Samsung Electronics Co., Ltd.

Jang-Won Park

Byung-Chan Ahn

Soo-Yeul Oh

Young-Soon Lee

Eun-Jin Lee

Jae-Ho Lee

Il-Jin Youn

Provided is a base station for detecting Denial-of-Service (DoS) attacks in a communication system and a method for controlling the same. The base station includes 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 data to the at least one wireless terminal, based on at least one of feedback information transmitted from the at least one wireless terminal and channel capacity 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 DoS attack, using the calculated ratio.

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

An apparatus and method for uplink scheduling in a broadband wireless communication system are provided, in which channel conditions are divided into at least two areas, an area corresponding to channel information of a CSM mobile station received from the CSM mobile station is determined, resources of a first pilot pattern are allocated to the CSM mobile station, if the channel information belongs to an area with good channel condition, and resources of a second pilot pattern are allocated to the CSM mobile station, if the cannel information belongs to an area with poor channel condition.

Apparatus and method for uplink scheduling in a broadband wireless communication system

An apparatus and method in a broadband wireless communication system are provided. The apparatus includes a Base Station (BS) which includes a manager for increasing a set point associated with a Mobile Station (MS) if an error is detected in a burst received from the MS, a detector for incrementing a counter associated with the MS if a difference, between a maximum Transmission (Tx) power of the MS and a Tx power used by the MS when transmitting the burst in which the error was detected, is less than a difference threshold, and a determining unit for providing control such that a number of slots allocated to the MS decreases if the counter associated with the MS is greater than a counter threshold.

Apparatus and method for determining an uplink transmission format in a broadband wireless communication system

Apparatus and method for guaranteeing a Quality of Service (QoS) traffic rate in a mobile communication system are provided. The scheduling method for guaranteeing a QOS traffic rate in a mobile communication system includes calculating a total sum of traffic rates based on a channel change and a total sum of sustained traffic rates; calculating a weighted traffic rate using the traffic rate based on the channel change and the sustained traffic rate when the sustained traffic rate does not meet the QoS traffic rate; and determining a service priority using the weighted traffic rate. Therefore, the minimum reserved traffic rate and the maximum sustained traffic rate can be assured.

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Yongin-si, South Korea

Jang-Won Park