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1. 发明申请

WO2007073116A1 METHOD FOR DEMODULATING BROADCAST CHANNEL BY USING SYNCHRONIZATION CHANNEL AT OFDM SYSTEM WITH TRANSMIT DIVERSITY AND TRANSMITTING/RECEIVING DEVICE THEREFOR 审中-公开
标题翻译：通过在OFDM系统中使用同步信道和发射/接收设备来解调广播信道的方法
公开(公告)号：WO2007073116A1
公开(公告)日：2007-06-28
申请号：PCT/KR2006/005657
申请日：2006-12-22
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KIM, Il-Gyu , PARK, Hyeong-Geun , KIM, Nam-Il , CHANG, Kap-Seok , LEE, Moon-Sik , KIM, Young-Hoon , BANG, Seung-Chan
发明人： KIM, Il-Gyu , PARK, Hyeong-Geun , KIM, Nam-Il , CHANG, Kap-Seok , LEE, Moon-Sik , KIM, Young-Hoon , BANG, Seung-Chan
IPC分类号： H04L27/26
CPC分类号： H04L27/2608 , H04B7/0606 , Y02D70/142 , Y02D70/444
摘要： The present invention relates to a method for demodulating a BCH by using an SCH in an OFDM system with transmit diversity, and a transmitting apparatus and a receiving apparatus using the same. For this purpose, the present invention provides a transmit diversity transmission method for a transmitting apparatus of a base station that generates an SCH symbol and a BCH symbol, maps the SCH symbol and the BCH symbol to an OFDM signal, converts the OFDM signal into a time domain signal, and transmits the OFDM signal trough a selected antenna among a plurality of antennas. In addition, the present invention provides a method for demodulating a BCH by using an SCH to a mobile station that receives an OFDM signal from the base station, filters an SCH and a BCH from the OFDM signal, converts the OFDM signal to a frequency domain signal, calculates a channel estimation value by using the SCH and the BCH, and coherently demodulates the BCH. According to the present invention, coherent demodulation of a BCH can reduce a frame error generation probability, minimize a channel estimation error due to fading, reduce time for checking the number of antennas of the base station and time for demodulating the BCH, and reduce power consumption.
摘要翻译：本发明涉及一种使用具有发射分集的OFDM系统中的SCH解调BCH的方法，以及使用该方法的发送装置和接收装置。为此，本发明提供一种用于生成SCH符号和BCH符号的基站的发送装置的发送分集发送方法，将SCH符号和BCH符号映射到OFDM信号，将OFDM信号变换为时域信号，并且通过多个天线中的所选天线发送OFDM信号。此外，本发明提供了一种通过使用SCH对从基站接收OFDM信号的SCH进行解调的BCH的方法，从OFDM信号对SCH和BCH进行滤波，将OFDM信号转换为频域信号，通过使用SCH和BCH来计算信道估计值，并相干地解调BCH。根据本发明，BCH的相干解调可以降低帧错误生成概率，使由于衰落引起的信道估计误差最小化，减少用于检查基站天线数量的时间和用于解调BCH的时间，并且降低功率消费。

