METHOD BY WHICH USER TERMINAL TRANSMITS SIGNAL IN WIRELESS COMMUNICATION SYSTEM, AND USER TERMINAL THEREFOR

    公开(公告)号:US20220345980A1

    公开(公告)日:2022-10-27

    申请号:US17763898

    申请日:2019-10-16

    Abstract: A method by which a first user terminal transmits a signal in a wireless communication system is disclosed. The method can comprise: monitoring a message related to the mobility of one or more user terminals; transmitting, to a second user terminal selected from among the one or more user terminals, a message for requesting to join a cluster to which the first user terminal belongs; receiving, from the second user terminal, a message for acknowledging joining of the cluster; and transmitting a message related to the mobility of the cluster. In addition, the second user terminal can be selected on the basis of comparison between the mobility of the cluster and the mobility of the second user terminal.

    METHOD AND APPARATUS FOR V2X COMMUNICATION

    公开(公告)号:US20210360571A1

    公开(公告)日:2021-11-18

    申请号:US17273976

    申请日:2018-09-07

    Abstract: Disclosed is a method of acquiring position information of a vehicle by a V2X communication device of a vehicle through V2I communication. Specifically, the method of acquiring position information of the vehicle includes receiving a first V2I message including position information, transmission power information, and coverage information of a first road side unit (RSU) from the first RSU; acquiring reception power of the first V2I message; and acquiring region information of the vehicle based on the reception power and the coverage information, wherein the region information indicates based on (1) the vehicle being located within the coverage of the first RSU or (2) a specific region within the coverage of the first RSU.

    V2X COMMUNICATION DEVICE AND GEO-NETWORKING TRANSMISSION METHOD

    公开(公告)号:US20210153099A1

    公开(公告)日:2021-05-20

    申请号:US16637655

    申请日:2017-08-09

    Abstract: A geo-networking transmission method of a V2X communication apparatus is disclosed. The geo-networking transmission method according to an embodiment of the present disclosure includes configuring location information, wherein the location information includes information on a V2X communication apparatus executing a geo-networking protocol, selecting a forwarder candidate among neighboring V2X communication apparatuses included in the location table, determining a forwarder based on a distance between the forwarder candidate and a destination, and setting an address of the determined forwarder as a link layer address of a next hop, and transmitting a geo-networking packet based on the link layer address.

    APPARATUS AND METHOD FOR V2X COMMUNICATION

    公开(公告)号:US20210067926A1

    公开(公告)日:2021-03-04

    申请号:US16962214

    申请日:2018-06-26

    Abstract: Disclosed herein is a method of transmitting a collective perception message (CPM) at a vehicle-to-everything (V2X) communication apparatus of a vehicle. A method of transmitting V2X message of a vehicle includes generating a collective perception (CP) message including information on a plurality of objects detected by the vehicle, determining whether to fragment the CP message depending on whether a size of the CP message is greater than a predefined size, fragmenting the CP message based on the plurality of detected objects, upon determining that the CP message is fragmented, and transmitting the fragmented CP messages. Each of the fragmented CP messages comprises at least one of header information, information on the vehicle or sensor information used to detect the plurality of objects, which is included in the CP message.

    V2X COMMUNICATION DEVICE AND SECURED COMMUNICATION METHOD THEREFOR

    公开(公告)号:US20200336908A1

    公开(公告)日:2020-10-22

    申请号:US16956837

    申请日:2017-12-21

    Abstract: A secured communication method for a V2X communication device is disclosed. The secured communication method for a V2X communication device comprises the steps of; receiving at least one message on the basis of V2X communication; extracting adaptive certificate pre-distribution (ACPD) target information when the at least one message includes the ACPD target information; pre-authenticating at least one short-term certificate acquired from the ACPD target information; collecting at least one pre-authenticated short-term certificate to be broadcasted at a specific predicted time at a specific predicted location; and broadcasting an ACPD group (ACPDG) message including the collected at least one pre-authenticated short-term certificate at the specific predicted location at the specific predicted time.

    V2X COMMUNICATION DEVICE AND METHOD FOR INSPECTING FORGERY/FALSIFICATION OF KEY THEREOF

    公开(公告)号:US20200228988A1

    公开(公告)日:2020-07-16

    申请号:US16651313

    申请日:2017-09-29

    Abstract: Disclosed is a method for inspecting the forgery/falsification of a private key of a V2X communication device. A first PKM random number message including information on an encrypted random number may be received from an external V2X communication device; the encrypted random number may be decrypted using a private key of a V2X communication device; the decrypted random number may be re-encrypted using a public key of the external V2X communication device; a second PKM random number message including information on the re-encrypted random number may be transmitted to the external V2X communication device; and a PKM result message including information on the result of a forgery/falsification inspection of the private key of the V2X communication device may be received from the external V2X communication device.

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