Directional antenna tracking method and communication device

    公开(公告)号:US10978799B2

    公开(公告)日:2021-04-13

    申请号:US16428175

    申请日:2019-05-31

    Abstract: A directional antenna tracking method includes obtaining first motion feature information of a first device, receiving second motion feature information transmitted from a second device, calculating tracking information of a first directional antenna of the first device with respect to a second directional antenna of the second device based on the first motion feature information and the second motion feature information, and controlling the first directional antenna to move according to the tracking information to face toward the second directional antenna.

    Method and device for secure communication

    公开(公告)号:US10833853B2

    公开(公告)日:2020-11-10

    申请号:US16003978

    申请日:2018-06-08

    Abstract: A secure communication method comprising obtaining a secret code generated in response to a first communication device being paired with a second communication device, obtaining a prestored product key, generating a module key based on the secret code and the product key, randomly generating a session key, obtaining a key sequence number, auto-incrementing the key sequence number, setting a sending sequence number with an initial value of zero, generating a key frame by performing a computation on the session key and a verification authentication code of the session key using the module key, sending a data packet including the key frame, the key sequence number, the sending sequence number, and a data type to the second communication device. The data type indicates that the data packet is a key data packet.

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