2. 发明申请

WO2007055527A1 CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF, AND FORWARD LINK FRAME STRUCTURE THEREOF 审中-公开
标题翻译： OFDM细胞系统中的细胞搜索方法，其框架传输方法及其链接框架结构
公开(公告)号：WO2007055527A1
公开(公告)日：2007-05-18
申请号：PCT/KR2006/004694
申请日：2006-11-10
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KIM, Il-Gyu , KIM, Nam-Il , PARK, Hyeong-Geun , CHANG, Kap-Seok , KIM, Young-Hoon , BANG, Seung-Chan
发明人： KIM, Il-Gyu , KIM, Nam-Il , PARK, Hyeong-Geun , CHANG, Kap-Seok , KIM, Young-Hoon , BANG, Seung-Chan
IPC分类号： H04L27/26
CPC分类号： H04L27/2655 , H04J11/0069 , H04L5/023 , H04L25/03866 , H04L27/2613 , H04L27/2656 , H04L27/2657 , H04L27/2662 , H04L27/2675
摘要： Provided are a cell search method, a frame transmission method thereof, and a forward link frame structure thereof. The cell search method used by a terminal to search a target cell using reception signals received from a plurality of base stations, each base station transmitting a frame of its cell, in an Orthogonal Frequency-Division Multiplexing (OFDM) cellular system comprising a plurality cells to which a cell-specific scrambling code is assigned includes: detecting a hopping pattern of the target cell using reception sync channel symbols, which are signals corresponding to sync channel symbol positions of the reception signals, wherein the frame of each cell comprises M sync channel symbols code-hopped according to a hopping pattern of the cell, where M is a natural number equal to or greater than 2, each hopping pattern containing M sync channel code sequences and respectively corresponding to each code group to which a scrambling code of each cell belongs, and an arbitrary hopping pattern used in the OFDM cellular system differs from a cyclically shifted result of the hopping pattern, other hopping patterns, or cyclically shifted results of the other hopping patterns; and detecting a code group of the target cell based on the detected hopping pattern. Accordingly, a cell search time and the complexity of the cell search can be reduced.
摘要翻译：提供了一种小区搜索方法，其帧发送方法及其前向链路帧结构。一种终端使用的小区搜索方法，所述小区搜索方法是使用从多个基站接收的接收信号来搜索目标小区，所述接收信号在每个基站发送其小区的帧，所述正交频分复用（OFDM）蜂窝系统包括多个小区分配小区特定扰码的步骤包括：使用接收同步信道符号来检测目标小区的跳频模式，所述接收同步信道符号是对应于接收信号的同步信道符号位置的信号，其中每个小区的帧包括M个同步信道根据小区的跳频图案跳频的符号，其中M是等于或大于2的自然数，每个跳频模式包含M个同步信道码序列，并且分别对应于每个小区的扰码的每个码组属于，并且在OFDM蜂窝系统中使用的任意跳频模式与跳频模式的循环移位结果不同跳频图案或其他跳频图案的循环移位结果; 以及基于检测到的跳频图案来检测目标小区的代码组。因此，可以减少小区搜索时间和小区搜索的复杂度。

3. 发明申请

WO2008082038A1 METHOD FOR GENERATING DOWNLINK SIGNAL, AND METHOD FOR SEARCHING CELL 审中-公开
标题翻译：用于生成下行链路信号的方法，以及用于搜索小区的方法
公开(公告)号：WO2008082038A1
公开(公告)日：2008-07-10
申请号：PCT/KR2007/002615
申请日：2007-05-30
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , CHANG, Kap-Seok , KIM, Il-Gyu , KIM, Nam-Il , PARK, Hyeong-Geun , KIM, Young-Hoon , BANG, Seung-Chan
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： H04L27/2656 , H04J11/0069 , H04L27/2613 , H04L27/2657 , H04L27/2662
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.
摘要翻译：公开了一种用于生成下行链路信号的装置和小区搜索装置。用于产生下行链路信号的装置通过一个唯一小区识别码组和多个帧同步识别序列产生下行链路信号，通过多个唯一小区识别码组和多个帧同步识别序列产生下行链路信号，或通过多个唯一小区识别码组和一个帧同步识别序列生成下行链路信号。小区搜索装置通过帧同步识别序列和唯一小区识别码组获得帧同步并识别小区。

4. 发明申请

WO2007055526A1 CELL SEARCH METHOD, FORWARD LINK FRAME TRANSMISSION METHOD, APPARATUS USING THE SAME AND FORWARD LINK FRAME STRUCTURE 审中-公开
标题翻译：小区搜索方法，前向链路帧传输方法，使用它们的装置和前向链路帧结构
公开(公告)号：WO2007055526A1
公开(公告)日：2007-05-18
申请号：PCT/KR2006/004692
申请日：2006-11-10
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KIM, Il-Gyu , PARK, Hyeong-Geun , KIM, Nam-Il , CHANG, Kap-Seok , KIM, Young-Hoon , BANG, Seung-Chan
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.
摘要翻译：提供了小区搜索方法，前向链路帧发送方法，使用该方法的装置和前向链路帧结构。小区搜索装置包括使用前向链路的同步信道获取同步信道符号的同步的同步获取器，以及从包含同步的前向链路信号检测属于目标小区的跳频码字的至少一个跳频码字元素的组检测器基于所获取的同步，使用与每个小区的扰码对应的码组对应的跳频码字进行序列跳频，基于检测到的跳频码字元素检测目标小区的码组，其中跳频码字与循环移位操作正交。因此，可以减少小区搜索时间和小区搜索的复杂度。

