User equipment, wireless base station, and wireless communication method using multiple Transmission Time Interval (TTI) lengths

A terminal comprising:

• a receiver that receives downlink control information and a Physical Downlink Shared Channel (PDSCH) by using a plurality of transmission time intervals (TTIs) contained in one subframe;
• and
• a processor that controls to receive the PDSCH through at least one of the plurality of TTIs based on the downlink control information,
• wherein the receiver receives a second downlink control channel including the downlink control information through a second TTI among the plurality of TTIs in the subframe, following a first TTI among the plurality of TTIs where a first downlink control channel is allocated,
• wherein the second TTI has a length that is different from a length of the first TTI,
• wherein the length of the first TTI is shorter than 1 ms,
• wherein a number of TTIs in the subframe is based on a subcarrier spacing, and
• wherein
• the processor informs of a capability for reception of the downlink control information and the PDSCH by using the plurality of TTIs,
• the receiver receives information about the plurality of TTIs by higher layer signaling, and
• the processor controls, based on the information, to receive the downlink control information and the PDSCH.