公开(公告)号：US20230388802A1

公开(公告)日：2023-11-30

申请号：US18232227

申请日：2023-08-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Xiange HU ,  Linping YANG ,  Wen HU ,  Li QIANG

IPC: H04W12/37 ,  H04W12/033 ,  H04L9/40

CPC classification number: H04W12/37 ,  H04W12/033 ,  H04L63/20

Abstract: This application discloses a method for configuring an EPS NAS security algorithm, and a related apparatus in the field of communication technologies. In the technical solution provided in this application, an access and mobility management function entity needs to determine whether a selected EPS NAS security algorithm has been successfully provided to a terminal device, and after determining that the selected EPS NAS security algorithm has not been successfully provided to the terminal device, the access and mobility management function entity provides the selected EPS NAS security algorithm to the terminal device again. According to the technical solution provided in this application, it is ensured that the access and mobility management function entity can successfully configure the EPS NAS security algorithm for the terminal device.

公开(公告)号：US20240179524A1

公开(公告)日：2024-05-30

申请号：US18428527

申请日：2024-01-31

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Linping YANG ,  Juan DENG ,  Wen HU ,  Xiange HU ,  Xiao WEN ,  Li QIANG ,  Lin SHU

IPC: H04W12/08 ,  H04W12/72

CPC classification number: H04W12/08 ,  H04W12/72

Abstract: A security context update method and a communication apparatus are provided. The method is performed by a terminal, and includes: storing a security context of first access and a security context of second access when the first access of the terminal and the second access of the terminal enter a deregistered state. The first access is one of 3GPP access and non-3GPP access, the second access is the other of the 3GPP access and the non-3GPP access, and the first access and the second access are different. According to the method, when the terminal supports multiple records for multiple registration, storage occasions of NAS security contexts corresponding to the 3GPP access and the non-3GPP access are provided.

公开(公告)号：US20230337167A1

公开(公告)日：2023-10-19

申请号：US18337908

申请日：2023-06-20

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Vishnu PREMAN ,  Rama Kumar MOPIDEVI ,  Gong CHEN ,  Xibo SUN ,  Jianhai CUI ,  Linping YANG

IPC: H04W60/00 ,  H04W24/04 ,  H04W8/06

CPC classification number: H04W60/00 ,  H04W24/04 ,  H04W8/06 ,  H04W84/042

Abstract: A client device for efficient disaster handling based on a novel list of PLMNs for disaster conditions. The client device is provided with a list of PLMNs that is used by the client device in response to the serving PLMN of the client device going into a disaster condition. Upon determining that the serving PLMN is in a disaster condition, the client device registers at a visiting PLMN in the PLMN list. The novel list of PLMNs for disaster conditions enables the client device to roam into PLMNs which is forbidden during normal conditions.

公开(公告)号：US20230328833A1

公开(公告)日：2023-10-12

申请号：US18328152

申请日：2023-06-02

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Vishnu PREMAN ,  Rama Kumar MOPIDEVI ,  Gong CHEN ,  Xibo SUN ,  Jianhai CUI ,  Linping YANG

IPC: H04W76/20 ,  H04W60/06 ,  H04W76/30

CPC classification number: H04W76/20 ,  H04W60/06 ,  H04W76/30 ,  H04W84/042

Abstract: A network node for a communication system is associated with a serving public land mobile network (PLMN) for a first client device. The network node is configured to transmit a first control message to the first client device in response to determining that the serving PLMN for the first client device is in a disaster condition. The first control message indicates that the serving PLMN for the first client device is in the disaster condition.

公开(公告)号：US20230232357A1

公开(公告)日：2023-07-20

申请号：US18188512

申请日：2023-03-23

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Juan DENG ,  Linping YANG ,  Lin SHU ,  Fei LI

IPC: H04W60/00 ,  H04W60/06 ,  H04W12/106 ,  H04W12/08

CPC classification number: H04W60/005 ,  H04W60/06 ,  H04W12/106 ,  H04W12/08

Abstract: A method for processing a non-access stratum context is as follows: A terminal device sends a registration request message to a first public land mobile network PLMN. The terminal device receives a registration accept message from the first PLMN. When the terminal device deregisters from the first PLMN over a first access network, the terminal device stores, in a storage medium of the terminal device, a first PLMN identifier of the first PLMN and a first NAS security context established by the terminal device with the first PLMN. Embodiments of this application are used for a processing process of the non-access stratum context.