Lg Electronics Inc.

Other

Samsung Electronics Co., Ltd.

Kyuin Lee

Jaewook Song

Hyowon Bae

Joongkwan Huh

Sukhyon Yoon

Jinmin Kim

Jinsoo Choi

Suman Banerjee

Kyungsoo Woo

Younghyun Kim

Neil Klingensmith

Hosoon Lee

Hakju Kim

Jiwoon Lim

Se Jin Kim

Yoonsuk Oh

Seon-Jung Kim

Wanju Sin

Jong Wan Jeong

The present invention relates to an image display device. An image display device according to an embodiment of the present invention comprises: a display; and a wireless transmission device which is spaced apart from the display and transmits image data to the display by a wireless communication method, wherein the wireless transmission device includes at least one antenna device for wirelessly transmitting image data to the display, and the wireless transmission device generates, for beamforming tracking of a beam output from the antenna device, a beamforming candidate list including some of a plurality of antenna-based indexes corresponding to a peripheral region around the antenna device, and when a difference in a signal-to-noise ratio or a metric difference between a first index and a second index adjacent to the first index among some of the plurality of antenna-based indexes is less than a beam gain, the wireless transmission device excludes the second index from the beamforming candidate list. Accordingly, it is possible to quickly perform beamforming tracking when a blocker occurs between the wireless transmission device and the display, which are arranged apart from each other.

Image display device

A method and a device for transmitting an A-PPDU in a wireless LAN system are proposed. Specifically, a transmission STA generates an A-PPDU and transmits the A-PPDU to a reception STA. A first PPDU and a second PPDU are aggregated into the A-PPDU. The first PPDU includes an L-Header field, a first EDMG-Header field, and a first data field. The second PPDU includes a second EDMG-Header field and a second data field. Zero padding is inserted in the first data field on the basis of the minimum number of symbol blocks of the first PPDU.

Method for transmitting/receiving A-PPDU in wireless LAN system and device therefor

The present specification relates to a transmission apparatus and method for transmitting a signal in a wireless AV system. The transmission apparatus measures a signal to interference plus noise ratio (SINR) in a radio link. The transmission apparatus selects a modulation and coding scheme (MCS) set on the basis of the measured SINR. The transmission apparatus selects an optimal MCS from among the MCS set on the basis of the priority of a signal. The transmission apparatus transmits the signal on the basis of the optimal MCS.

Transmission apparatus and method for transmitting signal in wireless AV system

A method by which a first wireless device tracks a channel in a wireless AV system, according to one embodiment of the present invention, comprises the steps of: receiving a radio signal including a first part related to a preamble and a second part related to a data block and a GI; estimating an initial channel on the basis of the preamble; estimating a residual channel on the basis of the GI, wherein a reconstruction sequence reconstructed on the basis of a Golay sequence having a predetermined length is applied to the GI; and updating a channel on the basis of first information acquired on the basis of the initial channel estimation and second information acquired on the basis of the residual channel estimation.

Method for tracking channel in wireless AV system and wireless device using same

An electronic device according to one embodiment of the present invention comprises: a first transmission antenna module which transmits a monitoring signal for a radio link on the basis of a preset transmission antenna weight vector according to a first control signal; a first reception antenna module which receives the monitoring signal from the first transmission antenna module on the basis of a preset reception antenna weight vector, and generates first and second monitoring result information on the basis of the monitoring signal; a second transmission antenna module which transmits the first and second monitoring result information; a second reception antenna module which receives the first and second monitoring information from the second transmission antenna module; a processor which transmits the first control signal and a second control signal associated with a compression rate determined on the basis of the first and second monitoring information; and a data compression module which performs compression on a data stream on the basis of the second control signal.

Electronic device supporting variable compression rate on basis of radio link condition

A method for supporting a receiving operation based on 2D-NUC performed by a first wireless device according to the present embodiment, comprises the steps of: receiving first and second input information from a second wireless device; performing equalization on the first and second input information; and generating LLR information on the basis of lookup table information predetermined for the equalized first and second input information and 2D-NUC.

