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公开(公告)号：KR1020120045912A
公开(公告)日：2012-05-09
申请号：KR1020100107800
申请日：2010-11-01
Applicant: 한국전자통신연구원 , 전북대학교산학협력단
CPC classification number: H04L27/34 , H04B7/14 , H04B7/15528 , H04B7/18543
Abstract: PURPOSE: A signal processing method in a relay apparatus is provided to increase spectrum efficiency by utilizing high dimensional modulation method. CONSTITUTION: An external apparatus transmits a signal modulated by a low-dimensional modulation symbol including basic information bit to a repeater(200). The repeater transmits a signal modulated by a high-dimensional modulation symbol including an additional information bit and the restored basic information bit to the terminal(210). The terminal restores the information bit by selecting or combining the signal of the repeater and the signal of the external apparatus(220).
Abstract translation: 目的：提供中继装置中的信号处理方法，通过利用高维调制方法提高频谱效率。 构成：外部设备将由包括基本信息位的低维调制符号调制的信号发送到中继器（200）。 中继器将由包括附加信息位和恢复的基本信息位的高维调制符号调制的信号发送到终端（210）。 终端通过选择或组合中继器的信号和外部设备（220）的信号来恢复信息比特。
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公开(公告)号：KR1020120040554A
公开(公告)日：2012-04-27
申请号：KR1020100102029
申请日：2010-10-19
Applicant: 한국전자통신연구원 , 전북대학교산학협력단
CPC classification number: H04L1/0071 , H03M13/2732 , H03M13/6508 , H03M13/6525 , H04L1/0033 , H04L1/0041
Abstract: PURPOSE: A communication method using symbol interleaving and an apparatus thereof are provided to reduce a data transmission error when AMC(Adaptive Modulation and Coding) is used in an LTE(Long Term Evolution) base satellite communication system. CONSTITUTION: An information exchange unit(110) receives memory information and service information from a terminal device(200). An interleaver use determination unit(120) determines the active condition of an interleaver based on the service information. An interleaver information determination unit(130) determines interleaver information based on resource allocation type information and the memory information. An encoding unit(140) modulates and encodes data. A symbol interleaver(150) interleaves data, which is encoded by using the interleaver information, by symbol. A data transmission unit(160) transmits the data interleaved by the symbol to a terminal.
Abstract translation: 目的：提供使用符号交织的通信方法及其装置，以在LTE（长期演进）基础卫星通信系统中使用AMC（自适应调制和编码）时减小数据传输错误。 构成：信息交换单元（110）从终端设备（200）接收存储器信息和服务信息。 交织器使用确定单元（120）基于服务信息确定交织器的活动状态。 交织信息确定单元（130）基于资源分配类型信息和存储器信息来确定交织器信息。 编码单元（140）对数据进行调制和编码。 符号交织器（150）通过符号对使用交织器信息进行编码的数据进行交织。 数据发送单元（160）将通过符号交替的数据发送到终端。
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公开(公告)号：KR1020110022526A
公开(公告)日：2011-03-07
申请号：KR1020100052257
申请日：2010-06-03
Applicant: 한국전자통신연구원
CPC classification number: H04B7/2041 , H04B7/1851 , Y02D70/10 , H04W72/0486 , H04W16/28 , H04W16/32 , H04W72/0453 , H04W72/046 , H04W72/0473 , H04W84/06
Abstract: PURPOSE: A service providing system in a satellite communication system by allocating resources and power to hierarchical antenna multi beams, and a method thereof are provided to improve the efficiency in the use of power by reducing the power consumption of a system. CONSTITUTION: A service providing system in a satellite communication system includes a satellite(102), a first terminal(170), a gateway(104), a core network(106), an access network(110), a BS(Base Station)(108), a CGC(Complementary Ground Component)(132), and a plurality of terminals. The satellite is a satellite BS configured to provide a communication service by using hierarchical multi-beams. The first terminal is located in a suburb to receive the communication service from the satellite. The gateway is configured to connect signal transmission and reception between the satellite and a terrestrial system. The core network is included in the terrestrial system and configured to transmit and receive signals to and from the satellite through the gateway. The gateway is a centralized gateway or one gateway of geographically distributed gateways, depending on the satellite communication system or requirements from an operator of the satellite communication system. The gateway is connected to the BS as a sub system which is connected to the core network or the access network. In the satellite communication system, the satellite forms the hierarchical multi-beams through an MIMO(Multi-Input Multi-Output) scheme in which one satellite uses a polarization characteristic of an antenna, or a plurality of satellites form the hierarchical multi-beams and transmit a signal to provide a communication service. Accordingly, the data transmission capacity may be increased, and the data reception function may be improved.
