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公开(公告)号：KR1020060050068A
公开(公告)日：2006-05-19
申请号：KR1020050062639
申请日：2005-07-12
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04L27/261 , H04L5/0012 , H04L27/2607 , H04L27/2628 , H04L27/2646
Abstract: 본 발명에 따른 OFDMA(Orthogonal Frequency Division Multiple Access) 시스템에서의 송신 장치는 각 채널별 송신 데이터를 인코딩하고 변조한 다음, 주파수 호핑 코드를 사용하는 각 채널이 점유하는 하나 이상의 부반송파와 하나 이상의 OFDM(Orthogonal Frequency Division Multiple) 심볼 구간으로 이루어진 호핑 블록에 변조된 데이터 심볼과 파일롯 심볼을 삽입한다. 그리고 확산인자가 상기 호핑 블록 크기와 동일한 서로 다른 2진 직교 코드를 이용하여 각 채널별 상기 호핑 블록을 시간 및 주파수 영역에서 2차원 확산시킨 후, 부반송파 및 OFDM 심볼 구간별로 더한 후, 셀 고유의 2진 확산 코드를 이용하여 스크램블링한다. 그리고 역 고속 푸리에 변환하고 CP(Cyclic Prefix)를 삽입하여 전송한다. 이렇게 하면, OFDMA 방식과 MC-CDMA(multicarrier-code division multiple access) 방식의 단점을 모두 극복할 수 있다.
OFDM, 코드 다중화, 주파수 호핑, 푸리에 변환, 다중접속, MIMO-
公开(公告)号：KR101307070B1
公开(公告)日：2013-09-26
申请号：KR1020090124348
申请日：2009-12-15
Applicant: 한국전자통신연구원
IPC: H04B1/40
CPC classification number: H04L9/0662 , H04L2209/80
Abstract: 효율적인 스크램블링 또는 디스크램블링 방법 및 시스템을 제공한다. 스크램블링 시스템은 데이터 스트림들을 생성하는 데이터 스트림 생성부, 상기 생성된 데이터 스트림들 각각에 대한 시퀀스 출력을 산출하는 스크램블링 LFSR 그룹, 및 상기 산출된 시퀀스 출력을 이용하여 상기 생성된 데이터 스크림들을 스크램블링하는 스크램블링 처리부를 포함한다. 디스크램블링 시스템은 스크램블링된 데이터를 이용하여 스크램블드 데이터 스트림들로 생성하는 스크램블드 데이터 스트림 생성부, 상기 생성된 스크램블드 데이터 스트림들 각각에 대한 시퀀스 출력을 산출하는 디스크램블링 LFSR 그룹, 및 상기 산출된 시퀀스 출력을 이용하여 스크램블드 데이터 스트림들을 디스크램블링하는 디스크램블링 처리부를 포함한다.
스크램블링, 디스크램블링, scrambling, descrambling, LFSR, LTE-Advanced-
公开(公告)号：KR1020130067636A
公开(公告)日：2013-06-25
申请号：KR1020110134395
申请日：2011-12-14
Applicant: 한국전자통신연구원
IPC: H04L27/26
CPC classification number: H04L27/2627
Abstract: PURPOSE: A base station modem transmission device is provided to reduce loss according to additional resource use and processing time following to individual operation of an encoder and a modulator. CONSTITUTION: A layer 2 interface and modem transmission unit control device(100) processes and supplies necessary information to an encoding and modulation device(200) using information supplied from a layer 2 and a downlink logic channel. The encoding and modulation device mixes encoding and modulation functions suitable for each transmitted channel by downlink physical channel and downlink physical signal and transmits the mixed information to a resource allocation and OFDM(Orthogonal Frequency Division Multiplexing) processing unit. The resource allocation and OFDM processing unit locates a region to a corresponding subcarrier transmitted with respect to the each downlink physical channel and the each downlink physical signal and a time fitting with the same. The resource allocation and OFDM processing unit sequentially performs a process of guard band insertion, IFFT and cyclic prefix addition and transmits the data to an RF device. [Reference numerals] (100) Layer 2 interface and modern transmission unit; (AA) Base modem transmission unit(LTE-Advanced System)
Abstract translation: 目的：提供基站调制解调器传输设备，以根据编码器和调制器的单独操作后的附加资源使用和处理时间来减少损耗。 构成：使用从层2和下行链路逻辑信道提供的信息，层2接口和调制解调器传输单元控制设备（100）处理并向编码和调制设备（200）提供必要的信息。 编码和调制装置通过下行物理信道和下行物理信号混合适用于每个发送信道的编码和调制功能，并将混合信息发送到资源分配和OFDM（正交频分复用）处理单元。 资源分配和OFDM处理单元将区域定位到相对于每个下行链路物理信道和每个下行链路物理信号发送的相应子载波和与其相适应的时间。 资源分配和OFDM处理单元顺序执行保护带插入，IFFT和循环前缀相加处理，并将数据发送到RF设备。 （附图标记）（100）二层接口和现代传输单元; （AA）基本调制解调器传输单元（LTE-Advanced系统）
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公开(公告)号：KR1020130004053A
