Young-Yong
Young Yong Kim, Yongin-Si KR
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20090171370 | Navigation System for Hip Replacement Surgery Having Reference Mechanism and Method Using the Same - A navigation system for an acetabular cup, which guides an insertion orientation of the acetabular cup inserted into a pelvis during a total hip replacement surgery, includes: a pelvis position tracer which includes probes in contact with three particular points of the pelvis placed on an anterior pelvic plane and a first reference mechanism disposed to indicate a specific reference plane when the probes come in contact with the particular points; and a pelvis position indicator which is fixed to the pelvis, and includes a second reference mechanism that is adjustable to indicate a plane parallel to the specific reference plane indicated by the first reference mechanism, or to indicate a plane perpendicular thereto, or to indicate the both planes. Accordingly, an insertion orientation of an acetabular cup can be guided by using a reference mechanism having a simple structure, and the acetabular cup can be accurately guided regardless of changes in the patient's pelvic position during surgery, because a plane used in the insertion of the acetabular cup can be indicated continuously. | 07-02-2009 |
Young Yong Kim, Anyang-Si KR
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20110306346 | HANDOVER METHOD - A handover method according to one embodiment of the present invention comprises the steps of receiving the result of a cell measurement for a neighbor cell from a terminal, judging whether the neighbor cell is a near neighbor cell in accordance with the result of the cell measurement, calculating the ratio of the near neighbor cell to the total neighbor cells, and transmitting a command for a handover to a target cell to the terminal if the ratio exceeds the handover threshold value. The handover method of the present invention reduces interference between cells, and efficiently uses radio resources. | 12-15-2011 |
Young Yong Lee, Gyeonggi-Do KR
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20110205985 | DATA TRANSMISSION APPARATUS AND METHOD FOR A HIGH-SPEED PACKET ACCESS SYSTEM - A data transmission method for a high-speed packet access system includes: sending, by a user equipment, packet data containing scheduling information having size information of a packet buffer through an uplink channel to a base station, and sending quality indicator information and acknowledgement information through another uplink channel to the base station; determining, by the base station, the value of a turbo mode flag by comparing amounts of data stored in the packet buffer of the user equipment and a packet buffer of the base station respectively with preset thresholds; and deactivating, by the user equipment when the turbo mode flag of an order message contained in received control data, packet data reception and control data transmission, and redirecting transmit power of a specified transmitter to a packet data transmitter to increase transmit power of the packet data transmitter for faster packet data upload. | 08-25-2011 |
Young-Yong Kim, Seoul KR
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20080247391 | Method and apparatus for transmitting and receiving data in a communication system - A method for receiving multicast service data by a terminal in a communication system. The method includes receiving a pilot from a base station, measuring channel state information using the received pilot, and transmitting the channel state information to the base station; receiving a frame from the base station, and determining whether there is an error in the received frame; when no error has occurred in the received frame, determining whether the number of frames consecutively received without error is greater than or equal to a predetermined number; and when the number of frames consecutively received without error is greater than or equal to the predetermined number, transitioning to a non-feedback state where the terminal transmits no channel state information to the base station. The frame includes multicast service data. | 10-09-2008 |
20100322139 | Apparatus and method for simultaneous transmission scheduling in a multi-hop cellular system - An apparatus and method for simultaneous transmission scheduling in a multi-hop cellular system are provided, in which a base station presets simultaneous transmission relay station set information and transmits the simultaneous transmission relay station set information to relay stations managed by the base station, and an relay station receives the simultaneous transmission relay station set information from the base station, determines, upon receipt of a data frame from the base station, a state of the relay station preset in relation to a receiving relay station for the data frame by comparing an ID of the receiving relay station included in the data frame with the simultaneous transmission relay station set information, and operates according to the preset state. | 12-23-2010 |
Young-Yong Kim, Seongnam-Si KR
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20090196719 | INSERT FOR CARRIER BOARD OF TEST HANDLER - An insert for a carrier board of a test handler is disclosed. The insert pocket having hooks is detachably coupled to the insert body. The insert body can be reused. The latch apparatus is installed to the insert pocket, so that the damaged latch apparatus can be easily replaced. The insert has a plurality of holes in the bottom of the loading part thereof, to expose the leads of the semiconductor devices through the holes in the lower direction. Thus, the insert can load semiconductor devices regardless of the sizes of the semiconductor devices. | 08-06-2009 |
20110299488 | METHOD OF RADIO RESOURCE ALLOCATION AND METHOD OF NEIGHBOR INFORMATION TRANSMISSION IN WIRELESS COMMUNICATION SYSTEM - A method for radio resource allocation in a wireless communication system comprises the steps of: receiving a channel indicator for indicating the frequency band used by a neighboring base station from a gateway that controls at least one base station that accesses the core network of a wireless communication system via an IP network; assigning to an available channel list a frequency band remaining after the frequency band indicated by said channel indicator is excluded from the entire frequency band, wherein said entire frequency band is divided into a plurality of frequency bands, and said channel indicator comprises indices that indicate respective frequency bands; and selecting, as one's own channel, at least one frequency band from said available channel list. The method enables finding of frequency bands which are used by neighboring base stations, and selection and use of a frequency band which is not used by neighboring base stations, and thus can reduce the interference between neighboring base stations, and efficiently use limited wireless resources. | 12-08-2011 |
Young-Yong Lee, Suwon-Si KR
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20090055702 | APPARATUS AND METHOD FOR ALLOCATING MEMORY SPACE IN A MOBILE COMMUNICATION SYSTEM - An apparatus and method for receiving data when an HS-SCCH is not used in a mobile communication system are provided. In the apparatus and method, retransmission data is received, parameters including information about initial transmission data are acquired from the retransmission data, the initial transmission data is retrieved from a second-rate dematching input buffer based on the information about the initial transmission data, second-rate dematching is performed on the initial transmission data and the retransmission data, and first output data is generated by soft-combining the second rate-dematched initial transmission data with the second rate-dematched retransmission data. Accordingly, memory usage can be reduced. | 02-26-2009 |