METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL
    26.
    发明申请
    METHOD FOR GENERATING DOWNLINK FRAME, AND METHOD FOR SEARCHING CELL 有权
    用于生成下行链路帧的方法,以及用于搜索小区的方法

    公开(公告)号:US20090252332A1

    公开(公告)日:2009-10-08

    申请号:US12487786

    申请日:2009-06-19

    IPC分类号: H04K1/04

    摘要: The present invention relates to a method for generating a downlink frame includes: generating a first short sequence and a second short sequence indicating cell group information; generating a first scrambling sequence determined by a first synchronization signal; generating a second scrambling sequence determined by a first short sequence and a third scrambling sequence determined by a second short sequence; scrambling the first short sequence with the first scrambling sequence; scrambling the second short sequence with at least the second scrambling sequence; scrambling the second short sequence with the first scrambling sequence; scrambling the first short sequence with at least the third scrambling sequence; and mapping one second synchronization signal including the first short sequence scrambled with the first scrambling sequence and the second short sequence scrambled with at least the second scrambling sequence and another second synchronization signal including the second short sequence scrambled with the first scrambling sequence and the first short sequence scrambled with at least the third scrambling sequence in the frequency domain.

    摘要翻译: 本发明涉及生成下行链路帧的方法,包括:产生指示小区组信息的第一短序列和第二短序列; 产生由第一同步信号确定的第一加扰序列; 产生由第二短序列确定的第一加扰序列和由第二短序列确定的第三加扰序列; 用第一加扰序列加扰第一短序列; 用至少第二加扰序列来加扰第二短序列; 用第一加扰序列加扰第二短序列; 用至少第三加扰序列对第一短序列进行加扰; 以及映射一个第二同步信号,该第一同步信号包括与第一加扰序列加密的第一短序列和至少第二加扰序列加扰的第二短序列,以及包括与第一加扰序列和第一加扰序列加扰的第二短序列的另一第二同步信号 至少在频域中的第三加扰序列加扰的序列。

    CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF, AND FORWARD LINK FRAME STRUCTURE
    27.
    发明申请
    CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF, AND FORWARD LINK FRAME STRUCTURE 有权
    OFDM蜂窝系统中的小区搜索方法,帧传输方法和前向链路帧结构

    公开(公告)号:US20090067370A1

    公开(公告)日:2009-03-12

    申请号:US12093428

    申请日:2006-11-10

    IPC分类号: H04W36/00 H04B1/713

    摘要: Provided are a cell search method, a frame transmission method thereof, and a forward link frame structure thereof. The cell search method used by a terminal to search a target cell using reception signals received from a plurality of base stations, each base station transmitting a frame of its cell, in an Orthogonal Frequency-Division Multiplexing (OFDM) cellular system comprising a plurality cells to which a cell-specific scrambling code is assigned includes: detecting a hopping pattern of the target cell using reception sync channel symbols, which are signals corresponding to sync channel symbol positions of the reception signals, wherein the frame of each cell comprises M sync channel symbols code-hopped according to a hopping pattern of the cell, where M is a natural number equal to or greater than 2, each hopping pattern containing M sync channel code sequences and respectively corresponding to each code group to which a scrambling code of each cell belongs, and an arbitrary hopping pattern used in the OFDM cellular system differs from a cyclically shifted result of the hopping pattern, other hopping patterns, or cyclically shifted results of the other hopping patterns; and detecting a code group of the target cell based on the detected hopping pattern. Accordingly, a cell search time and the complexity of the cell search can be reduced.

    摘要翻译: 提供了一种小区搜索方法,其帧发送方法及其前向链路帧结构。 终端使用的小区搜索方法,在使用从多个基站接收的接收信号来搜索目标小区,每个基站在正交频分复用(OFDM)蜂窝系统中的每个基站发送其小区的帧,所述正交频分复用(OFDM)蜂窝系统包括多个小区 分配小区特定扰码的步骤包括:使用接收同步信道符号来检测目标小区的跳频模式,所述接收同步信道符号是对应于接收信号的同步信道符号位置的信号,其中每个小区的帧包括M个同步信道 根据小区的跳频模式跳码的符号,其中M是等于或大于2的自然数,每个跳频模式包含M个同步信道码序列,并且分别对应于每个小区的扰码的每个码组 属于,并且在OFDM蜂窝系统中使用的任意跳频模式与跳频模式的循环移位结果不同 跳频图案或其他跳频图案的循环移位结果; 以及基于检测到的跳频图案来检测目标小区的代码组。 因此,可以减少小区搜索时间和小区搜索的复杂度。

    Cell search method, forward link frame transmission method, apparatus using the same and forward link frame structure
    30.
    发明授权
    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,前向链路帧传输方法,使用相同和前向链路帧结构的装置

    公开(公告)号:US08542571B2

    公开(公告)日:2013-09-24

    申请号:US12093284

    申请日:2006-11-10

    IPC分类号: H04L27/30

    摘要: 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.

    摘要翻译: 提供了小区搜索方法,前向链路帧发送方法,使用该方法的装置和前向链路帧结构。 小区搜索装置包括使用前向链路的同步信道获取同步信道符号的同步的同步获取器,以及从包含同步的前向链路信号检测属于目标小区的跳频码字的至少一个跳频码字元素的组检测器 基于所获取的同步,使用与每个小区的扰码对应的码组对应的跳频码字进行序列跳频,基于检测到的跳频码字元素检测目标小区的码组,其中跳频码字 与循环移位操作正交。 因此,可以减少小区搜索时间和小区搜索的复杂度。