baber/WOPTO huggingface dataset:
Patent KR-20200067414-A (KR)
Inventor: SEOKHIE HONG
IPC: H04L9/06
Filed: 2018-12-04
Abstract: Disclosed are a method for switching arithmetic masking into Boolean masking to manage side channel analysis attack in a low-memory environment and a recording medium and a device for executing the same. According to the present invention, the method comprises the following steps of: excluding the least significant bit from data of an arithmetic masking state and processing Boolean masking for each bit to generate a G table; processing Boolean masking for a carry bit generated in the G table generation step to generate a C table; checking whether the carry bit is generated in the step of using the G table to process Boolean masking for each bit of the data of the arithmetic masking state; and using the C table to remove the carry bit from the data of the arithmetic masking state and using the G table to switch the data of the arithmetic masking state into the data of a Boolean masking state.
Patent KR-20200067660-A (KR)
Inventor: SHIN CHANG HO
IPC: A23L2/38
Filed: 2018-12-04
Abstract: The present invention relates to a functional beverage comprising, as an active ingredient, mineral water with high hardness having an optimal mixing ratio of ionized minerals (Ca : Mg) based on various minerals dissolved in saline groundwater or deep sea water. The functional beverage of the present invention not only imparts a refreshing feeling in the mouth upon consumption, but also suppresses lactic acid accumulation and improves athletic performance. The functional beverage of the present invention may exhibit an effect of inhibiting lactic acid accumulation and improving anaerobic exercise capacity according to the mixing ratio of calcium and magnesium.
Patent KR-20200068245-A (KR)
Inventor: LEE SU KYOUNG
IPC: A61B5/103
Filed: 2018-12-05
Abstract: The present invention relates to a dynamic balance for measuring body balancing ability and providing an exercise prescription and, more specifically, to a dynamic balance to collect concrete information for a user′s body shape required for constructing customized standardization data for each lifecycle in accordance with healthcare through measurement of a body balancing ability (exercise evaluation) in various postures and measurement of a body mass index (BMI). Specifically, the present invention relates to a dynamic balance for providing an exercise prescription suitable for the ability to balance the balancing ability and exercise prescription for bodybuild based on a measurement value. According to one embodiment of the present invention, the dynamic balance comprises: a base plate enabling the user, who wants to measure his or her body balancing ability, to step thereon with one foot; a first pointer longitudinally protruding to the front side of a stepping footplate to enable the user to take a posture stretching forward the other foot while stepping on the base plate; and a plurality of second pointers longitudinally protruding in the diagonal direction of left and right rear sides of the stepping footplate to enable the user to take a posture and laterally opening and stretching backward the other foot while stepping on the stepping footplate. The base plate has the length and width to place one foot of the person to be measured thereon and has the thickness to insert a front end part into the first and second pointers and embed a measurement module therein. Moreover, an insertion space to insert and couple one front end part of the first pointer thereinto and thereto is formed in a longitudinal front end part.
Patent KR-20200068495-A (KR)
Inventor: SEO YOUNG JOON
IPC: A61B3/14
Filed: 2018-12-05
Abstract: To solve a task to be solved of the present invention, a method for displaying a diagnosis name of otolithiasis by using a nystagmograph and a terminal comprises the steps of: (a) receiving data measured by the nystagmograph and diagnosing whether there are nystagmus and otolithiasis in a terminal; and (b) displaying a diagnosis result performed in the step (a) on a display device of the terminal to display the nystagmus direction and strength of both eyes as an image together with a diagnosis name. According to the present invention, since a user can diagnose whether there are nystagmus and otolithiasis by using objective data and check the nystagmus direction and strength of both eyes through a graph, there is an effect of diagnosing and providing proper treatment at the same time.
Patent KR-20200068867-A (KR)
Title: Wet Type Dust Collector having Multiple Nozzles with Electrospraying using Water Level Difference
Inventor: CHOI JONG WON
IPC: B03C3/16
Filed: 2018-12-06
Abstract: The present invention relates to an electrostatic spraying multiple nozzle using water level difference and a wet type dust collector including the same, in order to solve a problem, such as, that shot is generated in an electrostatic spraying nozzle by water supplied in a vertical form or that electrostatic spraying does not occur. Since fine droplets and exhaust gases are brought into contact, it is possible to improve removal efficiency of particles having a small particle size. In addition, by forming a plurality of conduits in the center of a cylindrical portion, it is possible to effectively generate electrostatic spraying through the supply of water by the water level difference.
