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：EP2008419A4

公开(公告)日：2014-06-11

申请号：EP07746073

申请日：2007-04-19

Applicant: KOREA ELECTRONICS TELECOMM ,  SAMSUNG ELECTRONICS CO LTD

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

IPC: H04L27/26 ,  H04L1/18 ,  H04W52/42

CPC classification number: H04B7/0602 ,  H04B7/12 ,  H04L1/0006 ,  H04L1/06 ,  H04L1/1893 ,  H04L5/0053 ,  H04L5/023 ,  H04L27/2626 ,  H04W52/10 ,  H04W52/146 ,  H04W52/286 ,  H04W52/48

Abstract: A transmission method performed by a mobile station for random access channel (RACH) burst transmission diversity gain is provided. According to the method, a variety of combinations of a time switching transmit diversity (TSTD) technique, a frequency hopping technique, and a power ramping technique that are robust against fading channel environments are applied to transmission of an RACH burst, thereby increasing the probability of detecting an RACH signature of a base station. Also, by using the transmission parameters (subband frequencies, transmission antennas, power, etc.) which are used for successful transmission of an RACH burst, for transmission of a successive user packet data, reliable transmission of the successive user packet data can be performed.

公开(公告)号：EP2008418A4

公开(公告)日：2013-09-04

申请号：EP07746067

申请日：2007-04-19

Applicant: KOREA ELECTRONICS TELECOMM

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

IPC: H04B7/06 ,  H04W74/08

CPC classification number: H04W52/42 ,  H04B7/0617 ,  H04B7/0623 ,  H04B7/0689 ,  H04B7/12 ,  H04L1/0001 ,  H04L1/0006 ,  H04L1/06 ,  H04L1/1867 ,  H04L1/188 ,  H04L1/1893 ,  H04L5/0053 ,  H04L5/023 ,  H04L27/2626 ,  H04W52/286 ,  H04W52/48 ,  H04W74/085 ,  H04W74/0866

Abstract: A transmission method performed by a mobile station for random access channel (RACH) burst transmission diversity gain is provided. According to the method, by combining and using switching diversity by beam forming, frequency hopping, and power ramping, the probability that when the speed of a mobile station is low, the mobile station falls into a deep fading environment is lowered, thereby increasing the probability of detecting an RACH signature of the base station. Also, by using the transmission parameters (subbands, precoding matrixes, power, etc.) which are used for successful transmission of an RACH burst, for transmission of a successive user packet data, reliable transmission of the successive user packet data can be performed.

公开(公告)号：EP2156589A4

公开(公告)日：2013-05-22

申请号：EP08766358

申请日：2008-06-16

Applicant: KOREA ELECTRONICS TELECOMM ,  SAMSUNG ELECTRONICS CO LTD

Inventor： KO YOUNG-JO ,  PARK HYEONG-GEUN ,  KIM IL-GYU ,  CHANG KAPSEOK ,  YI HYOSEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN

IPC: H04J11/00 ,  H04B7/26 ,  H04J13/00 ,  H04L5/00

CPC classification number: H04L5/0016 ,  H04J13/0074 ,  H04L5/0017 ,  H04L5/0019 ,  H04L5/0021 ,  H04L5/0037 ,  H04L5/0048 ,  H04L5/0053 ,  H04L5/0055

Abstract: Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly use time and frequency resources for efficient code hopping. The method includes allocating the same frequency-axis sequence and different time-axis sequences to a plurality of terminals by using a resource index according to a first slot in the first slot; and allocating different frequency-axis sequences and different time-axis sequences to the plurality of terminals by using a resource index according to a second slot in the second slot.

Abstract translation: 提供了一种在无线通信系统中形成信号的方法，其中多个终端通常使用用于有效跳码的时间和频率资源。 该方法包括通过使用根据第一时隙中的第一时隙的资源索引向多个终端分配相同的频率轴序列和不同的时间轴序列; 以及通过使用根据所述第二时隙中的第二时隙的资源索引，向所述多个终端分配不同的频率轴序列和不同的时间轴序列。

公开(公告)号：EP2062408A4

公开(公告)日：2011-12-14

申请号：EP07808017

申请日：2007-08-31

Applicant: KOREA ELECTRONICS TELECOMM

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

IPC: H04L27/26 ,  H04B1/69 ,  H04J13/00 ,  H04L5/00 ,  H04L25/03

CPC classification number: H04W72/04 ,  H04J11/00 ,  H04J13/0074 ,  H04L1/1692 ,  H04L1/1861 ,  H04L1/1887 ,  H04L5/0021 ,  H04L5/0048 ,  H04L5/0053 ,  H04L25/03866 ,  H04L27/2602

公开(公告)号：EP2076980A4

公开(公告)日：2012-06-06

申请号：EP07833422

申请日：2007-10-18

Applicant: KOREA ELECTRONICS TELECOMM ,  SAMSUNG ELECTRONICS CO LTD

Inventor： KIM IL-GYU ,  PARK HYEONG-GEUN ,  KO YOUNG-JO ,  CHANG KAPSEOK ,  YI HYOSEOK ,  LEE JUN-HWAN ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN

