User terminal, radio base station, and radio communication method

A system comprising:

• a terminal that comprises:
• a transmitter that transmits an uplink signal;
• a receiver that receives a downlink signal;
• and
• a processor that controls communication in the transmitter and in the receiver, wherein the processor performs communication with a first cell and a second cell where a part of symbols on the first cell is configured as uplink and another part of the symbols on the first cell is configured as downlink,
• when a first symbol on the second cell overlaps a second symbol on the first cell, the first symbol is shorter than a subframe, and the second symbol on the first cell is configured as downlink, the processor allows reception on the first symbol on the second cell and does not allow transmission on the first symbol on the second cell,
• when a third symbol on the second cell overlaps a fourth symbol on the first cell, the third symbol is shorter than the subframe, and the fourth symbol on the first cell is configured as uplink, the processor allows transmission on the third symbol on the second cell and does not allow reception on the third symbol on the second cell, and
• when a set of symbols on the second cell overlaps a fifth symbol on the first cell, the set of symbol is shorter than the subframe, and the fifth symbol on the first cell is configured as uplink, the processor allows transmission on the set of symbols on the second cell and does not allow reception on the set of symbols on the second cell, and
• a base station that comprises:
• a receiver that receives the uplink signal on the second cell;
• and
• a transmitter that transmits the downlink signal on the second cell.

A radio communication method for a terminal comprising:

• communicating with a first cell and a second cell where a part of symbols on the first cell is configured as uplink and another part of the symbols on the first cell is configured as downlink,
• when a first symbol on the second cell overlaps a second symbol on the first cell, the first symbol is shorter than a subframe, and the second symbol on the first cell is configured as downlink, allowing reception on the first symbol on the second cell and not allowing transmission on the first symbol on the second cell,
• when a third symbol on the second cell overlaps a fourth symbol on the first cell, the third symbol is shorter than the subframe, and the fourth symbol on the first cell is configured as uplink, allowing transmission on the third symbol on the second cell and not allowing reception on the third symbol on the second cell, and
• when a set of symbols on the second cell overlaps a fifth symbol on the first cell, the set of symbol is shorter than the subframe, and the fifth symbol on the first cell is configured as uplink, allowing transmission on the set of symbols on the second cell and not allowing reception on the set of symbols on the second cell.