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公开(公告)号：KR1020140001567A
公开(公告)日：2014-01-07
申请号：KR1020120069449
申请日：2012-06-27
Applicant: 한국전자통신연구원
CPC classification number: H04W56/001 , H04W48/20 , H04W56/00 , H04W56/005 , H04B7/024
Abstract: When it is worried that an ISI might occur since the downlink synchronization has an error, a terminal receives a ranging response from a base station, modifies the downlink synchronization, and thus the uplink synchronization can be obtained. In a cooperative communication network, an up-down link synchronization acquiring/modifying method capable of effectively preventing the disagreement in signal transmission synchronization of base stations, over-attenuation of transmitted signals, or interference between symbols due to a delay because of the difference between reflection route. [Reference numerals] (AA) Terminal; (BB) Base station 1; (CC) Base station 2; (DD) Base node; (EE) Transmit simultaneous; (S101) Transmit preamble; (S102) Obtain downlink synchronization; (S103) Transmit a ranging signal; (S104) Determine whether to join cooperative communication; (S105) Transmit a ranging response; (S106) Select a service base station; (S107) Deliver a gathered ranging response; (S108) Transmit a gathered ranging response; (S109) Cooperative communication mode?; (S110) Maintain downlink synchronization; (S111,S114) Obtain uplink synchronization; (S112) Is there a smaller timing offset value?; (S113) Modify downlink synchronization
Abstract translation: 当担心由于下行链路同步具有错误而可能发生ISI时，终端从基站接收测距响应，修改下行链路同步，因此可以获得上行链路同步。 在合作通信网络中，能够有效地防止基站的信号传输同步中的不一致，发射信号的过度衰减或由于延迟导致的符号之间的干扰的上下行链路同步获取/修改方法， 反射路线。 （附图标记）（AA）端子; （BB）基站1; （CC）基站2; （DD）基节点; （EE）同时发送; （S101）发送前同步码; （S102）获取下行同步; （S103）发送测距信号; （S104）确定是否加入合作交流; （S105）发送测距响应; （S106）选择服务基站; （S107）提供收集的测距响应; （S108）发送收集的测距响应; （S109）合作通信模式？ （S110）维护下行同步; （S111，S114）获取上行同步; （S112）是否有较小的定时偏移值？ （S113）修改下行同步
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公开(公告)号：KR1020100106936A
公开(公告)日：2010-10-04
申请号：KR1020100026242
申请日：2010-03-24
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A base station, a method for managing a cell, a method for detection a signal, a terminal and a method for transmitting a signal thereof are provided to improve the performance of a terminal positioned at a cell boundary of a mobile communication system and prevent the terminal from operating as interference to a neighboring cell. CONSTITUTION: A base station(100) allocates a resource to a terminal and transmits and receives data to and from the terminal. A receiver(111) receives information an environment of the terminal from the terminal positioned at the boundary between cells. A serving base station and a neighbor base station transmit and receive signals to and from each other through a backbone network. A resource allocator(113) allocates the resource to the terminal on the basis of the allocation information received from the neighbor base station. A signal detector(114) receives the signals from the terminal positioned at the cell boundary and another terminal positioned in the cell and then detects a transmission signal of the terminal by removing the reception signal from the terminal. The signal detector uses joint detection.
Abstract translation: 目的：提供基站，用于管理小区的方法，用于检测信号的方法，终端及其发送信号的方法，以提高位于移动通信系统的小区边界处的终端的性能，以及 防止终端作为对相邻小区的干扰而起作用。 构成：基站（100）向终端分配资源，并向终端发送数据和从终端接收数据。 接收机（111）从位于小区之间的边界处的终端接收终端的环境的信息。 服务基站和邻近基站通过骨干网络彼此发送和接收信号。 资源分配器（113）根据从邻近基站接收到的分配信息向终端分配资源。 信号检测器（114）接收来自位于小区边界的终端的信号和位于小区中的另一个终端，然后通过从终端去除接收信号来检测终端的发送信号。 信号检测器采用联合检测。
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公开(公告)号：KR1020100064278A
公开(公告)日：2010-06-14
申请号：KR1020090025586
申请日：2009-03-25
CPC classification number: H04B7/08 , H04L27/2647
Abstract: PURPOSE: If a symbol which beam is formed and a symbol which beam is not formed are mixed in one frame, a device for gain control and a method for receiving signal are provided to revise a wireless signal by considering a average power of the symbol which beam is formed, thereby performing an accurate gain control. CONSTITUTION: A map interpreter grasps a symbol section which beam is formed among wireless signals. According to output of a map interpreter, a power calculator(620) calculates average power of the symbol section which beam is formed. A gain calculator(630) outputs a gain control signal from output of the power calculator. A switch(650) outputs a gain from the gain control signal. Based on a gain, the wireless signal is revised.
