Method and device for transmitting a feedback signal in a multi-node system

A terminal for transmitting feedback information in a distributed antenna system including a plurality of antenna nodes in a same cell and a base station for controlling the plurality of antenna nodes in the same cell, the terminal comprising:

• a transmitter;
• a receiver;
• and
• a processor coupled to a memory and configured to:
• estimate, for each of the plurality of antenna nodes in the same cell, a reception signal level of a downlink signal;
• select a preferred antenna node among the plurality of antenna nodes in the same cell based on the reception signal level of the downlink signal;
• determine a random access (RA) preamble sequence from one of a plurality of preamble sequence sets,
• wherein each of the plurality of preamble sequence sets is linked to a respective one of the plurality of antenna nodes in the same cell;
• and
• transmit the determined RA preamble sequence to the base station through a physical random access channel (RACH),
• wherein a number of the plurality of antenna nodes in the same cell is 8, and
• wherein a preamble set linked to a nth antenna node of the plurality of antenna nodes in the same cell is defined as preamble sequences having indexes 8n to 8n+7.