公开(公告)号：US11463873B2

公开(公告)日：2022-10-04

申请号：US16749911

申请日：2020-01-22

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Li Hu ,  Jing Chen

IPC: H04W12/00 ,  H04W12/0431 ,  H04W36/00 ,  H04W36/08 ,  H04W12/0433 ,  H04W92/20

Abstract: The present disclosure discloses a communication method and a device. The method is performed by a target base station and includes: receiving a handover request from a source base station, where the handover request includes a first key and first indication information, and the first indication information is used to indicate whether the first key is an updated key; and sending second indication information to the source base station based on the handover request, where the second indication information is used to indicate whether an access layer key between the target base station and a terminal device is an updated key. Using the embodiments of the present disclosure helps resolve a problem that a potential security risk exists in data transmitted between the terminal device and the target base station, and helps resolve a problem that a key change of the terminal device is not controlled by the base station.

公开(公告)号：US20220104097A1

公开(公告)日：2022-03-31

申请号：US17548251

申请日：2021-12-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Li Hu ,  Yinghao Jin ,  Rui Wang

IPC: H04W36/30 ,  H04W36/00

Abstract: When triggering a handover request, a source network device requests a measurement indication from a target access network device using the handover request, where the measurement indication indicates the terminal device to measure a channel state of a target cell. In this way, the source network device sends the measurement indication to the terminal device using an RRC reconfiguration message. Then, the terminal device measures the specified channel state of the target cell based on the measurement indication, to obtain a measurement result, and then determines, depending on whether the measurement result meets a handover condition, whether to perform cell handover.

公开(公告)号：US20220060888A1

公开(公告)日：2022-02-24

申请号：US17513021

申请日：2021-10-28

Applicant: Huawei Technologies Co., Ltd.

Inventor： He Li ,  Li Hu ,  Rong Wu

IPC: H04W12/033 ,  H04W12/041 ,  H04W12/0431 ,  H04W12/10 ,  H04W76/19

Abstract: A communication method and a communications apparatus, where the method includes: after receiving an RRC resume request message from a UE, determining, by a target access network device, a first user plane security protection method between the target access network device and the UE based on a context information obtaining response from a source access network device; determining a first user plane security key between the target access network device and the UE; when receiving first uplink user plane data from the UE, performing user plane security deprotection on the first uplink user plane data based on the first user plane security key and the first user plane security protection method, to obtain uplink user plane data; and sending the uplink user plane data.

公开(公告)号：US20210058789A1

公开(公告)日：2021-02-25

申请号：US17089216

申请日：2020-11-04

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Li Hu ,  Jing Chen ,  Kai Pan

IPC: H04W12/08 ,  H04W48/02 ,  H04W12/00

Abstract: This application provides a method for restricting access of a terminal device, and an apparatus. The method includes: receiving, by an access network device, a first identifier that is from a terminal device, where the first identifier is used to identify the terminal device; and if the first identifier matches a second identifier, restricting, by the access network device, access of the terminal device, where the second identifier is used to identify a terminal device having abnormal behavior. Based on the solution, the access network device pre-records the second identifier of the terminal device having the abnormal behavior.

公开(公告)号：US20200275508A1

公开(公告)日：2020-08-27

申请号：US16874117

申请日：2020-05-14

Applicant: Huawei Technologies Co., Ltd.

Inventor： Li Hu ,  Bingzhao Li ,  Jing Chen ,  Tingting Geng

IPC: H04W76/18 ,  H04W12/04 ,  H04W12/10 ,  H04W76/34

Abstract: This application provides a connection resume request method and an apparatus to avoid key asynchronization between a terminal and a source base station in the scenario that a target base station rejects resuming of a RRC connection of the terminal including: generating, by a terminal, a new access stratum key; sending, by the terminal to a target base station, a connection resume request message requesting to resume a radio resource control (RRC) connection; receiving, by the terminal, a connection resume rejection message from the target base station, wherein the connection resume rejection message indicates that the resuming of the RRC connection that is rejected; and resuming, by the terminal, the new access stratum key to a previous access stratum key, wherein the previous access stratum key is an access stratum key that is used, before the apparatus enters an inactive state, by the terminal and the source base station.

公开(公告)号：US20200137577A1

公开(公告)日：2020-04-30

申请号：US16728764

申请日：2019-12-27

Applicant: Huawei Technologies Co., Ltd.

Inventor： He Li ,  Jing Chen ,  Li Hu

IPC: H04W12/10 ,  H04W76/27 ,  H04W80/10 ,  H04W8/08 ,  H04W12/04 ,  H04L29/06 ,  H04W12/00 ,  H04W12/08 ,  H04W12/02 ,  H04W92/10

Abstract: A communication method and a related apparatus, where a base station obtains a security policy, where the security policy includes integrity protection indication information, and where the integrity protection indication information is used to instruct the base station whether to enable integrity protection for a terminal device. When the integrity protection indication information instructs the base station to enable integrity protection for the terminal device, the base station sends a target user plane integrity protection indication information to the terminal device.