Base station, user apparatus, resource assignment method, and resource determination method

A user apparatus, having a function for performing device-to-device communication by radio, configured to communicate with a base station, comprising:

• an information transmission unit configured to transmit, to the base station, service identification information corresponding to a service type of device-to-device communication of the user apparatus;
• an information reception unit configured to receive, from the base station, information indicating resource assignment that is determined based on the service identification information;
• and
• a resource determination unit configured to determine a resource to be used for transmitting a discovery signal in device-to-device communication based on the information indicating the resource assignment.

A resource assignment method executed by a base station configured to communicate with a user apparatus having a function for performing device-to-device communication by radio, comprising:

• a step of transmitting mapping information, to the user apparatus, in which service identification information on device-to-device communication is associated with a service type;
• a step of receiving, from the user apparatus, service identification information corresponding to a service type of the user apparatus;
• and
• a step of determining resource assignment used for device-to-device communication for each service based on the service identification information received from the user apparatus, and transmitting information indicating the resource assignment to the user apparatus.

A resource determination method executed by a user apparatus, having a function for performing device-to-device communication by radio, configured to communicate with a base station, comprising:

• a step of transmitting, to the base station, service identification information corresponding to a service type of device-to-device communication of the user apparatus;
• a step of receiving, from the base station, information indicating resource assignment that is determined based on the service identification information;
• and
• a step of determining a resource to be used for transmitting a discovery signal in device-to-device communication based on the information indicating the resource assignment.