Abstract translation: 目的：通过为分层天线多波束分配资源和功率，提供卫星通信系统中的服务提供系统，并提供其方法，以通过降低系统的功耗来提高功率使用的效率。 构成：卫星通信系统中的服务提供系统包括卫星（102），第一终端（170），网关（104），核心网络（106），接入网络（110），基站 ）（108），CGC（互补地面分量）（132）和多个终端。 该卫星是被配置为通过使用分层多波束提供通信服务的卫星BS。 第一个终端位于郊区，从卫星接收通信服务。 网关被配置为连接卫星和地面系统之间的信号传输和接收。 核心网络包括在地面系统中，并配置为通过网关向卫星发送和接收信号。 网关是地理分布式网关的集中式网关或一个网关，这取决于卫星通信系统或卫星通信系统运营商的要求。 网关作为连接到核心网或接入网的子系统连接到BS。 在卫星通信系统中，卫星通过MIMO（多输入多输出）方案形成分层多波束，其中一个卫星使用天线的极化特性，或者多个卫星形成分级多波束， 发送信号以提供通信服务。 因此，可以增加数据传输容量，并且可以提高数据接收功能。
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公开(公告)号：KR1020100063333A
公开(公告)日：2010-06-11
申请号：KR1020080121806
申请日：2008-12-03
Applicant: 한국전자통신연구원
CPC classification number: H04B7/2656 , H04W74/002 , H04L1/0007 , H04W74/0833
Abstract: PURPOSE: A hierarchical random access method for a wireless communication system having very large cell area are provided to design slot length to integral times of basic slot length according to timing error compensation capability, thereby enabling terminals to user various slot lengths. CONSTITUTION: Terminals not having a timing compensation capability uses the first slot(110). According to timing compensation capability, terminals without timing compensation capability uses two more slots(120,130). According to capability of terminals, many RACH slots are assigned to terminals. Therefore, the terminals has much more random access chances at the same time. In hierarchical RACH structure, whole preamble sequence(111) assigned to RACH is assigned according to a layer.
Abstract translation: 目的：提供一种具有非常大的单元区域的无线通信系统的分层随机接入方法，以根据定时误差补偿能力将时隙长度设计为基本时隙长度的整数倍，从而使终端能够使用各种时隙长度。 构成：没有定时补偿功能的端子使用第一个插槽（110）。 根据定时补偿能力，无定时补偿能力的终端使用两个以上的时隙（120,130）。 根据终端的能力，将许多RACH时隙分配给终端。 因此，终端具有更多的随机访问机会。 在分级RACH结构中，分配给RACH的整个前同步码序列（111）根据层被分配。
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公开(公告)号：KR1020070060928A
公开(公告)日：2007-06-13
申请号：KR1020050121133
申请日：2005-12-09
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2657 , H04B7/0842 , H04B7/0857 , H04B7/086 , H04L27/2662 , H04L27/2676
Abstract: A time and frequency offset estimating method and an apparatus using diversity in an OFDM(Orthogonal Frequency Division Multiplexing) communication system are provided to enhance performance in a low SNR(Signal to Noise Ratio) and multi-path environment by using weight. A time and frequency offset estimating apparatus using diversity in an OFDM communication system includes a delay device(101), a first adding device(104), a first summing device(105), a second adding device(107), a second summing device(108), a time offset detecting device(110), and a frequency offset outputting device(111). The delay device(101) delays a received signal by a random index. The first adding device(104) adds a square of the delayed signal and a square of the original received signal. The first summing device(105) adds the adding result of the first adding device(104) as much as the given random number, and calculates a first sum by multiplying the adding result by a value calculated by using weight set for the received signal, signal power, and noise power. The second adding device(107) adds the original received signal and a value obtained by changing a code of an imaginary number part of a complex number of the delayed received signal by the delay device(101). The second summing device(108) adds the adding result of the second adding device(107) as much as the given random number, and outputs a second sum. The time offset detecting device(110) subtracts an absolute value of the second summing device(108) and the result value of the first summing device(105), and detects a maximum value. The frequency offset outputting device(111) outputs an angle for the absolute value of the second summing device(108), and outputs a frequency offset by using a time offset detected by the time offset detecting device(110).