Method for supporting receiving operation based on 2D-NUC and wireless device using same

The present specification relates to a reception apparatus and method for demodulating a signal in a wireless AV system. The reception apparatus estimates a transmission signal on the basis of an MMSE weight matrix. The reception apparatus divides the estimated transmission signal for respective reception antennas and performs an IFFT. The reception apparatus estimates and compensates for phase noise for the respective reception antennas on the basis of the signal for which the IFFT has been performed. The reception apparatus demodulates the estimated and compensated signal for respective streams.

Reception apparatus and method for demodulating signal in wireless AV system

A pairing apparatus according to an exemplary embodiment of the present invention includes: a noise filtering part for filtering a noise on a power line; and a processor for pairing with a pairing target device and performing an authentication by generating a secret key using the filtered noise and by using the generated secret key.

Pairing apparatus using secret key based on power line noise, method thereof

A pairing apparatus according to exemplary embodiments of the present invention comprises a position measurer for measuring position changes of a first direction and a second direction; and a processor for generating a secret key using the measured position change of the first direction and the measured position change of the second direction and performing a pairing with a pairing target apparatus using the secret key.

Context-based pairing apparatus, and method thereof

The present disclosure relates to a data transmission apparatus and method using a polarized antenna in a wireless AV system, and a data reception apparatus and method. The present specification provides a method for performing polarization alignment for a downlink on the basis of reciprocity, a method for performing polarization alignment for an uplink, and a method for performing polarization alignment independently for each DMG antenna when one data transmission apparatus or one data reception apparatus uses multiple DMG antennas. Optimal MIMO performance can be guaranteed by aligning polarization between multiple antennas of the data transmission apparatus and the data reception apparatus in the wireless AV system, the polarization alignment for a downlink or an uplink may be selectively performed on the basis of reciprocity, and polarization distortion can be reduced through the independent polarization alignment between each DMG antenna.

Data transmission apparatus and method using polarized antenna in wireless AV system

The present invention relates to an apparatus and a method for performing beamforming using multiple antennas in a wireless AV system. The present specification discloses a wireless data transmission apparatus comprising: a plurality of transmission antennas; a communication circuit for performing a MIMO beamforming procedure on the basis of an individual transmission sector sweep for each of the plurality of transmission antennas during a data transmission interval within a beacon interval, and transmitting a physical layer protocol data unit (PPDU) frame to a wireless data reception apparatus through the plurality of transmission antennas; and a processor connected to the communication circuit, and configured to generate AV data to be transmitted through the PPDU frame and provide the generated AV data to the communication circuit. The present invention can reduce time required for MIMO beamforming while minimizing training of an excessive sector combination in a communication procedure or information related to the MIMO beamforming in a wireless AV system, and maintain the reliability of the system by using an optimum sector combination.

Apparatus and method for performing beamforming using multiple antennas in wireless AV system

According to various embodiments, a method for manufacturing a metal housing can be provided, comprising: a step of forming a metal base made of a metal material; a step of pretreating the surface of the metal base such that the surface has a predetermined gloss and flatness; an anodizing step of forming a predetermined oxide film on the flat surface of the metal base; a step of coloring the oxide film by using a colorant having a desired color; a sealing step for maintaining the performance and characteristics of the colorant on the colored oxide film; and a step of laminating at least one deposition layer on the upper part of the sealed oxide film.

Housing, method for manufacturing housing, and electronic device comprising same

Provided are a method of selectively using an interference rejection combining (IRC) receiver by a user equipment (UE) in a wireless communication system, and an apparatus supporting the same. The UE may calculate a dominant interferer proportion (DIP) estimation parameter based on a covariance matrix, may estimate a DIP based on the DIP estimation parameter, and may determine whether to use the IRC receiver based on the estimated DIP and a DIP threshold.

Methods and apparatus for using IRC receiver selectively by a user equipment

Provided are a method for a user equipment to select a codebook index in a wireless communication system and an apparatus supporting the method. The method performed by the user equipment comprises performing zero padding for a first vector, wherein the first vector represents a channel state measured by a receive antenna for a first transmit antenna; performing IFFT for a second vector, wherein the second vector is obtained by performing the zero padding for the first vector; performing receive antenna combining for a third vector, wherein the third vector is obtained by performing IFFT for the second vector; and detecting a maximum element from a fourth vector, wherein the fourth vector is obtained by performing the receive antenna combining for the third vector.

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Seoul, South Korea

Kyuin Lee