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    METHOD AND APPARATUS FOR GENERATING AND RECEIVING OFDM SYMBOL
    2.
    发明申请
    METHOD AND APPARATUS FOR GENERATING AND RECEIVING OFDM SYMBOL 审中-公开
    用于生成和接收OFDM符号的方法和装置

    公开(公告)号：WO2007081173A3

    公开(公告)日：2008-09-25

    申请号：PCT/KR2007000218

    申请日：2007-01-12

    Applicant: KOREA ELECTRONICS TELECOMM ,  KIM NAM-IL ,  KIM IL-GYU ,  JWA HYE-KYUNG ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN

    Inventor： KIM NAM-IL ,  KIM IL-GYU ,  JWA HYE-KYUNG ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN

    IPC: H04J11/00

    CPC classification number: H04L27/2621

    Abstract: The present invention provides an OFDM symbol generating apparatus. The OFDM symbol generating apparatus generates a plurality of weight-applied symbol groups by applying a plurality of weights to a digital modulation symbol group, and generates a plurality of IFFT symbol groups by performing an IFFT operation on the plurality of weight-applied symbol groups. Subsequently, an IFFT symbol group having the minimum PAPR is selected from among the plurality of IFFT symbol groups such that a characteristic of a PAPR can be improved without reducing data transmission speed.

    Abstract translation: 本发明提供一种OFDM符号生成装置。 OFDM符号生成装置通过对数字调制符号组应用多个权重来生成多个加权的符号组，并通过对多个加权符号组进行IFFT运算来生成多个IFFT符号组。 随后，从多个IFFT符号组中选择具有最小PAPR的IFFT符号组，使得可以在不降低数据传输速度的情况下提高PAPR的特性。

    TDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF
    3.
    发明申请
    TDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF 审中-公开
    OFDM蜂窝系统中的基于TDM的小区搜索方法，其帧传输方法及其系统

    公开(公告)号：WO2007114638A2

    公开(公告)日：2007-10-11

    申请号：PCT/KR2007001627

    申请日：2007-04-03

    Applicant: KOREA ELECTRONICS TELECOMM ,  KIM IL-GYU ,  PARK HYEONG-GEUN ,  CHANG KAP-SEOK ,  KO YOUNG-JO ,  YI HYO-SEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN ,  HWANG SEUNG-KU

    Inventor： KIM IL-GYU ,  PARK HYEONG-GEUN ,  CHANG KAP-SEOK ,  KO YOUNG-JO ,  YI HYO-SEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN ,  HWANG SEUNG-KU

    CPC classification number: H04L5/0053 ,  H04J11/0069 ,  H04L5/0016 ,  H04L27/2647 ,  H04W8/005 ,  H04W48/08 ,  H04W48/16 ,  H04W84/042 ,  H04W88/08

    Abstract: A cell searching method in a time-division multiplexing (TDM)-based Orthogonal Frequency-Division Multiplexing (OFDM) cellular system having a primary synchronization channel and secondary synchronization channel, and a frame transmission method and system thereof are provided. In the cell searching method in an OFDM cellular system including a plurality of cells allocated with scrambling codes unique to the cells, wherein each base station transmits a frame of each cell and a terminal searches for a target cell by using the frame received from the base station, the cell searching method includes: acquiring Sync-block synchronization corresponding to a period of a primary synchronization channel symbol included in the frame received by the terminal and a primary synchronization channel sequence number by using the primary synchronization channel symbol; and acquiring a frame boundary of the frame and the target cell of the terminal based on the Sync-block synchronization and the primary synchronization channel sequence number by using a secondary synchronization channel symbol included in the frame received by the terminal. Accordingly, the synchronization can be acquired with low complexity.

    Abstract translation: 提供了具有主同步信道和辅同步信道的基于时分复用（TDM）的正交频分复用（OFDM）蜂窝系统中的小区搜索方法及其帧传输方法和系统。 在包括分配有该小区唯一的扰码的多个小区的OFDM蜂窝系统的小区搜索方法中，每个基站发送每个小区的帧，终端通过使用从基站接收到的帧来搜索目标小区 小区搜索方法包括：通过使用主同步信道符号获取与由终端接收的帧中包括的主同步信道符号的周期相对应的同步块同步和主同步信道序列号; 以及通过使用由所述终端接收到的帧中包括的辅同步信道符号，基于所述同步块同步和所述主同步信道序列号，获取所述帧和所述终端的目标小区的帧边界。 因此，可以以低复杂度获取同步。

    APPARATUS AND METHOD FOR OBTAINING SYMBOL TIMING SYNCHRONIZATION ROBUST TO FREQUENCY OFFSET IN CELL SEARCH OF WIRELESS COMMUNICATION SYSTEM
    4.
    发明申请
    APPARATUS AND METHOD FOR OBTAINING SYMBOL TIMING SYNCHRONIZATION ROBUST TO FREQUENCY OFFSET IN CELL SEARCH OF WIRELESS COMMUNICATION SYSTEM 审中-公开
    用于获取符号时序同步的方法和方法对无线通信系统的细胞搜索中的频率偏移