IPC: H04J11/00

CPC classification number: H04J11/0069 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L25/0204 ,  H04L25/0226 ,  H04L25/0228 ,  H04L25/03866 ,  H04L27/261 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2675 ,  H04W56/0085 ,  Y02D70/1262

Abstract: Provided are a sync channel of a forward link, a common pilot channel structure, and an initial cell search method and an adjacent cell search method for handover in a cellular system using orthogonal frequency division multiplexing (OFDM). A cell search method in an OFDM cellular system in which a primary sync channel and a secondary sync channel are configured based on time division multiplexing (TDM) includes acquiring sync block synchronization and a primary sync channel sequence number using a primary sync channel symbol included in a frame received by a terminal, detecting a boundary of the frame and a scrambling code group using the sync block and a secondary sync channel symbol included in the frame received by the terminal, and acquiring a scrambling code using the primary sync channel sequence number and the scrambling code group, thereby reducing cell search time with low complexity.

公开(公告)号：EP1949634A4

公开(公告)日：2012-01-18

申请号：EP06823636

申请日：2006-11-17

Applicant: KOREA ELECTRONICS TELECOMM ,  SK TELECOM CO LTD ,  KT FREETEL CO LTD

Inventor： KIM IL-GYU ,  PARK HYEONG-GEUN ,  CHANG KAP-SEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN ,  SHIN EUN-JEONG ,  JWA HYE-KYUNG ,  LEE MOON-SIK

IPC: H04L27/26 ,  H04B7/06

CPC classification number: H04B7/0608 ,  H04B7/0602 ,  H04L27/2626

公开(公告)号：EP2153545A4

公开(公告)日：2010-10-27

申请号：EP08723354

申请日：2008-03-07

Applicant: KOREA ELECTRONICS TELECOMM ,  SAMSUNG ELECTRONICS CO LTD

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

IPC: H04L1/00 ,  H04L25/03 ,  H04L25/05

CPC classification number: H04W48/10 ,  H04J13/00 ,  H04L1/0041 ,  H04L1/0046 ,  H04L1/0067 ,  H04L1/0071 ,  H04L1/1845 ,  H04L25/03866 ,  H04L25/05 ,  H04W4/18 ,  H04W48/08 ,  H04W72/0446

Abstract: A signal transmitting method according to an exemplary embodiment of the present invention includes channel-coding broadcasting channel information by using a first scrambling code in a first frame within a broadcasting channel information updating period including a plurality of frames, and channel-coding the broadcasting channel information by using a second scrambling code in a second frame within the broadcasting channel information updating period. The second scrambling code is different from the first scrambling code.

公开(公告)号：WO2005060109A3

公开(公告)日：2006-08-31

申请号：PCT/KR2004002816

申请日：2004-11-03

Applicant: UTE ELECTRONICS & TELECOMMUNICATIONS RES INST ,  SAMSUNG ELECTRONICS CO LTD ,  KT CORP ,  SK TELECOM CO LTD ,  KT FREETEL CO LTD ,  HANARO TELECOM INC ,  KIM JUN-WOO ,  KIM YOUNG-HOON ,  CHAE SU-CHANG ,  PARK YOUN-OK

Inventor： KIM JUN-WOO ,  KIM YOUNG-HOON ,  CHAE SU-CHANG ,  PARK YOUN-OK

IPC: H04J11/00 ,  H04L27/34 ,  H04B20060101

CPC classification number: H04L5/023 ,  H04L1/0003 ,  H04L1/0009 ,  H04L27/2608

Abstract: Disclosed is a demodulation apparatus for receiving signals by an adaptive modulation and coding method, and demodulating the signals, in an OFDMA based packet communication system, comprising: a QAM demapper for performing QAM demapping to the received signals by a modulation method using a maximum modulation ratio, until modulation methods for each of sub-channels are analyzed; a slot buffer for storing the data outputted from the QAM demapper; a channel decoder for decoding the data stored in the slot buffer and analyzing modulation methods for each sub-channels and transferring the analyzed modulation methods to the QAM demapper; and in at the same time, reading valid data from the data stored in the slot buffer, based on the analyzed modulation methods for each sub-channels, and demodulating the valid data.

Abstract translation: 公开了一种用于在基于OFDMA的分组通信系统中通过自适应调制和编码方法接收信号并解调信号的解调装置，包括：QAM解映射器，用于通过使用最大调制的调制方法对所接收的信号进行QAM解映射 比例，直到分析每个子信道的调制方法; 用于存储从QAM解映射器输出的数据的时隙缓冲器; 用于解码存储在时隙缓冲器中的数据并分析每个子信道的调制方法并将分析的调制方法传送到QAM解映射器的信道解码器; 并且同时，基于针对每个子信道的分析的调制方法和解调有效数据，从存储在时隙缓冲器中的数据读取有效数据。