Method and apparatus for receiving signal in multi-node system

1. A method of receiving a signal of a user equipment in a multi-node system including a plurality of nodes and a base station for controlling the plurality of nodes, the method comprising:

receiving a reference parameter from the base station;

receiving a node-specific signal from at least one node among the plurality of nodes; and

decoding the node-specific signal,

wherein a virtual cell parameter required for decoding of the node-specific signal is determined based on the reference parameter, and

wherein the node-specific signal is decoded b using each of candidates of the virtual cell parameter which is dependent on the reference parameter.

2. The method of claim 1 , wherein the node-specific signal is a channel status information reference signal (CSI-RS) for measuring a channel state for the at least one node and the base station.

3. The method of claim 2 ,

wherein the virtual cell parameter includes a CSI-RS configuration number and a CSI-RS subframe configuration number of the CSI-RS, and

wherein the CSI-RS configuration number indicates a location in a subframe of a resource element to which the CSI-RS is mapped, and the CSI-RS subframe configuration number indicates a subframe in which the CSI-RS is transmitted.

4. The method of claim 3 , wherein a CSI-RS subframe configuration number of the at least one node is a fixed value which is different by a specific offset from a CSI-RS subframe configuration number of the base station, and the CSI-RS configuration number of the at least one node is a value increased from the CSI-RS configuration number of the base station on the basis of an index of the at least one node.

5. The method of claim 4 , wherein a CSI-RS periodicity of the at least one node is equal to a CST-RS periodicity of the base station.

6. The method of claim 3 , wherein a CSI-RS configuration number of the at least one node is equal to a CSI-RS configuration number of the base station, and a CSI-RS subframe configuration number of the at least one node is a value increased based on an index of the at least one node from a CSI-RS subframe configuration number of the base station.

7. The method of claim 6 , wherein a CSI-RS periodicity of the at least one node is equal to a CSI-RS periodicity of the base station.

8. The method of claim 6 , wherein a CSI-RS periodicity of the at least one node is a multiple of a CSI-RS periodicity of the base station.

9. The method of claim 1 , wherein if the node-specific signal is a CSI-RS, an antenna port number of the CSI-RS is used by increasing the base station's antenna port number included in the reference parameter on the basis of an index of the at least one node.

10. The method of claim 1 ,

wherein the virtual cell parameter includes a virtual cell identifier (ID) used by the at least one node, and

wherein the virtual cell ID is partially identical to a mother cell ID used by the base station.

11. An apparatus for receiving a signal, the apparatus comprising:

a radio frequency (RF) unit comprising one or more ante orts contoured to receive a radio signal; and

a processor coupled to the RF unit,

wherein the processor is configured to process the radio signal received from a base station and from at least one node among a plurality of nodes controlled by the base station,

wherein the processor receives a reference parameter from the base station, receives a node-specific signal from the at least one node among the plurality of nodes controlled by the base station, and decodes the node-specific signal,

wherein a virtual cell parameter required for decoding of the node-specific signal is determined based on the reference parameter, and

wherein the node-specific signal is decoded by using each of candidates of the virtual cell parameter which is dependent on the reference parameter.