Abstract: Provided is a sector discovery apparatus and method, the method including setting, by an AP in a WLAN system, an omni-beacon interval for transmitting an omnidirectional beacon and sector beacon intervals for transmitting a sector beacon with respect to one of a plurality of sectors which are spatially divided, transmitting the sector beacon to a current sector among the plurality of sectors, transmitting, to the current sector, a transmission frame indicating sectorized transmission or a transmission frame indicating omnidirectional transmission, in a sector interval between the sector beacon intervals, and receiving, from a terminal located in the current sector, a response frame indicating an association performed by receiving the transmission frame indicating the sectorized transmission.

Abstract: An interference alignment (AI) method for an uplink in a wireless local area network (WLAN) system, an access point (AP) and a user terminal for performing the same, and the AP that may select an interference space, broadcast information on the selected interference space, select a user terminal to be assigned a data transmission opportunity based on leakage of interference (LIF) information received from at least one user terminal, receive data from the user terminal, and decode the data using a minimum square error (MMSE) based receiving filter.

Abstract: The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.

Abstract: A refresh control device, and a memory device may be provided. The latch controller may include a first oscillator configured to generate a first oscillation signal, and a second oscillator configured to generate a second oscillation signal. The latch controller may be configured to receive a precharge signal and prevent the second oscillation signal from being synchronized with the precharge signal.

Abstract: Provided are a method of allocating resources in a wireless local area network (WLAN) system and the WLAN system including an access point (AP) to allocate a resource for communication between a relay and a station associated with the relay, the relay to allocate a restricted access window (RAW) or a slot for communication with a station based on the allocated resource, and the station to communicate with the relay based on the allocated RAW or the allocated slot.

Abstract: A vehicular radar system includes an optical source designed to output an optical signal. The vehicular radar system further includes a first optical splitter coupled to the optical source and designed to split the optical signal into a first duplicate signal and a second duplicate signal. The vehicular radar system further includes at least one converter coupled to the first optical splitter and designed to convert the first duplicate signal and the second duplicate signal into a first radar signal and a second radar signal, respectively. The vehicular radar system further includes a first antenna coupled to the at least one converter and designed to transmit the first radar signal, and a second antenna coupled to the at least one converter and designed to transmit the second radar signal.

Abstract: Methods, systems, and apparatus for an electric vehicle. The system includes a battery control unit configured to be in a grid-connected mode or a stand-alone mode. The system includes a shared boost converter connected to a battery. The shared boost converter receives alternating current (AC) power, steps up voltage and converts the AC power to direct current (DC) power when the battery control unit is in the grid-connected mode. The shared boost converter receives DC power from the battery and steps up voltage when the battery control unit is in the stand-alone mode. The system also includes an inverter configured to receive the stepped up DC power when the battery control unit is in the stand-alone mode and convert the DC power to AC power. The system also includes a motor/generator connected to the inverter and configured to receive AC power for powering a drivetrain of the electric vehicle.

Abstract: Provided is an apparatus and method for communication in a wireless local area network (LAN) system supporting a multi-bandwidth in which a communication apparatus supporting a multi-bandwidth includes generating a base frame based on at least one of a first bandwidth having the lowest signal-to-noise ratio (SNR) among predetermined bandwidths and a second bandwidth that is two times greater than the first bandwidth, configuring a duplication mode frame based on the base frame, and transmitting the duplication mode frame through a plurality of bands.

Abstract: A proximity communication method and apparatus using a link adaptation. A transmitter establishes a link that is configured using a channel aggregation by performing an association with a receiver, and performs a link adaptation that changes the channel aggregation with respect to the link in response to transmitting data to the receiver using the link.

Abstract: The present invention relates to methods for transmitting a frame by grouping a plurality of wireless terminals in a multiuser based wireless communication system. The present invention includes a method for transmitting a frame by including information about multiple receiver terminals in a MAC frame, another method for transmitting a frame by allocating group addresses and then using a corresponding group address for frame transmission, and yet another method for transmitting a frame by using a unique group sequence number that is allocated to each group and group control information that contains bitmap information. The group control information is included in a destination address field of a MAC layer, or in a signal field of a physical layer, or in both the MAC layer and the physical layer.

