Byung Chang
Byung Chang Kang, Gyeonggi-Do KR
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20090010215 | METHOD OF ALLOCATING WIRELESS RESOURCE FOR SPACE DIVISION MULTIPLE ACCESS COMMUNICATION AND WIRELESS RESOURCE ALLOCATION SYSTEM OF ENABLING THE METHOD - A system for allocating a wireless resource for a Space Division Multiple Access (SDMA) communication is provided. The system for allocating the wireless resource for the SDMA communication includes: a channel state recognition unit to recognize a channel state of wireless channels generated among adjacent nodes including a source node, a relay node, and a destination node; and a wireless resource allocation unit to control at least one of an amount of channel state information fed back from the destination node to the source node, and a relay level of a relay signal, the relay signal being generated by relaying a source signal transmitted from the source node, according to the channel state. | 01-08-2009 |
Byung Chang Kim, Ulsan City KR
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20100109221 | JIG DEVICE - An upper clamping unit and a sub-clamping unit are respectively configured on the upper center of the main frame and on both sides of the front of the mounting portion, a side surface pad unit and a base surface pad unit are configured on one side and the front surface portion of the main frame so as to fix the upper part of a casting block, and the casting block is supplied from the upper portion through a gantry loader such that a separate transfer device is not necessary to make the fabrication process reasonable. | 05-06-2010 |
Byung Chang Kim, Gyeonggi-Do KR
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20130206977 | METHOD FOR CRYSTALLIZING LOW MASS IONS FOR DIAGNOSING COLORECTAL CANCER AND METHOD FOR DIAGNOSING COLORECTAL CANCER USING SAME - The present invention provides a method for crystallizing low mass ions for diagnosing colorectal cancer by using a MALDI-TOF mass spectrometer to biostatistically analyze low mass ions, which are extracted from a biological sample, and a method for providing information for diagnosing colorectal cancer using same. The present inventions can provide a diagnostic method, which requires low cost and a short time for analysis, can analyze large areas, and which can provide superior and credible discriminations. | 08-15-2013 |
Byung Chang Song, Gyunggi-Do KR
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20100207652 | METHOD FOR WAFER TEST AND PROBE CARD FOR THE SAME - A method of testing a wafer capable of minimizing the asymmetrical thermal deformation of a probe card when a wafer is tested using a probe card and of minimizing the number of times of tests to effectively test a large area wafer and a probe card for the same is presented. For the wafer test method for testing semiconductor chips on a wafer using a probe card, the method includes creating virtual repeating units corresponding to N semiconductor chips, wherein the N is natural number larger than or equal to 2, arranging the plurality of repeating units on the wafer and moving the probe card or the wafer N times and testing the semiconductor chips on a wafer, wherein the semiconductor chips in the repeating units are sequentially tested one by one per each touchdown. Also, the probe cards to realize above mentioned method have been described. | 08-19-2010 |
Byung-Chang Chung, Seoul KR
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20130225189 | APPARATUS AND METHOD FOR TRANSMITTING AND RECEIVING REFERENCE SIGNAL IN WIRELESS COMMUNICATION SYSTEM - An apparatus and a method for transmitting and receiving a reference signal in a wireless communication system are provided. The method includes determining a cluster-specific reference signal configuration according a cluster configuration, transmitting information about the cluster-specific reference signal configuration, and transmitting cluster-specific reference signals of at least one cluster according to the cluster-specific reference signal configuration. | 08-29-2013 |
20140073329 | APPARATUS AND METHOD FOR HANDOVER IN WIRELESS COMMUNICATION SYSTEM - A method for handover in a wireless communication system includes: when a received signal strength difference between a serving beam from a serving base station used for communication by a terminal and a target beam of a neighboring base station is equal to or greater than a first threshold value, and a received signal strength difference between an active beam and the target beam is equal to or greater than a second threshold value, determining a handover to the target beam; and transmitting a message to initiate the handover. | 03-13-2014 |
20140295896 | METHOD AND APPARATUS FOR OPERATING IDLE MODE IN WIRELESS COMMUNICATION SYSTEMS - Provided is a method and apparatus for operating an idle mode in a wireless communication system. The method includes receiving a first message requesting entry to an idle mode from a Subscriber Station (SS) through at least one Base Station (BS), selecting in response to reception of the first message whether the MS is to enter an idle mode in which BSs belonging to a paging group broadcast a paging message for the MS or whether the MS is to enter a semi-idle mode in which BSs belonging to a semi-idle paging group, which is a subset of the paging group, broadcast the paging message for the SS, and transmitting Paging announce information instructing the BSs belonging to the semi-idle paging group to broadcast the paging message for the SS, if the semi-idle mode is selected. | 10-02-2014 |
Byung-Chang Kim, Miryang-Si KR
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20140065908 | FIBER-REINFORCED COMPOSITE MATERIAL - A fiber-reinforced composite material which comprises Lyocell-based carbon fiber and polymer resin is provided. The fiber-reinforced composite material has excellent physical properties, including low thermal conductivity, excellent interfacial adhesion and excellent strength, compared to fiber-based composite materials prepared using conventional polyacrylonitrile-based carbon fiber, pitch-based carbon fiber or the like. In addition, the fiber-reinforced composite material is environmentally friendly and has low production costs compared to fiber-reinforced composite materials comprising conventional rayon-based carbon fiber produced using a highly toxic carbon disulfide solvent. | 03-06-2014 |
Byung-Chang Song, Seoul KR
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20140242330 | IRREGULARLY FORMED WATERPROOF PANEL HAVING HOLLOW PROTRUSION FOR WATERPROOFING, AND WATERPROOFING CONSTRUCTION USING SAME - The present invention relates to an irregularly formed waterproof panel having a hollow protrusion for waterproofing, and to a waterproofing construction using same. The present invention provides: an irregularly formed waterproof panel in which a complex waterproofing layer is formed using the irregularly formed waterproof panel having a hollow protrusion to prevent a waterproofing foundation from being cracked or to prevent a waterproofing layer from being damaged due to the behavior of a joint, and to provide permeability to air; and a waterproofing construction using same. The exposed or non-exposed waterproofing construction with respect to the concrete structure includes: a step of forming a complex waterproof layer in which irregularly formed waterproof panels are integrated with the surface of the concrete structure, wherein the complex waterproof layer is installed by connecting the irregularly formed waterproof panels to each other; and a step of applying a waterproof material to fill the inside of the protrusion of each of the irregularly formed waterproof panels to form an upper waterproof layer, wherein each of the irregularly formed waterproof panels includes a flat plate part having a sheet or plate shape and a plurality of hollow protrusions having a conic or semicircular shape and which protrude downward from the flat plate part. | 08-28-2014 |