Abstract: An operation method of a controller in a transport network supporting communications between an access network and a core network may comprise transmitting a request message for requesting a channel state report to at least one transport node among a plurality of transport nodes included in the transport network; receiving, in response to the request message, a response message including channel state information from the at least one transport node; determining at least one protocol layer to be used in the at least one transport node based on the channel state information; and transmitting a control message including information on the determined at least one protocol layer to the at least one transport node.

Abstract: An operation method of a controller in a transport network supporting communications between an access network and a core network may comprise transmitting a request message for requesting a channel state report to at least one transport node among a plurality of transport nodes included in the transport network; receiving, in response to the request message, a response message including channel state information from the at least one transport node; determining at least one protocol layer to be used in the at least one transport node based on the channel state information; and transmitting a control message including information on the determined at least one protocol layer to the at least one transport node.

Abstract: The present disclosure relates to an automatic inspection apparatus for generator turbines and a system using the same. The automatic inspection apparatus adjusts the height of an arm via a lifter, adjusts a rotating angle relative to an inspection object via a rotator, and adjusts forward or backward movement of a probe relative to the inspection object via an expansion/contraction unit while moving the arm having the probe on a rail in accordance with positions of a turbine to be inspected. Furthermore, a compression unit may be used to control contact pressure of the probe to the inspection object at a desired level to allow the probe to closely contact the inspection object, thereby preventing disturbance due to vibration of the probe. In addition, the automatic inspection apparatus has a simple and lightweight configuration so as to be easily installed or removed in a work site.

Abstract: A frequency control apparatus and method for railway wireless communication are provided. The frequency control apparatus includes a variable frequency processor and a fixed frequency processor. The variable frequency processor selects an available variable frequency and wirelessly receives non-safety-related train running information from a base station at the selected variable frequency. The fixed frequency processor wirelessly receives safety-related train running information at a predetermined fixed frequency.

Abstract: A frequency control apparatus and method for railway wireless communication are provided. The frequency control apparatus includes a variable frequency processor and a fixed frequency processor. The variable frequency processor selects an available variable frequency and wirelessly receives non-safety-related train running information from a base station at the selected variable frequency. The fixed frequency processor wirelessly receives safety-related train running information at a predetermined fixed frequency.

Abstract: Disclosed is an underwater CCD camera for visual testing of a reactor cooling system. The underwater CCD camera includes a CCD camera, a casing having a supporter supporting the CCD camera and a cooling pin on a top surface thereof, a Pb-glass window on a front side of the easing to shield the CCD camera from radiation and to reduce a temperature difference between the interior and exterior of the casing, a sealing O-ring preventing a coolant from being introduced into a gap between the Pb-glass window and the casing, a sealing nut providing a fastening force to bring the Pb-glass window into close contact with the sealing O-ring, a rear cap, a silicon O-ring preventing the coolant from being introduced into a gap between the rear cap and the casing, and a fastening nut providing a fastening force to prevent leakage between a camera cable and the casing.

Abstract: A lawful interception apparatus, a lawful interception target apparatus and a lawful interception system are provided. If a lawful interception target apparatus accesses a new communication network which has no lawful interception authority, the lawful interception apparatus receives intercept activation information from the lawful interception target apparatus through a communication network which has a lawful interception authority. The lawful interception apparatus performs seamless lawful interception on the lawful interception target apparatus by use of the received intercept activation information.

Abstract: Provided are an electronic surveillance system and a method thereof. In the electronic surveillance system that performs electronic surveillance on a subscriber in a communication network, the electronic surveillance system includes: one or more communication service providers that provide retained data, which is information generated while the subscriber uses a communication service; a dedicated storage that stores and manages the retained data provided by the communication service providers; and a law enforcement agency that requests the dedicated storage to send electronic surveillance information on a specific subscriber so as to be provided with the surveillance information when the electronic surveillance information on the specific subscriber is required. Accordingly, retained data, which is subscriber electronic surveillance information is integrally managed and stored in a dedicated storage.

Abstract: The present disclosure relates to an automatic inspection apparatus for generator turbines and a system using the same. The automatic inspection apparatus adjusts the height of an arm via a lifter, adjusts a rotating angle relative to an inspection object via a rotator, and adjusts forward or backward movement of a probe relative to the inspection object via an expansion/contraction unit while moving the arm having the probe on a rail in accordance with positions of a turbine to be inspected. Furthermore, a compression unit may be used to control contact pressure of the probe to the inspection object at a desired level to allow the probe to closely contact the inspection object, thereby preventing disturbance due to vibration of the probe. In addition, the automatic inspection apparatus has a simple and lightweight configuration so as to be easily installed or removed in a work site.

Abstract: Provided is a method for remote power management capable of remotely controlling power consumption. The method for remote power management includes: allowing a power management device to generate power information on the basis of power consumption information collected from at least one electronic apparatus and transmit the generated power information to a user terminal through a wireless communication network; and to control an operation of the at least one electronic apparatus in accordance with a control command transmitted in response to the power information from the user terminal through the wireless communication network.

