公开(公告)号：EP2062408A1

公开(公告)日：2009-05-27

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

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

摘要： When a terminal generates an uplink signal in a communication system, the terminal hops a sequence for differentiating itself from another terminal with time. The terminal generates the uplink signal by multiplying a transmission symbol by a sequence of a transmission time corresponding to the transmission symbol.

公开(公告)号：EP2044720A1

公开(公告)日：2009-04-08

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.

摘要翻译： 在其中OFDM的蜂窝系统时，前向链路同步信道，公共导频信道结构，初始小区搜索的移动台的方法，并且在相邻小区搜索所需要的越区切换方法。 在无线通信系统gemäß到本发明的用于传送前向同步信号的方法，包括：产生包括同步块中的多个帧; 并发射通过正向链路帧，worin该帧包括提供同步块的信息和提供该帧的定时信息的辅同步信道序列的复数，worin小区标识符是通过组合指定的主同步信道序列 主同步信道序列和由THEREFORE辅同步信道序列的多元性指定的跳频码字的，小区搜索时间可以有效地在OFDM系统中降低。

公开(公告)号：EP2008419A1

公开(公告)日：2008-12-31

申请号：EP07746073.1

申请日：2007-04-19

申请人： Electronics and Telecommunications Research Institute

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

IPC分类号： H04L27/26

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

摘要： 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：EP1946461A1

公开(公告)日：2008-07-23

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： H04B7/26

CPC分类号： H04J11/0069 ,  H04J13/0066 ,  H04J13/0074 ,  H04L5/0016 ,  H04L5/0048 ,  H04L25/0226 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662

摘要： Provided are a cell search method, a forward link frame transmission method, an apparatus using the methods, and a forward link frame structure. The cell search apparatus includes a sync acquirer acquiring synchronization of sync channel symbols using a sync channel of a forward link, and a group detector detecting at least one hopping codeword element belonging to a hopping codeword of a target cell from a forward link signal containing sync channel symbols sequence-hopped using a hopping codeword corresponding to a code group to which a scrambling code of each cell belongs based on the acquired synchronization, and detecting a code group of the target cell based on the detected hopping codeword element, wherein the hopping codewords are orthogonal to a cyclic shift operation. Accordingly, a cell search time and the complexity of the cell search can be reduced.