公开(公告)日：2013-01-09
申请号：KR1020120027900
申请日：2012-03-19
Applicant: 한국전자통신연구원
IPC: H04J11/00
CPC classification number: H04J11/003
Abstract: PURPOSE: A multiple power sequence generating method and an apparatus for the same are provided to generate a multiple output sequence by using output of a linear feedback shift register. CONSTITUTION: A multiple power sequence generating apparatus includes a register update unit(100), a transfer unit(200), and a multiple output generating unit(300). A scrambling sequence generating apparatus includes a scrambling sequence calculation unit(400). The register update unit, the transfer unit, and the multiple output generating unit include a stage of a shift register. The transfer unit transfers an output value outputted to a stage of the register update unit. The multiple output generating unit generates a multiple output of the linear shift register. [Reference numerals] (100) Register update unit; (200) Transfer unit; (300) Multiple output generating unit; (400) Scrambling sequence calculation unit
Abstract translation: 目的：提供多功率序列产生方法及其装置，以通过使用线性反馈移位寄存器的输出来产生多输出序列。 构成：多功率序列产生装置包括寄存器更新单元（100），传送单元（200）和多输出生成单元（300）。 加扰序列生成装置包括加扰序列计算部（400）。 寄存器更新单元，传送单元和多输出生成单元包括移位寄存器的级。 传送单元将输出的输出值传送到寄存器更新单元的级。 多路输出产生单元生成线性移位寄存器的多路输出。 （附图标记）（100）寄存器更新单元; （200）转运单位; （300）多输出发生单元; （400）加扰序列计算单元
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公开(公告)号：KR1020120040441A
公开(公告)日：2012-04-27
申请号：KR1020100101866
申请日：2010-10-19
Applicant: 한국전자통신연구원
CPC classification number: G06F13/4243
Abstract: PURPOSE: A data transmission apparatus and symbol formation method thereof are provided to successively create symbols by preventing an interface collision between hardware resources of a transmission apparatus. CONSTITUTION: A data storage unit(10) stores transmission data in a memory apparatus(30). The memory apparatus stores a data block by responding the control of the data storage unit. A symbol creating unit(53) of a data processing unit(50) creates a symbol in a bit unit for the data block which is temporally stored in a buffer memory unit. A symbol arrangement unit(55) of the data processing unit lines up for the created symbol.
Abstract translation: 目的：提供数据发送装置及其符号形成方法，通过防止发送装置的硬件资源之间的接口冲突来连续地创建符号。 构成：数据存储单元（10）将发送数据存储在存储装置（30）中。 存储装置通过响应数据存储单元的控制来存储数据块。 数据处理单元（50）的符号创建单元（53）为暂时存储在缓冲存储器单元中的数据块的位单元生成符号。 数据处理单元的符号排列单元（55）对所创建的符号进行排队。
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Patent Agency Ranking
公开(公告)号：KR1020090062938A
公开(公告)日：2009-06-17
申请号：KR1020070130426
申请日：2007-12-13
CPC classification number: H04L27/2628 , H04L27/2655
Abstract: An apparatus and a method for modulating a base station are provided to modulate a physical channel per a sector to prevent interface conflict between hardware, thereby performing stable modulation. A physical channel generating module(151) successively obtains a transmission channel or a physical control channel per a sector according to each control information. The channel generating module generates a physical channel including data of the obtained transmission channel or physical control channel and successively transmits the physical channel to a modulation unit(160). A main controlling module(152) controls successive modulation of a physical channel per a sector.