Patent KR-20200069549-A (KR)
Title: Photovoltaic Power Converter including surge protection
Inventor: CHONG DAE WON
IPC: H02H9/04
Filed: 2018-12-07
Abstract: The present invention relates to a solar power conversion device having a surge protection device. The solar power conversion device having a surge protection device comprises: a first surge protector connected between an output terminal of a solar array and a power conversion device when a surge voltage generated from solar energy is applied to the solar array; a solar power output unit connected to the output terminal of the solar array, outputting power generated from the solar array and transferring the power to a load; and a second surge protector connected between the solar power output unit and the load.
Patent KR-20200070859-A (KR)
Inventor: LEE KYO BEUM
IPC: H02P21/20
Filed: 2018-12-10
Abstract: The present invention relates to a method for a permanent magnet synchronous motor (PMSM) drive control through a torque predictive control. The method for a PMSM drive control through a torque predictive control comprises the steps of: (a) calculating corrected command voltage vector information through recalculation of a command voltage vector obtained through a torque predictive control; and (b) controlling a PMSM to be driven based on the corrected command voltage vector information.
Patent KR-20200072092-A (KR)
Inventor: KIM YOUNG SIK
IPC: C12G3/02
Filed: 2018-12-12
Abstract: The present invention relates to liquor using spirulina and a method for manufacturing the same. Primary fermentation is performed with distilled water, fructooligosaccharide, and yeast fungus. Then, a spirulina extract liquid is obtained through pretreatment for spirulina extraction efficiency enhancement. Through secondary fermentation for processing active nutritional ingredients of spirulina into an easily ingestible form and minimizing destruction of the active nutritional ingredients, a predetermined amount of high-yield spirulina fermentation liquid is mixed with the product of the primary fermentation. Next, tertiary fermentation is performed. As a result, the liquor is capable of retaining the active ingredients of spirulina and can be easily drunk with off-flavor removed.
Patent KR-20200073338-A (KR)
Inventor: SON JUNGHA
IPC: H01L27/32
Filed: 2018-12-13
Abstract: A display device comprises a display panel and an input sensing member. An input sensing member includes: a first conductive pattern; a first insulating layer covering the first conductive pattern; a second conductive pattern disposed on the first insulating layer; and a second insulating layer covering the second conductive pattern. Both the first insulating layer and the second insulating layer include an organic material. The refractive index of the second insulating layer is greater than the refractive index of the first insulating layer. Therefore, it is possible to reduce the loss of light generated by a light emitting device without being emitted to the outside.
Patent KR-20190074994-A (KR)
Title: Switched capacitor converter with compensation inductor
Inventor: RAINER CHRISTIAN
IPC: H03H19/00
Filed: 2018-12-19
Abstract: Circuits and methods are provided for soft switching within a switched-capacitor DC/DC converter, to reduce switching losses and improve efficiency. This is accomplished, in preferred converters, by coupling a compensation inductor between one half-bridge of an output rectifier and another half-bridge of the output rectifier. The compensation inductor functions to transfer charge from or to the capacitance of switches within the converter while the switches are turned off, such that voltage at both ends of each switch is reduced to zero before the switches are turned on. Accordingly, zero-voltage switching (ZVS) and its associated high efficiency can be provided. The efficiency associated with the ZVS makes ideal ZCS less important, such that high-precision capacitors and inductors forming resonant tanks required by near-ideal ZCS are not required. The resultant circuits are physically smaller and less expensive than other converters that require near-ideal ZCS, but achieve similar or better efficiency.
Patent KR-20200076372-A (KR)
Title: Pet harness for use on double sides
Inventor: YOO NAM SUCK
IPC: A01K29/00
Filed: 2018-12-19
Abstract: The present invention relates to a pet harness capable of double-side use, comprising: a main body made of a soft material to bend both sides in a U shape such that an upper part is opened, having a leg through-hole formed at a center of a lower part such that a pair of front legs of a pet passes through so as to allow a front side of the leg through-hole to support a chest part of the pet while allowing a rear side to support an abdomen part of the pet, and forming one surface located on the outside and the other surface located on the inside to have different colors and shapes such that the other surface is located on the outside while one surface is located on the inside when turned over, and thus both sides can be used; a hanging loop disposed on each of upper ends of the both sides in a ∩ shape; a pair of fixing members disposed in one hanging loop by fixing lower end parts of both sides of the hanging loop to one surface and the other surface of the main body by sewing, respectively; and a rotating loop configured to be able to rotate such that a lower part is fixed to the hanging loop and an upper part is fixed to a leading line for leading a pet, and rotated not to twist the fixed leading line when using the main body upside down.
