Abstract: A communication unit includes: a plurality of wireless communication units configured to perform wireless communication with another communication device; and a control unit configured to estimate a relative position of the other communication device relative to the communication unit, wherein the control unit estimates the relative position of the other communication device on the basis of a plurality of distance measurement values indicating a distance between each of the plurality of wireless communication units and the other communication device obtained by each of the plurality of wireless communication units performing wireless communication with the other communication device, and a position characteristic including a position of each of the plurality of wireless communication units in the communication unit.

Abstract: A master communication device causes a slave communication device connected to the master communication device to perform a distance measurement communication for measuring a distance between a terminal and a vehicle that wirelessly communicates with the terminal. The master communication device notifies a controller connected to the master communication device of a first result of the distance measurement communication performed by the slave communication device. The master communication device further notifies the controller of a second result of the distance measurement communication performed by the master communication device. The vehicle is permitted to be actuated in response to any one of the first result or the second result indicating that the distance is valid.

Abstract: A control device comprising, a control section configured to control an authentication process of performing a process related to device authentication together with at least one communication device on a basis of information included in a signal received through wireless communication with the communication device, wherein the control section performs control in such a manner that a signal including authentication information that is information to be used for the authentication process is transmitted to the communication device through the wireless communication, the authentication information varying depending on signal types, which are types of roles of signals to be transmitted to the communication device in the authentication process.

Abstract: A control device controls an authentication process related to device authentication together with at least one communication device on a basis of information included in a signal received through wireless communication with the communication device. The control device performs the control in such a manner that authentication information is changed for each process group in which the authentication process is repeated more than once. Signals transmitted or received in the authentication process include a trigger signal, a request signal, and a response signal. The control device executes the process group in which the authentication process is repeated more than once for the trigger signal, the request signal, and the response signal, and changes the authentication information to be used for each of the trigger signal, the request signal, and the response signal each time the process group is executed.

Abstract: A communication system that performs first communication and second communication, which differs from the first communication, through wireless connection between a terminal and a communication peer, is provided. The communication system includes communication devices arranged in the communication peer. At least one of the communication devices performs the second communication. The communication devices include a first communication device and a second communication device, which differs from the first communication device. The first communication device is connected to a controller that controls the communication devices, and the second communication device is connected to the first communication device.

Abstract: Provided is a communication system including: a first device configured to transmit encrypted information that is encrypted by using a first encryption key; and a second device configured to execute a predetermined process based on the encrypted information obtained from the first device, and a second encryption key that is common to the first encryption key. The first device includes a first change section configured to change the first encryption key in the case where a first condition is satisfied. The second device includes a second change section configured to change the second encryption key in the case where a second condition is satisfied, the second condition being common to the first condition.

Abstract: An object of the present invention is to provide a new and improved technology capable of improving the accuracy of processing in accordance with distance measurement results between each of at least two communication devices and a terminal. Provided is a control device including: an information acquisition unit configured to acquire first information associating a first distance measurement result between a terminal and a first communication device and first identification information of the first communication device, from the first communication device, and to acquire second information associating a second distance measurement result between the terminal and a second communication device and second identification information of the second communication device, from the second communication device.

Abstract: A control device controls an authentication process related to device authentication together with at least one communication device on a basis of information included in a signal received through wireless communication with the communication device. The control device performs the control in such a manner that authentication information is changed for each process group in which the authentication process is repeated more than once. Signals transmitted or received in the authentication process include a trigger signal, a request signal, and a response signal. The control device executes the process group in which the authentication process is repeated more than once for the trigger signal, the request signal, and the response signal, and changes the authentication information to be used for each of the trigger signal, the request signal, and the response signal each time the process group is executed.

Abstract: There is provided a communication device comprising: a BLE communication section configured to perform BLE communication with another communication device different from the communication device, the BLE communication being wireless communication conforming to BLE communication standards; a UWB communication section configured to perform UWB communication with the another communication device, the UWB communication being wireless communication conforming to UWB communication standards; and a control section configured to control the BLE communication of the BLE communication section and the UWB communication of the UWB communication section, wherein the control section performs control to start the UWB communication based on a response signal transmitted by one of the BLE communication section and the another communication device as a response to a request signal transmitted by other one of the BLE communication section and the another communication device during the BLE communication.