    公开(公告)号：WO2009136753A3

    公开(公告)日：2012-05-10

    申请号：PCT/KR2009002422

    申请日：2009-05-08

    Applicant: KOREA ELECTRONICS TELECOMM ,  CHANG KAPSEOK ,  KIM YOUNG-HOON ,  KIM SEONG RAG ,  WON SEUCK HO ,  KIM KEUN YOUNG

    Inventor： CHANG KAPSEOK ,  KIM YOUNG-HOON ,  KIM SEONG RAG ,  WON SEUCK HO ,  KIM KEUN YOUNG

    IPC: H04L27/26

    CPC classification number: H04L27/2662 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2614 ,  H04L27/2657 ,  H04L27/2684

    Abstract: Disclosed is an apparatus for obtaining symbol synchronization which is robust to a frequency offset in a cell search of a wireless communication system. The symbol synchronization obtaining apparatus may include a sequence generator to generate a base sequence for obtaining the symbol synchronization, a synchronization pattern generator to generate a modified sequence based on the base sequence, and to generate a synchronization pattern by combining the modified sequence and the base sequence, a frequency mapping unit to perform mapping of transmission information to a time area and a frequency area, based on the synchronization pattern, for generating a transmission frame, and a transmitting unit to transmit the transmission frame.

    Abstract translation: 公开了一种用于获得对于无线通信系统的小区搜索中的频率偏移是鲁棒的符号同步的装置。 符号同步获取装置可以包括产生用于获得符号同步的基本序列的序列发生器，基于该基本序列生成修改序列的同步模式生成器，以及通过将修改的序列与基础组合来生成同步模式 序列，频率映射单元，用于基于所述同步模式来执行传输信息到时间区域和频率区域的映射，以产生传输帧;以及发送单元，用于发送所述传输帧。

    METHOD AND APPARATUS FOR FORMING SIGNALS IN WIRELESS COMMUNICATION SYSTEMS
    5.
    发明申请
    METHOD AND APPARATUS FOR FORMING SIGNALS IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
    在无线通信系统中形成信号的方法和装置

    公开(公告)号：WO2009020376A8

    公开(公告)日：2010-03-25

    申请号：PCT/KR2008004645

    申请日：2008-08-08

    Applicant: KOREA ELECTRONICS TELECOMM ,  SAMSUNG ELECTRONICS CO LTD ,  KO YOUNG-JO ,  PARK HYEONG-GEUN ,  KIM IL-GYU ,  CHANG KAPSEOK ,  YI HYOSEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN

    Inventor： KO YOUNG-JO ,  PARK HYEONG-GEUN ,  KIM IL-GYU ,  CHANG KAPSEOK ,  YI HYOSEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN

    IPC: H04L29/06

    CPC classification number: H04J11/003 ,  H04L1/1861 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2607 ,  H04W72/00

    Abstract: Provided is method of forming a signal in a wireless communication system in which a plurality of terminals commonly use a resource in the time domain and the frequency domain. The method includes multiplying a signal to be transmitted by a frequency domain orthogonal code symbol corresponding to a first cyclic shift index in a first slot to be transmitted to a base station, wherein the multiplying is performed by a first terminal and a second terminal; and multiplying information to be transmitted by a frequency domain orthogonal code symbol corresponding to a second cyclic index that is different from the first cyclic index of the first slot to be transmitted to the base station, in a second slot, wherein the multiplying is performed by the first terminal and the second terminal.

    Abstract translation: 提供了在多个终端在时域和频域中共同使用资源的无线通信系统中形成信号的方法。 该方法包括将待发送的信号乘以与要发送到基站的第一时隙中的对应于第一循环移位索引的频域正交码符号，其中乘法由第一终端和第二终端执行; 以及在第二时隙中将要发送的频率乘以与要发送的第一时隙的第一循环索引不同的第二循环索引的频域正交码符号发送到第二时隙，其中，乘法由 第一终端和第二终端。

    METHOD AND APPARATUS FOR FORMING SIGNALS IN WIRELESS COMMUNICATION SYSTEMS
    7.
    发明申请
    METHOD AND APPARATUS FOR FORMING SIGNALS IN WIRELESS COMMUNICATION SYSTEMS 审中-公开
    在无线通信系统中形成信号的方法和装置

    公开(公告)号：WO2009020376A2

    公开(公告)日：2009-02-12

    申请号：PCT/KR2008004645

    申请日：2008-08-08

    Applicant: KOREA ELECTRONICS TELECOMM ,  KO YOUNG-JO ,  PARK HYEONG-GEUN ,  KIM IL-GYU ,  CHANG KAPSEOK ,  YI HYOSEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN

    Inventor： KO YOUNG-JO ,  PARK HYEONG-GEUN ,  KIM IL-GYU ,  CHANG KAPSEOK ,  YI HYOSEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN

    IPC: H04L29/06

    CPC classification number: H04J11/003 ,  H04L1/1861 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/2607 ,  H04W72/00

    Abstract: Provided is method of forming a signal in a wireless communication system in which a plurality of terminals commonly use a resource in the time domain and the frequency domain. The method includes multiplying a signal to be transmitted by a frequency domain orthogonal code symbol corresponding to a first cyclic shift index in a first slot to be transmitted to a base station, wherein the multiplying is performed by a first terminal and a second terminal; and multiplying information to be transmitted by a frequency domain orthogonal code symbol corresponding to a second cyclic index that is different from the first cyclic index of the first slot to be transmitted to the base station, in a second slot, wherein the multiplying is performed by the first terminal and the second terminal.

    Abstract translation: 提供了一种在无线通信系统中形成信号的方法，其中多个终端共同使用时域和频域中的资源。 该方法包括：将要发送的信号乘以与第一时隙中的第一循环移位索引对应的频域正交码符号以发送给基站，其中所述乘法由第一终端和第二终端执行; 以及在第二时隙中乘以由要与所述第一时隙的第一循环索引不同的第二循环索引对应的频域正交码符号发送到所述基站的信息，其中所述乘法是通过 第一终端和第二终端。

    CELL SEARCH METHOD, FORWARD LINK FRAME TRANSMISSION METHOD, APPARATUS USING THE SAME AND FORWARD LINK FRAME STRUCTURE
    8.
    发明专利
    CELL SEARCH METHOD, FORWARD LINK FRAME TRANSMISSION METHOD, APPARATUS USING THE SAME AND FORWARD LINK FRAME STRUCTURE 未知

    公开(公告)号：CA2642017A1

    公开(公告)日：2008-01-31

    申请号：CA2642017

    申请日：2007-07-25

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： KIM IL-GYU ,  CHANG KAPSEOK ,  YI HYOSEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN ,  KO YOUNG-JO ,  PARK HYEONG-GEUN

    IPC: H04L7/10

    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.

    9.
    发明专利
    未知

    公开(公告)号：BRPI0706360A2

    公开(公告)日：2011-03-22

    申请号：BRPI0706360

    申请日：2007-05-25

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： CHANG KAP-SEOK ,  KIM IL-GYU ,  KIM NAM-IL ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN

    IPC: H04L27/26

    Abstract: The invention provides a method of generating a downlink signal and searching a cell on the basis of the downlink signal in an OFDM-based cellular system. The downlink signal includes a plurality of synchronization blocks each having a plurality of sub-frames, and a synchronization pattern composed of a combination of a cell group identification code for identifying a cell group and a frame synchronization identification code for indicating a frame start point is generated in each of the synchronization blocks. Different frame synchronization identification codes are allocated to the synchronization blocks.

    Métodos e equipamento terminal para transmitir informações de controle de uplink e recebê-las em estação de base terminal
    10.
    发明专利
    Métodos e equipamento terminal para transmitir informações de controle de uplink e recebê-las em estação de base terminal 未知

    公开(公告)号：BRPI0823509A2

    公开(公告)日：2015-06-09

    申请号：BRPI0823509

    申请日：2008-06-23

    Applicant: KOREA ELECTRONICS TELECOMM ,  KT CORP

    Inventor： KO YOUNG-JO ,  PARK HYEONG-GEUN ,  KIM IL-GYU ,  CHANG KAPSEOK ,  YI HYOSEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN

    IPC: H04L1/12

    Abstract: Métodos e equipamento terminal para transmitir informações de controle de uplink e recebê-las em estação de base terminal. Quando uma pluralidade de terminais compartilha os mesmos recursos num sistema de comunicações sem fio e quando controlam informações tais como informações de recebimento/confirmação negativa (ack/nak) ou são transmitidas informações de programação, é exigido realizar eficientemente um método de multiplexação de divisão de código (cdm) para distinguir a pluralidade determinais. Em particular, é necessário desenvolver um método pelo qual possa ser selecionada e usada uma seqúéneia de códigos de cdm de acordo com cada condição de célula. É proporcionado um método deformação de um sinal num sistema de comunicações sem fio em que uma pluralidade de terminais comumente compartilha recursos de frequência e de tempo. O método inclui as operações de recebimento de informações de condição numa célula; selecionar uma de uma pluralidade de seqúências ortogonais de domínio de tempo tendo comprimentos diferentes, de acordo com as informações de condição; e alocar a seqüência ortogonal de domínio de tempo selecionada para um bloco de símbolos de sinal de controle.

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