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公开(公告)号：KR101074121B1
公开(公告)日：2011-10-17
申请号：KR1020080093359
申请日：2008-09-23
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W36/0011 , H04W80/04 , H04W84/06 , H04W84/12
Abstract: 본발명은모바일네트워크의이종망간핸드오버장치및 방법에관한것으로, 모바일라우터의현 위치정보에따라상기모바일라우터가속한망과상이한방식의망으로의핸드오버수행이필요한지여부를상기모바일라우터에기 저장된정보에기초하여판단하는핸드오버수행여부판단단계; 및상기판단결과에따라핸드오버를수행하는핸드오버수행단계;를포함하는것을특징으로하는모바일라우터에서수행되는이종망간핸드오버수행방법에의해고속으로이동하는모바일라우터에링크트리거및 위치기반의무선/위성망간핸드오버기술을이용함으로써, 이동성검출시간을단축할수 있어역사와같은위성음영구간에서도이동속도에무관하게서비스단절을방지할수 있는효과가도출된다.
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公开(公告)号：KR1020110057029A
公开(公告)日：2011-05-31
申请号：KR1020090113566
申请日：2009-11-23
Applicant: 한국전자통신연구원
IPC: H04B1/04
CPC classification number: H04B1/0458 , H03F3/38 , H04B2001/0408
Abstract: PURPOSE: An apparatus and method for transmitting data in a terminal of a satellite communication system are provided to enhance the efficiency of a transmitter of high power consumption in satellite communication. CONSTITUTION: A baseband signal processing unit(200) modulates data signals into IF(Intermediate Frequency) signals. After amplifying a synthesized signal, the baseband signal processing unit extracts only predetermined band. A transmission signal processing unit(230) extracts phase content and amplification content from the extracted signal. After amplifying divided amplitude content and amplitude-limited phase content, the transmission signal processing unit outputs the synthesized signal as the band signal for satellite transmission.
Abstract translation: 目的：提供一种用于在卫星通信系统的终端中发送数据的装置和方法，以提高卫星通信中高功率消耗的发射机的效率。 构成：基带信号处理单元（200）将数据信号调制成IF（中频）信号。 在放大合成信号之后，基带信号处理单元仅提取预定频带。 发送信号处理单元（230）从所提取的信号中提取相位内容和放大内容。 在扩展分频振幅内容和幅度限制相位内容之后，发送信号处理单元输出合成信号作为用于卫星传输的频带信号。
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公开(公告)号：KR1020110053603A
公开(公告)日：2011-05-24
申请号：KR1020090110192
申请日：2009-11-16
Applicant: 한국전자통신연구원
IPC: H03L7/08
CPC classification number: H03L7/185 , H03L7/099 , H03L2207/12
Abstract: PURPOSE: A phase locked loop and a satellite communication terminal using the same are provided to obtain low satellite noise characteristics in high and low frequency bands by reducing the phase noises of a satellite synchronization loop. CONSTITUTION: A voltage control oscillator(407) outputs a frequency variable depending on an output terminal, and a frequency down converter(409) down-converts the frequency outputted from a voltage control oscillator according to the frequency band outputted form voltage control oscillator. A frequency divider(411) divides the frequency down-converted in the frequency down-converting unit.
Abstract translation: 目的：提供一种锁相环和使用该锁相环的卫星通信终端，以通过减少卫星同步环路的相位噪声来获得高频和低频带中的低卫星噪声特性。 构成：电压控制振荡器（407）输出根据输出端子的频率变量，降频转换器（409）根据从压控振荡器输出的频带对从压控振荡器输出的频率进行下变频。 分频器（411）将降频转换单元中的下变频分频。
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公开(公告)号：KR1020100120094A
公开(公告)日：2010-11-12
申请号：KR1020100042010
申请日：2010-05-04
Applicant: 한국전자통신연구원
Inventor： 김판수 , 장대익 , 이호진 , 쵸니,스테파노 , 바넬리-코랄리,알렉산드로 , 꼬라짜,지오반니엠마누엘
CPC classification number: H04L1/0057 , H04B7/18528 , H04L1/0071 , H04L1/009 , H04L1/0625 , H04L27/2003
Abstract: PURPOSE: A method and an apparatus for transmitting/receiving data by using a satellite channel are provided to use low cost analog device in a terminal by providing excellent transmission performance under a weak communication environment. CONSTITUTION: When receiving bit data, the encoding unit performs channel encoding through an e-BCH(extend BCH) code. An interleaver(103) interleaves the encoded data through the encoding unit. A modulation unit(105) modulates interleaved data through a CPM(Continuous Phase Modulation) method which use 4 symbols, and a transmission unit(107) transmits the modulated data to a primary center.
