Patent ID: 8838159

Claim:
A method of transmitting a reference signal in a multi-node system including a plurality of nodes and a base station for controlling the plurality of nodes, the method comprising: transmitting node information to a user equipment; transmitting the reference signal to the user equipment from at least one node among the plurality of nodes on the basis of the node information, wherein the node information includes information capable of identifying the reference signal transmitted from the at least one node, wherein the node information includes antenna port information or reference signal configuration information used by each of the plurality of nodes, wherein each of the plurality of nodes transmits a different reference signal, wherein the node information is generated by using new seed number independently from a cell identification (ID) such that the node information and the cell ID are independently configured, and wherein a format of node information is different from a format of the cell ID; and receiving feedback information from the user equipment via at least one node among the plurality of nodes, wherein the feedback information includes the antenna port information or the reference signal configuration information.