Node unit of distributed antenna system

A node unit of a distributed antenna system, the node unit comprising:

• a service antenna configured to receive and output a first uplink signal from a mobile communication terminal;
• and
• a controller configured to analyze the first uplink signal, generate first state information, analyze the first state information, and determine whether to transmit the first uplink signal.

A distributed antenna system comprising:

• n remote units each configured to generate state information regarding an uplink signal received from a mobile communication terminal and to transmit the state information and the uplink signal, where n is a natural number greater than or equal to 2;
• and
• a master unit configured to analyze the state information received from each of the n remote units and to determine whether to transmit the uplink signal to a base station connected to the master unit.