5. 发明申请

WO2007055537A1 CELL SEARCH METHOD, FORWARD LINK FRAME TRANSMISSION METHOD, APPARATUS USING THE SAME AND FORWARD LINK FRAME STRUCTURE 审中-公开
标题翻译：细胞搜索方法，前向链路帧传输方法，使用它们的装置和前向链路帧结构
公开(公告)号：WO2007055537A1
公开(公告)日：2007-05-18
申请号：PCT/KR2006/004712
申请日：2006-11-10
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KIM, Il-Gyu , PARK, Hyeong-Geun , KIM, Nam-Il , CHANG, Kap-Seok , KIM, Young-Hoon , BANG, Seung-Chan
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： H04L27/2601 , H04J11/0069 , H04W48/16
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 in an Orthogonal Frequency Division Multiplexing cellular system, wherein the time it takes to perform a cell search and the complexity of the cell search can be reduced. The cell search apparatus includes a sync acquirer which receives a signal according to a forward link frame comprising a plurality of sync channel symbols each having different intervals between the adjacent sync channel symbols and achieves synchronization of the sync channel symbols using a sync channel of the received signal, and a boundary detector which detects a frame boundary using an interval pattern between the sync channel symbols, based on the achieved synchronization.
摘要翻译：提供了一种在正交频分复用蜂窝系统中的小区搜索方法，前向链路帧传输方法，使用该方法的装置和前向链路帧结构，其中执行小区搜索所需的时间和可以减少小区搜索。小区搜索装置包括：同步获取器，其根据包括多个同步信道符号的前向链路帧接收信号，每个同步信道符号在相邻同步信道符号之间具有不同的间隔，并且使用所接收的同步信道符号的同步信道来实现同步信道符号的同步信号，以及边界检测器，其基于所实现的同步，使用同步信道符号之间的间隔模式来检测帧边界。

6. 发明申请

WO2007058494A1 METHOD AND APPARATUS FOR TRANSMITTING BY USING TRANSMIT DIVERSITY AT DFT SPREAD OFDMA 审中-公开
标题翻译：通过在DFT SPREAD OFDMA上使用发送多样性来发送的方法和装置
公开(公告)号：WO2007058494A1
公开(公告)日：2007-05-24
申请号：PCT/KR2006/004844
申请日：2006-11-17
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KIM, Il-Gyu , PARK, Hyeong-Geun , CHANG, Kap-Seok , KIM, Young-Hoon , BANG, Seung-Chan , SHIN, Eun-Jeong , JWA, Hye-Kyung , LEE, Moon-Sik
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
CPC分类号： H04B7/0608 , H04B7/0602 , H04L27/2626
摘要： The present invention relates to a packet data transmission method in an OFDMA system and an apparatus thereof. The present invention provides a user packet data transmission method including generating a RACH burst for channel information estimation, selecting a first antenna among a plurality of antennas, transmitting the RACH burst through the first antenna to a base station, receiving a data transmission acceptance signal from the base station, in response to the RACH burst, transmitting user packet data through the first antenna when receiving a signal indicating that the data transmission is allowed, and selecting a second antenna that is difference from the first antenna and transmitting a RACH burst through the second antenna when receiving a signal indicating that the data transmission is not allowed, and a transmitting apparatus of a mobile station having the plurality of antennas. According to the present invention, the RACH burst and user packet data are transmitted by using a mobile station having a plurality of antennas in an LTE-applied OFDMA system, and therefore data transmission can be performed with a wide bandwidth and high data rate and a deep fading period that may occur during the data transmission can be reduced, thereby preventing call dropping and improving data transmission performance.
摘要翻译：本发明涉及OFDMA系统中的分组数据传输方法及其装置。本发明提供了一种用户分组数据传输方法，包括：生成用于信道信息估计的RACH脉冲串，选择多个天线中的第一天线，通过第一天线发送RACH脉冲串到基站;从基站接收数据传输接收信号; 所述基站响应于所述RACH突发，当接收到指示允许所述数据传输的信号时，通过所述第一天线发送用户分组数据，并且选择与所述第一天线不同并且通过所述第一天线发送RACH突发的第二天线在接收到指示不允许数据传输的信号的第二天线以及具有多个天线的移动台的发送装置。根据本发明，通过在LTE应用的OFDMA系统中使用具有多个天线的移动台来发送RACH突发和用户分组数据，因此可以以宽带宽和高数据速率进行数据传输，并且可以减少在数据传输期间可能发生的深度衰落周期，从而防止呼叫丢弃并提高数据传输性能。

