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公开(公告)号：KR1020100084955A
公开(公告)日：2010-07-28
申请号：KR1020090039231
申请日：2009-05-06
Applicant: 한국전자통신연구원 , 영남대학교 산학협력단
CPC classification number: H04L27/2614 , H04B7/18519
Abstract: PURPOSE: By presuming the large-scale fading value of user and controlling the power control mode the control method for minimizing the PAR can minimize PAR. CONSTITUTION: A large-scale fading values of all users are presumed. The number of users in which the large-scale fading value bigger than the standards fading value is counted. The number of subcarrier which users counted use is counted. It is controlled to the power control mode. The large-scale amplitude value of user is presumed. The TX power is adjusted if the large-scale amplitude value is not similar of the reference amplitude value(320). The transmission signal becomes to the TX power adjusted(330).
Abstract translation: 目的：通过假设用户的大规模衰落值并控制功率控制模式，使PAR最小化的控制方法可以最小化PAR。 构成：推测所有用户的大规模衰落值。 大规模衰落值大于标准衰落值的用户数被计数。 对用户计数使用的子载波数进行计数。 它被控制到电源控制模式。 推测用户的大幅度振幅值。 如果大幅度振幅值与参考振幅值（320）不相似，则TX功率被调整。 发送信号变为TX功率调整（330）。
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公开(公告)号：KR1020100071642A
公开(公告)日：2010-06-29
申请号：KR1020080130432
申请日：2008-12-19
Applicant: 한국전자통신연구원
CPC classification number: H04B7/18563
Abstract: PURPOSE: A frequency sharing driver and a method thereof of the mobile satellite service using the ground auxiliary device of satellite and satellite are provided to reuse the frequency band of the satellite down link in the satellite ground auxiliary device of the ground. CONSTITUTION: A signal intensity measurement part(205) measures the signal intensity received from the satellite. According to the communications mode decision part(207) is the signal intensity measured at as described above, the communications mode is decided. According to the communications unit(209) is the communications mode, it communicates among the ground auxiliary device of satellite and satellite with one apparatus.
Abstract translation: 目的：提供使用卫星和卫星的地面辅助设备的移动卫星业务的频率共享驱动程序及其方法，以重用地面卫星地面辅助设备中的卫星下行链路的频带。 构成：信号强度测量部分（205）测量从卫星接收的信号强度。 根据通信模式决定部（207）是如上所述测量的信号强度，决定通信模式。 根据通信单元（209）是通信模式，它在卫星和卫星的地面辅助装置与一个装置之间进行通信。
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公开(公告)号：KR1020100063332A
公开(公告)日：2010-06-11
申请号：KR1020080121805
申请日：2008-12-03
Applicant: 한국전자통신연구원
IPC: H04L1/18
CPC classification number: H04L1/187 , H04L1/1874
Abstract: PURPOSE: A method for interaction between ARQ and HARQ of a system with a long shuttling delay time is provided to quickly cope with a transmission error by re-transmitting a packet of a window on standby when an error in which NACk of HARQ is mistaken for ACK occurs. CONSTITUTION: A transmission buffer(210) and a transmit window are influenced by the HARQ feedback information. A buffer on standby(220) and an window on standby are influenced by a status report information packet(230). The buffer on standby detects an error in which NACK is recognized as ACK in HARQ. The buffer on standby re-transmits the packet of the buffer on standby by receiving feedback information concerning the error.
Abstract translation: 目的：提供一种具有长穿梭延迟时间的系统的ARQ和HARQ之间的交互方法，以便当HARQ的NACk被误认为是错误时，通过重新发送待机窗口的分组来快速应对传输错误 发生ACK。 构成：发送缓冲器（210）和发送窗口受到HARQ反馈信息的影响。 处于待机状态的缓冲器（220）和备用窗口受到状态报告信息包（230）的影响。 待机缓冲器检测到在HARQ中将NACK识别为ACK的错误。 待机缓冲区通过接收有关错误的反馈信息重新发送缓冲区的数据包在待机状态。
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公开(公告)号：KR1020100058907A
公开(公告)日：2010-06-04
申请号：KR1020080117492
申请日：2008-11-25
Applicant: 한국전자통신연구원
CPC classification number: H04B7/2041 , H04L5/0023 , H04L5/0037 , H04L5/0069 , H04W72/0453 , H04W72/082 , H04J11/00
Abstract: PURPOSE: A mobile satellite communications apparatus and a method thereof are provided, which maximizes frequency use efficiency. CONSTITUTION: If data are received from a mobile terminal, a satellite signal sensing part(421) senses a satellite signal. A subcarrier deciding unit(423) recognizes a subcarrier group used for communications between a mobile terminal and a satellite using a satellite signal. A communications unit(425) communicates with the mobile terminal using subcarrier groups except for the subcarrier group. If the ground auxiliary device locates in the central area of a beam, the subcarrier deciding unit recognizes the first subcarrier group used in communications between the satellite locating in the border of the beam and the mobile terminal.
