Method and device for transmitting/obtaining control information in wireless communication system

A method for transmitting control information on an Enhanced Physical Downlink Control Channel (EPDCCH) at a Base Station (BS) in a wireless communication system, the method comprising:

• determining an index of a start Orthogonal Frequency Division Multiplexing (OFDM) symbol of an EPDCCH in a subframe;
• and
• allocating the EPDCCH to a UE-specific search space of the EPDCCH,
• wherein if the subframe is a subframe 1 or a subframe 6 for Time Division Duplexing (TDD), the index of the starting OFDM symbol is a smaller value between 2 and a higher-layer parameter which indicates the index of the starting OFDM symbol of the EPDCCH.

A User Equipment (UE) for acquiring control information on an Enhanced Physical Downlink Control Channel (EPDCCH) in a wireless communication system, the UE comprising:

• a reception module;
• and
• a processor,
• wherein the processor determines an index of a start Orthogonal Frequency Division Multiplexing (OFDM) symbol of an EPDCCH in a subframe and attempts to perform decoding on a UE-specific search space of the EPDCCH, wherein if the subframe is a subframe 1 or a subframe 6 for Time Division Duplexing (TDD), the index of the starting OFDM symbol is a smaller value between 2 and a higher-layer parameter which indicates the index of the starting OFDM symbol of the EPDCCH.

A Base Station (BS) for transmitting control information on an Enhanced Physical Downlink Control Channel (EPDCCH) in a wireless communication system, the BS comprising:

• a transmission module;
• and
• a processor,
• wherein the processor determines an index of a start Orthogonal Frequency Division Multiplexing (OFDM) symbol of an EPDCCH in a subframe and allocates the EPDCCH to a UE-specific search space of the EPDCCH, wherein if the subframe is a subframe 1 or a subframe 6 for Time Division Duplexing (TDD), the index of the starting OFDM symbol is a smaller value between 2 and a higher-layer parameter which indicates the index of the starting OFDM symbol of the EPDCCH.