7. 发明申请

WO2008060123A1 METHOD FOR GENERATING AND TRANSMITTING DOWNLINK FRAME 审中-公开
标题翻译：用于生成和发送下行链路帧的方法
公开(公告)号：WO2008060123A1
公开(公告)日：2008-05-22
申请号：PCT/KR2007/005793
申请日：2007-11-16
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , CHANG, Kap-Seok , KIM, Il-Gyu , PARK, Hyeong-Geun , KO, Young-Jo , YI, Hyo-Seok , KIM, Young-Hoon , BANG, Seung-Chan
发明人： CHANG, Kap-Seok , KIM, Il-Gyu , PARK, Hyeong-Geun , KO, Young-Jo , YI, Hyo-Seok , KIM, Young-Hoon , BANG, Seung-Chan
IPC分类号： H04L7/033
CPC分类号： H04L5/0053 , H04L5/0007 , H04L25/0202
摘要： A downlink frame generation device arrange a plurality of synchronization channel symbols and a plurality of broadcasting channel symbols in a common bandwidth of a system so that the symbols may neighbor each other on the time axis. The downlink frame generation device applies a precoding vector to the synchronization channel symbols and the broadcasting channel symbols to generate a plurality of downlink frames corresponding to a plurality of antennas. The precoding vector is variable by a sector for transmitting a plurality of downlink frames and a subframe in which a plurality of synchronization channel symbols are positioned. The precoding vector is independent of an index of a subcarrier.
摘要翻译：下行链路帧生成装置在系统的公共带宽中配置多个同步信道符号和多个广播信道符号，使得符号可以在时间轴上彼此相邻。下行链路帧生成装置对同步信道符号和广播信道符号应用预编码矢量，生成与多个天线对应的多个下行链路帧。预编码向量由用于发送多个下行链路帧的扇区和多个同步信道符号所在的子帧可变。预编码向量与子载波的索引无关。

8. 发明申请

WO2008026898A1 METHOD AND APPARATUS FOR TRANSMITTING UPLINK SIGNAL, AND METHOD AND APPARATUS FOR GENERATING UPLINK SIGNAL IN COMMUNICATION SYSTEM 审中-公开
标题翻译：用于发送上行链路信号的方法和装置，以及用于在通信系统中生成上行链路信号的方法和装置
公开(公告)号：WO2008026898A1
公开(公告)日：2008-03-06
申请号：PCT/KR2007/004211
申请日：2007-08-31
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , PARK, Hyeong-Geun , KIM, Il-Gyu , KO, Young-Jo , CHANG, Kap-Seok , YI, Hyo-Seok , KIM, Young-Hoon , BANG, Seung-Chan
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.
摘要翻译：当终端在通信系统中产生上行链路信号时，终端跳过用于与其他终端自身区分的序列。终端通过将发送符号乘以与发送符号对应的发送时间的序列来生成上行链路信号。

9. 发明申请

WO2008004823A1 METHOD AND APPARATUS FOR TRANSMITTING SIGNAL IN COMMUNICATION SYSTEM 审中-公开
标题翻译：在通信系统中发送信号的方法和装置
公开(公告)号：WO2008004823A1
公开(公告)日：2008-01-10
申请号：PCT/KR2007/003267
申请日：2007-07-05
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , PARK, Hyeong-Geun , KIM, Il-Gyu , KO, Young-Jo , CHANG, Kap-Seok , YI, Hyo-Seok , KIM, Young-Hoon , BANG, Seung-Chan
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： H04L27/2634 , H04B7/022 , H04L27/2613 , H04L27/2655
摘要： When a plurality of sectors transmit the same signal in a communication system, the same signal is transmitted after a weight is applied to the same signal. At this time, defective reception of the same signal in a terminal may be reduced by setting a weight pattern differently according to a symbol transmission time and a sector number.
摘要翻译：当多个扇区在通信系统中发送相同的信号时，在将权重施加到相同的信号之后发送相同的信号。此时，可以通过根据符号传输时间和扇区号不同地设置加权模式来减少终端中相同信号的接收不良。

10. 发明申请

WO2007114638A3 TDM BASED CELL SEARCH METHOD IN OFDM CELLULAR SYSTEM, FRAME TRANSMISSION METHOD THEREOF AND SYSTEM THEREOF 审中-公开
公开(公告)号：WO2007114638A3
公开(公告)日：2007-10-11
申请号：PCT/KR2007/001627
申请日：2007-04-03
申请人： ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , KIM, Il-Gyu , PARK, Hyeong-Geun , CHANG, Kap-Seok , KO, Young-Jo , YI, Hyo-Seok , KIM, Young-Hoon , BANG, Seung-Chan , HWANG, Seung-Ku
发明人： KIM, Il-Gyu , PARK, Hyeong-Geun , CHANG, Kap-Seok , KO, Young-Jo , YI, Hyo-Seok , KIM, Young-Hoon , BANG, Seung-Chan , HWANG, Seung-Ku
IPC分类号： H04L27/26 , H04B7/26
摘要： 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.

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