Abstract translation: 提供了OFDM（正交频分复用）通信系统中的时间和频率偏移估计方法和使用分集的装置，以通过使用权重来增强低SNR（信噪比）和多路径环境中的性能。 在OFDM通信系统中使用分集的时间和频率偏移估计装置包括延迟装置（101），第一加法装置（104），第一加法装置（105），第二加法装置（107），第二加法装置 （108），时间偏移检测装置（110）和频率偏移输出装置（111）。 延迟装置（101）通过随机索引来延迟接收到的信号。 第一加法装置（104）将延迟信号的平方和原始接收信号的平方相加。 第一求和装置（105）将第一加法装置（104）的相加结果与给定的随机数相加，并且通过将加法结果乘以通过使用为接收信号设置的权重而计算的值来计算第一和， 信号功率和噪声功率。 第二加法装置（107）将原始接收信号和通过延迟装置（101）改变延迟接收信号的复数的虚数部分的代码而获得的值相加。 第二求和装置（108）将第二加法装置（107）的相加结果与给定的随机数相加，并输出第二和。 时间偏移检测装置（110）减去第二求和装置（108）的绝对值和第一求和装置（105）的结果值，并检测最大值。 频率偏移输出装置（111）输出第二求和装置（108）的绝对值的角度，并通过使用由时间偏移检测装置（110）检测出的时间偏移来输出频率偏移。
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Patent Agency Ranking
公开(公告)号：KR1020170089609A
公开(公告)日：2017-08-04
申请号：KR1020160010025
申请日：2016-01-27
Applicant: 한국전자통신연구원
CPC classification number: H04W76/14 , H04B7/18506 , H04W16/14 , H04W24/02 , H04W76/11 , H04W84/105
Abstract: 본발명은무인기의안정적운용및 무인기수요확대를위해, 국가공역에서한정적인무인기제어전용주파수대역에서다수의무인기를효율적으로운용할수 있는무인기제어용통신주파수자원의동적채널할당, 및차세대 P2MP형 CNPC 시스템에도적용가능한새로운 UAS CNPC 시스템에서통신채널및 연결설정방법에관한것이다. 즉, 무인기제어용통신채널동적할당및 관리를지원하기위한지상무선국(GRS)과무인기(UA) 간무인기제어용통신채널의설정방법을제공하며, 지상통제장치(GCS), 지상무선국(GRS), 무인기(UA) 간무인기제어용통신채널의연결설정절차를제공한다.
Abstract translation: 用于稳定运行并且对于UAV UAV式需求本发明中，限制UAV控制所述多个控制UAV可在国家领空频带有效地操作UAV通信频率资源中的唯一的动态信道分配，和下一代P2MP型石油系统 适用于本发明的新UAS CNPC系统中的通信信道和连接建立方法。 也就是说，UAV控制通信信道动态地分配和，和地面站之间以支持管理（GRS）和UAV（UA）提供了用于UAV控制通信信道的设定，地面控制单元（GCS），地面站（GRS），UAV （UA）通信通道进行无人机控制。
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公开(公告)号：KR1020160053562A
公开(公告)日：2016-05-13
申请号：KR1020140152784
申请日：2014-11-05
Applicant: 한국전자통신연구원
Inventor： 김희욱
CPC classification number: H04B7/185 , H04B7/0678 , H04L5/0048 , H04W52/32
Abstract: 본발명은높은전송전력을요구하는위성시스템에서기본 LTE 전송프레임구조를바꾸지않으면서휴대형단말간의통신에서보다많은링크마진을확보할수 있는전송기법을통해기존 LTE 무선인터페이스와호환성을가지면서동시접속가능한많은수의저속데이터채널을확보할수 있고주파수효율을높일수 있는, LTE 기반의위성무선인터페이스에서저속데이터전송방법에관한것이다.