Patent KR-20200076875-A (KR)
Inventor: LEE HAN BIN
IPC: B01D46/42
Filed: 2018-12-20
Abstract: The present specification is to provide a filter detached from a computer main body and prevent dust or foreign substances from penetrating into the computer main body by a simple method. To implement the filter, the filter according to the present specification comprises: a filter body covered on a front surface of an air circulation port of the computer main body; a frame surrounding the rim of the filter body and adhering to the computer main body; and a hook extended at regular intervals from one surface of the frame so that the frame is adhered to the computer main body and partially inserted into the air circulation port to be hooked to the computer main body.
Patent KR-20190003432-A (KR)
Inventor: YUN GYUNG SEON
IPC: B63C11/20
Filed: 2018-12-21
Abstract: The present invention relates to a snorkel apparatus capable of supplying and discharging air using an electric propeller. According to the present invention, an air inflow rotating body (Fig. 4 M-9) is operated when a battery (Fig. 3 F-11) is charged and a rotating body operation switch (Fig. 3 F-16) is turned on. Air flows into an air box through an air inlet pipe (Fig. 4 M-4) simultaneously with operation of an air discharge rotating body (Fig. 4 M-10), and a user inhales the air staying in the air box and exhales the air to the air box through an air inlet/outlet tube (Fig. 4 M-1). The air stored in the air box is discharged to the outside through an air discharge pipe (Fig. 4 M-7). When a small quantity of water or a foreign matter flows in the air box, the water or the foreign matter is removed by using a drain button (Fig. 4 M-12). A material of the snorkel apparatus is not limited to plastic, silicone, and metal, the speed of the air inflow rotating body and the air discharge rotating body is differently set, the rotating body is not limited to an electric propeller, and the air discharge pipe (Fig. 1-7) is able to discharge the air from the snorkel apparatus in water or oil. Accordingly, the snorkel apparatus is able to be usefully used in a beach, a river, a pool, and a space with insufficient air, used for a woman diver, and skin scuba, and used for cleaning an oil storage and a sewer.
Patent KR-20200078000-A (KR)
Inventor: LEE HAE JUN
IPC: B60H1/08
Filed: 2018-12-21
Abstract: The present invention relates to a heat management system comprising: a refrigerant circulation line including a compressor, a water-cooled condenser, a refrigerant closed loop to which a second expansion valve and a chiller are sequentially connected to circulate refrigerant, a primary cooling line including a water-cooled evaporator and a first expansion valve disposed on a refrigerant line for connection between the water-cooled condenser and a second expansion valve and between the chiller and the compressor to circulate the refrigerant, and a refrigerant heat exchanger disposed in the primary cooling line and configured to exchange heat between a refrigerant flowing into the first expansion valve and a refrigerant discharged from the water-cooled evaporator; a secondary cooling line which cools the room by circulating coolant heat-exchanged with the refrigerant through the water-cooled evaporator; a heating line which circulates the coolant to heat the room; and a cooling line for cooling a battery and an electronic component by circulating air or the coolant. The heat management system enables efficient heat management of the electrical component and the battery in a vehicle, in addition to the cooling and heating of the vehicle, and can increase heat pump performance and system efficiency.
Patent KR-20190080777-A (KR)
Inventor: SEKI KENJI
IPC: B05D5/08
Filed: 2018-12-26
Abstract: An objective of the present invention is to provide a surface treatment method capable of performing modification (for example, assignment of hydrophobic, and the like) with a different level in accordance with a material of each region of a substrate surface having a plurality of regions, a surface treatment agent thereof, and a method for selectively forming a film on a region of a substrate in an atomic layer deposition (ALD) method. According to the present invention, the surface treatment method for a surface of a substrate comprises a step of exposing the surface to a surface treatment agent including a silylating agent (A) and a nitrogen-containing heterocyclic compound (B). The surface includes two or more regions and the materials of adjacent regions among the two or more regions are different from each other, and water contact angles of the adjacent regions among the two or more regions are different from each other by reaction with the silylating agent in the two or more regions.
