Communication control method, user terminal, and communication apparatus

A user terminal, comprising:

• a receiver configured to:
• receive, from a base station in a serving cell of a first Public Land Mobile Network (PLMN), first information including information of available radio resources for directly receiving, by the user terminal, a discovery signal in a frequency of the serving cell,
• receive, from another base station in another cell having another frequency different from the frequency of the serving cell, second information transmitted by a System Information Block (SIB), wherein the second information indicates available radio resources for directly receiving, by the user terminal, a discovery signal from another user terminal in the other frequency of the other cell of a second PLMN different from the first PLMN, and
• directly receive the discovery signal from the other user terminal existing in the other cell, by using the available radio resources in the second information;
• and
• a transmitter configured to transmit the second information received from the other base station, to the base station in the serving cell.

A processor, communicatively coupled to a memory including a program, wherein the processor is configured to control a user terminal, and to execute the program stored in the memory to perform processes of:

• receiving, from a base station in a serving cell of a first Public Land Mobile Network (PLMN), first information including information of available radio resources for directly receiving, by the user terminal, a discovery signal in a frequency of the serving cell;
• receiving, from another base station in another cell having another frequency different from the frequency of the serving cell, second information transmitted by a System Information Block (SIB), wherein the second information indicates available radio resources for directly receiving, by the user terminal, a discovery signal from another user terminal in the other frequency of the other cell of a second PLMN different from the first PLMN;
• transmitting the second information received from the other base station, to the base station in the serving cell;
• and
• directly receiving the discovery signal from the other user terminal existing in the other cell, on a basis of the second information.