Abstract: A control device including a control section configured to cause a ranging process of measuring a distance between communication devices to be executed a designated number of times, and control a subsequent process that is a process of using a ranging value that satisfies a designated allowable value, on a basis of whether or not at least any of a plurality of ranging values that have been acquired satisfies the designated allowable value. The control section controls start of the subsequent process when the ranging value that satisfies the designated allowable value is acquired.

Abstract: A control device comprising, a control section configured to control an authentication process of performing a process related to device authentication together with at least one communication device on a basis of information included in a signal received through wireless communication with the communication device, wherein the control section performs control in such a manner that a signal including authentication information that is information to be used for the authentication process is transmitted to the communication device through the wireless communication, the authentication information varying depending on signal types, which are types of roles of signals to be transmitted to the communication device in the authentication process.

Abstract: [Object] To provide a novel and improved communication system and communication device that make it possible to reduce an amount of time from when communication with an external device is completed to when communication data corresponding to a communication result is output to another device. [Solution] Provided is a communication system including: a communication device configured to transmit a selection solution that is selected depending on a result of first communication with an external device; and a control device configured to receive the selection solution from the communication device through second communication between the communication device and a communication partner that is different from the external device serving as a communication partner in the first communication.

Abstract: An object of the present invention is to provide a control device and control method that make it possible to perform an inter-device authentication process more certainly and improve security. Provided is a control device including: a control section configured to control an authentication process of performing a process related to device authentication together with at least one communication device on a basis of information included in a signal received through wireless communication with the communication device. The control section performs control in such a manner that authentication information is changed for each process group in which the authentication process is repeated more than once, the authentication information being information to be used for the authentication process.

Abstract: A control device comprising, a control section configured to control an authentication process of performing a process related to device authentication together with at least one communication device on a basis of information included in a signal received through wireless communication with the communication device, wherein the control section performs control in such a manner that a signal including authentication information that is information to be used for the authentication process is transmitted to the communication device through the wireless communication, the authentication information varying depending on signal types, which are types of roles of signals to be transmitted to the communication device in the authentication process.

Abstract: Provided is a communication system including: a first device configured to transmit encrypted information that is encrypted by using a first encryption key; and a second device configured to execute a predetermined process based on the encrypted information obtained from the first device, and a second encryption key that is common to the first encryption key. The first device includes a first change section configured to change the first encryption key in the case where a first condition is satisfied. The second device includes a second change section configured to change the second encryption key in the case where a second condition is satisfied, the second condition being common to the first condition.

Abstract: There is provided an antenna device comprising: a pattern antenna formed on a substrate; and a metal element arranged on the same substrate as the pattern antenna, wherein the metal element is arranged such that a longitudinal direction of the metal element is vertical with respect to the substrate near an area surface in which a current flows in the pattern antenna.

Abstract: There is provided an antenna device comprising: a chip antenna that is disposed on a substrate; and a metal element that is disposed above or below the chip antenna in a direction orthogonal to a plane of the substrate.

Abstract: There is provided an antenna device comprising: a chip antenna arranged on a substrate; and a metal element arranged on the same substrate as the chip antenna, wherein the metal element is arranged such that a longitudinal direction of the metal element is vertical with respect to the substrate in a direction in which a current flows in the chip antenna.

Abstract: A control device and control method prevent an unnecessary authentication process from being executed. The control device includes a control section configured to perform an authentication process of authenticating another device by using information obtained through communication with the other device. In the case where a predetermined condition is satisfied, the control section performs control in such a manner that the authentication process is not performed.

Abstract: [Object] To provide a communication system that makes it possible to improve security. [Solution] Provided is a communication system including: a first device configured to transmit encrypted information that is encrypted by using a first encryption key; and a second device configured to execute a predetermined process based on the encrypted information obtained from the first device, and a second encryption key that is common to the first encryption key. The first device includes a first change section configured to change the first encryption key in the case where a first condition is satisfied. The second device includes a second change section configured to change the second encryption key in the case where a second condition is satisfied, the second condition being common to the first condition.