Wireless communication device, base station, communication system, and communication method

A base station, comprising:

• a control unit configured to:
• acquire determination information, from a plurality of wireless communication devices, to determine a plurality of master devices, wherein
• the plurality of master devices is configured to communicate with the base station,
• the determination information includes information related to received power with the base station, position information of the plurality of wireless communication devices, capability information of the plurality of wireless communication devices, and coverage information indicating whether each wireless communication device of the plurality of wireless communication devices exists within a coverage of the base station, and
• the each wireless communication device of the plurality of wireless communication devices communicates in perform-sidelink communication in a per-vehicle group;
• determine the plurality of master devices based on the determination information, wherein
• the plurality of master devices includes a first master device and a second master device, and
• a priority of communication of the first master device with the base station is higher than a priority of communication of the second master device with the base station;
• and
• transmit notification to the plurality of wireless communication devices of information on the determined plurality of master devices.

A communication system, comprising:

• a plurality of wireless communication devices configured to execute sidelink communication in a per-vehicle group;
• and
• a base station configured to communicate with at least one wireless communication device of the plurality of wireless communication devices,
• wherein the at least one wireless communication device includes a control unit configured to:
• acquire determination information to determine a plurality of master devices, wherein
• the plurality of master devices is further configured to communicate with the base station,
• the determination information includes information related to received power with the base station, position information of the plurality of wireless communication devices, capability information of the plurality of wireless communication devices, and coverage information indicating whether each wireless communication device of the plurality of wireless communication devices exists within a coverage of the base station,
• the plurality of master devices includes a first master device and a second master device, and
• a priority of communication of the first master device with the base station is higher than a priority of communication of the second master device with the base station;
• determine, based on the determination information, whether the at least one wireless communication device is one of the plurality of master devices;
• and
• transmit, based on the determination that the at least one wireless communication device is one of the plurality of master devices, a determination result to at least one of the base station or the plurality of wireless communication devices.

A communication method by a wireless communication device, the communication method comprising:

• controlling the wireless communication device to execute sidelink communication with a plurality of wireless communication devices in a per-vehicle group, wherein the plurality of wireless communication devices includes the wireless communication device;
• acquiring determination information for determining a plurality of master devices, wherein
• the plurality of master devices is configured to communicate with a base station in the sidelink communication,
• the determination information includes information related to received power with the base station, position information of the plurality of wireless communication devices, capability information of the plurality of wireless communication devices, and coverage information indicating whether each wireless communication device of the plurality of wireless communication devices exists within a coverage of the base station,
• the plurality of master devices includes a first master device and a second master device, and
• a priority of communication of the first master device with the base station is higher than a priority of communication of the second master device with the base station is low;
• determining, based on the acquired determination information, whether the wireless communication device is one of the plurality of master devices;
• and
• transmitting, based on the determination that the wireless communication device is one of the plurality of master devices, a determination result to at least one of the base station or the plurality of wireless communication devices.

A communication method, comprising:

• acquiring, from a plurality of wireless communication devices configured to execute sidelink communication in a per-vehicle group, determination information for determining a plurality of master devices, wherein
• the plurality of master devices is configured to communicate with a base station, and
• the determination information includes information corresponding to received power with the base station, position information of the plurality of wireless communication devices, capability information of the plurality of wireless communication devices, and coverage information indicating whether each wireless communication device of the plurality of wireless communication devices exists within a coverage of the base station;
• determining the plurality of master devices based on the determination information, wherein
• the plurality of master devices includes a first master device and a second master device, and
• a priority of communication of the first master device with the base station is higher than a priority of communication of the second master device with the base station;
• and
• transmitting notification to the plurality of wireless communication devices providing notification of information on the determined plurality of master devices.