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公开(公告)号：KR1020080005057A
公开(公告)日：2008-01-10
申请号：KR1020070011013
申请日：2007-02-02
CPC classification number: H04B7/26 , H04W28/06 , H04W72/042 , H04W28/04 , H04L27/26
Abstract: A method and an apparatus for allocating radio resources in a communication system are provided to notify a terminal of a pattern sequence indicating radio resources differently allocated and resource allocation information based on the pattern sequence, thereby notifying the terminal of the location of the radio resources while reducing the size of the radio resource allocation information. A method for transmitting resource allocation information for plural radio resources to a terminal comprises the following steps of: displaying radio resources differently allocated before the transmission of the resource allocation information among the plural radio resources on a first pattern sequence; generating the resource allocation information for the plural radio resources based on the first pattern sequence(S120); and transmitting a second pattern sequence corresponding to the first pattern sequence and the radio resource information for the second pattern sequence to the terminal(S130).
Abstract translation: 提供一种在通信系统中分配无线电资源的方法和装置，用于向终端通知指示不同分配的无线电资源的模式序列和基于模式序列的资源分配信息，从而向终端通知无线电资源的位置，同时 减少无线电资源分配信息的大小。 一种用于向终端发送用于多个无线电资源的资源分配信息的方法包括以下步骤：在第一模式序列上显示在多个无线电资源之间发送资源分配信息之前不同地分配的无线电资源; 基于所述第一图案序列生成所述多个无线资源的资源分配信息（S120）; 以及将与所述第一模式序列对应的第二模式序列和所述第二模式序列的无线电资源信息发送到所述终端（S130）。
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公开(公告)号：KR100706634B1
公开(公告)日：2007-04-11
申请号：KR1020040092587
申请日：2004-11-12
CPC classification number: H04B7/061 , H04B7/0669 , H04B7/0691 , H04B7/08 , H04L1/0003 , H04L1/0637 , H04L1/0675
Abstract: 본 발명은 성능이 향상된 다중 안테나 시스템에 관한 것으로, 그 시스템은 시공간부호화 기법과 송신 안테나 선택 기법을 동시에 사용하는 시스템으로, 송신 장치 및 수신 장치를 포함한다. 송신 장치는 공간 채널로의 신호 전송에 사용되는 안테나의 수(M, M은 자연수)보다 많은 수(N, N은 M보다 큰 자연수)의 송신 안테나를 구비하고, 전송할 심볼을 시공간부호화 처리하여 상기 N개의 송신 안테나 중에서 특정의 상기 M개의 송신 안테나를 선택하여 공간 채널로 전송한다. 수신 장치는 공간 채널로부터의 신호 수신에 사용되는 M개의 수신 안테나를 구비하고, 상기 수신 안테나를 통해 수신된 신호를 사용하여 정보 심볼을 검출하는 동시에, 상기 수신된 신호로부터 추정된 채널 결과에 기초하여 상기 송신 장치의 N개의 송신 안테나 중에서 상기 M개의 송신 안테나를 선택하도록 하는 송신 안테나 선택 정보를 생성하여 상기 송신 장치로 귀환시켜 전달한다. 본 발명에 따르면, 시공간부호화기의 다이버시티 이득을 최적화하는 동시에 신호대 잡음비 이득을 크게 하여 시공간부호화기의 비트오차확률을 크게 개선시킬 수 있다.
다중 안테나 시스템, MIMO, 시공간부호화 기법, 송신 안테나 선택 기법-
公开(公告)号：KR1020070024310A
公开(公告)日：2007-03-02
申请号：KR1020060000924
申请日：2006-01-04
Applicant: 한국전자통신연구원 , 삼성전자주식회사 , 에스케이브로드밴드주식회사 , 에스케이텔레콤 주식회사 , 주식회사 케이티
IPC: H04B1/7097
Abstract: A receiving method and a module for canceling an interference in an OFDMA(Orthogonal Frequency Division Multiple Access) mobile communication system are provided to enhance a receiving performance of service base station signal by allowing a mobile terminal having single antenna to remove the interference from an adjacent base station in a cell boundary region. A receiving method for canceling an interference includes the steps of: receiving a sub carrier including data signals from a service base station, wherein an interference signal from an adjacent or remote base station is included in the data signals; estimating a channel response about the service base station and the adjacent base station by using more than one neighboring pilot sub carrier on a frequency axis or a time axis among the sub carrier; calculating a weight for removing an interference signal from the repeated data sub carriers by using the estimated channel response; and producing interference-removed data symbol by synthesizing more than one data sub carriers having a repeated same data symbol among the received sub carriers by using the weight.
