公开(公告)号：EP2097994B1

公开(公告)日：2013-03-27

申请号：EP07746762.9

申请日：2007-05-30

申请人： Electronics and Telecommunications Research Institute ,  SK Telecom. Co., Ltd. ,  KT Corporation

发明人： CHANG, Kap-Seok ,  KIM, Il-Gyu ,  KIM, Nam-Il ,  PARK, Hyeong-Geun ,  KIM, Young-Hoon ,  BANG, Seung-Chan

IPC分类号： H04B7/26 ,  H04J11/00 ,  H04L27/26

CPC分类号： H04J11/0079 ,  H04L27/261 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2685

公开(公告)号：EP2097994A1

公开(公告)日：2009-09-09

申请号：EP07746762.9

申请日：2007-05-30

申请人： Electronics and Telecommunications Research Institute ,  SK Telecom. Co., Ltd. ,  KT Corporation

发明人： CHANG, Kap-Seok ,  KIM, Il-Gyu ,  KIM, Nam-Il ,  PARK, Hyeong-Geun ,  KIM, Young-Hoon ,  BANG, Seung-Chan

IPC分类号： H04B7/26

CPC分类号： H04J11/0079 ,  H04L27/261 ,  H04L27/2613 ,  H04L27/2656 ,  H04L27/2685

摘要： An apparatus for generating a downlink signal and a cell search apparatus are disclosed. An apparatus for generating a downlink signal generates a downlink signal by one unique cell identification code group and a plurality of frame synchronization identification sequences, generates a downlink signal by a plurality of unique cell identification code groups and a plurality of frame synchronization identification sequences, or generates a downlink signal by a plurality of unique cell identification code groups and one frame synchronization identification sequence. A cell search apparatus obtains frame synchronization and identifies cells through a frame synchronization identification sequence and a unique cell identification code group.

公开(公告)号：EP1949634B1

公开(公告)日：2016-04-27

申请号：EP06823636.3

申请日：2006-11-17

申请人： Electronics and Telecommunications Research Institute ,  SK Telecom Co., Ltd. ,  KTFreetel Co., Ltd.

发明人： 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分类号： H04L27/26 ,  H04B7/06

CPC分类号： H04B7/0608 ,  H04B7/0602 ,  H04L27/2626

公开(公告)号：EP2057811A1

公开(公告)日：2009-05-13

申请号：EP07746704.1

申请日：2007-05-25

申请人： Electronics and Telecommunications Research Institute ,  SK Telecom. Co., Ltd. ,  KTFreetel Co., Ltd.

发明人： CHANG, Kap-Seok ,  KIM, Il-Gyu ,  KIM, Nam-Il ,  KIM, Young-Hoon ,  BANG, Seung-Chan

IPC分类号： H04L27/26

CPC分类号： H04L27/2656 ,  H04J11/0079 ,  H04L27/2613 ,  H04L27/2675

摘要： The invention provides a method of generating a downlink signal and searching a cell on the basis of the downlink signal in an OFDM-based cellular system. The downlink signal includes a plurality of synchronization blocks each having a plurality of sub-frames, and a synchronization pattern composed of a combination of a cell group identification code for identifying a cell group and a frame synchronization identification code for indicating a frame start point is generated in each of the synchronization blocks. Different frame synchronization identification codes are allocated to the synchronization blocks.

公开(公告)号：EP2160858A1

公开(公告)日：2010-03-10

申请号：EP08766532.9

申请日：2008-06-23

申请人： Electronics and Telecommunications Research Institute ,  KT Corporation

发明人： KO, Young-Jo ,  PARK, Hyeong-Geun ,  KIM, Il-Gyu ,  CHANG, Kapseok ,  YI, Hyoseok ,  KIM, Young-Hoon ,  BANG, Seung-Chan

IPC分类号： H04L1/12

CPC分类号： 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

摘要： 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.