Abstract: An integrated circuit including semiconductor devices may be provided. The semiconductor device may be configured to compare phases of strobe signals which are generated according to internal delay times of the semiconductor devices and configured to control points of time that an internal command is inputted to the internal circuits of the semiconductor devices according to a comparison result of the phases of the strobe signals.

Abstract: An integrated circuit including semiconductor devices may be provided. The semiconductor device may be configured to compare phases of strobe signals which are generated according to internal delay times of the semiconductor devices and configured to control points of time that an internal command is inputted to the internal circuits of the semiconductor devices according to a comparison result of the phases of the strobe signals.

Abstract: Disclosed are a frame transmission method and a communication device performing the same. The communication device may transmit a null data packet (NDP)-announcement (NDP-A) including information on a plurality of communication devices participating in interference alignment and transmit an NDP including a common signal field and a common training field commonly applied to the plurality of communication devices.

Abstract: Bracket structures that structurally support and enhance the performance of millimeter-wave tapered-slot end-fire antennas for use in vehicular radar systems. The system includes a first longitudinal rib and a second longitudinal rib, each defining a first longitudinal slot and having a transmission end and a chip connection end. The system includes a crossbeam coupled to the first longitudinal rib and the second longitudinal rib. The system includes a first end-fire antenna having a transmission end that is received by the first longitudinal slot and a chip connection end. The first end-fire antenna is designed to transmit a first signal having a first phase. The system includes a second end-fire antenna having a transmission end that is received by the second longitudinal slot and a chip connection end. The second end-fire antenna is designed to transmit a second signal having a second phase that is different than the first phase.

Abstract: Arrangements directed to the wireless charging of a vehicle are described. A battery of a vehicle can be charged while the vehicle is traveling on a roadway. A driving environment of the vehicle can be sensed to detect a charging marker. The charging marker can provide information relating to a location of a charge transmitter located below a travel surface of the roadway. The charge transmitter can be located forward of the vehicle in the travel direction of the roadway. The location of the charge transmitter can be determined based on information obtained from the charging marker. A travel path for the vehicle can be determined based at least partially on the location of the charge transmitter so that the charge receiver is positioned in substantial charging alignment with the charge transmitter as the vehicle passes over the charge transmitters.

Abstract: An operating method of a memory device including a plurality of memory cells may include: measuring data retention times of at least a portion of the plurality of memory cells; and optimizing a refresh operation on the plurality of memory cells using the measurement result.

Abstract: A refresh control device, and a memory device may be provided. The latch controller may include a first oscillator configured to generate a first oscillation signal, and a second oscillator configured to generate a second oscillation signal. The latch controller may be configured to receive a precharge signal and prevent the second oscillation signal from being synchronized with the precharge signal.

Abstract: Disclosed is a refrigerator having a first storage chamber, a second storage chamber located below the first storage chamber, an ice maker configured to make ice pieces, an ice bucket configured to store the ice pieces made in the ice maker and a middle wall partitioning inside space of the refrigerator into the first storage chamber and the second storage chamber and including a base portion and a stepped portion located higher than the base portion to form ice-making space, wherein at least one portion of the ice maker and at least one portion of the ice bucket are accommodated in the ice-making space. With this structure, the space for actual use of the first storage chamber can be increased.

Abstract: An apparatus and method for orthogonal frequency division multiplexing (OFDM) transmission in a wireless local area network (WLAN) system is disclosed, in which the apparatus for OFDM transmission in the WLAN system includes a signal repetition unit to repeat an encoded signal based on a block unit and output the encoded signal and a repeated signal, an interleaver to interleave the encoded signal and the repeated signal and output an interleaved signal, a modulator to modulate the interleaved signal and output modulated symbols, and a phase rotation unit to phase shift the modulated symbols.

Abstract: A wireless communication device includes an amplifier block amplifying a radio frequency (RF) input signal. The amplifier block includes: a first amplification unit and a second amplification unit. The first amplification unit amplifies the RF input signal to generate a first RF amplified signal including a first non-linearity factor and a second RF amplified signal including a second non-linearity factor, and combines the first and second RF signals to generate a third RF amplified signal. The second amplification unit receives and amplifies the third RF amplified signal to output an RF output signal corresponding to the at least one carrier.