Method and device for transmitting and receiving reference signals in accordance with mimo operation mode

An apparatus for receiving control information and generating a reference signal based on an MIMO operation mode, the apparatus comprising:

• a receiving unit to receive, in a user equipment, control information from a base station;
• a cyclic shift parameter calculator to calculate a cyclic shift parameter from a control signal received by the receiving unit;
• a cyclic shift and orthogonality allocation rule selecting unit to select a cyclic shift and orthogonality allocation rule by referring to a parameter that is associated with the MIMO operation mode of the user equipment and is transferred from an upper layer and the cyclic shift parameter;
• a reference signal generating unit to set a cyclic shift value and an OCC value for each layer using the selected allocation rule and the received cyclic shift parameter, and to generate a reference signal using the set values;
• and
• a transmitting unit to transmit the generated reference signal to the base station.

An apparatus for transmitting control information, the apparatus comprising:

• a user equipment configuration status determining unit to determine an MIMO environment of a user equipment;
• a cyclic shift and orthogonality allocation rule selecting unit to select a cyclic shift and rthogonality allocation rule appropriate for the determined MIMO environment by referring to a parameter that a base station transfers to the user equipment in an upper layer with respect to the MIMO environment;
• a signal generating unit to generate a signal to transmit control information including a cyclic shift parameter determined based on the selected allocation rule to the user equipment;
• and
• a transceiving unit to transmit the signal to the user equipment.