Abstract translation: 提供了一种用于调制基站的装置和方法，以调制每个扇区的物理信道，以防止硬件之间的接口冲突，从而执行稳定的调制。 物理信道生成模块（151）根据各控制信息依次获取每个扇区的传输信道或物理控制信道。 信道生成模块生成包括所获得的传输信道或物理控制信道的数据的物理信道，并且将物理信道连续发送到调制单元（160）。 主控制模块（152）控制每个扇区的物理信道的连续调制。
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公开(公告)号：KR1020090009694A
公开(公告)日：2009-01-23
申请号：KR1020080042907
申请日：2008-05-08
Applicant: 한국전자통신연구원
IPC: H04B1/7083
CPC classification number: H04W48/16 , H04B1/70735 , H04B7/2656 , H04J11/0069 , H04L7/043 , H04L27/2613 , H04L27/2655 , H04W56/00 , H04W72/042 , H04W72/0446 , H04W88/08
Abstract: A method for generating a downlink frame and a method for searching a cell are provided to improve cell searching performance by reducing interference between sectors by scrambling a short sequence to a scrambling sequence. A first shot sequence and a second short sequence expressing cell group information are generated. A first scrambling sequence and a second scrambling sequence determined by the first synchronous signal are generated. A third scrambling sequence determined by the first shot sequence and a fourth scrambling sequence determined by the second short sequence are generated. The first shot sequence is scrambled to the first scrambling sequence. The second short sequence is scrambled to the second scrambling sequence and the third scrambling sequence. The second short sequence is scrambled to the first scrambling sequence. The first shot sequence is scrambled to the second scrambling sequence and fourth scrambling sequence(S510). A down link frame including the first short sequence scrambled to the first scrambling sequence, the second short sequence scrambled to the second scrambling sequence and the third scrambling sequence, the second short sequence scrambled to the first scrambling sequence, and the first short sequence scrambled to the second scrambling sequence and the fourth scrambling sequence is generated(S530). The frame of the inputted downlink signal is transmitted through the transmission antenna(S540).
Abstract translation: 提供了一种用于生成下行链路帧的方法和用于搜索小区的方法，以通过将短序列加扰到加扰序列来减少扇区之间的干扰来改善小区搜索性能。 生成表示单元组信息的第一次序列和第二个短序列。 产生由第一同步信号确定的第一加扰序列和第二加扰序列。 产生由第一短播序列确定的第三加扰序列和由第二短序列确定的第四加扰序列。 第一个播放序列被加扰到第一个加扰序列。 第二短序列被加扰到第二加扰序列和第三加扰序列。 将第二短序列加扰到第一加扰序列。 将第一播放序列加扰到第二加扰序列和第四加扰序列（S510）。 包括被加扰到第一加扰序列的第一短序列的下行链路帧，被加扰到第二加扰序列的第二短序列和第三加扰序列，加扰到第一加扰序列的第二短序列，以及加扰到 产生第二加扰序列和第四加扰序列（S530）。 通过发送天线发送输入的下行链路信号的帧（S540）。
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公开(公告)号：KR1020090009693A
公开(公告)日：2009-01-23
申请号：KR1020080042444
申请日：2008-05-07
Applicant: 한국전자통신연구원
CPC classification number: H04W48/16 , H04B1/70735 , H04B7/2656 , H04J11/0069 , H04L7/043 , H04L27/2613 , H04L27/2655 , H04W56/00 , H04W72/042 , H04W72/0446 , H04W88/08
Abstract: A method for generating a downlink frame and a method for searching a cell are provided to reduce interference between sectors by scrambling a short sequence to a scrambling sequence. A sequence generator generates a plurality of short sequences and a plurality of scrambling sequences for reducing the adjacent cell interference and transmits the generated sequence to a synchronization signal generator(S510). The synchronization signal generator generates a secondary synchronization signal by using the short sequence and the scrambling sequence received from the sequence generator(S520). A frequency mapping unit generates a downlink frame by mapping data to be transmitted to time and frequency domains by using transmission traffic data and the secondary synchronization signal generated in the synchronization signal generator(S530). An OFDM transmitter transmits the frame of the downlink signal through a transmission antenna(S540).
