The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 15, 2026
Filed:
Nov. 01, 2022
Huawei Technologies Co., Ltd., Shenzhen, CN;
Haiyang Sun, Beijing, CN;
Yan Li, Beijing, CN;
HUAWEI TECHNOLOGIES CO., LTD., Shenzhen, CN;
Abstract
Communication methods and apparatus are provided in this disclosure. The method includes that after receiving a registration request sent by a terminal device, an access and mobility management function (AMF) sends first information to a unified data management (UDM) network element. The first information includes network slice selection assistance information (NSSAI) requested by the terminal device, single network slice selection assistance information (S-NSSAI) in a home domain corresponding to the NSSAI requested by the terminal device, or subscribed S-NSSAI of the terminal device. The AMF receives steering of roaming (SoR) information of the terminal device from the UDM. The SoR information includes information about a preferred public land mobile network (PLMN) of the terminal device. The AMF sends the SoR information to the terminal device. Based on these solutions, the UDM may determine each preferred PLMN of the terminal device based on a network slice expected by the terminal device.