Patent KR-20190004244-A (KR)
Title: X-ray image apparatus nad control method for the same
Inventor: LEE HO JUN
IPC: A61B6/00
Filed: 2018-12-27
Abstract: Provided are an X-ray imaging apparatus and a control method thereof that display each divided region in which stitching photographing is to be performed on a camera image photographed with a camera and links the divided region displayed on the camera image with the X-ray irradiation condition setting screen for each divided region thereby allowing a user to intuitively and easily grasp which divided region the X-ray irradiation condition is to be set for. An X-ray imaging apparatus according to an embodiment comprises a photographing unit for photographing a camera image; a controller for stitching a plurality of X-ray images for a plurality of divided regions to generate one X-ray image; and a display unit for displaying a setting window for providing a graphical user interface for receiving setting of the X-ray irradiation condition for each of the plurality of divided regions and a camera image in which the positions of the plurality of divided regions are displayed.
Patent KR-20200081070-A (KR)
Title: electronic cigarette
Inventor: PARK SANG GEUN
IPC: A24F47/00
Filed: 2018-12-27
Abstract: Disclosed is an electronic cigarette. The electronic cigarette according to one embodiment includes: a main body having an insertion hole at an upper portion so that a cigarette-only stick is inserted, and a heating part for heating the cigarette-only stick inserted into the insertion hole; a cover covering the upper portion of the main body; and a hinge part for lifting and rotatably coupling the cover to the main body to open and close the upper portion of the main body. The electronic cigarette has improved convenience and durability.
Patent KR-20200082219-A (KR)
Title: Collision avoidance system of inner aerial drone and method thereof
Inventor: CHOI WON HYUCK
IPC: B64C39/02
Filed: 2018-12-28
Abstract: The present invention relates to a system for preventing collisions of an indoor flight drone, which includes: an UWB anchor transmitting position information of an indoor space by using a frequency in the 3.1 to 10.6 GHz band; a drone which is an unmanned aerial vehicle in a shape of multiple propellers; an UWB tag mounted on a lower portion of a body of the drone and receiving position data of the drone transmitted from the UWB anchor to calculate indoor space position measurement; an LiDAR mounted on an upper portion of the body of the drone and irradiating laser light in all directions at 360 degrees to measure a distance to an obstacle or a wall; and an FCC controlling a motor of the drone so as to prevent the collisions when the drone reaches an obstacle access restriction distance based on the indoor space position measurement data and the distance data to the obstacle or the wall respectively transmitted from the UWB tag and the LiDAR.
Patent KR-20200082893-A (KR)
Inventor: YOUNGWOONG HAN
IPC: G06F16/904
Filed: 2018-12-31
Abstract: The present invention relates to a time series data processing device and to an operating method thereof. According to an embodiment of the present invention, the time series data processing device includes a preprocessor, a learner, and a predictor. The preprocessor preprocesses time series data to generate interval data, interpolation data, and masking data. The learner may generate a weight group of a prediction model for generating feature weights and time series weights based on interval data, interpolation data, and masking data. Feature weights depend on the time and features of time series data, and time series weights depend on the time flow of the time series data. The predictor generates feature weights and time series weights based on the weight group, and generates prediction results based on the feature weights and the time series weights. According to the present invention, accuracy and reliability of prediction results can be improved by correcting irregular time intervals and missing values of the time series data.
Patent KR-20180022775-A (KR)
Title: 신규 화합물, 박막 형성용 원료 및 박막의 제조 방법
Inventor: YOSHINO TOMOHARU
IPC: H01L21/285
Filed: 2016-05-17
Abstract: 본 발명의 신규 화합물은, 하기 일반식 (I) 또는 (II)로 나타내어지는 것을 특징으로 한다： 
[화학식 1] 
     
［식 중, R 1  및 R 2 는, 각각 독립적으로 탄소 원자수 1 ~ 12의 탄화수소기를 나타내며, 그 탄화수소기의 수소 원자는 Si(R 3 ) 3 으로 치환되어 있는 경우도 있다. 단, R 1 과 R 2 는 상이한 기이다. R 3 은, 메틸기 또는 에틸기를 나타내며, M은, 금속 원자 또는 규소 원자를 나타내며, n은 1 ~ 4의 정수를 나타낸다.］
Patent KR-20180036701-A (KR)
Title: Iii족 질화물 반도체 발광소자 및 그 제조방법
Inventor: WATANABE YASUHIRO
IPC: H01L33/14
Filed: 2016-06-22
Abstract: 종래보다 우수한 소자 수명을 가지는 III족 질화물 반도체 발광소자 및 그 제조 방법을 제공한다. 
