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公开(公告)号：BRPI0706535A2
公开(公告)日：2011-03-29
申请号：BRPI0706535
申请日：2007-05-30
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： CHANG KAP-SEOK , KIM IL-GYU , KIM NAM-IL , PARK HYEONG-GEUN , KIM YOUNG-HOON , BANG SEUNG-CHAN
IPC: H04B7/26
Abstract: An apparatus for generating a downlink signal and a cell search apparatus are disclosed. An apparatus for generating a downlink signal generates a downlink signal by one unique cell identification code group and a plurality of frame synchronization identification sequences, generates a downlink signal by a plurality of unique cell identification code groups and a plurality of frame synchronization identification sequences, or generates a downlink signal by a plurality of unique cell identification code groups and one frame synchronization identification sequence. A cell search apparatus obtains frame synchronization and identifies cells through a frame synchronization identification sequence and a unique cell identification code group.
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12.发明专利
公开(公告)号：GB2370725B
公开(公告)日：2004-08-11
申请号：GB0111897
申请日：2001-05-16
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： KIM IL-GYU , JEONG JAE-WOOK , BANG SEUNG-CHAN
IPC: H04B1/7113 , H04Q7/38
Abstract: There is disclosed an optimal search method of DS-CDMA signals consisted of time-multiplexed pilot symbols and control symbols capable of maximizing the performance of a receiver when the signal is searched or SNR is measured and apparatus thereof. Further, the present invention proposes a method of maximizing the performance of a searcher using basically both energy of the pilot symbol and the control symbol wherein coherent integral lengths for two regions are differentiated when the receiver searches the signals, and different weights are given to the two regions when a coherent correlation value is finally non-coherently added, and a method of effectively estimating SNR.
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13.发明公开CELL SEARCH METHOD, FORWARD LINK FRAME TRANSMISSION METHOD, APPARATUS USING THE SAME AND FORWARD LINK FRAME STRUCTURE 审中-公开小区搜索进程的推进LINES FRAME TRANSFER步骤中，该使用的设备和远期线路框架结构
公开(公告)号：EP1946461A4
公开(公告)日：2013-08-14
申请号：EP06812526
申请日：2006-11-10
Applicant: KOREA ELECTRONICS TELECOMM , SK TELECOM CO LTD , KT CORP
Inventor： KIM IL-GYU , PARK HYEONG-GEUN , KIM NAM-IL , CHANG KAP-SEOK , KIM YOUNG-HOON , BANG SEUNG-CHAN
CPC classification number: H04J11/0069 , H04J13/0066 , H04J13/0074 , H04L5/0016 , H04L5/0048 , H04L25/0226 , H04L27/2613 , H04L27/2655 , H04L27/2656 , H04L27/2657 , H04L27/2662
Abstract: Provided are a cell search method, a forward link frame transmission method, an apparatus using the methods, and a forward link frame structure. The cell search apparatus includes a sync acquirer acquiring synchronization of sync channel symbols using a sync channel of a forward link, and a group detector detecting at least one hopping codeword element belonging to a hopping codeword of a target cell from a forward link signal containing sync channel symbols sequence-hopped using a hopping codeword corresponding to a code group to which a scrambling code of each cell belongs based on the acquired synchronization, and detecting a code group of the target cell based on the detected hopping codeword element, wherein the hopping codewords are orthogonal to a cyclic shift operation. Accordingly, a cell search time and the complexity of the cell search can be reduced.
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14.发明公开METHOD OF TRANSMITTING ACK/NACK BIT SUPPORTING HARQ IN MOBILE COMMUNICATION SYSTEM SUPPORTING MULTI USER MIMO 有权METHOD FOR ACK / NACK比特的支持HARQ的移动传输，多用户MIMO支持通信系统
公开(公告)号：EP2156598A4
公开(公告)日：2014-07-02
申请号：EP08766322
申请日：2008-06-13
Applicant: KOREA ELECTRONICS TELECOMM , SAMSUNG ELECTRONICS CO LTD
Inventor： KIM IL-GYU , PARK HYEONG-GEUN , KO YOUNG-JO , CHANG KAPSEOK , YI HYOSEOK , KIM YOUNG-HOON , BANG SEUNG-CHAN
CPC classification number: H04W72/044 , H04B7/0417 , H04B7/0452 , H04B7/061 , H04B7/0623 , H04L1/1692 , H04L1/1812 , H04L1/1861 , H04L5/0016 , H04L5/0023 , H04L5/0055 , H04L27/18
Abstract: Provided is a method of efficiently transmitting an acknowledgement/negative acknowledgement (ACK/NACK) bit supporting hybrid automatic repeat request (HARQ) in a wireless communication system supporting multi-user multi-input and multi-output (MIMO). The method transmits the same downlink code and in-phase/quadrature (I/Q) multiplexed ACK/NACK bit to two mobile stations using the same uplink resource block. Accordingly, the method can efficiently transmit the ACK/NACK bit for multi-user MIMO and efficiently use downlink radio resources.