摘要翻译： 当多个终端在无线通信系统中共享相同的资源时，并且当发送诸如确认/否定确认（ACK / NAK）信息或调度信息等控制信息时，需要有效执行码分复用（CDM）的方法 以区分多个终端。 特别地，有必要开发一种可以根据每个单元条件选择和使用CDM的代码序列的方法。 提供了一种在无线通信系统中形成信号的方法，其中多个终端共享频率和时间资源。 该方法包括在小区中接收条件信息的操作; 根据条件信息选择具有不同长度的多个时域正交序列中的一个; 以及将所选择的时域正交序列分配给控制信号符号块。

公开(公告)号：EP1946461B1

公开(公告)日：2019-01-09

申请号：EP06812526.9

申请日：2006-11-10

申请人： Electronics and Telecommunications Research Institute

发明人： KIM, Il-Gyu ,  PARK, Hyeong-Geun ,  KIM, Nam-Il ,  CHANG, Kap-Seok ,  KIM, Young-Hoon ,  BANG, Seung-Chan

IPC分类号： H04J11/00 ,  H04J13/00

公开(公告)号：EP2044720B1

公开(公告)日：2015-10-21

申请号：EP07793239.0

申请日：2007-07-25

申请人： Electronics and Telecommunications Research Institute

发明人： KIM, Il-Gyu ,  PARK, Hyeong-Geun ,  KO, Young-Jo ,  CHANG, Kapseok ,  YI, Hyoseok ,  KIM, Young-Hoon ,  BANG, Seung-Chan

IPC分类号： H04L7/10

CPC分类号： H04W56/001 ,  H04J11/0069 ,  H04J11/0093 ,  H04L5/0037 ,  H04L5/005 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2675 ,  H04W36/0061 ,  H04W36/08 ,  H04W56/00

摘要： In a cellular system in which OFDM is used, a forward link synchronization channel, a common pilot channel structure, an initial cell searching method of a mobile station, and an adjacent cell searching method for handover are required. A method of transmitting a forward synchronization signal in a wireless communication system according to the present invention includes generating a frame comprised of a plurality of sync blocks; and transmitting the frame through a forward link, wherein the frame comprises primary synchronization channel sequences which provide timing information of the sync blocks and a plurality of secondary synchronization channel sequences which provide timing information of the frame, wherein a cell identifier is specified by a combination of the primary synchronization channel sequence and a hopping code word specified by the plurality of the secondary synchronization channel sequences Therefore, the cell searching time can be efficiently reduced in an OFDM system.

公开(公告)号：EP4250623A3

公开(公告)日：2023-12-27

申请号：EP23186435.6

申请日：2009-05-08

申请人： Electronics and Telecommunications Research Institute

发明人： CHANG, Kapseok ,  KIM, Young-Hoon ,  KIM, Seong Rag ,  WON, Seuck Ho ,  KIM, Keun Young

IPC分类号： H04L27/26 ,  H04L5/00

摘要： Disclosed is a symbol synchronization obtaining apparatus robust to a frequency offset in a cell search of a wireless communication system. The symbol synchronization obtaining apparatus robust to a frequency offset in a cell search of a wireless communication system may include a sequence generator to generate a base sequence for obtaining the symbol synchronization, a synchronization pattern generator to generate a modified sequence based on the base sequence, and to generate a synchronization pattern by combining the modified sequence and the base sequence, a frequency mapping unit to perform mapping of transmission information to a time area and a frequency area, based on the synchronization pattern, for generating a transmission frame, and a transmitting unit to transmit the transmission frame.

公开(公告)号：EP2062408B1

公开(公告)日：2015-04-29

申请号：EP07808017.3

申请日：2007-08-31

申请人： Electronics and Telecommunications Research Institute

发明人： PARK, Hyeong-Geun ,  KIM, Il-Gyu ,  KO, Young-Jo ,  CHANG, Kap-Seok ,  YI, Hyo-Seok ,  KIM, Young-Hoon ,  BANG, Seung-Chan

IPC分类号： H04L27/26 ,  H04L5/00 ,  H04L25/03

CPC分类号： 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：EP2179556A2

公开(公告)日：2010-04-28

申请号：EP08766564.2

申请日：2008-06-24

申请人： Electronics and Telecommunications Research Institute ,  Samsung Electronics Co., Ltd.

发明人： 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分类号： H04L29/02

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

摘要： 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.