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公开(公告)号：KR1020080082429A
公开(公告)日：2008-09-11
申请号：KR1020070118516
申请日：2007-11-20
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0606 , H04B7/0613 , H04B7/0697 , H04L1/0031 , H04L27/2662
Abstract: A signal transmission method is provided to apply transmission diversity methods of BCH(Broadcast Channel) information variously according to a distance between SCH(Synchronization Channel) information and the BCH information, thereby magnifying a time diversity gain within a TTI(Transmission Time Interval). Plural SCH and BCH symbols are assigned to plural symbol intervals, respectively. The first transmission diversity method is applied to the SCH symbols and BCH symbols adjacent to the SCH symbols. The second transmission diversity method is applied to the BCH symbols isolated from the SCH symbols. The SCH symbols and the BCH symbols are transmitted.
Abstract translation: 提供信号传输方法，以根据SCH（同步信道）信息和BCH信息之间的距离不同地应用BCH（广播信道）信息的传输分集方法，从而放大TTI（传输时间间隔）内的时间分集增益。 分别将多个SCH和BCH符号分配给多个符号间隔。 第一传输分集方法应用于与SCH符号相邻的SCH符号和BCH符号。 第二传输分集方法应用于从SCH符号隔离的BCH符号。 发送SCH符号和BCH符号。
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公开(公告)号：KR1020080064748A
公开(公告)日：2008-07-09
申请号：KR1020080001424
申请日：2008-01-04
CPC classification number: H04L27/2607 , H04L69/323 , H04W74/006 , H04L29/02 , H04W74/0833
Abstract: A random access preamble structure is provided to realize frequency domain at a receiving end through by maintaining preamble sequence used in base preamble equally and extending a CP(cyclic prefix) corresponded to the maximum round trip delay time according to extended cell radius. A method for generating a random access preamble in an extended cell environment comprising: generating a CP(cyclic prefix) which is the sum of a maximum delay spread and the maximum round trip delay time according to the extended cell radius; generating a preamble sequence part.
Abstract translation: 提供随机接入前同步码结构，通过在前同步码中平均维持前同步码序列，根据扩展的小区半径扩展对应于最大往返行程延迟时间的CP（循环前缀）来实现接收端的频域。 一种用于在扩展小区环境中生成随机接入前同步码的方法，包括：根据所述扩展小区半径，生成最大延迟扩展和最大往返延迟时间之和的CP（循环前缀）; 生成前导序列部分。
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公开(公告)号：KR1020080064716A
公开(公告)日：2008-07-09
申请号：KR1020070135233
申请日：2007-12-21
CPC classification number: H04W74/0833 , H04L5/0007 , H04W28/20 , H04W72/02 , H04W72/0453
Abstract: A random access channel allocation method for a scalable bandwidth and a random access method and apparatus are provided to map to time and frequency resources of a random access channel. A terminal compares a reception bandwidth of a base station and a transmission bandwidth of the terminal(S710). If the reception bandwidth of the base station is larger than that of the terminal, the terminal selects one of left and right regions based on a central frequency of the reception band and determines it as a transmission band(S730). The terminal selects one of random access channels allocated to a reception band corresponding to the determined transmission band(S750) and transmits a random access preamble to the selected random access channel(S790).
Abstract translation: 提供了用于可扩展带宽的随机接入信道分配方法和随机接入方法和装置，以映射到随机接入信道的时间和频率资源。 终端比较基站的接收带宽和终端的发送带宽（S710）。 如果基站的接收带宽大于终端的接收带宽，则终端基于接收频带的中心频率选择左右区域中的一个，并将其确定为传输频带（S730）。 终端选择分配给与确定的传输频带相对应的接收频带的随机接入信道之一（S750），并将随机接入前导码发送到所选择的随机接入信道（S790）。
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公开(公告)号：KR1020080052452A
公开(公告)日：2008-06-11
申请号：KR1020070125649
申请日：2007-12-05
Applicant: 한국전자통신연구원
CPC classification number: H04B7/12 , H04B7/068 , H04L1/0606 , H04L5/0023 , H04L25/03343
Abstract: A method for transmitting a signal and information of an antenna, and a method for estimating the number of antennas are provided to enable a mobile station to demodulate a BCH(Broadcast Channel) as channel response obtained through a SCH(Synchronization Channel) by applying the multiple free coding vectors to the BCH and SCH timely close to each other. A base station creates a plurality of SCH symbols out of a cell group identifier and a cell identifier, at this time a part of information about the number of transmission antennas is added to the synchronization channel symbols(S210). The base station creates BCH symbols out of the rest information about the number of transmission antennas(S220). The base station creates a downstream frame by disposing the SCH symbols and the BCH symbols in a symbol section respectively(S230). And the base station transmits the downstream frame(S240).
