公开(公告)号：US20110044256A1

公开(公告)日：2011-02-24

申请号：US12160719

申请日：2007-05-30

申请人： Kap-Seok Chang ,  Il-Gyu Kim ,  Nam-Il Kim ,  Hyeong-Geun Park ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Kap-Seok Chang ,  Il-Gyu Kim ,  Nam-Il Kim ,  Hyeong-Geun Park ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04W72/04

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.

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。

公开(公告)号：US20090219882A1

公开(公告)日：2009-09-03

申请号：US12093284

申请日：2006-11-10

申请人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04W72/04 ,  H04J11/00 ,  H04K1/00

CPC分类号： H04L25/03866 ,  H04J11/0069 ,  H04L27/2656 ,  H04L27/2657

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。

公开(公告)号：US20090080385A1

公开(公告)日：2009-03-26

申请号：US12093415

申请日：2006-11-10

申请人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04J3/06 ,  H04W56/00

CPC分类号： H04L27/2656 ,  H04J11/0069 ,  H04L5/0016 ,  H04L5/005 ,  H04L27/2613 ,  H04L27/2675

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： 提供了正交频分复用蜂窝系统中的小区搜索方法，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，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。

公开(公告)号：US08630279B2

公开(公告)日：2014-01-14

申请号：US12160719

申请日：2007-05-30

申请人： Kap-Seok Chang ,  Il-Gyu Kim ,  Nam-Il Kim ,  Hyeong-Geun Park ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Kap-Seok Chang ,  Il-Gyu Kim ,  Nam-Il Kim ,  Hyeong-Geun Park ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04B7/216 ,  H04B1/00

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.

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。

公开(公告)号：US20090252109A1

公开(公告)日：2009-10-08

申请号：US12158868

申请日：2006-12-22

申请人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Moon-Sik Lee ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Moon-Sik Lee ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04W72/04 ,  H04J11/00

CPC分类号： H04B7/0689 ,  H04B7/0408 ,  H04B7/0604 ,  H04B7/068 ,  H04B7/0695 ,  H04L1/0625 ,  H04L25/022 ,  H04L25/0228 ,  H04L27/2647 ,  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。

公开(公告)号：US08542571B2

公开(公告)日：2013-09-24

申请号：US12093284

申请日：2006-11-10

申请人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04L27/30

CPC分类号： H04L25/03866 ,  H04J11/0069 ,  H04L27/2656 ,  H04L27/2657

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。

公开(公告)号：US08248911B2

公开(公告)日：2012-08-21

申请号：US12093415

申请日：2006-11-10

申请人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Il-Gyu Kim ,  Hyeong-Geun Park ,  Nam-Il Kim ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04J11/00

CPC分类号： H04L27/2656 ,  H04J11/0069 ,  H04L5/0016 ,  H04L5/005 ,  H04L27/2613 ,  H04L27/2675

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： 提供了正交频分复用蜂窝系统中的小区搜索方法，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，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。

公开(公告)号：US08411552B2

公开(公告)日：2013-04-02

申请号：US12093428

申请日：2006-11-10

申请人： Il-Gyu Kim ,  Nam-Il Kim ,  Hyeong-Geun Park ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Il-Gyu Kim ,  Nam-Il Kim ,  Hyeong-Geun Park ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04J11/00

CPC分类号： H04B1/7083 ,  H04J11/0073 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2684

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。 终端使用的小区搜索方法，在使用从多个基站接收的接收信号来搜索目标小区，每个基站在正交频分复用（OFDM）蜂窝系统中的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 根据小区的跳频模式跳码的符号，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。

公开(公告)号：US20090067370A1

公开(公告)日：2009-03-12

申请号：US12093428

申请日：2006-11-10

申请人： Il-Gyu Kim ,  Nam-Il Kim ,  Hyeong-Geun Park ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Il-Gyu Kim ,  Nam-Il Kim ,  Hyeong-Geun Park ,  Kap-Seok Chang ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04W36/00 ,  H04B1/713

CPC分类号： H04B1/7083 ,  H04J11/0073 ,  H04L27/2613 ,  H04L27/2655 ,  H04L27/2656 ,  H04L27/2657 ,  H04L27/2662 ,  H04L27/2675 ,  H04L27/2684

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。 终端使用的小区搜索方法，在使用从多个基站接收的接收信号来搜索目标小区，每个基站在正交频分复用（OFDM）蜂窝系统中的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 根据小区的跳频模式跳码的符号，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。

公开(公告)号：US08340219B2

公开(公告)日：2012-12-25

申请号：US12445234

申请日：2007-10-10

申请人： Moon-Sik Lee ,  Nam-Il Kim ,  Hyeong-Geun Park ,  Il-Gyu Kim ,  Young-Hoon Kim ,  Seung-Chan Bang

发明人： Moon-Sik Lee ,  Nam-Il Kim ,  Hyeong-Geun Park ,  Il-Gyu Kim ,  Young-Hoon Kim ,  Seung-Chan Bang

IPC分类号： H04L27/00

CPC分类号： H04W72/0406 ,  H04B1/30 ,  H04B1/406

摘要： Provided are a receiver and a receiving method for a scalable bandwidth in a mobile station of an Orthogonal Frequency Division Multiplexing (OFDM) system. The receiving method includes the steps of: (a) filtering a received RF signal; (b) oscillating a frequency according to a center frequency control signal to output a local oscillation frequency; (c) down-converting the filtered RF signal by using the local oscillation frequency; (d) scalable-filtering the down-converted signal while adjusting a bandwidth according to a bandwidth control signal; (e) controlling gain of the scalable-filtered signal; (f) converting the gain-controlled analog signal into a digital signal by using a sampling frequency matching with a corresponding bandwidth according to an ADC control signal; and (g) demodulating the converted digital signal, outputting the center frequency control signal, the bandwidth control signal, and the ADC control signal according to control information received from an upper layer.

摘要翻译： 提供了一种用于正交频分复用（OFDM）系统的移动台中的可扩展带宽的接收机和接收方法。 接收方法包括以下步骤：（a）对接收到的RF信号进行滤波; （b）根据中心频率控制信号振荡频率以输出本地振荡频率; （c）使用本地振荡频率对滤波的RF信号进行下变频; （d）在根据带宽控制信号调整带宽的同时可缩放滤波下变频信号; （e）控制所述可缩放滤波信号的增益; （f）通过使用根据ADC控制信号的与相应带宽匹配的采样频率将增益控制模拟信号转换成数字信号; 和（g）根据从上层接收到的控制信息解调转换的数字信号，输出中心频率控制信号，带宽控制信号和ADC控制信号。