new branch of the established session;
allocating, by the first session management function network element, internet protocol (IP) information of a terminal device to the new branch of the established session based on the selected second anchor user plane function network element; and
sending, by the first session management function network element, the IP information of the terminal device to the second session management function network element, wherein the IP information of the terminal device is usable to obtain policy information corresponding to the IP information of the terminal device.