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    TDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF
    1.
    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。

    2.
    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.

    5.
    发明专利
    未知

    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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