Abstract: Disclosed is an underwater CCD camera for visual testing of a reactor cooling system. The underwater CCD camera includes a CCD camera, a casing having a supporter supporting the CCD camera and a cooling pin on a top surface thereof, a Pb-glass window on a front side of the easing to shield the CCD camera from radiation and to reduce a temperature difference between the interior and exterior of the casing, a sealing O-ring preventing a coolant from being introduced into a gap between the Pb-glass window and the casing, a sealing nut providing a fastening force to bring the Pb-glass window into close contact with the sealing O-ring, a rear cap, a silicon O-ring preventing the coolant from being introduced into a gap between the rear cap and the casing, and a fastening nut providing a fastening force to prevent leakage between a camera cable and the casing.

Abstract: The present invention relates to a deep packet inspection method and device of a wireless communication system. The deep packet inspection method includes: receiving a first deep packet inspection result for a packet of a terminal from a first subnet before a handover when the handover occurs; receiving a second deep packet inspection result for the packet of the terminal from a second subnet after the handover; and coordinating the first deep packet inspection result and the second deep packet inspection result when the handover occurs.

Abstract: Disclosed is a communication vocoder. An encoder and a decoder in a first format, and a decoder in a second format are formed in the communication vocoder. The encoder in the first format encodes voice signals into voice packets in the first format, and the decoder in the first format decodes the voice packets in the first format into voice signals. When voice packets in the second format are input to the communication vocoder, the decoder in the second format decodes the voice packets in the second format into voice signals. The decoders in the first and second formats are formed as subroutines in the communication vocoder.

Abstract: In a nondestructive testing apparatus for testing normality of a blade root in a steam turbine installed in a nuclear plant or a thermal plant, an ultrasonic probe and an encoder can be mounted at the outside by only removing a casing of the steam turbine, without the necessity of withdrawing a turbine rotor, so that an automatic testing can be performed by rotating the steam turbine. Since the testing result can be digitally stored, reliability of the testing is improved. Furthermore, size of the testing apparatus is highly reduced for a tester to conveniently carry and install the testing apparatus alone. As a result, installation time and the whole testing time can be minimized.

Abstract: In a nondestructive testing apparatus for testing normality of a blade root in a steam turbine installed in a nuclear plant or a thermal plant, an ultrasonic probe and an encoder can be mounted at the outside by only removing a casing of the steam turbine, without the necessity of withdrawing a turbine rotor, so that an automatic testing can be performed by rotating the steam turbine. Since the testing result can be digitally stored, reliability of the testing is improved. Furthermore, size of the testing apparatus is highly reduced for a tester to conveniently carry and install the testing apparatus alone. As a result, installation time and the whole testing time can be minimized.

Abstract: The present invention provides a traceback method including: receiving data including router information according to a path of an attacker; filtering the data to hash the data, and storing the resultant hashed information; determining whether the data is normally received on the basis of the hashed information; and predicting a path loss on the basis of the determination result. Therefore, it is possible to perform an accurate IP traceback using a probabilistic packing marking method and a hash-based traceback method.

Abstract: The present invention relates to a mobile advertising method that performs mobile advertisement using a deep-packet inspection performed in a wireless Internet system and location information. An exemplary embodiment of the present invention includes grasping a purchasing tendency of a subscriber using deep packet inspection of an electronic surveillance system; and providing advertisement for desired goods to the subscriber by connecting the grasped purchasing tendency of the subscriber with a location-based service (LBS). Accordingly, the present invention can contribute to an increase in sales profits of the service provider to reduce the resistance and burden for the installation of the electronic surveillance system, and maximize the advertising effect of the advertiser. Further, the subscriber can receive required information on the basis of the current location.

Abstract: Provided are an electronic surveillance system and a method thereof. In the electronic surveillance system that performs electronic surveillance on a subscriber in a communication network, the electronic surveillance system includes: one or more communication service providers that provide retained data, which is information generated while the subscriber uses a communication service; a dedicated storage that stores and manages the retained data provided by the communication service providers; and a law enforcement agency that requests the dedicated storage to send electronic surveillance information on a specific subscriber so as to be provided with the surveillance information when the electronic surveillance information on the specific subscriber is required. Accordingly, retained data, which is subscriber electronic surveillance information is integrally managed and stored in a dedicated storage.

Abstract: The present invention relates to an electronic surveillance method and system in a wideband wireless access system. If a law enforcement agency system requests electronic surveillance relative to a specified object, an electronic surveillance system first performs an authentication process using a codebook to authorize the electronic surveillance request. As the result of the authentication process, if it is judged that the electronic surveillance request of the law enforcement agency system is legal, the electronic surveillance system issues an encryption key required for encrypting communication contents with a law enforcement agency and electronic surveillance information. Thereafter, communication and message transmission/reception between the electronic surveillance system and the law enforcement agency system are encrypted and decoded using the encryption key.

Abstract: The LSF quantizer for a wideband speech coder comprises a subtracter for receiving an input LSF coefficient vector and removing a DC component from it; a memory-based vector quantizer and a memoryless vector quantizer for respectively receiving the DC-component-removed LSF coefficient vector and independently quantizing the same; a switch for receiving quantized vectors respectively quantized by the memory-based vector quantizer and the memoryless vector quantizer, selecting a quantized vector that has less quantized error that is a difference between the received quantized vector and the input LSF coefficent vector from among the received quantized vectors, and outputting the same; and an adder for adding the quantized vector selected by the switch to the DC component of the LSF coefficient vector.