본 발명의 III족 질화물 반도체 발광소자(100)는, n형 III족 질화물 반도체층(30)과, 장벽층(40a) 및 장벽층(40a)보다 밴드갭이 작은 우물층 (40b)을 이 순서로 교대로 N층씩(단, N는 정수이다) 적층하여 이루어지는 III족 질화물 반도체 적층체(40)와, AlN 가이드층(60)과, p형 III족 질화물 반도체층 (70)을 이 순서로 가지며, AlN 가이드층(60)의 두께가 0.5nm 이상 2.0nm 이하인 것을 특징으로 한다.
Patent KR-20180021891-A (KR)
Title: 미용 처리 방법
Inventor: BLANC JEAN BAPTISTE
IPC: A41G5/00
Filed: 2016-07-26
Abstract: 본 발명은 미용 처리 방법에 관한 것으로서, 
- 처리될 케라틴 재료의 부위상에, 접착제 영역들 (A) 과 상기 접착제 영역들 사이에서 연장되는 비접착제 영역들의 한 세트를 형성하는 단계, 
- 섬유들 (F) 을 상기 부위에 정전식으로 프로젝트하는 단계를 포함한다.
Patent KR-20180036732-A (KR)
Title: 탱크 배기 밸브의 고착을 검출하는 방법
Inventor: SCHOCK GUIDO
IPC: F02D41/00
Filed: 2016-07-04
Abstract: 본 발명은 자동차 내 탱크 배기 밸브(3)의 고착을 검출하는 방법에 관한 것으로, 이 방법에서는 흡입관(8) 또는 터보차저(7) 내로의 유입 지점(15)과 탱크 배기 밸브(3) 사이의 탱크 배기 라인(14) 내에 온도 센서(10)가 배치되며, 계산된 탱크 배기 질량 유량(m reg,b )과 온도 센서(10)의 신호값(s temp )의 상관 크기(magnitude of correlation)가 사전 설정 가능한 임계값(s 1 , s 2 )을 위반하면 탱크 배기 밸브(3)의 고착이 검출된다.
Patent KR-20180036752-A (KR)
Title: 자동 변속기의 제어 장치 및 자동 변속기의 제어 방법
Inventor: HAMANO MASAHIRO
IPC: F16H61/12
Filed: 2016-09-14
Abstract: 토크 컨버터와, 토크 컨버터로부터 구동륜으로의 동력 전달 경로 상에 설치된 유단 변속 기구를 구비하는 자동 변속기를 제어하는 자동 변속기의 제어 장치이며, 자동 변속기의 비주행 레인지 선택 중에, 유단 변속 기구의 출력축의 감속도와, 토크 컨버터의 변화에 기초하여, 유단 변속 기구에 있어서의 인터로크 판정을 실행한다.
Patent KR-20180034638-A (KR)
Title: 천연 면역글로불린 포맷을 가지는 용이하게 분리된 이중특이성 항체
Inventor: DAVIS SAMUEL
IPC: A61K39/395
Filed: 2010-06-25
Abstract: CH3 도메인에서 다르게 변형된 면역글로불린 중쇄 가변 도메인을 포함하며, 다른 변형은 CH3 변형에 대해 비-면역원성 또는 실질적으로 비-면역원성이고, 변형 중 적어도 하나는 단백질 A와 같은 친화성 시약에 대해 이중특이성 항체에 대한 다른 친화도를 초래하고, 이중특이성 항체는 분열된 세포, 배지, 또는 단백질 A에 대한 친화도를 기반으로 한 항체들의 혼합물로부터 분리할 수 있는, 각각의 분리를 제공하는 이중특이성 항체가 제공된다.
