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    Procedimiento y aparato para buscar una célula
    61.
    发明专利
    Procedimiento y aparato para buscar una célula 未知

    公开(公告)号：ES2402572T3

    公开(公告)日：2013-05-06

    申请号：ES11161139

    申请日：2008-07-11

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： CHANG KAP SEOK ,  KIM IL GYU ,  PARK HYEONG GEUN ,  KO YOUNG JO ,  YI HYO SEOK ,  LEE MOON SIK ,  KIM YOUNG HOON ,  BANG SEUNG CHAN

    IPC: H04B7/26 ,  H04J11/00 ,  H04L27/26 ,  H04W56/00

    Abstract: Un procedimiento de búsqueda de una célula mediantUn procedimiento de búsqueda de una célula mediante una estación móvil en un sistema de comunicacióne una estación móvil en un sistema de comunicacióninalámbrico, comprendiendo el procedimiento: recibinalámbrico, comprendiendo el procedimiento: recibir una trama de enlace descendente que incluye unair una trama de enlace descendente que incluye una primera señal de sincronización y una segundaseña primera señal de sincronización y una segundaseñal de sincronización; e identificar una célula usanl de sincronización; e identificar una célula usando la primera señal de sincronización y la segundado la primera señal de sincronización y la segunda señal de sincronización,en el que la segunda seña señal de sincronización,en el que la segunda señal de sincronización incluye una primera secuencia l de sincronización incluye una primera secuencia corta (w0) aleatorizada conuna primera secuencia dcorta (w0) aleatorizada conuna primera secuencia de aleatorización (Pj,1) y una segunda secuencia coe aleatorización (Pj,1) y una segunda secuencia corta (w1) aleatorizada con unasegunda secuencia de rta (w1) aleatorizada con unasegunda secuencia de aleatorización (Sw0), estando determinada la primealeatorización (Sw0), estando determinada la primera secuencia de aleatorización (Pj,1) por la primera secuencia de aleatorización (Pj,1) por la primera señal de sincronización,usando el sistema de cora señal de sincronización,usando el sistema de comunicación inalámbrico una pluralidad de secuenciamunicación inalámbrico una pluralidad de secuencias cortas que se dividenmediante una pluralidad de s cortas que se dividenmediante una pluralidad de grupos, y estando determinada la segunda secuenciagrupos, y estando determinada la segunda secuencia de aleatorización (Sw0) por un grupo al que perte de aleatorización (Sw0) por un grupo al que pertenece laprimera secuencia corta, y la primera y segnece laprimera secuencia corta, y la primera y segunda secuencias cortas (w0, w1) indican la informaunda secuencias cortas (w0, w1) indican la información del grupo de células. ción del grupo de células.

    CARRIER AGGREGATION IN WIRELESS COMMUNICATION SYSTEM
    63.
    发明专利
    CARRIER AGGREGATION IN WIRELESS COMMUNICATION SYSTEM 未知

    公开(公告)号：CA2897384A1

    公开(公告)日：2011-07-14

    申请号：CA2897384

    申请日：2011-01-11

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： KO YOUNG JO ,  NOH TAE GYUN ,  LEE KYOUNG SEOK ,  SEO BANG WON ,  JEONG BYUNG JANG ,  LEE HEESOO

    IPC: H04W72/04 ,  H04J11/00

    Abstract: A method for wireless communication method by a user equipment (UE). The method involves multiplying a plurality of data symbols with a first scrambling sequence and a first orthogonal sequence, mapping the data symbols multiplied by the first scrambling sequence and the first orthogonal sequence to a first slot, multiplying a plurality of data symbols with a second scrambling sequence and a second orthogonal sequence and mapping the data symbols multiplied by the second scrambling sequence and the second orthogonal sequence to a second slot. The method further involves transmitting the first slot and the second slot to a base station. The first slot includes five DFT-S-OFDM symbols to transmit the data symbols and the second slot includes four DFT-S-OFDM symbols to transmit the data symbols. The first orthogonal sequence is selected from first predefined sequences and the second orthogonal sequence is selected from second predefined sequences. The sequence index of the first orthogonal sequence is the same as the sequence index of the second orthogonal sequence .

    Method for generating downlink frame, and method for searching cell
    66.
    发明专利
    Method for generating downlink frame, and method for searching cell 未知

    公开(公告)号：AU2008273134A1

    公开(公告)日：2009-01-15

    申请号：AU2008273134

    申请日：2008-07-11

    Applicant: KOREA ELECTRONICS TELECOMM

    Inventor： LEE MOON SIK ,  YI HYO SEOK ,  KO YOUNG JO ,  KIM YOUNG HOON ,  PARK HYEONG GEUN ,  BANG SEUNG CHAN ,  CHANG KAP SEOK ,  KIM IL GYU

    IPC: H04B7/26 ,  H04L12/28

    Abstract: The present invention relates to a method of searching for a cell by a mobile station in a wireless communication system, wherein the wireless communication system uses a plurality of short sequences grouped into a plurality of short sequence groups, the method comprising: receiving a downlink frame including a primary synchronization signal and a secondary synchronization signal, wherein the secondary synchronization signal contains cell identity group information and the primary synchronization signal contains cell identity information within a cell identity group; and searching for a cell using the cell identity group information in the secondary synchronization signal and the cell identity information in the primary synchronization signal, wherein the secondary synchronization signal comprises a first short sequence and a second short sequence, the first short sequence is scrambled with a first scrambling sequence, and the second short sequence is scrambled with a second scrambling sequence, wherein the first scrambling sequence is determined based on the cell identity information contained in the primary synchronization signal, and the second scrambling sequence is determined based on a short sequence group to which the first short sequence is assigned, the short sequence group being determined based on a remainder of dividing an index of the first short sequence by 8.

    TDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF
    68.
    发明公开
    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：KR20070099483A

    公开(公告)日：2007-10-09

    申请号：KR20070032903

    申请日：2007-04-03

    Applicant: KOREA ELECTRONICS TELECOMM

    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

    IPC: H04L27/26 ,  H04B7/26 ,  H04J11/00 ,  H04L7/10

    CPC classification number: H04J11/0073 ,  H04J11/0076 ,  H04L5/0016 ,  H04L5/0078 ,  H04L27/2657 ,  H04W48/16

    Abstract: A cell searching method in an OFDM(Orthogonal Frequency Division Multiplexing) cellular system, a frame transmitting method, and a frame transmitter are provided to reduce a cell searching time in a mobile terminal by simplifying a cell searching device. A forward link frame has duration of 10ms and includes 20 sub-frames(110). Each of the sub-frames has a duration of 0.5ms and includes 7 OFDM symbols(120). A primary synchronous channel OFDM symbol(100-A) and a secondary synchronous channel OFDM symbol(101-A) are included in every ten sub-frames. Two first and second synchronous channel OFDM symbols are included in one frame. A repetition period(130) of the synchronous channel symbols is equal to a sum of lengths of ten sub-frames. When first and second synchronous channels are coupled with each other according to a TDM(Time Division Multiplexing) scheme, the first and second synchronous channels are arranged to be adjacent to each other, such that a channel estimation value of the first synchronous channel is used, while the second synchronous channel is coherently demodulated.

    Abstract translation: 提供OFDM（正交频分复用）蜂窝系统，帧发送方法和帧发送机中的小区搜索方法，通过简化小区搜索装置来减少移动终端中的小区搜索时间。 前向链路帧具有10ms的持续时间并且包括20个子帧（110）。 每个子帧具有0.5ms的持续时间并且包括7个OFDM符号（120）。 在每十个子帧中包括主同步信道OFDM符号（100-A）和辅同步信道OFDM符号（101-A）。 一个帧中包括两个第一和第二同步信道OFDM符号。 同步信道符号的重复周期（130）等于十个子帧的长度之和。 当根据TDM（时分复用）方案将第一和第二同步信道彼此耦合时，第一和第二同步信道被布置为彼此相邻，使得使用第一同步信道的信道估计值 而第二同步信道被相干解调。

    FDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF
    69.
    发明公开
    FDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF 审中-公开
    OFDM系统中的基于FDM的小区搜索方法，其帧传输方法及其系统

    公开(公告)号：KR20070099477A

    公开(公告)日：2007-10-09

    申请号：KR20070032811

    申请日：2007-04-03

    Applicant: KOREA ELECTRONICS TELECOMM

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

    IPC: H04L27/26 ,  H04B7/26 ,  H04J11/00

    CPC classification number: H04J11/0069 ,  H04B7/2621

    Abstract: A cell searching method in an OFDM(Orthogonal Frequency Division Multiplexing) cellular system, a frame transmitting method, and a frame transmitter are provided to reduce a cell searching time in the OFDM cellular system by reducing a configuration complexity of a cell searching unit. A synchronization detector(622) includes correlation calculators(701-A,701-B), a signal coupler(702), an accumulation unit(703), and a timing detector(710). Outputs from the correlation calculators are accumulated in the accumulation unit through the signal coupler. The correlation calculator generates 4800 units in respective synchronization blocks. The timing detector detects a position of a sample having a peak value from correlation values, and determines the detector sample position as synchronous channel symbol timing. The accumulation unit adds the respective correlation values for the sample positions to the correlation value corresponding to a position, which is spaced from the respective sample positions by a length of the synchronization block.

    Abstract translation: 提供OFDM（正交频分复用）蜂窝系统，帧发送方法和帧发送机中的小区搜索方法，通过减小小区搜索单元的配置复杂度来减少OFDM蜂窝系统中的小区搜索时间。 同步检测器（622）包括相关计算器（701-A，701-B），信号耦合器（702），累积单元（703）和定时检测器（710）。 来自相关计算器的输出通过信号耦合器累积在累积单元中。 相关计算器在相应的同步块中产生4800个单元。 定时检测器从相关值检测具有峰值的样本的位置，并将检测器采样位置确定为同步信道符号定时。 累积单元将样本位置的各个相关值相加于与各个采样位置间隔一个同步块的长度的位置相对应的相关值。

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