Method and apparatus for transmitting control channel in intra-cell carrier aggregation system

A terminal, comprising:

• a transceiver configured to transmit and receive signals;
• and
• at least one processor configured to control:
• receiving data on the S Cell in at least one downlink subframe;
• and
• transmitting, on the PCell in a feedback subframe, a feedback of the data received in the at least one downlink subframe, the feedback subframe being configured as an uplink subframe according to a TDD uplink-downlink (UL-DL) configuration configured for the PCell,
• wherein the at least one downlink subframe is before the feedback subframe by a predetermined number of subframes determined based on the TDD UL-DL configuration configured for the PCell, and
• wherein, if the TDD UL-DL configuration is 1,
• the predetermined number of subframes includes 7 and 6 when the feedback subframe is a subframe 2,
• the predetermined number of subframes includes 6, 5 and 4 when the feedback subframe is a subframe 3,
• the predetermined number of subframes includes 7 and 6 when the feedback subframe is a subframe 7, and the predetermined number of subframes includes 6, 5 and 4 when the feedback subframe is a subframe 8.

A method by a base station connected with a terminal through a primary cell (PCell) of a time division duplex (TDD) scheme and a secondary cell (S Cell) of a frequency division duplex (FDD) scheme, the method comprising:

• transmitting data on the SCell in at least one downlink subframe;
• and
• receiving, on the PCell in a feedback subframe, a feedback of the data transmitted in the at least one downlink subframe, the feedback subframe being configured as an uplink subframe according to a TDD uplink-downlink (UL-DL) configuration configured for the PCell,
• wherein the at least one downlink subframe is before the feedback subframe by a predetermined number of subframes determined based on the TDD UL-DL configuration configured for the PCell, and
• wherein, if the TDD UL-DL configuration is 1,
• the predetermined number of subframes includes 7 and 6 when the feedback subframe is a subframe 2,
• the predetermined number of subframes includes 6, 5 and 4 when the feedback subframe is a subframe 3,
• the predetermined number of subframes includes 7 and 6 when the feedback subframe is a subframe 7, and
• the predetermined number of subframes includes 6, 5 and 4 when the feedback subframe is a subframe 8.

A base station, comprising:

• a transceiver configured to transmit and receive signals;
• and
• at least one processor configured to control:
• transmitting data on the SCell in at least one downlink subframe;
• and
• receiving, on the PCell in a feedback subframe, a feedback of the data transmitted in the at least one downlink subframe, the feedback subframe being configured as an uplink subframe according to a TDD uplink-downlink (UL-DL) configuration configured for the PCell,
• wherein the at least one downlink subframe is before the feedback subframe by a predetermined number of subframes determined based on the TDD UL-DL configuration configured for the P Cell, and
• wherein, if the TDD UL-DL configuration is 1,
• the predetermined number of subframes includes 7 and 6 when the feedback subframe is a subframe 2,
• the predetermined number of subframes includes 6, 5 and 4 when the feedback subframe is a subframe 3,
• the predetermined number of subframes includes 7 and 6 when the feedback subframe is a subframe 7, and
• the predetermined number of subframes includes 6, 5 and 4 when the feedback subframe is a subframe 8.