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15.发明公开CELL SEARCH METHOD, FORWARD LINK FRAME TRANSMISSION METHOD, APPARATUS USING THE SAME AND FORWARD LINK FRAME STRUCTURE 有权小区搜索方法，方法的前向链路帧，设备以及正确连接前车架结构传输
公开(公告)号：EP2044720A4
公开(公告)日：2010-09-01
申请号：EP07793239
申请日：2007-07-25
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： KIM IL-GYU , PARK HYEONG-GEUN , KO YOUNG-JO , CHANG KAPSEOK , YI HYOSEOK , KIM YOUNG-HOON , BANG SEUNG-CHAN
IPC: H04L7/10
CPC classification number: H04W56/001 , H04J11/0069 , H04J11/0093 , H04L5/0037 , H04L5/005 , H04L5/0053 , H04L27/2613 , H04L27/2655 , H04L27/2675 , H04W36/0061 , H04W36/08 , H04W56/00
Abstract: In a cellular system in which OFDM is used, a forward link synchronization channel, a common pilot channel structure, an initial cell searching method of a mobile station, and an adjacent cell searching method for handover are required. A method of transmitting a forward synchronization signal in a wireless communication system according to the present invention includes generating a frame comprised of a plurality of sync blocks; and transmitting the frame through a forward link, wherein the frame comprises primary synchronization channel sequences which provide timing information of the sync blocks and a plurality of secondary synchronization channel sequences which provide timing information of the frame, wherein a cell identifier is specified by a combination of the primary synchronization channel sequence and a hopping code word specified by the plurality of the secondary synchronization channel sequences Therefore, the cell searching time can be efficiently reduced in an OFDM system.
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Patent Agency Ranking16.发明公开
公开(公告)号：EP2186293A4
公开(公告)日：2012-05-23
申请号：EP08793159
申请日：2008-08-08
Applicant: KOREA ELECTRONICS TELECOMM , SAMSUNG ELECTRONICS CO LTD
Inventor： KO YOUNG-JO , PARK HYEONG-GEUN , KIM IL-GYU , CHANG KAPSEOK , YI HYOSEOK , KIM YOUNG-HOON , BANG SEUNG-CHAN
CPC classification number: H04J11/003 , H04L1/1861 , H04L5/0007 , H04L5/0053 , H04L27/2607 , H04W72/00
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公开(公告)号：EP2097994A4
公开(公告)日：2010-12-29
申请号：EP07746762
申请日：2007-05-30
Applicant: KOREA ELECTRONICS TELECOMM , SK TELECOM CO LTD , KT CORP
Inventor： CHANG KAP-SEOK , KIM IL-GYU , KIM NAM-IL , PARK HYEONG-GEUN , KIM YOUNG-HOON , BANG SEUNG-CHAN
CPC classification number: H04J11/0079 , H04L27/261 , H04L27/2613 , H04L27/2656 , H04L27/2685
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18.发明公开TRANSMISSION METHOD OF MOBILE STATION FOR RANDOM ACCESS CHANNEL DIVERSITY 有权ÜBERTRAGUNGSVEFAHREN一个移动台的RACH多样性
公开(公告)号：EP2008419A4
公开(公告)日：2014-06-11
申请号：EP07746073
申请日：2007-04-19
Applicant: KOREA ELECTRONICS TELECOMM , SAMSUNG ELECTRONICS CO LTD
Inventor： YI HYO-SEOK , KIM IL-GYU , PARK HYEONG-GEUN , KO YOUNG-JO , CHANG KAPSEOK , KIM YOUNG-HOON , BANG SEUNG-CHAN
CPC classification number: H04B7/0602 , H04B7/12 , H04L1/0006 , H04L1/06 , H04L1/1893 , H04L5/0053 , H04L5/023 , H04L27/2626 , H04W52/10 , H04W52/146 , H04W52/286 , H04W52/48
Abstract: A transmission method performed by a mobile station for random access channel (RACH) burst transmission diversity gain is provided. According to the method, a variety of combinations of a time switching transmit diversity (TSTD) technique, a frequency hopping technique, and a power ramping technique that are robust against fading channel environments are applied to transmission of an RACH burst, thereby increasing the probability of detecting an RACH signature of a base station. Also, by using the transmission parameters (subband frequencies, transmission antennas, power, etc.) which are used for successful transmission of an RACH burst, for transmission of a successive user packet data, reliable transmission of the successive user packet data can be performed.