Abstract translation: 目的：如果一个波束形成的符号和没有形成波束的符号混合在一个帧中，则提供增益控制装置和接收信号的方法，以通过考虑无线信号的平均功率来修正无线信号 形成光束，从而执行精确的增益控制。 构成：地图解释器掌握在无线信号之间形成波束的符号部分。 根据映射解释器的输出，功率计算器（620）计算形成该光束的符号部分的平均功率。 增益计算器（630）从功率计算器的输出输出增益控制信号。 开关（650）从增益控制信号输出增益。 基于增益，无线信号被修改。
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公开(公告)号：KR1020090053147A
公开(公告)日：2009-05-27
申请号：KR1020070119825
申请日：2007-11-22
CPC classification number: H04L25/067 , H04L25/03203 , H04L2025/03426 , H04L1/02 , H04B7/0413
Abstract: 본 발명은 후보 벡터 검출 방법 및 이를 이용한 송신 심볼 검출 방법에 관한 것이다.
본 발명에 따르면, 공간 다중화 방식을 사용하는 다중 송수신 시스템에서 수신기는 재정렬된 복수의 레이어 중 마지막 행에 위치하는 레이어에 해당하는 후보 벡터들을 선택하고, 그 다음 레이어의 성상점들을 선택된 후보 벡터 별로 차례대로 나열한다. 그리고, 나열된 성상점들 중에서 복수의 임시성상점을 선택하고, 임시성상점들의 누적비용을 산출하여 최소누적비용을 보이는 성상점에 대응하여 후보 벡터를 선택한다. 이후, 후보 벡터로 선택된 성상점 대신 새로운 임시성상점을 선택하고 선택된 임시성삼점의 누적비용과 나머지 임시성상점들의 누적비용을 비교하여 또 다른 후보 벡터를 선택한다.
공간 다중화, MIMO, 다중 송수신 시스템, 후보 벡터, 송신 심볼, 로그우도비-
Patent Agency Ranking
公开(公告)号：KR1020090020247A
公开(公告)日：2009-02-26
申请号：KR1020070084846
申请日：2007-08-23
CPC classification number: H04L25/03318 , H04L25/0204 , H04L25/0246 , H04L25/067
Abstract: A log likelihood ratio calculating method, a transmission signal detecting method and a receiver are provided to detect a transmission signal by using the log likelihood ratio calculating method which has lower complexity and excellent performance in an MIMO(Multiple Input Multiple Output) system using the SM(Spatial Multiplexing) method. A signal processing unit(110) performs the scrambling, error correcting coding and interleaving for transmission data, and then outputs the processed data. A symbol mapping unit(120) converts the transmission data signal-processed by the signal processing unit into high-speed symbols, and then outputs the converted results. A de-multiplexer(130) divides the high-speed symbols into four low-speed layers, outputs the divided results, and then transmits the four outputted low-speed layers through each transmission antenna, at the same time. A channel estimating and layer sorting unit(210) perform the channel estimation and re-arranges/outputs layers and channels. A candidate group setting unit(220) determines transmission symbol candidate vectors by using the re-arranged layers and channels. An LLR calculation unit(230) produces soft decision values of each bit of a plurality of layers. A multiplexer(240) and signal processing unit(250) perform the inverse functions of the de-multiplexer and signal processing unit of a transmitter(100), execute the channel decoding by using the produced soft decision values, and then detect transmission signals.
Abstract translation: 提供对数似然比计算方法，传输信号检测方法和接收机，通过使用在使用SM的MIMO（多输入多输出）系统中具有较低复杂度和优异性能的对数似然比计算方法来检测传输信号 （空间复用）方法。 信号处理单元（110）对发送数据进行加扰，纠错编码和交织，然后输出处理后的数据。 符号映射单元（120）将由信号处理单元进行了信号处理的发送数据转换为高速符号，然后输出转换结果。 解复用器（130）将高速符号划分为四个低速层，输出分割结果，然后同时通过每个发送天线发送四个输出的低速层。 信道估计和层分类单元（210）执行信道估计并重新布置/输出层和信道。 候选组设定单元（220）通过使用重新布置的层和信道来确定发送符号候选向量。 LLR计算单元（230）产生多个层的每个比特的软判决值。 复用器（240）和信号处理单元（250）执行发射机（100）的解复用器和信号处理单元的反向功能，通过使用所产生的软判决值来执行信道解码，然后检测传输信号。
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公开(公告)号：KR1020080051992A
公开(公告)日：2008-06-11
申请号：KR1020060123915
申请日：2006-12-07
CPC classification number: H04L25/03242 , H04L1/0631
Abstract: A method for detecting a space-time code in a mobile communication system is provided to detect a space-time code B for plural transmission antennas using a newly defined ML matrix and perform two dependent sphere decoding of the newly defined ML matrix, thereby reducing the amount of matrix operation. A method for detecting a space-time code in a mobile communication system comprises the following steps of: receiving signals from the nr number of receiving antennas; determining whether channels from transmission antennas 3,4 are better than the conditions of channels from transmission antennas 1,2; performing Cholesky decomposition for acquiring the F of an ML(Maximum Likelihood) matrix generated for performing sphere decoding; detecting x3 and x4 using two dependent sphere decoders; detecting x1 and x2 using a single symbol detection method; performing the Cholesky decomposition when the channels from the transmission antennas 1,2 are better than the conditions of the channels from the transmission antennas 3,4; detecting the x1 and the x2 using the two sphere decoders previously; detecting the x3 and the x4 using the single symbol detection method; and updating the radiuses of the sphere decoders if the x1, the x2, the x3, and the x4 are all detected.