Abstract translation: 提供一种用于发送天线的信号和信息的方法以及用于估计天线数量的方法，以使得移动台能够通过应用SCH（同步信道）通过SCH（同步信道）获得的信道响应来解调BCH（广播信道） BCH和SCH的多个自由编码向量及时接近。 基站从小区组标识符和小区标识符中创建多个SCH符号，此时将关于发送天线数量的一部分信息添加到同步信道符号（S210）。 基站在关于发送天线数量的休息信息之外创建BCH符号（S220）。 基站通过分别在符号部分中设置SCH符号和BCH符号来创建下行帧（S230）。 并且基站发送下行帧（S240）。
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公开(公告)号：KR1020080020959A
公开(公告)日：2008-03-06
申请号：KR1020070088097
申请日：2007-08-31
Applicant: 한국전자통신연구원
IPC: H04J13/18
CPC classification number: H04W72/04 , H04J11/00 , H04J13/0074 , H04L1/1692 , H04L1/1861 , H04L1/1887 , H04L5/0021 , H04L5/0048 , H04L5/0053 , H04L25/03866 , H04L27/2602
Abstract: A method and an apparatus for transmitting an uplink signal, and a method and an apparatus for generating the uplink signal in a communication system are provided to randomize the interference between users and between cells in a frequency domain CDM(Cond Division Multiplexing) method. A method for transmitting an uplink signal in a terminal comprises the steps of: transmitting a first transmission symbol multiplied by a first sequence for distinguishing the terminal from other terminal, in a first transmission time; and transmitting a second transmission symbol multiplied by a second sequence for distinguishing the terminal from other terminal, in a second transmission time which is different from the first transmission time. The second sequence is different from the first sequence.
Abstract translation: 提供一种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，用于随机化频域CDM（Cond Division Multiplexing）方法中的用户之间和小区之间的干扰。 一种用于在终端中发送上行链路信号的方法包括以下步骤：在第一传输时间中，发送乘以第一序列的第一传输符号，以区分终端与其他终端; 以及在与第一传输时间不同的第二传输时间中，传送乘以用于将终端与其他终端区分开的第二序列的第二传输符号。 第二个序列与第一个序列不同。
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Patent Agency Ranking
公开(公告)号：KR101264327B1
公开(公告)日：2013-05-14
申请号：KR1020070038148
申请日：2007-04-19
Applicant: 한국전자통신연구원
CPC classification number: H04W52/42 , H04B7/0617 , H04B7/0623 , H04B7/0689 , H04B7/12 , H04L1/0001 , H04L1/0006 , H04L1/06 , H04L1/1867 , H04L1/188 , H04L1/1893 , H04L5/0053 , H04L5/023 , H04L27/2626 , H04W52/286 , H04W52/48 , H04W74/085 , H04W74/0866
Abstract: 또한, 본발명에따라 RACH 버스트의성공적인송신에사용된송신파라미터들(서브밴드, 전부호화행렬, 전력등)을사용자패킷데이터의송신에사용함으로써기지국으로의신뢰도있는사용자패킷데이터송신을수행할수 있다.
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公开(公告)号：KR101157301B1
公开(公告)日：2012-06-15
申请号：KR1020080058985
申请日：2008-06-23
CPC classification number: 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
Abstract: 본 발명에서는 복수 개의 단말이 주파수 및 시간 영역으로 이루어지는 자원을 공통으로 사용하는 무선통신시스템에서의 신호형성 방법이 제시된다. 본 발명에 따른 방법은 셀 내 조건정보를 수신하는 단계; 상기 조건정보에 따라 서로 다른 길이를 가지는 복수의 시간영역 상호직교 시퀀스 중 하나를 선택하는 단계; 및 상기 선택된 시간 영역 상호직교 시퀀스를 컨트롤 시그널 심볼블록에 할당하는 단계를 포함하는 것을 특징으로 하는 무선통신시스템에서의 신호형성 방법이 제시된다.
ACK/NAK, CDM, OFDM, 상호직교 시퀀스, DFT, Walsh-Hadamard, Zadoff-ChuAbstract translation: 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，需要有效地执行码分复用（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。
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公开(公告)号：KR1020120027043A
公开(公告)日：2012-03-20
申请号：KR1020120019768
申请日：2012-02-27
CPC classification number: 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 , H04L5/0053 , H04B1/707 , H04L27/2602 , H04W72/1278
Abstract: PURPOSE: A method for transmitting control information in a wireless telecommunication system is provided to efficiently classify a plurality of terminals by using a spreading code using a time axis and a frequency axis. CONSTITUTION: An orthogonal sequence element of a frequency domain having orthogonality is multiplied with the orthogonal sequence element of a time domain in the frequency domain cyclically shifted with a predetermined cyclic shift value. A symbol, in which the orthogonal sequence of the time domain and the orthogonal sequence of the time domain are multiplied, is mapped in an uplink control channel. The uplink control channel is transmitted to a base station. The uplink control channel has 7 OFDM(Orthogonal Frequency Division Multiplexing) symbols having a fixed length per slot. A first OFDM symbol, a second OFDM symbol, a sixth OFDM symbol, and a seventh OFDM symbol are used for transmitting control information. A third OFDM symbol, a fourth OFDM symbol, and a fifth OFDM symbol are used to transmit a reference signal.