Abstract translation: 提供了一种用于产生下行链路帧的方法和用于搜索小区的方法，以通过将短序列加扰到加扰序列来减少扇区之间的干扰。 序列生成器生成多个短序列和多个加扰序列，用于减少相邻小区干扰，并将生成的序列发送到同步信号发生器（S510）。 同步信号发生器通过使用从序列发生器接收的短序列和加扰序列产生辅同步信号（S520）。 频率映射单元通过使用在同步信号发生器中产生的传输业务数据和次同步信号，映射要发送到时域和频域的数据来生成下行链路帧（S530）。 OFDM发射机通过发送天线发送下行链路信号的帧（S540）。
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公开(公告)号：KR100874019B1
公开(公告)日：2008-12-17
申请号：KR1020070115332
申请日：2007-11-13
Applicant: 한국전자통신연구원
CPC classification number: H04L27/261 , H04B7/2603 , H04W72/0446
Abstract: A mapping method and a puncturing method for a cell specific reference signal are provided to make a receiver estimate a channel by using the cell specific reference signal by providing a simplified puncturing regulation for removing waste data generated when transmitting the cell specific reference signal. A first parameter is deduced based on a corresponding symbol index and a slot index(S102). A second parameter is deduced based on the corresponding hopping ID index. A third parameter is deduced based on a corresponding antenna index. A mapping address is calculated by using the value multiplying the weighted value corresponding to the second parameter by the result to perform the modulus 2 operation of the sum of the first parameter and the third parameter(S103). The cell specific address is mapped to a corresponding slot by using the mapping address(S104).
Abstract translation: 提供用于小区特定参考信号的映射方法和删截方法，以便通过提供用于去除在发送小区特定参考信号时产生的废弃数据的简化删截规则，通过使用小区特定参考信号来使接收机估计信道。 基于相应的符号索引和时隙索引推导第一参数（S102）。 基于相应的跳频ID索引推导出第二个参数。 基于相应的天线索引推导出第三参数。 通过使用将与第二参数对应的加权值乘以结果的值来执行映射地址，以执行第一参数和第三参数的和的模数2运算（S103）。 通过使用映射地址将单元特定地址映射到相应的时隙（S104）。
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公开(公告)号：KR1020080039785A
公开(公告)日：2008-05-07
申请号：KR1020070098706
申请日：2007-10-01
CPC classification number: H04L5/0053 , H04B7/0604 , H04J11/0076 , H04L5/0023 , H04L5/005 , H04L27/2692
Abstract: A method and an apparatus for creating common channels in an uplink are provided to improve the receive ability of mobile stations by efficiently allocating resources in the case of creating common channels in a downlink. An apparatus for creating common channels for an uplink in a base station having a plurality of antennas comprises a common channel generation part(100), an antenna mapping part(400), a multiplexing part(500), and a scrambling part(600). The common channel generation part generates common channel signals to create a common channel to transmit common data which will be provided to a plurality of mobile stations through the downlink. The antenna mapping part maps the generated common channel signals to the antennas respectively. The multiplexing part receives the mapped common channel signals according to the antennas, sequentially allocates them to subcarriers and time resources, and outputs a single symbol. Using a scramble sequence, the scrambling part scrambles the outputted symbol.
Abstract translation: 提供一种用于在上行链路中创建公共信道的方法和装置，用于通过在下行链路中创建公共信道的情况下有效地分配资源来提高移动台的接收能力。 一种用于在具有多个天线的基站中创建用于上行链路的公共信道的装置，包括公共信道生成部分（100），天线映射部分（400），复用部分（500）和加扰部分（600） 。 公共信道生成部分生成公共信道信号以创建公共信道以发送将通过下行链路提供给多个移动台的公共数据。 天线映射部分将所生成的公共信道信号分别映射到天线。 多路复用部分根据天线接收映射的公共信道信号，顺序地将它们分配给子载波和时间资源，并输出单个符号。 使用加扰序列，加扰部分加扰输出的符号。
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