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公开(公告)号：US09960880B2
公开(公告)日：2018-05-01
申请号：US15712581
申请日：2017-09-22
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huiming Wang , Feng Liu , Rong Wu
CPC classification number: H04K3/825 , H04B7/0617 , H04K3/28 , H04L9/001 , H04L25/0202 , H04L25/03343 , H04L63/1475 , H04W12/02
Abstract: The present disclosure discloses a signal sending method and device. The method includes: receiving, by a base station, an uplink pilot signal sent by authorized user equipment, and determining a direction vector parameter and a first channel fading parameter of a channel calculating, according to the direction vector parameter and the first channel fading parameter, a first signal beamformer parameter, determining a transmission area of an artificial noise signal according to the direction vector parameter, and calculating a second signal beamformer parameter; and processing a to-be-transmitted signal by using the first signal beamformer parameter and the second signal beamformer parameter, and transmitting the processed signal. In this way, in a non-target direction, energy leakage of the secrecy signal to the authorized user equipment is relatively small, and transmitted artificial noise signals are concentrated in an area with a relatively high secrecy signal leakage risk.
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公开(公告)号：US20230319557A1
公开(公告)日：2023-10-05
申请号：US18331948
申请日：2023-06-09
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Peng Liu , Huiming Wang , Xuan Wei , Jianjun Wu
IPC: H04W12/0431 , H04L5/00 , H04W12/037
CPC classification number: H04W12/0431 , H04L5/0048 , H04W12/037
Abstract: This disclosure provides an authentication method and a related apparatus. The method includes: A terminal device receives a first received encrypted reference signal corresponding to a first sent encrypted reference signal that is generated by an access network device using a pilot key and a first reference signal and transmitted through a channel; the terminal device performs channel estimation by using the first received encrypted reference signal and the first sent encrypted reference signal, to obtain downlink channel state information; and the terminal device sends first information to the access network device, where the first information includes the downlink channel state information, to effectively defend against man-in-the-middle attacks.
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公开(公告)号：US20230308173A1
公开(公告)日：2023-09-28
申请号：US18327631
申请日：2023-06-01
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Peng Liu , Huiming Wang
CPC classification number: H04B7/1855 , H04B7/01 , H04J13/0029
Abstract: An information transmission method and apparatus are provided. The method includes: A first communication apparatus determines feature information of a target channel and first common delay information, and determines scrambling information based on the feature information of the target channel. The first communication apparatus processes the first common delay information based on the scrambling information, to obtain second common delay information. The first communication apparatus sends the second common delay information through the target channel. A second communication apparatus receives the second common delay information through the target channel, and determines the feature information of the target channel. The second communication apparatus determines descrambling information based on information of the target channel, and further processes the second common delay information based on the descrambling information to obtain the first common delay information. In this solution, both the first communication apparatus and the second communication apparatus respectively determine corresponding scrambling information and descrambling information based on feature information of a transmission channel of common delay information, to ensure that the second communication apparatus obtains correct first common delay information.
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