Abstract translation: 提供了一种用于消除OFDMA（正交频分多址）移动通信系统中的干扰的接收方法和模块，用于通过允许具有单个天线的移动终端去除相邻干扰的干扰，来增强业务基站信号的接收性能 基站在小区边界区域。 一种用于消除干扰的接收方法包括以下步骤：从服务基站接收包括数据信号的子载波，其中来自相邻或远程基站的干扰信号包括在数据信号中; 通过在子载波中的频率轴或时间轴上使用多于一个的相邻导频子载波来估计关于服务基站和相邻基站的信道响应; 通过使用估计的信道响应来计算用于从重复的数据子载波中去除干扰信号的权重; 以及通过使用所述权重在所接收的子载波中合成具有重复的相同数据符号的多于一个的数据子载波来产生干扰消除的数据符号。
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公开(公告)号：KR1020060135155A
公开(公告)日：2006-12-29
申请号：KR1020050054863
申请日：2005-06-24
Applicant: 한국전자통신연구원 , 주식회사 케이티 , 에스케이브로드밴드주식회사 , 삼성전자주식회사 , 에스케이텔레콤 주식회사
CPC classification number: H04L1/0668 , H04B7/061 , H04B7/0634 , H04W52/42 , H04B7/02 , Y02D70/00
Abstract: A diversity transmission method for controlling power assignment of a transmission antenna in a mobile communication system and a base station transmitter are provided to receive feedback information including information of an antenna selected from a mobile terminal for signals transmitted to plural transmission antennas, increase a power assignment ratio of an antenna which is selected, decrease a power assignment ratio of an antenna which is not selected, and transmit the signals to the mobile terminal, thereby stably providing a diversity gain for reception performance improvement at a slow moving speed and a fast moving speed. A method for transmitting diversity for controlling power of a transmission antenna comprises the following steps of: receiving feedback information which includes information of the antenna with the best channel state from a mobile terminal(S330); increasing a power assignment ratio of the antenna selected by the feedback information as much as a certain quantity and decreasing the power assignment ratio of an antenna, which is not selected, as much as a certain quantity(S350,S360); and transmitting a signal to the mobile terminal by using power of which the assignment ratio is controlled(S370).
Abstract translation: 提供一种用于控制移动通信系统和基站发射机中的发送天线的功率分配的分集发送方法，用于接收包括从发送到多个发送天线的信号从移动终端选择的天线的信息的反馈信息，增加功率分配 所选择的天线的比率降低未选择的天线的功率分配比，并将该信号发送到移动终端，由此在慢的移动速度和快速移动速度下稳定地提供用于接收性能改善的分集增益 。 用于发送用于控制发送天线的功率的分集的方法包括以下步骤：从移动终端接收包括具有最佳信道状态的天线的信息的反馈信息（S330）; 通过反馈信息选择的天线的功率分配比例增加到一定量，并且降低未被选择的天线的功率分配比（S350，S360）; 以及通过使用控制分配比率的功率向移动终端发送信号（S370）。
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Patent Agency Ranking
公开(公告)号：KR100594949B1
公开(公告)日：2006-06-30
申请号：KR1020047005437
申请日：2002-10-21
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04B7/18543
Abstract: 본 발명은 위성 이동 통신 시스템에서 폐루프 전력제어 장치 및 그 방법에 관한 것으로, 루프 내 지연시간을 보상할 수 있다.
