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：EP2011254A4

公开(公告)日：2012-11-14

申请号：EP07746159

申请日：2007-04-24

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM JAE-HEUNG ,  KIM JUNG-IM ,  LEE KYOUNG-SEOK ,  JUNG SOO-JUNG ,  RYU BYUNG-HAN ,  BANG SEUNG-CHAN

IPC: H04B7/26 ,  H04W68/02

CPC classification number: H04W68/025 ,  H04L5/0053 ,  H04W68/02 ,  H04W72/042

公开(公告)号：EP2160858A4

公开(公告)日：2012-06-27

申请号：EP08766532

申请日：2008-06-23

Applicant: KOREA ELECTRONICS TELECOMM ,  KT CORP

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

IPC: H04L1/00 ,  H04J13/18 ,  H04L5/00 ,  H04L23/02

CPC classification number: H04W72/0406 ,  H04J13/0048 ,  H04J13/0062 ,  H04J13/18 ,  H04L1/0026 ,  H04L1/003 ,  H04L1/0031 ,  H04L1/1607 ,  H04L1/1692 ,  H04L1/1861 ,  H04L5/0017 ,  H04L23/02 ,  H04W72/0466

Abstract: When a plurality of terminals share the same resources in a wireless communication system, and when control information such as acknowledgement/negative acknowledgement (ACK/NAK) information or scheduling information is transmitted, a method of efficiently performing code division multiplexing (CDM) is required to distinguish the plurality of terminals. In particular, it is necessary to develop a method by which a code sequence of CDM can be selected and used according to each cell condition. Provided is a method of forming a signal in a wireless communication system in which a plurality of terminals commonly share frequency and time resources. The method includes the operations of receiving condition information in a cell; selecting one of a plurality of time domain orthogonal sequences having different lengths, according to the condition information; and allocating the selected time domain orthogonal sequence to a control signal symbol block.

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：EP2057774A4

公开(公告)日：2010-04-21

申请号：EP07793645

申请日：2007-08-23

Applicant: KOREA ELECTRONICS TELECOMM

Inventor： KIM JUNG-IM ,  KO YOUNG-JO ,  KIM JAE-HEUNG ,  LEE KYOUNG-SEOK ,  RYU BYUNG-HAN ,  BANG SEUNG-CHAN

IPC: H04L1/18

CPC classification number: H04L1/1816 ,  H04L1/0025 ,  H04L1/1887 ,  H04L2001/0093