Abstract: Provided are an apparatus and method for checking Personal Computer (PC) security. The apparatus includes a check module for checking a security configuration of a PC on the basis of a check policy received from a security check server and outputting check results, and a control module for changing the security configuration of the PC on the basis of a control policy received from the security check server and the check results received from the check module. According to the apparatus, a security check agent installed in each PC performs security check and changes a security configuration according to a control policy, such that the security configurations of PCs in a network can be managed collectively.

Abstract: The conventional decision feedback equalizer has a drawback that can't decide symbols correctly because a simple slicer is used as a symbol detector. A decision feedback equalizer as a symbol detector uses a Trellis Coded Modulation (TCM) decoder whose Trace Back depth is 1 (TBD=1), to thereby decide symbols correctly without decoding delay.

Abstract: Provided are an apparatus and method for generating a noise adaptive acoustic model including a noise adaptive discriminative adaptation method. The method includes: generating a baseline model parameter from large-capacity speech training data including various noise environments; and receiving the generated baseline model parameter and applying a discriminative adaptation method to the generated results to generate an migrated acoustic model parameter suitable for an actually applied environment.

Abstract: Provided are a method for measuring a variable bandwidth wireless channel, and a transmitter and a receiver therefor. The transmitter, includes: a pre-processing unit for performing variable over-sampling and band-limited filtering on an original sequence for measuring the wireless channel according to a pre-determined digital-to-analog (D/A) operation speed and measurement bandwidth, and creating and storing a probing sequence whose frequency is up-converted into a fixed transmitting intermediate frequency; and a real-time processing unit for transmitting a probing signal that the stored probing sequence is converted according to the D/A operation speed to the wireless channel.

Abstract: A method of relaying a base station that operates as a relay link in order for a first base station to communicate with a second base station that is connected to backhaul includes: forming, by the first base station, a relay station with the second base station; and starting, by the first base station, a relay mode.

Abstract: A node in a wireless network system determines transmission power by performing transmission power control only on a plurality of data subcarriers, other than a plurality of pilot subcarriers, of a PDU slot or ACK slot to be transmitted, and then transmits the data subcarriers of the PDU slot or ACK slot at the determined transmission power and transmits the pilot subcarriers of the PDU slot or ACK slot at a fixed power level. Accordingly, neighboring nodes determine whether or not a channel of the PDU slot or ACK slot is sensed by using the pilot subcarriers of the PDU slot or ACK slot.

Abstract: Provided are a coordinated multipoint transmission and reception method and a coordinated multipoint transmission and reception system for performing the same. In the coordinated multipoint transmission and reception method, a first point and a second point participating in the coordinated multipoint transmission exchange resource allocation information for coordinated multipoint transmission, allocate resources for coordinated multipoint transmission not to overlap each other based on the exchanged resource allocation information, and perform the coordinated multipoint transmission using the allocated resources. Accordingly, use efficiency of radio resources can be improved and embodying complexity can be reduced.

Abstract: Provided are a micro-electromechanical systems (MEMS) microphone and a method of manufacturing the same. A manufacturing process is simplified compared to a conventional art using both upper and lower substrate processes. Since defects which may occur during manufacturing are reduced due to the simplified manufacturing process, the manufacturing throughput is improved, and since durability of the MEMS microphone is improved, system stability against the external environment is improved.

Abstract: The present invention relates to a general active array antenna apparatus capable of environmentally and temporally controlling radio frequency (RF) polarization resource necessary for wireless communication in order to improve communication quality and increase communication capacity. The antenna according to the present invention has a form of an active array antenna element, wherein each active array antenna element has a structure in which it may generate orthogonal dual polarizations and includes two input terminals and output terminals. An end orthogonal dual polarization antenna is connected to a polarization control apparatus that may process analog or digital signals, and the polarization control apparatus is controlled by or communicate with an antenna main controlling apparatus performing a polarization control algorithm. Ultimately, an object of this antenna apparatus is to improve communication quality and increase communication capacity.

Abstract: In a method for a terminal to measure a location by using a public safety monitoring system, when a public safety mode available for tracking a location while a terminal is turned off is set, the terminal acquires location measurement information and transmits it to the public safety monitoring system. In a method for measuring a location of a terminal to which plural stages of public safety modes are set, when a stage for performing a location measurement process is set, the terminal acquires location measurement information, transmits location measurement information to the public safety monitoring system, and enters the next stage when the public safety mode is not cancelled after a predetermined time.

