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    • 8. 发明申请
    • CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF, AND FORWARD LINK FRAME STRUCTURE THEREOF
    • OFDM蜂窝系统中的小区搜索方法,帧传输方法及其链路帧结构
    • WO2008013339A1
    • 2008-01-31
    • PCT/KR2006/004546
    • 2006-11-02
    • ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEKIM, Il-GyuPARK, Hyeong-GeunCHANG, Kap-SeokKO, Young-JoYI, Hyo-SeokKIM, Young-HoonBANG, Seung-Chan
    • KIM, Il-GyuPARK, Hyeong-GeunCHANG, Kap-SeokKO, Young-JoYI, Hyo-SeokKIM, Young-HoonBANG, Seung-Chan
    • H04B7/26
    • H04L25/03343H04B1/70735H04J11/0069H04L25/03885H04L27/2613H04L27/2656H04L27/2657H04L27/2662H04L27/2675
    • Provided are a cell search method in an Orthogonal Frequency-Division Multiplexing (OFDM) cellular system, a frame transmission method thereof, and a forward link frame structure thereof, which are capable of reducing the amount of time and computational complexity that are required for a cell search. In the cell search method, a terminal searches for a target cell by using reception signals received from a plurality of base stations each transmitting a frame of its cell. The frame of each of the cells includes M sync channel symbols obtained by frequency-division multiplexing a primary sync channel code sequence, which is common in all the cells, and each secondary sync channel code sequence according to a hopping pattern of each of the cells, where the hopping pattern contains M secondary sync channel code sequences and has one-to-one correspondence to a code group to which scrambling code of the cell belongs, and M is a natural number equal to or greater than 2. An arbitrary hopping pattern used in the OFDM cellular system differs from the result of cyclically shifting the hopping pattern, other hopping patterns, or results of cyclically shifting the other hopping patterns. The method includes obtaining symbol synchronization for the reception signals by using a matched filter, detecting a hopping pattern of the target cell based on the obtained symbol synchronization, and detecting a code group of the target cell based on the detected hopping pattern.
    • 提供了正交频分复用(OFDM)蜂窝系统中的小区搜索方法,其帧传输方法及其前向链路帧结构,其能够减少所需的时间量和计算复杂度 小区搜索。 在小区搜索方法中,终端通过使用从发送其小区的帧的多个基站接收的接收信号来搜索目标小区。 每个单元的帧包括通过对所有小区中共同的主同步信道码序列进行频分复用获得的M个同步信道符号,以及根据每个小区的跳频模式的每个副同步信道码序列 ,其中跳频图案包含M个次同步信道码序列,并且与该小区的加扰码所属的码组具有一一对应关系,M是等于或大于2的自然数。任意跳频模式 在OFDM蜂窝系统中使用的不同之处在于循环移位跳频图案,其他跳频图案或循环移位其他跳频图案的结果。 该方法包括通过使用匹配滤波器来获得接收信号的符号同步,基于获得的符号同步来检测目标小区的跳频模式,并且基于检测到的跳频模式来检测目标小区的码组。