公开(公告)号：US12262203B2

公开(公告)日：2025-03-25

申请号：US17708841

申请日：2022-03-30

Applicant: Huawei Technologies Co., Ltd.

Inventor： Longhua Guo

IPC: H04W12/08 ,  H04W12/106 ,  H04W48/02 ,  H04W48/08 ,  H04W76/30

Abstract: A configuration data update, where the method includes: When configuration data for a terminal apparatus is first configuration data, where the first configuration data includes a first restriction indication and an empty closed access group (CAG) list, the first restriction indication is used to indicate the terminal apparatus to access a network through a CAG, an access and mobility management function apparatus configures the terminal apparatus to be in a state in which the terminal apparatus is allowed to access the network not only through a CAG in the CAG list. When the configuration data for the terminal apparatus is updated to second configuration data, where a CAG list in the second configuration data is not empty or does not include the first restriction indication, the access and mobility management function apparatus sends the second configuration data to the terminal apparatus.

公开(公告)号：US12231900B2

公开(公告)日：2025-02-18

申请号：US17675784

申请日：2022-02-18

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Longhua Guo ,  He Li

IPC: H04W12/72 ,  H04W8/18

Abstract: Embodiments of this application provide example communication methods and apparatuses. One example communication method is applied to a communications device, where a subscriber identification module (SIM) card is installed in the communications device, and where the example communication method includes determining, by the communications device, that the SIM card is removed. The communications device can then send alarm information to a network device, where the alarm information indicates that the SIM card in the communications device is removed, and where security protection is performed on the alarm information based on security context stored in the communications device. The communications device can then delete the security context.

公开(公告)号：US20230086032A1

公开(公告)日：2023-03-23

申请号：US18050977

申请日：2022-10-28

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Longhua Guo ,  He Li ,  Rong Wu ,  Yizhuang Wu

IPC: H04L9/08 ,  H04L9/14 ,  H04L67/141

Abstract: This application provides a key management method, a device, and a system. The method includes: A terminal device sends a first application session establishment request message to a first application function network element, where the establishment request message carries identification information of a first key, and the first key is an authentication and key management for applications AKMA key. The terminal device receives a first authentication request message in a procedure of the re-authentication. The terminal device sends a response message for the first authentication request message in the procedure of the re-authentication. The terminal device receives a response message for the establishment request message. The terminal device derives a communication key between the terminal device and the first application function network element by using the first key.

公开(公告)号：US20220210859A1

公开(公告)日：2022-06-30

申请号：US17695140

申请日：2022-03-15

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Longhua Guo ,  Li Hu ,  He Li ,  Rong Wu

IPC: H04W76/25 ,  H04W12/03 ,  H04W60/04 ,  H04L9/32

Abstract: Embodiments of this application relate to the field of communication technologies, and provide a data transmission method and an apparatus, to ensure security of radio capability information of a terminal in a transmission process. The method includes: A terminal performs NAS security protection on radio capability information based on a NAS security context before establishing an AS security context; then the terminal sends the NAS-security-protected radio capability information to a mobility management network element; and after receiving the NAS-security-protected radio capability information, the mobility management network element performs security deprotection on the NAS-security-protected radio capability information, to obtain and store the radio capability information of the terminal. In this way, in a scenario in which an access network device requires the radio capability information of the terminal, the mobility management network element may send the radio capability information to the access network device.