Abstract: Disclosed are an apparatus and a method for transmitting/receiving data while providing power saving efficiency of a terminal, for example, a station (hereinafter, referred to as ‘STAS) in a communication system providing services to multi users in a multi-input multi-output (hereinafter, referred to as ‘MIMO’) scheme. The apparatus for transmitting data includes: a receiving unit configured to receive an uplink frame from a plurality of terminals by a multi user-multiple-input multiple-output (MIMO) scheme; a generating unit configured to generate a packet including support information on a multi user-power saving scheme with the terminals; a buffering unit configured to buffer data corresponding to the terminals; and a transmitting unit configured to transmit a downlink frame including the generated packet and the buffered data to the terminals by the multi user-MIMO scheme.

Abstract: The present invention provides a terminal, apparatus and method for providing a customized auto-valet parking service. The server device includes a service registration management unit for receiving auto-valet parking profile information that includes information about one or more of a user, a vehicle, and a mobile terminal, and a parking map management unit for generating customized parking slots suitable for the user using the auto-valet parking profile information, and providing a parking area map, which includes information about the customized parking slots, to the mobile terminal. The parking map management unit receives information about a final slot selected by the user from among the customized parking slots via the mobile terminal, and provides a route to the final slot.

Abstract: An apparatus and method are provided, which predict total nitrogen using general water quality data measured in real time. The total nitrogen prediction apparatus may include a regression model selection unit to select a regression model comprising general data of at least one water quality based on a correlation coefficient of the general data of at least one water quality, a quality-of-fit evaluation unit to evaluate quality of fit of the selected regression model, a regression model change unit to determine whether to change the regression model based on the quality of fit and change the regression model according to the determination result, and a total nitrogen prediction unit to predict total nitrogen of a body of water based on the regression model.

Abstract: Provided are a transmission/receiving apparatus and method of switching a transmission antenna in a Transmission Switched Diversity (TSD) system.

Abstract: A method for controlling quality of service (QoS) in a mobile communication system includes configuring a service model to operate radio resources, based on an application to provide a requested service from a subscriber terminal; forming a QoS profile using the service model; allocating the radio resources for each requested services in accordance with the QoS; providing information on the allocated radio resources to the application; monitoring a condition of the allocated radio resource; and controlling the QoS by reflecting information obtained from the monitored condition.

Abstract: Provided is a measurement device. The measurement device includes a sensor, a wavelength-tunable light source, an additional light source, a coupler, and an optical power measurer. The sensor accepts a sample. The wavelength-tunable light source irradiates wavelength-tunable light to detect a reaction of the sensor. The additional light source irradiates wavelength-fixed light to detect an initial time of the reaction. The coupler combines the wavelength-tunable light source and the additional light source and irradiates the combined input light on the sensor. The optical power measurer detects the reaction of the sensor from an output light transmitted through or reflected by the sensor.

Abstract: A method for reducing power consumption in an Ethernet switch is provided. The method includes: checking a state of packet data input through each of connection ports; detecting a connection port which has a packet rate lower than a predetermined reference value based on a result of the checking; and generating a data transfer control frame with respect to the connection port having the low packet rate and transmitting the generated data transfer control frame to an Ethernet apparatus connected to the corresponding connection port. Accordingly, a transmission line between the Ethernet switch and an Ethernet apparatus having the low to transmission rate is maintained in a low-power state, thereby reducing energy consumption in both Ethernet apparatuses.

Abstract: There are provided a control channel managing apparatus of a base station, a control channel searching apparatus of a user equipment (UE) and a control channel allocating method in a mobile communication system. When an aggregation level is high and a plurality of UEs having the same starting address of a control channel search space are scheduled in a corresponding subframe, control information with respect to conflicting UEs which have lower priorities in terms of allocation of control information can be transmitted through the conflicting UE space. Hence, more control information can be transmitted and the number of available UEs corresponding to the control information increases, and thus an improvement in the performance of the entire network can be achieved.

Abstract: Provided is a method of performing a routing and allocating a resource in a wireless sensor network. The method includes electing one or more cluster heads, each representing each of one or more clusters comprised of a plurality of sensor nodes, selecting a routing path between the cluster heads and the plurality of sensor nodes, selecting a frame length based on elements and distribution methods of the wireless sensor network and the routing path, forming a time slot resource allocation table for communication between the cluster heads, and exchanging the time slot resource allocation table between the cluster heads separated by one hop. The present invention can enhance the reliability of the wireless sensor network and QoS by effectively performing routing and allocating resources in such a manner that various data requirements can be satisfied.

Abstract: A voltage-controlled oscillator robust against power supply includes: a regulating unit configured to maintain a virtual power supply of a VCO core circuit in a stable condition with regard to a reference voltage; and a power supply removal unit including second transistors configured to correspond to respective first transistors of the regulating unit, the power supply removal unit being configured to remove power noise of the virtual power supply by using negative feedback through a closed-circuit loop formed by each of the first and second transistors.