폐루프 전력제어를 위한 본 발명에 따른 장치는, 외부의 기지국으로부터 수신되는 전력제어 명령을 전력제어 폭으로 변환하기 위한 변환 수단; 파일럿 채널의 전력을 수신하여, 채널변화율을 측정하기 위한 측정수단; 상기 채널변화율을 이용하여, 탭계수를 생성하기 위한 생성 수단; 상기 전력제어 폭을 수신하여, 루프지연에 따른 채널 변화를 보상하기 위한 보상 수단; 및 상기 보상 수단으로부터 수신한 전력제어 폭을 이용하여 송신 전력을 갱신하기 위한 갱신 수단을 포함한다.
부호 분할 다중 접속, 이동 통신, 이동 위성 통신, 전력 제어, 루프 지연, 채널 예측-
公开(公告)号：KR1020030032894A
公开(公告)日：2003-04-26
申请号：KR1020020063942
申请日：2002-10-18
Applicant: 한국전자통신연구원
IPC: H04J13/10
CPC classification number: H04J13/10 , H04B1/70735 , H04B1/70756 , H04B7/2628 , H04J13/0014
Abstract: PURPOSE: A method for generating and detecting a synchronization code of a synchronous channel is provided to facilitate synchronization of a channel broadcast from a system by allowing a mobile station to receive a synchronization code before the system receives the broadcast channel. CONSTITUTION: A basic Golay code is generated. A configuration Golay code is generated. A first hierarchical Golay code is generated on the basis of the basic Golay code and the configuration Golay code.
Abstract translation: 目的：提供一种用于产生和检测同步信道的同步码的方法，以通过允许移动台在系统接收到广播信道之前接收同步码来促进来自系统的信道广播的同步。 构成：生成基本的Golay码。 生成配置Golay代码。 基于Golay的基本代码和Golay代码来生成第一个Golay代码。
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公开(公告)号：KR1020020030367A
公开(公告)日：2002-04-25
申请号：KR1020000060961
申请日：2000-10-17
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W74/006 , H04B7/18558 , H04W74/0833 , H04W84/06
Abstract: PURPOSE: A transmission method in a random access channel of a mobile communication system is provided to decrease a transmission delay time and enhance message receipt success probability in a mobile satellite communication system. CONSTITUTION: If a re-transmission period counter is less than the number of maximum re-transmission period(S505), an access process association parameter is updated as a recent value and a persistence check is performed(S507). A random number between 0 and 1 is generated(S508). If the generated value is larger than a persistence check probability(S509), a check is performed after waiting to a next frame(S510). If the generated value is less than or same to the persistence check probability, a power increase counter is initialized as 0(S511). The power increase counter is increased by 1(S512). If the power increase counter is less than the number of maximum power increase(S513), a possible signature is selected in a selected service class(S515) and a preamble and a message are transmitted(S516). A detection acknowledge signal corresponding to a signature used in the preamble through a preamble detection acknowledge channel while a detection acknowledge signal standby time elapses and a detection acknowledge signal receipt period elapses is received, and the received detection acknowledge signals are synthesized(S517,S518).
