COMMUNICATION DEVICE AND COMMUNICATION METHOD

    公开(公告)号:US20220319320A1

    公开(公告)日:2022-10-06

    申请号:US17846785

    申请日:2022-06-22

    Abstract: A communication apparatus mounted on a vehicle includes: a camera that captures a still image used for generating a map; a positioning circuit that positions a captured position of the still image; a control circuit that associates position information indicating the captured position with image data of the still image; and a communication circuit that establishes a radio communication with a roadside unit and transmits the image data by radio to the roadside unit, in which the control circuit rearranges an transmission order of the image data to be transmitted by radio to the roadside unit, based on the position information.

    COMMUNICATION DEVICE AND COMMUNICATION METHOD

    公开(公告)号:US20230017996A1

    公开(公告)日:2023-01-19

    申请号:US17950910

    申请日:2022-09-22

    Abstract: A communication apparatus includes: MAC control circuitry, which, in operation, controls transmission and reception of a control frame and a data frame that are used for communication with another communication apparatus; and radio circuitry, which, in operation, performs radio communication of the control frame and the data frame using a transmission antenna and a reception antenna, wherein, when the radio circuitry receives, from the another communication apparatus, an SSW frame including an OCB response subfield among a plurality of the control frames, the MAC control circuitry determines whether to perform data communication between the communication apparatus and the another communication apparatus in accordance with the OCB response subfield.

    COMMUNICATION DEVICE AND COMMUNICATION METHOD

    公开(公告)号:US20230016300A1

    公开(公告)日:2023-01-19

    申请号:US17951831

    申请日:2022-09-23

    Abstract: A communication apparatus includes: control circuitry that controls transmission/reception of a first control frame and a first data frame used for communication with another communication apparatus, and controls transmission/reception of a second control frame and a second data frame used for communication with the another communication apparatus; first radio circuitry that performs radio communication of the first control frame and the first data frame using a first omni-directional antenna; and second radio circuitry that performs radio communication of the second control frame and the second data frame using a second directional antenna. When the first radio circuitry receives, from the another communication apparatus, a WSA frame including information on the radio communication using the second radio circuitry among a plurality of the first control frames, the control circuitry determines not to perform an association procedure between the communication apparatus and the another communication apparatus based on the WSA frame.

    COMMUNICATION DEVICE AND COMMUNICATION METHOD

    公开(公告)号:US20240284156A1

    公开(公告)日:2024-08-22

    申请号:US18291479

    申请日:2022-07-14

    CPC classification number: H04W8/005 H04L1/1607 H04W4/06

    Abstract: The present invention groupcasts a groupcast frame in a short period of time by using millimeter wave communication. A communication device equipped with a MAC control circuit for controlling a procedure for discovering a communication partner device and a procedure for determining the best transmission sector, and also equipped with a wireless circuit for transmitting a unicast frame to the communication partner device by using the best transmission sector, wherein the MAC control circuit controls the wireless circuit so as to start a timer for each discovered communication partner device after the procedure for discovering communication partner devices is completed, and transmit a groupcast frame to communication partner devices for which the timer has not finished by using the best transmission sector upon receiving a groupcast frame transmission request from a higher layer before all timers have finished.

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