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：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.

公开(公告)号：EP2127188A4

公开(公告)日：2010-03-17

申请号：EP08778876

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.

公开(公告)号：EP2547008A4

公开(公告)日：2016-08-24

申请号：EP11753660

申请日：2011-03-11

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KWON HYOUNG JIN ,  KIM YONG SUN ,  CHANG KAP SEOK ,  HONG SEUNG EUN ,  JIN SUNG GEUN ,  LEE WOO YONG ,  CHUNG HYUN KYU

IPC: H04B7/155 ,  H04W28/16 ,  H04W72/04 ,  H04W74/04 ,  H04W84/12

CPC classification number: H04W28/26 ,  H04B7/15542 ,  H04B7/15557 ,  H04B7/15592 ,  H04W16/26 ,  H04W28/16 ,  H04W40/22 ,  H04W72/0406 ,  H04W84/047 ,  H04W84/12 ,  H04W88/04

Abstract: Provided is a communication method of a coordinator in a wireless networks system that uses a reservation-based media access control (MAC). The communication method includes receiving, from a source device, a frame that requests a reservation resource for a relay device, to enable a frame that the source device transmits to a destination device to be relayed via the relay device, and allocating the reservation resource for the relay device, in response to the request.

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：EP2544382A4

公开(公告)日：2013-09-04

申请号：EP11750943

申请日：2011-03-04

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： HONG SEUNG EUN ,  CHANG KAP SEOK ,  KWON HYOUNG JIN ,  KIM YONG SUN ,  LEE WOO YONG

IPC: H04B7/14 ,  H04B7/155 ,  H04B17/40 ,  H04W74/04

CPC classification number: H04B5/0081 ,  H04B7/0408 ,  H04B7/15592 ,  H04L12/28 ,  H04W24/10 ,  H04W36/0005 ,  H04W36/08 ,  H04W36/30 ,  H04W40/22 ,  H04W76/023 ,  H04W88/085

Abstract: Provided is an apparatus and method for performing a wideband short-range wireless communication using a directional antenna in a millimeter wave band, and the method for wideband short-range wireless communication according to an embodiment may determine a change of a relay operation type based on a link quality between a source node and a relay node, a link quality between the relay node and the destination node, and a link quality between the source node and the destination node, transmit a relay operation change (ROC) request message in response to a determination of the change of the relay operation type, and receive an ROC response message corresponding to the ROC request message.

Abstract translation: 提供了一种用于使用毫米波波段中的定向天线来执行宽带短距离无线通信的设备和方法，并且根据实施例的用于宽带短距离无线通信的方法可以基于以下来确定中继操作类型的改变： 源节点与中继节点之间的链路质量，中继节点与目的节点之间的链路质量以及源节点与目的节点之间的链路质量，响应于中继操作改变（ROC）请求消息而发送中继操作改变（ROC）请求消息 确定中继操作类型的改变，并且接收对应于ROC请求消息的ROC响应消息。

公开(公告)号：EP2538580A4

公开(公告)日：2014-03-26

申请号：EP11744874

申请日：2011-02-16

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： CHANG KAP SEOK ,  KWON HYOUNG JIN ,  JIN SUNG GEUN ,  KIM YONG SUN ,  HONG SEUNG EUN ,  LEE WOO YONG ,  CHUNG HYUN KYU

IPC: H04B7/14 ,  H04W72/08 ,  H04W74/04

CPC classification number: H04B7/15592 ,  H04B7/155 ,  H04W24/08 ,  H04W72/085 ,  H04W72/1205 ,  H04W74/04 ,  H04W84/047

Abstract: Provided is an apparatus and method for wideband short-range wireless communication using a directional antenna in a millimeter wave band, and the method for wideband short-range wireless communication according to an embodiment may determine a first time interval and a second time interval for a cooperated data frame transfer based on a packet transmission time at each transmission from a source node to a destination node, transmit a frame to a relay node through an antenna pattern directed towards the relay node at a start point of the first time interval, and transmit the frame to the destination node through an antenna pattern directed towards the destination node after a predetermined period of time from a start point of the second time interval.

公开(公告)号：EP2122864A4

公开(公告)日：2010-08-04

申请号：EP08778751

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

CPC classification number: H04W56/00 ,  H04J11/0069 ,  H04J11/0076 ,  H04L25/03866 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662

公开(公告)号：EP2137872A4

公开(公告)日：2010-03-03

申请号：EP08778879

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.

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。