Abstract translation: 目的：提供一种使频率使用效率最大化的移动卫星通信装置及其方法。 构成：如果从移动终端接收到数据，则卫星信号检测部（421）感测到卫星信号。 子载波决定单元（423）使用卫星信号识别用于移动终端和卫星之间的通信的子载波组。 通信单元（425）使用除子载波组之外的子载波组与移动终端进行通信。 如果地面辅助设备位于波束的中心区域，则副载波判定单元识别在位于波束边界的卫星与移动终端之间的通信中使用的第一子载波组。
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公开(公告)号：KR1020090110531A
公开(公告)日：2009-10-22
申请号：KR1020080036086
申请日：2008-04-18
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0618 , H04B7/0669 , H04B7/0891 , H04L1/0068
Abstract: PURPOSE: A diversity method using an error correction code is provided to combine an error correction code transmitted from a different relay device in a user terminal, thereby obtaining a diversity gain. CONSTITUTION: A diversity method using an error correcting code comprises the following steps. An input bit string which is an encoding target is error-correction encoded to generate a mother code(302). The generated mother code is punched to obtain an error-correction code including systematic information and particle parity information(304). The obtained error-correction code is transmitted(306).
Abstract translation: 目的：提供一种使用纠错码的分集方法，以组合从用户终端中的不同中继装置发送的纠错码，从而获得分集增益。 构成：使用纠错码的分集方法包括以下步骤。 对作为编码对象的输入位串进行纠错编码，生成母码（302）。 产生的母码被打孔以获得包括系统信息和粒子奇偶校验信息的纠错码（304）。 发送所获得的纠错码（306）。
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Patent Agency Ranking
公开(公告)号：KR100909469B1
公开(公告)日：2009-07-28
申请号：KR1020070132623
申请日：2007-12-17
Applicant: 한국전자통신연구원
CPC classification number: H04L1/0003 , H04L1/0015 , H04L1/0606 , H04L1/0668 , H04L5/0007 , H04L25/03821 , H04L27/2626
Abstract: 송신기는 수신기로부터 피드백 정보를 수신하고, 피드백 정보를 바탕으로 무선 채널의 채널 환경을 예측한다. 이후 채널 환경에 대응하는 변조 방식에 따라 주파수 다중화 신호를 생성하고, 생성된 주파수 다중화 신호를 전송한다. 이를 통해 인접 반송파 간섭을 제거할 수 있다.
반송파, 간섭, OFDM, 주파수 옵셋, 시공간 코드Abstract translation: 发射机从接收机接收反馈信息，并基于反馈信息估计无线电信道的信道环境。 然后，发送器根据信道环境通过调制方法生成频率复用信号，并发送生成的频率复用信号。 以这种方式，可以消除载波间干扰。
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公开(公告)号：KR100873485B1
公开(公告)日：2008-12-15
申请号：KR1020070056626
申请日：2007-06-11
Applicant: 한국전자통신연구원
CPC classification number: H04B7/10
Abstract: An apparatus for tracking polarized waves is provided to track the polarization of transmission signals to a satellite, thereby solving inconsistency of the polarization due to the change in the posture of a satellite or terrestrial terminal and the environment. A polarization tracking apparatus for reception comprises the followings: a feeder(303) which receives vertically and horizontally polarized waves to find out vertical and horizontal polarization factors; a polarization estimator(305) which estimates the deformation of polarization by using the vertical and horizontal polarization factors outputted from the feeder; a polarization controller(307) which controls the amplitude of vertically and horizontally polarized waves and phase information based on the estimated transformation information and signals; and a combiner(311) which combines the vertically and horizontally polarized waves controlled by the controller.
Abstract translation: 提供用于跟踪偏振波的装置，以跟踪到卫星的传输信号的极化，从而解决由于卫星或地面终端的姿势与环境的变化引起的极化不一致。 用于接收的偏振跟踪装置包括：馈送器（303），其接收垂直和水平偏振波以找出垂直和水平极化因子; 极化估计器（305），其通过使用从馈线输出的垂直和水平极化因子来估计偏振变形; 偏振控制器（307），其基于所估计的变换信息和信号来控制垂直和水平极化波的振幅和相位信息; 以及组合器（311），其组合由控制器控制的垂直和水平偏振波。
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公开(公告)号：KR1020080051454A
公开(公告)日：2008-06-11
申请号：KR1020060122548
申请日：2006-12-05
Applicant: 한국전자통신연구원
CPC classification number: H04L27/2662 , H04L27/2675
Abstract: A method and an apparatus for detecting a timing synchronization are provided to obtain a timing synchronization accurately without changing a predefined training symbol. A time synchronization detecting apparatus includes a first sequence generator(10) and a synchronization unit(11). The first sequence generator generates plural first data sequences from a received signal. The synchronization portion correlates the first data sequence with a second data sequence and determines an FFT(Fast Fourier Transform) timing of the received signal by using the correlation result. The first sequence generator includes a mapper, a complex conjugate portion, and a multiplier. The mapper extracts a portion of the received signal and maps the received signal to plural third data sequences. The multiplier multiplies a complex conjugate of the data sequence with other data sequences to output the first data sequence.
