Base station for detecting denial-of-service attacks in communication system and method for controlling the same

A base station in a communication system, comprising:

• a first estimator for estimating, for a predetermined time, a reception rate of data that is received at the base station from a communication network to be transmitted to at least one wireless terminal;
• a second estimator for estimating, for a predetermined time, a bandwidth allocated for transmission of the data to the at least one wireless terminal, based on at least one of feedback information transmitted from the at least one wireless terminal, channel capacity of the base station, and a gain information mapping function that reflects bandwidth characteristics of the base station;
• and
• a controller for calculating a ratio of the bandwidth to the reception rate for the at least one wireless terminal, and determining whether there is a Denial-of-Service (DoS) attack, using the calculated ratio,
• wherein the gain information mapping function is provided to calculate a gain using at least one of multi-antenna configuration information of the base station, service category type information and Modulation and Coding Scheduling (MCS) level information determined based on the feedback information.