Patent KR-20180048713-A (KR)
Title: 영상의 부호화/복호화 방법 및 이를 위한 장치
Inventor: PARK SEUNGWOOK
IPC: H04N19/172
Filed: 2016-09-23
Abstract: 본 발명에서는 영상의 부호화/복호화 방법 및 이를 위한 장치가 개시된다. 구체적으로, 영상을 복호화하는 방법에 있어서, 현재 픽쳐와 참조 픽쳐의 성질이 상이한지 여부를 판단하는 단계, 상기 현재 픽쳐와 상기 참조 픽쳐의 성질이 상이하면, 상기 참조 픽쳐가 상기 현재 픽쳐와 동일한 성질을 가지도록 변환하는 단계 및 상기 변환된 참조 픽쳐를 이용하여 상기 현재 픽쳐를 소정의 블록 단위로 인터 예측을 수행하는 단계를 포함할 수 있다.
Patent KR-20180055820-A (KR)
Title: 폴리벤조옥사졸 및 그 이용
Inventor: EBARA KAZUYA
IPC: C08G73/22
Filed: 2016-09-13
Abstract: 무기 성분을 사용하지 않아도 그 단독으로 수증기 배리어성이 양호한 박막을 부여하는 폴리머 및 그 이용을 제공한다. 　식(2)으로 표시되는 것을 특징으로 하는 폴리벤조옥사졸.  (식 중, R 1 ~R 13 은 서로 독립적으로 수소 원자, 할로겐 원자, 나이트로기, 사이아노기, 또는 할로겐 원자로 치환되어 있어도 되는 탄소수 1~20의 알킬기, 탄소수 2~20의 알케닐기, 탄소수 2~20의 알키닐기, 탄소수 6~20의 아릴기 혹은 탄소수 2~20의 헤테로아릴기를 나타내고, n은 2 이상의 정수를 나타낸다.)
Patent KR-20180043338-A (KR)
Title: 가이드와이어를 조명하고 배향시키기 위한 장치 및 방법
Inventor: KERMANI MAHYAR Z
IPC: A61B90/30
Filed: 2016-07-28
Abstract: 장치는 전원, 펄스 발생기, 광원, 가이드와이어, 광섬유, 및 커넥터를 포함한다.  펄스 발생기는 전원과 전기 연통한다.  펄스 발생기는 또한 전기 펄스를 발생시킬 수 있다.  광원이 펄스 발생기로부터 수신되는 전기 펄스에 응답하여 켜지고 꺼지는 방식으로, 광원은 펄스 발생기와 전기 연통한다.  가이드와이어는 근위 단부 및 원위 단부를 포함한다.  광섬유는 가이드와이어의 근위 단부로부터 가이드와이어의 원위 단부를 향해 가이드와이어를 통해 연장된다.  커넥터는 가이드와이어와 결합되면서 광원이 광섬유와 연통하게 한다.
Patent KR-20180052716-A (KR)
Title: 의약품, 바이오프로세스 적용분야, 및 식품/유제품 적용분야를 위한 가요성 배관 관리 시스템
Inventor: GAGNE MICHAEL C
IPC: A61M39/08
Filed: 2016-09-14
Abstract: 의약품, 바이오프로세스, 또는 식품/유제품 적용분야에 사용되는 가요성 도관 또는 배관을 관리하는 시스템은 가요성 도관 또는 배관의 세그먼트 그리고 복수의 도관 트랙을 포함하고, 각각의 도관 트랙은 그 제1 측면 상에 배치되고 각각의 도관 트랙의 길이를 따라 연장하며 가요성 도관 또는 배관의 세그먼트를 내부에 수용하는 치수로 되어 있는 도관 채널을 포함하고, 각각의 도관 트랙은 제2, 대향 측면 상에 배치되고 각각의 도관 트랙의 길이를 따라 연장하며 인접 도관 트랙을 연결하는 하나 이상의 커넥터를 수용하는 커넥터 채널을 추가로 포함한다.  도관 트랙은 서로에 또는 다른 공정 구성요소에 연결될 수 있다.
Patent KR-20180063126-A (KR)
Title: 중첩된 베이직 서비스 세트를 포함하는 고밀도 환경에서의 무선 통신 방법 및 무선 통신 단말
Inventor: SON JUHYUNG
IPC: H04L27/26
Filed: 2016-10-20
Abstract: 무선으로 통신하는 무선 통신 단말이 개시된다. 무선 통신 단말은 송수신부; 및 프로세서를 포함한다. 상기 프로세서는 상기 송수신부를 통해 제1 PPDU(PLCP Protocol Data Unit)의 시그널링 필드를 수신하고, 상기 시그널링 필드가 나타내는 BSS(Basic Service Set)를 식별하는 정보를 기초로 채널에 접근(access)한다.