Abstract translation: 提供了一种用于检测定时同步的方法和装置，以便在不改变预定训练符号的情况下准确地获得定时同步。 时间同步检测装置包括第一序列发生器（10）和同步单元（11）。 第一序列发生器从接收信号产生多个第一数据序列。 同步部分将第一数据序列与第二数据序列相关，并通过使用相关结果确定接收信号的FFT（快速傅里叶变换）定时。 第一序列生成器包括映射器，复共轭部分和乘法器。 映射器提取接收信号的一部分，并将接收到的信号映射到多个第三数据序列。 乘法器将数据序列的复共轭与其他数据序列相乘以输出第一数据序列。
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公开(公告)号：KR100829860B1
公开(公告)日：2008-05-19
申请号：KR1020060094398
申请日：2006-09-27
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04B7/18541 , H04B7/18543 , Y02D70/122 , Y02D70/164 , Y02D70/446
Abstract: 1. 청구범위에 기재된 발명이 속한 기술분야
본 발명은 ATC(Ancillary Terrestrial Components)를 포함하는 위성/이동통신 시스템에서 핸드오버를 고려한 전력제어 방법에 관한 것임.
2. 발명이 해결하려고 하는 기술적 과제
본 발명은 ATC를 포함하는 다중사용자 위성/이동통신 시스템에서 위치정보를 이용한 효율적인 전력제어 및 핸드오버 기법을 적용하여, 원하는 서비스품질(QoS)을 만족하면서 각 사용자의 수신신호대간섭비를 일정하게 유지할 수 있도록 하기 위한, 핸드오버를 고려한 전력제어 방법을 제공하는데 그 목적이 있음.
3. 발명의 해결방법의 요지
본 발명은, ATC(Ancillary Terrestrial Components)를 포함하는 위성/이동통신 시스템에서의 전력제어 방법에 있어서, 단말기의 현재 위치정보를 획득하는 단계; 상기 단말기의 현재 전송전력 정보를 획득하는 단계; 및 상기 위치정보를 바탕으로 상기 단말기의 위치를 인지하고, 셀 혹은 빔 가장자리에서 상기 단말기의 속도정보를 측정하여, 상기 속도정보에 의한 이동에 따라 수신 다이버시트를 이용해 상기 현재 전송전력 정보와 '상기 단말기가 존재하는 영역에 중첩되는 시스템들의 전송 전력 동작범위'를 바탕으로 핸드오버를 고려한 전력제어를 수행하는 제1 전력제어 단계를 포함한다.
4. 발명의 중요한 용도
본 발명은 ATC를 포함하는 위성 또는 이동통신 시스템 등에 이용됨.
ATC, 핸드오버, 전력제어, 폐루프 전력제어, 개방루프 전력제어, 왕복지연 보상Abstract translation: 提供了考虑在具有辅助地面分量（ATC）的通信系统中的切换的功率控制方法。 功率控制方法包括：a）获取终端的当前位置信息; b）获取终端的当前发送功率信息; 以及c）基于所述位置信息来确认所述终端的位置，测量所述终端在ATC小区或点波束的边界上的速度信息，以及基于当前发射功率信息执行考虑到切换的第一功率控制，以及 通过使用接收分集的速度信息。
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50.发明授权
公开(公告)号：KR100789931B1
公开(公告)日：2008-01-02
申请号：KR1020060089273
申请日：2006-09-14
Applicant: 한국전자통신연구원
CPC classification number: H04L1/1819 , H04L1/1809
Abstract: A method of preventing successive packet errors according to a full receiver buffer in a selective repeat hybrid ARQ(Automatic Repeat Request) system is provided to efficiently use a bandwidth in case of coupling and using a hybrid ARQ and a selective ARQ in a system with a long round trip delay time. A method of preventing successive packet errors according to a full receiver buffer in a selective repeat hybrid ARQ(Automatic Repeat Request) system includes the steps of: transmitting a data packet to a receiver from a central station(401); checking the storage information of the data packet in an NACK(Negative ACKnowledgement) packet(404); storing the data packet in a re-transmission queue after transmitting a packet of parity bits to the receiver in case that the data packet is stored in the buffer(405,406); and maintaining the data packet stored in a transmission queue after re-transmitting the data packet in case that the data packet is not stored in the buffer(407,408).
Abstract translation: 提供了一种在选择性重复混合ARQ（自动重复请求））系统中根据完整接收器缓冲器来防止连续分组错误的方法，用于在具有混合ARQ和选择性ARQ的系统中耦合和使用混合ARQ和选择性ARQ的情况下有效地使用带宽 长途往返延迟时间。 一种在选择性重复混合ARQ（自动重复请求））系统中根据全接收器缓冲器防止连续分组错误的方法包括以下步骤：从中心站（401）向接收机发送数据分组; 在NACK（否定确认）分组（404）中检查数据分组的存储信息; 在数据包被存储在缓冲器中（405,406）的情况下，在将奇偶校验位分组发送到接收机之后，将数据分组存储在重发队列中; 以及在数据分组未存储在缓冲器中的情况下，在重新发送数据分组之后，保持存储在传输队列中的数据分组（407,408）。
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