Abstract translation: 提供了一种用于检测移动通信系统中的时空码的方法，以使用新定义的ML矩阵来检测多个发射天线的时空码B，并对新定义的ML矩阵执行两个依赖球解码，由此减少 矩阵运算量。 一种用于检测移动通信系统中的时空码的方法，包括以下步骤：从nr个接收天线接收信号; 确定来自发射天线3,4的信道是否优于来自发射天线1,2的信道的条件; 执行Cholesky分解以获取用于执行球体解码生成的ML（最大似然）矩阵的F; 使用两个相关球面解码器检测x3和x4; 使用单个符号检测方法检测x1和x2; 当来自发送天线1,2的信道优于来自发送天线3,4的信道的条件时，执行Cholesky分解; 以前使用两个球体解码器检测x1和x2; 使用单符号检测方法检测x3和x4; 并且如果全部检测到x1，x2，x3和x4，则更新球解码器的半径。
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公开(公告)号：KR101697749B1
公开(公告)日：2017-02-01
申请号：KR1020130106509
申请日：2013-09-05
Applicant: 한국전자통신연구원
Abstract: 분리형기지국시스템이개시된다. 일실시예에따른분리형기지국시스템은국사측에설치된특정무선통신방식에따른복수의디지털유닛(Digital Unit, DU), 가입자측에설치된특정무선통신방식에따른복수의라디오유닛(Radio Unit, RU), 및이 복수의디지털유닛(DU)과이 복수의라디오유닛(RU) 사이의연결관계가동적으로변경될수 있는클라우드기지국스위치(cloud base station switch)를포함한다.
Abstract translation: 公开了一种可拆卸的基站。 根据本发明实施例的可拆卸基站包括：根据安装在中心局侧的特定无线通信系统的多个数字单元（DU）; 根据安装在用户侧的特定无线通信系统的多个无线电单元（RU）; 并且使得能够动态地改变DU和RU之间的连接的云基站交换机。 （附图标记）（142）运动控制单元
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公开(公告)号：KR1020160082465A
公开(公告)日：2016-07-08
申请号：KR1020150179917
申请日：2015-12-16
Applicant: 한국전자통신연구원
Abstract: 본발명의일 실시예에따른기지국은다중빔 영역으로다중빔을전송하는기지국에있어서, 상기다중빔 영역으로전송되는상기다중빔을통한하향링크제어신호의전송여부및 전송구간중 적어도어느하나를결정하는결정부, 상기하향링크제어신호의전송여부, 상기하향링크제어신호의전송구간및 상기다중빔에접속된단말을대상으로접속빔의변경을유도하는유도정보중 적어도어느하나를포함하는신호전송제어정보를생성하는생성부, 상기신호전송제어정보를상기다중빔 영역또는상기다중빔으로하향링크전송하는통신부, 및상기신호전송제어정보에기초하여상기하향링크제어신호의전송을제어하는제어부를포함할수 있다.
Abstract translation: 本发明的实施例涉及将多光束发射到多光束区域的基站。 基站包括：确定单元，用于通过发送到多波束区域的多波束来确定是否发送下行链路控制信号中的至少一个;以及发送部分; 用于产生信号传输控制信息的生成单元，其包括关于是否发送下行链路控制信号的信息中的至少一条信息，关于下行链路控制信号的发送部分的信息以及关于改变连接的诱导的信息 连接到多光束的终端的射束瞄准; 通信单元，用于执行信号传输控制信息到多光束区域或多光束的下行链路传输; 以及控制单元，用于基于信号传输控制信息来控制下行链路控制信号。 由此，能够减少基站的发送功率的浪费。
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公开(公告)号：KR1020160081742A
公开(公告)日：2016-07-08
申请号：KR1020150040843
申请日：2015-03-24
Applicant: 한국전자통신연구원
Abstract: 본발명은하이브리드빔-포밍기반무선통신시스템에있어서사용자단말에적응적으로빔을제어하기위한장치및 방법에관한것이다. 본발명의다양한실시예에의하면, 사용자단말의특성에따라빔 폭, 빔이득, 빔개수등의빔 특성을능동적으로제어할수 있는빔 제어장치및 방법을제공할수 있다.
Abstract translation: 本发明涉及一种用于在基于混合波束成形的无线通信系统中将用户终端自适应地控制波束的装置和方法。 根据本发明的各种实施例，提供了一种能够根据用户终端的性质主动地控制诸如波束宽度，波束增益，波束数等的波束特性的波束控制装置及其方法。 该装置包括传输模块，接收模块，波束形成模块和处理器。
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