公开(公告)号：WO2007114638A2

公开(公告)日：2007-10-11

申请号：PCT/KR2007001627

申请日：2007-04-03

Applicant: KOREA ELECTRONICS TELECOMM ,  KIM IL-GYU ,  PARK HYEONG-GEUN ,  CHANG KAP-SEOK ,  KO YOUNG-JO ,  YI HYO-SEOK ,  KIM YOUNG-HOON ,  BANG SEUNG-CHAN ,  HWANG SEUNG-KU

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

CPC classification number: H04L5/0053 ,  H04J11/0069 ,  H04L5/0016 ,  H04L27/2647 ,  H04W8/005 ,  H04W48/08 ,  H04W48/16 ,  H04W84/042 ,  H04W88/08

Abstract: A cell searching method in a time-division multiplexing (TDM)-based Orthogonal Frequency-Division Multiplexing (OFDM) cellular system having a primary synchronization channel and secondary synchronization channel, and a frame transmission method and system thereof are provided. In the cell searching method in an OFDM cellular system including a plurality of cells allocated with scrambling codes unique to the cells, wherein each base station transmits a frame of each cell and a terminal searches for a target cell by using the frame received from the base station, the cell searching method includes: acquiring Sync-block synchronization corresponding to a period of a primary synchronization channel symbol included in the frame received by the terminal and a primary synchronization channel sequence number by using the primary synchronization channel symbol; and acquiring a frame boundary of the frame and the target cell of the terminal based on the Sync-block synchronization and the primary synchronization channel sequence number by using a secondary synchronization channel symbol included in the frame received by the terminal. Accordingly, the synchronization can be acquired with low complexity.

Abstract translation: 提供了具有主同步信道和辅同步信道的基于时分复用（TDM）的正交频分复用（OFDM）蜂窝系统中的小区搜索方法及其帧传输方法和系统。 在包括分配有该小区唯一的扰码的多个小区的OFDM蜂窝系统的小区搜索方法中，每个基站发送每个小区的帧，终端通过使用从基站接收到的帧来搜索目标小区 小区搜索方法包括：通过使用主同步信道符号获取与由终端接收的帧中包括的主同步信道符号的周期相对应的同步块同步和主同步信道序列号; 以及通过使用由所述终端接收到的帧中包括的辅同步信道符号，基于所述同步块同步和所述主同步信道序列号，获取所述帧和所述终端的目标小区的帧边界。 因此，可以以低复杂度获取同步。

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：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：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