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19.发明公开TRANSMISSION METHOD OF MOBILE STATION FOR RANDOM ACCESS CHANNEL DIVERSITY 审中-公开ÜBERTRAGUNGSVEFAHREN一个移动台的RACH多样性
公开(公告)号：EP2008418A4
公开(公告)日：2013-09-04
申请号：EP07746067
申请日：2007-04-19
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： YI HYO-SEOK , KIM IL-GYU , KO YOUNG-JO , CHANG KAPSEOK , PARK HYEONG-GEUN , KIM YOUNG-HOON , BANG SEUNG-CHAN
CPC classification number: H04W52/42 , H04B7/0617 , H04B7/0623 , H04B7/0689 , H04B7/12 , H04L1/0001 , H04L1/0006 , H04L1/06 , H04L1/1867 , H04L1/188 , H04L1/1893 , H04L5/0053 , H04L5/023 , H04L27/2626 , H04W52/286 , H04W52/48 , H04W74/085 , H04W74/0866
Abstract: A transmission method performed by a mobile station for random access channel (RACH) burst transmission diversity gain is provided. According to the method, by combining and using switching diversity by beam forming, frequency hopping, and power ramping, the probability that when the speed of a mobile station is low, the mobile station falls into a deep fading environment is lowered, thereby increasing the probability of detecting an RACH signature of the base station. Also, by using the transmission parameters (subbands, precoding matrixes, power, etc.) which are used for successful transmission of an RACH burst, for transmission of a successive user packet data, reliable transmission of the successive user packet data can be performed.
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20.发明公开METHOD FOR SIGNAL TRANSMISSION IN WIRELESS SYSTEMS 审中-公开VERFAHREN ZURSIGNALÜBERTRAGUNG在DRAHTLOSEN SYSTEMEN
公开(公告)号：EP2156589A4
公开(公告)日：2013-05-22
申请号：EP08766358
申请日：2008-06-16
Applicant: KOREA ELECTRONICS TELECOMM , SAMSUNG ELECTRONICS CO LTD
Inventor： KO YOUNG-JO , PARK HYEONG-GEUN , KIM IL-GYU , CHANG KAPSEOK , YI HYOSEOK , KIM YOUNG-HOON , BANG SEUNG-CHAN
CPC classification number: H04L5/0016 , H04J13/0074 , H04L5/0017 , H04L5/0019 , H04L5/0021 , H04L5/0037 , H04L5/0048 , H04L5/0053 , H04L5/0055
Abstract: Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly use time and frequency resources for efficient code hopping. The method includes allocating the same frequency-axis sequence and different time-axis sequences to a plurality of terminals by using a resource index according to a first slot in the first slot; and allocating different frequency-axis sequences and different time-axis sequences to the plurality of terminals by using a resource index according to a second slot in the second slot.
Abstract translation: 提供了一种在无线通信系统中形成信号的方法，其中多个终端通常使用用于有效跳码的时间和频率资源。 该方法包括通过使用根据第一时隙中的第一时隙的资源索引向多个终端分配相同的频率轴序列和不同的时间轴序列; 以及通过使用根据所述第二时隙中的第二时隙的资源索引，向所述多个终端分配不同的频率轴序列和不同的时间轴序列。
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