Method and apparatus for receiving control information in wireless connection system

A user equipment of receiving control information in a heterogeneous network system including a macro cell and a femto cell, the user equipment comprising:

• an RF (radio frequency) unit;
• and
• a processor configured to:
• receive a first PHICH (physical hybrid-ARQ indicator channel) configuration information on the femto cell from the macro cell,
• perform a handover from the macro cell into the femto cell,
• configure a PHICH interval as a first number of OFDM (orthogonal frequency division multiplexing) symbols in accordance with the first PHICH configuration information after the handover,
• receive a second PHICH configuration information and offset information indicating a timing of applying the second PHICH configuration information from the femto cell through a downlink shared channel (DL-SCH),
• reconfigure the PHICH interval as a second number of the OFDM symbols in accordance with the second PHICH configuration information.

A femto cell transmitting control information in a heterogeneous network system including a macro cell and the femto cell, the femto cell comprising:

• an RF (radio frequency) unit;
• and
• a processor configured to:
• receive downlink channel information including a downlink channel signal measurement value from a user equipment handed over from the macro cell, and
• transmit PHICH (physical hybrid-ARQ indicator channel) configuration information and offset information indicating a timing of applying the second PHICH configuration information to the user equipment through a downlink shared channel (DL-SCH) when the downlink channel signal measurement value is equal to or smaller than a reference value.