公开(公告)号：EP4228202A1

公开(公告)日：2023-08-16

申请号：EP20959157.7

申请日：2020-10-29

申请人： Huawei Technologies Co., Ltd.

发明人： XI, Yan ,  XIONG, Xiaochun

IPC分类号： H04L9/40

摘要： This application provides a man-in-the-middle detection method and apparatus. The method includes: A base station receives, in a first physical frame, a first radio resource control RRC message from user equipment UE; the base station receives a second RRC message from the UE, where the second RRC message includes frame information of a second physical frame, and security protection is performed on the first RRC message and the second RRC message by using an access stratum AS security context established by the UE and the base station; and the base station determines whether the first physical frame matches the second physical frame. According to the man-in-the-middle detection method in embodiments of this application, whether a man-in-the-middle exists in air interface communication is determined by determining whether a physical frame in which the UE sends an uplink message matches a physical frame in which the base station receives the uplink message, to prevent the man-in-the-middle from bypassing detection through a mechanism of the man-in-the-middle and improve a man-in-the-middle detection rate.

公开(公告)号：EP3826352A1

公开(公告)日：2021-05-26

申请号：EP19848585.6

申请日：2019-08-06

申请人： HUAWEI TECHNOLOGIES CO., LTD.

发明人： JIN, Wenjun ,  XIONG, Xiaochun

IPC分类号： H04W24/08

摘要： A cell handover method, an apparatus, and a system are disclosed, to resolve a problem that, in the prior art, a terminal device easily accesses a fake base station when performing a cell handover. In this application, a first base station may send a measurement control message to a terminal device, where the measurement control message includes information about a pilot signal allocated by a second base station to the terminal device. After the first base station receives a measurement response message from the terminal device, where the measurement response message includes signal quality of the pilot signal, and determines that the signal quality of the pilot signal satisfies a handover condition, the first base station performs a cell handover process for the terminal device. The first base station first determines that the signal quality, reported by the terminal device, of the pilot signal satisfies the handover condition, so that the terminal device is effectively prevented from directly accessing a fake base station, and it is also ensured that the terminal device can successfully access the second base station without a call drop.

公开(公告)号：EP3614709A1

公开(公告)日：2020-02-26

申请号：EP17908666.5

申请日：2017-05-04

申请人： Huawei Technologies Co., Ltd.

发明人： XIONG, Xiaochun ,  YIN, Xinxing

IPC分类号： H04W12/04 ,  H04W36/00

摘要： Embodiments of this application provide a key generation method and a related device. The method includes: receiving, by a terminal, a first message sent by a source base station, where the first message includes a key exchange algorithm selected by a target base station and a first public key generated by the target base station; generating, by the terminal, a first shared key based on the key exchange algorithm, the first public key, and a first private key generated by the terminal; and sending, by the terminal, a second message to the target base station, where the second message includes a second public key generated by the terminal. According to the embodiments of this application, a communication latency and network load can be reduced while communication security is ensured.