Abstract translation: 公开了一种基于LTE的卫星无线接口中的低速率数据传输方法，其能够通过传输技术获得大量能够同时访问和提高频率效率的低速数据信道，同时具有与现有LTE无线接口的兼容性， 可以在不改变需要高传输功率的卫星系统中的基本LTE传输帧结构的情况下，在便携式终端之间的通信中获得更多的链路余量。
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公开(公告)号：KR101595525B1
公开(公告)日：2016-02-26
申请号：KR1020100131572
申请日：2010-12-21
Applicant: 한국전자통신연구원
CPC classification number: H04B7/18515 , H01Q25/00 , H04L5/0023 , H04L5/0037 , H04W72/0453 , H04W84/06
Abstract: 본발명은하나이상의안테나피드그룹을통해사용자단말로신호를전송하는다중빔위성시스템에서의주파수선택성구현을위한송신장치로, 상기하나이상의안테나피드그룹들중 하나이상을선택하여, 선택결과를출력하는안테나피드그룹선택부와, 상기안테나피드그룹선택부로부터출력된선택결과에따라순환지연오프셋을결정하여출력하는순환지연오프셋결정부와, 상기빔 형성안테나피드그룹선택부에의해선택된안테나피드그룹을통해전송될신호를상기순환지연오프셋결정부로부터전달된순환지연오프셋을적용하여전송하는송신부를포함한다.
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公开(公告)号：KR101388517B1
公开(公告)日：2014-04-23
申请号：KR1020100102029
申请日：2010-10-19
Applicant: 한국전자통신연구원 , 전북대학교산학협력단
CPC classification number: H04L1/0071 , H03M13/2732 , H03M13/6508 , H03M13/6525 , H04L1/0033 , H04L1/0041
Abstract: LTE 기반의 위성 통신 시스템에서 심볼 인터리버를 이용한 통신 방법 및 통신 장치가 제공된다. 통신 방법은 서비스 정보를 이용하여 인터리버 사용 여부를 결정하고, 인터리버 정보에 기초하여 설계된 심볼 인터리버를 이용하여 데이터를 인터리빙할 수 있다. 그리고, 타이머를 이용하여 랜덤 데이터를 생성하고, 생성한 랜덤 데이터를 인터리빙할 수 있다.
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公开(公告)号：KR1020130030097A
公开(公告)日：2013-03-26
申请号：KR1020110093639
申请日：2011-09-16
Applicant: 한국전자통신연구원
CPC classification number: H04L5/0016 , H04L5/0044 , H04L5/0048 , H04L5/0053 , H04W72/00 , H04W84/06 , H04W72/0453
Abstract: PURPOSE: A method for transmitting and receiving an uplink signal in a wireless communication system is provided to easily raise allocation power per each sub-carrier wave without changing the size of a basic transmission block of an uplink wireless resource. CONSTITUTION: A resource block encodes a second data signal of a second channel by using a first sequence when transmitting a first data signal of a first channel(S100). The resource block additionally encodes the second data signal of the second channel by using a second sequence. The resource block transmits the encoded second data signal. [Reference numerals] (S100) Encoding a signal of a second channel by using a first sequence used in a first channel sharing a transmission block; (S110) Additionally encoding the encoded signal by using a second sequence for resource sharing; (S120) Transmitting the encoded signal through the transmission block
Abstract translation: 目的：提供一种用于在无线通信系统中发送和接收上行链路信号的方法，以容易地提高每个子载波的分配功率，而不改变上行无线资源的基本传输块的大小。 构成：当发送第一信道的第一数据信号时，资源块通过使用第一序列对第二信道的第二数据信号进行编码（S100）。 资源块通过使用第二序列附加地编码第二信道的第二数据信号。 资源块发送编码的第二数据信号。 （附图标记）（S100）通过使用共享传输块的第一信道中使用的第一序列对第二信道的信号进行编码; （S110）另外通过使用用于资源共享的第二序列对编码信号进行编码; （S120）通过传输块发送编码信号
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