公开(公告)号：ES2380065T3

公开(公告)日：2012-05-08

申请号：ES10160271

申请日：2008-07-18

Applicant: KOREA ELECTRONICS TELECOMM

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

IPC: H04L7/04 ,  H04B1/707 ,  H04J13/00 ,  H04J13/10 ,  H04L7/02 ,  H04L27/26

Abstract: Un procedimiento de generación de una trama de enlace descendente (110) que incluye una señal de sincronización primaria y señales de sincronización secundarias, que comprende: generación de una primera secuencia corta y una segunda secuencia corta que indican la información de grupo de celdas; generación de una primera secuencia de aleatorización y una segunda secuencia de aleatorización determinadas por la señal de sincronización primaria; generación de una tercera secuencia de aleatorización determinada por un grupo de secuencias cortas -el sistema de comunicación inalámbrica usa una pluralidad de secuencias cortas y la pluralidad de secuencias cortas están agrupadas en una pluralidad de grupos de secuencia corta- a la que se asigna la primera secuencia corta y una cuarta secuencia de aleatorización determinada por un grupo de secuencias cortas al que se asigna la segunda secuencia corta; aleatorización de la primera secuencia corta con la primera secuencia de aleatorización y aleatorización de la segunda secuencia corta con la segunda secuencia de aleatorización y la tercera secuencia de aleatorización; aleatorización de la segunda secuencia corta con la primera secuencia de aleatorización y aleatorización de la primera secuencia corta con la segunda secuencia de aleatorización y la cuarta secuencia de aleatorización; y correspondencia de la señal de sincronización secundaria que incluye la primera secuencia corta aleatorizada con la primera secuencia de aleatorización, la segunda secuencia corta aleatorizada con la segunda secuencia de aleatorización y la tercera secuencia de aleatorización, la segunda secuencia corta aleatorizada con la primera secuencia de aleatorización y la primera secuencia corta aleatorizada con la segunda secuencia de aleatorización y la cuarta secuencia de aleatorización a un dominio de frecuencias.

公开(公告)号：AT528867T

公开(公告)日：2011-10-15

申请号：AT08778752

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 ,  H04L27/26

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.

公开(公告)号：ES2356030T3

公开(公告)日：2011-04-04

申请号：ES08778879

申请日：2008-07-18

Applicant: KOREA ELECTRONICS TELECOMM

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

IPC: H04L7/04 ,  H04B1/707 ,  H04J13/00 ,  H04J13/10 ,  H04L7/02 ,  H04L27/26

Abstract: Un procedimiento de generación de una trama de enlace descendente (110) que incluye una señal de sincronización primaria y una señal de sincronización secundaria en un sistema de comunicación inalámbrica que comprende: generar una primera secuencia corta y una segunda secuencia corta que indican información del grupo de celdas; generar una primera secuencia de cifrado y una segunda secuencia de cifrado determinadas por la señal de sincronización primaria; generar una tercera secuencia de cifrado determinada por un grupo de secuencias cortas el sistema de comunicación inalámbrica usa una pluralidad de secuencias cortas y la pluralidad de secuencias cortas está agrupada en una pluralidad de grupos de secuencias cortas al que está asignado la primera secuencia corta; cifrar la primera secuencia corta con la primera secuencia de cifrado y cifrar la segunda secuencia corta con la segunda secuencia de cifrado y la tercera secuencia de cifrado; y modular la señal de sincronización secundaria que incluye la primera secuencia corta cifrada y la 15 segunda secuencia corta cifrada a un dominio de la frecuencia.

公开(公告)号：DE602008003768D1

公开(公告)日：2011-01-13

申请号：DE602008003768

申请日：2008-07-18

Applicant: KOREA ELECTRONICS TELECOMM

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

IPC: H04L7/02 ,  H04B1/707 ,  H04J13/00 ,  H04J13/10 ,  H04L27/26

公开(公告)号：AU2008273132A1

公开(公告)日：2009-01-15

申请号：AU2008273132

申请日：2008-07-11

Applicant: KOREA ELECTRONICS TELECOMM

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

IPC: H04B7/26

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.