Abstract translation: 目的：提供一种用于在无线电信系统中发送控制信息的方法，以便通过使用时间轴和频率轴的扩展码来有效地对多个终端进行分类。 构成：具有正交性的频域的正交序列元素与以预定的循环移位值循环移位的频域中的时域的正交序列元素相乘。 将时域的正交序列和时域的正交序列相乘的符号映射在上行链路控制信道中。 上行链路控制信道被发送到基站。 上行链路控制信道具有每个时隙具有固定长度的7个OFDM（正交频分复用）符号。 第一OFDM符号，第二OFDM符号，第六OFDM符号和第七OFDM符号用于发送控制信息。 使用第三OFDM符号，第四OFDM符号和第五OFDM符号来发送参考信号。
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公开(公告)号：KR1020110084858A
公开(公告)日：2011-07-26
申请号：KR1020110056390
申请日：2011-06-10
Applicant: 한국전자통신연구원
IPC: H04J13/18 , H04B1/7143 , H04L27/26
CPC classification number: H04W72/04 , H04J11/00 , H04J13/0074 , H04L1/1692 , H04L1/1861 , H04L1/1887 , H04L5/0021 , H04L5/0048 , H04L5/0053 , H04L25/03866 , H04L27/2602
Abstract: PURPOSE: A method and device for transmitting/generating an uplink signal of a communication system are provided to change a cyclic shift according to time, thereby randomizing interferences between users and cells. CONSTITUTION: An RF receiving unit(210) receives K user signals transmitted from K terminals and converts the K user signals into baseband signals. An analog to digital converter(220) converts a baseband signal into a digital receiving signal. A CP eliminating unit(230) eliminates a CP(Cyclic Prefix) from the digital receiving signal. A serial/parallel converting unit(240) converts the signal from which the CP is eliminated into a parallel receiving signal. An FFT(250) converts the parallel receiving signal into a frequency domain receiving signal by fast Fourier transform.
Abstract translation: 目的：提供一种用于发送/生成通信系统的上行链路信号的方法和装置，以根据时间改变循环移位，从而使用户和小区之间的干扰随机化。 构成：RF接收单元（210）接收从K个终端发送的K个用户信号，并将K个用户信号转换为基带信号。 模数转换器（220）将基带信号转换为数字接收信号。 CP消除单元（230）从数字接收信号中消除CP（循环前缀）。 串行/并行转换单元（240）将消除CP的信号转换为并行接收信号。 FFT（250）通过快速傅里叶变换将并行接收信号转换成频域接收信号。
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公开(公告)号：KR101012857B1
公开(公告)日：2011-02-08
申请号：KR1020070105209
申请日：2007-10-18
CPC classification number: H04J11/0069 , H04L5/0007 , H04L5/0023 , H04L5/0048 , H04L25/0204 , H04L25/0226 , H04L25/0228 , H04L25/03866 , H04L27/261 , H04L27/2613 , H04L27/2656 , H04L27/2657 , H04L27/2675 , H04W56/0085 , Y02D70/00 , Y02D70/1262
Abstract: 본 발명은 제1차 동기채널과 제2차 동기채널이 TDM으로 구성된 OFDM 셀룰라 시스템에서의 셀 탐색 방법에 관한 것으로, 단말이 수신한 프레임에 포함된 1차 동기채널 심볼을 이용하여 싱크블록 동기 및 1차 동기채널 시퀀스 번호를 획득하는 단계, 상기 싱크블록 동기 및 상기 단말이 수신한 프레임에 포함된 2차 동기채널 심볼을 이용하여 상기 프레임의 경계 및 스크램블링 코드 그룹을 검출하는 단계 및 상기 1차 동기채널 시퀀스 번호 및 상기 스크램블링 코드 그룹을 이용하여 스크램블링 코드를 획득하는 단계를 포함하는 것을 특징으로 하며, 낮은 복잡도로 셀 탐색 시간을 줄일 수 있다.
OFDM, 동기채널, 셀 탐색, BCHAbstract translation: 提供了使用正交频分复用（OFDM）的蜂窝系统中的前向链路，公共导频信道结构和初始小区搜索方法以及用于切换的相邻小区搜索方法的同步信道。 基于时分复用（TDM）配置主同步信道和辅同步信道的OFDM蜂窝系统中的小区搜索方法包括：使用包括在主同步信道符号中的主同步信道符号来获取同步块同步和主同步信道序列号 由终端接收的帧，检测帧的边界和使用同步块的扰码组和由终端接收的帧中包括的辅同步信道符号，以及使用主同步信道序列号获取扰码，并且 扰码组，从而以低复杂度减少小区搜索时间。
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