Abstract translation: 目的：提供移动通信系统的随机接入信道中的传输方法，以减少移动卫星通信系统中的传输延迟时间和增强消息接收成功概率。 构成：如果重传周期计数器小于最大重传周期数（S505），则将访问处理关联参数更新为最近的值，并执行持久性检查（S507）。 生成0到1之间的随机数（S508）。 如果生成值大于持久性检查概率（S509），则在等待下一帧之后进行检查（S510）。 如果生成值小于或等于持久性检查概率，则功率增加计数器被初始化为0（S511）。 功率增加计数器增加1（S512）。 如果功率增加计数器小于最大功率增加次数（S513），则在所选择的服务等级（S515）中选择可能的签名，并发送前导码和消息（S516）。 接收到检测确认信号，该检测确认信号通过前同步码检测确认信道在前同步码中使用的签名，而经过了检测确认信号待机时间并且检测到确认信号接收期间已经过去，并且接收到的检测确认信号被合成（S517，S518） 。
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公开(公告)号：KR1020020028663A
公开(公告)日：2002-04-17
申请号：KR1020000059780
申请日：2000-10-11
Applicant: 한국전자통신연구원
IPC: H04B7/15
CPC classification number: H04L1/0015 , H04B7/18513 , H04L1/0003 , H04L1/0009 , H04L1/0025 , H04L1/0066 , H04L1/20
Abstract: PURPOSE: A method for compensating rainfall attenuation using an adaptive transmission technique is provided to obtain an economical and maximal transmission efficiency by using an adaptive encoding/decoding method using block turbo codes and an adaptive modulation/demodulation method using an M-ary PSK method as an adaptive transmission method, estimating an SNR at the next time point after calculating an SNR(Signal-to-Noise Ratio) from a received PSK-modulated signal, and allocating a most suitable transmission method. CONSTITUTION: A control part calculates an SNR at the present time point from a received M-ary PSK-modulated signal(S401) and predicts the SNR of the next time point using the SNR values calculated at the present and past time points(S402). The control part determines a transmission method suitable for the next time point from the predicted SNR(S403). After comparing the determined method with the present method, the control part judges whether a transfer of transmission methods is required(S404). If necessary, the control part generates a transmission method transfer command(S405). Based on this command, a transmitting part transfers the present transmission method and transmits data(S406).
Abstract translation: 目的：提出一种使用自适应传输技术补偿降雨衰减的方法，通过使用块turbo码的自适应编码/解码方法和使用M-ary PSK方法的自适应调制/解调方法来获得经济和最大的传输效率 自适应传输方法，在从接收的PSK调制信号计算SNR（信噪比）之后估计下一个时间点的SNR，并分配最合适的传输方法。 构成：控制部从接收的M元PSK调制信号计算当前时间点的SNR（S401），并使用在当前时间和过去时间点计算的SNR值来预测下一个时间点的SNR（S402） 。 控制部分根据预测的SNR确定适合下一个时间点的传输方法（S403）。 在将确定的方法与本方法进行比较之后，控制部分判断是否需要传送方法（S404）。 如果需要，控制部生成发送方式传送命令（S405）。 基于该命令，发送部传送当前发送方式并发送数据（S406）。
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公开(公告)号：KR1020010063756A
公开(公告)日：2001-07-09
申请号：KR1019990061842
申请日：1999-12-24
Applicant: 한국전자통신연구원
IPC: H04B1/76
CPC classification number: H04B7/086 , H04B7/0862
Abstract: PURPOSE: A method for selecting a transmission method in an adaptive transmission system is provided to satisfy a specific bit error rate requested by a communication service according to an S/N(Signal to Noise) ratio, and to properly select a transmission method having a maximum transmission efficiency. CONSTITUTION: A system acquires a slope from an S/N(Signal to Noise) ratio for a present or a past receiving signal. According to the slope, the system calculates a cumulative pyramid which controls a cumulative weight(301,302). The system calculates each transmission efficiency according to the S/N ratio for the present receiving signal(303). The system uses the each transmission efficiency and the cumulative pyramid, and calculates each cumulated transmission efficiency(304). The system selects a transmission method having a maximum transmission efficiency, and decides whether the selected transmission method is a stable transmission method. According to a decided result, the system decides conversion into the selected transmission method(305-309).
Abstract translation: 目的：提供一种在自适应传输系统中选择传输方法的方法，以满足通信业务根据S / N（信噪比）比率请求的特定误码率，并适当地选择具有 最大传输效率。 构成：系统从当前或过去接收信号的S / N（信噪比）获得斜率。 根据斜率，系统计算控制累积权重的累积金字塔（301,302）。 系统根据当前接收信号的S / N比来计算每个传输效率（303）。 系统使用每个传输效率和累积金字塔，并计算每个累积传输效率（304）。 该系统选择具有最大传输效率的传输方法，并且决定所选择的传输方法是否是稳定的传输方法。 根据决定的结果，系统决定转换成选择的发送方式（305-309）。
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