公开(公告)号：EP2179556A4

公开(公告)日：2014-12-24

申请号：EP08766564

申请日：2008-06-24

Applicant: KOREA ELECTRONICS TELECOMM ,  SAMSUNG ELECTRONICS CO LTD

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

IPC: H04L29/02 ,  H04B1/69 ,  H04J11/00 ,  H04J13/16 ,  H04L27/26 ,  H04W56/00

CPC classification number: H04J11/0069 ,  H04J11/0076 ,  H04J13/16 ,  H04L5/0007 ,  H04L5/0053 ,  H04L27/26 ,  H04L27/261 ,  H04W48/16

Abstract: The present invention relates to a method of generating a downlink frame. The method of generating the downlink frame includes generating a first sequence and a second sequence for identifying cell groups; generating a first scrambling sequence and a second scrambling sequence that are one-to-two mapped to the sequence number of the primary synchronization signal; scrambling the first sequence with the first scrambling sequence and scrambling the second sequence with the second scrambling sequence; and generating a secondary synchronization signal including the scrambled first sequence and second sequence and mapping the secondary synchronization signal to a frequency domain.

Abstract translation: 本发明涉及一种生成下行链路帧的方法。 生成下行链路帧的方法包括生成用于识别小区组的第一序列和第二序列; 产生映射到主同步信号的序列号的一对二的第一加扰序列和第二加扰序列; 用第一加扰序列对第一序列进行加扰，并用第二加扰序列加扰第二序列; 以及生成包括所述加扰的第一序列和第二序列的次同步信号，并将所述次同步信号映射到频域。

公开(公告)号：KR20070102965A

公开(公告)日：2007-10-22

申请号：KR20070037568

申请日：2007-04-17

Applicant: KOREA ELECTRONICS TELECOMM

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

IPC: H04L27/26 ,  H04B7/02 ,  H04B7/26

CPC classification number: H04L27/2601 ,  H04L5/0007 ,  H04L5/0032

Abstract: A method for arranging distributed sub-channels in a multicarrier transmission system is provided to improve transmission diversity efficiency by using two sub-carriers or symbols as a single basic unit. Two neighboring carriers, which are adjacent to each other on a frequency axis, are grouped into a single basic unit, and the basic units are distributed on a channel in a multicarrier transmission system. The channel is arranged, such that the basic units are adjacent each other on the frequency axis, while the basic units are apart from each other by a distance greater than one symbol interval on a time axis. Alternatively, two symbol intervals, which are adjacent to each other on the time axis, are grouped to form the single basic unit.

Abstract translation: 提供一种用于在多载波传输系统中布置分布式子信道的方法，以通过使用两个子载波或符号作为单个基本单元来提高传输分集效率。 在频率轴上彼此相邻的两个相邻载波被分组为单个基本单元，并且基本单元分布在多载波传输系统中的信道上。 通道布置成使得基本单元在频率轴上彼此相邻，而基本单元在时间轴上彼此分开大于一个符号间隔的距离。 或者，在时间轴上彼此相邻的两个符号间隔被分组以形成单个基本单元。

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。

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。

公开(公告)号：EP2127189A4

公开(公告)日：2010-03-17

申请号：EP08778878

申请日：2008-07-18

Applicant: KOREA ELECTRONICS TELECOMM

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

IPC: H04L7/04 ,  H04B1/707 ,  H04J13/00 ,  H04J13/10 ,  H04L7/02 ,  H04L27/26

CPC classification number: H04W48/16 ,  H04B1/70735 ,  H04B7/2656 ,  H04J11/0069 ,  H04L7/043 ,  H04L27/2613 ,  H04L27/2655 ,  H04W56/00 ,  H04W72/042 ,  H04W72/0446 ,  H04W88/08

Abstract: The present invention proposes a method of generating a downlink frame including a primary synchronization signal and secondary synchronization signals with which interference between sectors can be reduced so as to improve the performance for searching cells. The method comprises the steps of generating a first short sequence and a second short sequence, generating a first scrambling sequence and a second scrambling sequence by the primary synchronization signal, generating a third scrambling sequence determined by a short sequence group to which the first short sequence is assigned and a fourth scrambling sequence determined by a short sequence group to which the second short sequence is assigned, scrambling the first short sequence with the first scrambling sequence and scrambling the second short sequence with the second scrambling sequence and the third scrambling sequence, scrambling the second short sequence with the first scrambling sequence and scrambling the first short sequence with the second scrambling sequence and the fourth scrambling sequence, and mapping the secondary synchronization signal that including the scambled short sequences and the fourth to a frequency domain.