Terminal and communication method

A communication system, comprising:

• a base station;
• a first terminal that communicates with the base station;
• and
• a second terminal that performs inter-terminal communication with the first terminal,
• wherein the first terminal includes:
• a reception section that receives second control information from the base station in a Physical Downlink Control Channel (PDCCH) related to a sidelink (SL) configured for a cell in a specific Physical Uplink Control Channel (PUCCH) group, the second control information indicating a channel for transmitting first control information and data to the second terminal;
• and
• a transmission section that transmits a second response signal to the base station with a PUCCH configured for a specific cell in the specific PUCCH group, the second response signal being based on a first response signal transmitted by the second terminal having received the data, wherein:
• the reception section receives a first higher layer parameter and a second higher layer parameter that are related to the SL, the first higher layer parameter including first configuration information, the second higher layer parameter including the second configuration information,
• the first configuration information indicates a resource in which the PDCCH is configured, and
• the second configuration information indicates a resource in which the PUCCH is configured.

A communication method performed by a terminal, the communication method comprising:

• receiving second control information from a base station in a Physical Downlink Control Channel (PDCCH) related to a sidelink (SL) configured for a cell in a specific Physical Uplink Control Channel (PUCCH) group, the second control information indicating a channel for transmitting first control information and data to another terminal in inter-terminal communication;
• transmitting a second response signal to the base station with a PUCCH configured for a specific cell in the specific PUCCH group, the second response signal being based on a first response signal transmitted by the other terminal having received the data;
• and
• receiving a first higher layer parameter and a second higher layer parameter that are related to the SL, the first higher layer parameter including first configuration information, the second higher layer parameter including the second configuration information,
• wherein the first configuration information indicates a resource in which the PDCCH is configured, and
• wherein the second configuration information indicates a resource in which the PUCCH is configured.