Abstract translation: 目的：提供一种通过使用卫星信道发送/接收数据的方法和装置，通过在弱通信环境下提供优异的传输性能，在终端中使用低成本的模拟设备。 构成：当接收到位数据时，编码单元通过e-BCH（扩展BCH）码进行信道编码。 交织器（103）通过编码单元对编码数据进行交织。 调制单元（105）通过使用4个符号的CPM（Continuous Phase Modulation，连续相位调制）方法来调制交织数据，并且发送单元（107）将调制数据发送到主要中心。
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公开(公告)号：KR100976727B1
公开(公告)日：2010-08-19
申请号：KR1020080050768
申请日：2008-05-30
Applicant: 한국전자통신연구원 , 한양대학교 산학협력단
IPC: H04L27/18
CPC classification number: H04L27/3405
Abstract: 본 발명은 디지털 변조신호의 비트 매핑 장치 및 그 방법에 관한 것으로, 디지털 변조 방식의 성상도(constellation) 상에서 내부 링과 외부 링의 형태를 가지는 각 심벌에 정보 비트 매핑 시, 외부 링 내 정보 비트들을 반시계 방향으로 하나씩 쉬프트(shift)시켜 매핑함으로써, 송수신 증폭기에서 발생하는 비선형 채널 특성을 극복하여 비트 오류율을 감소시키기 위한, 디지털 변조신호의 비트 매핑 장치 및 그 방법을 제공하고자 한다.
이를 위하여, 본 발명은 디지털 변조신호의 비트 매핑 방법에 있어서, 내부 링과 외부 링의 형태를 가지는 성상도(constellation) 상에 각 비트들을 매핑하는 초기 매핑 단계; 및 상기 외부 링 내 비트들을 쉬프트(shift)시켜 비트를 최종 매핑하는 최종 매핑 단계를 포함한다.
4+12 APSK, 성상도, 비트 매핑, 쉬프트, 비선형 특성-
Patent Agency Ranking
公开(公告)号：KR1020100062853A
公开(公告)日：2010-06-10
申请号：KR1020090030889
申请日：2009-04-09
Applicant: 한국전자통신연구원
CPC classification number: H04B7/18541 , H04B7/0404 , H04L1/0078
Abstract: PURPOSE: A moving satellite transmission and reception apparatus and a communication route are provided to control a communication route for receiving a satellite signal received from different communication route without a disconnection phenomenon of a data. CONSTITUTION: A first antenna device(111) receives a signal through a first communications route. A second antenna device(112) receives the signal through a second communications route. A data processor(101) compares a cyclic redundancy check value about a packet stream of the signal received respectively the second antenna device and the first antenna device to the per packet. The data processor changes one communication route among the first communication route and the second communication route when the packet in which the CRC value is same is detected.
Abstract translation: 目的：提供移动的卫星发射和接收装置和通信路由，以控制用于接收从不同通信路由接收的卫星信号的通信路由，而不会出现数据的断开现象。 构成：第一天线装置（111）通过第一通信路由接收信号。 第二天线装置（112）通过第二通信路由接收信号。 数据处理器（101）将分别接收到的第二天线装置和第一天线装置的信号的分组流的循环冗余校验值与每个分组进行比较。 当检测到CRC值相同的分组时，数据处理器在第一通信路由和第二通信路由之间改变一个通信路由。
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公开(公告)号：KR1020100034304A
公开(公告)日：2010-04-01
申请号：KR1020080093359
申请日：2008-09-23
Applicant: 한국전자통신연구원
IPC: H04B7/26
CPC classification number: H04W36/0011 , H04W80/04 , H04W84/06 , H04W84/12 , H04W64/00
Abstract: PURPOSE: An apparatus and a method for performing handover between different networks using location information and a mobile router are provided to supply an internet service in which a session is not disconnected to a fixed node. CONSTITUTION: A handover starting information storage unit(320) stores handover execution location information. A handover execution determining unit(330) determines whether a mobile router needs handover execution into a network of a different type from a connection network based on information stored in the handover starting information storage unit according to current location information grasped in the location information grasping unit. A handover performing unit(340) performs handover according to the determination result.
Abstract translation: 目的：提供使用位置信息和移动路由器在不同网络之间执行切换的装置和方法，以提供其中会话未被断开到固定节点的因特网服务。 构成：切换起动信息存储部（320）存储切换执行位置信息。 切换执行确定单元（330）根据在位置信息获取单元中掌握的当前位置信息，基于存储在切换起始信息存储单元中的信息来确定移动路由器是否需要切换执行到与连接网络不同类型的网络 。 切换执行单元（340）根据确定结果执行切换。
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公开(公告)号：KR1020100034211A
公开(公告)日：2010-04-01
申请号：KR1020080093234
申请日：2008-09-23
Applicant: 한국전자통신연구원
IPC: H04N21/242 , H04N21/8547 , H04N21/238
CPC classification number: H04N21/4385 , H04N21/2383 , H04N21/2389 , H04N21/242 , H04N21/4382 , H04N21/8547
Abstract: PURPOSE: An apparatus and a method for transmitting variable length packet data and a device for receiving data are provided to transmit synchronization information in a satellite communication network environment to which a variable length packet transmission method is applied. CONSTITUTION: A data transmitter(10) inserts synchronization information to transmission data to be transmitted according to a variable length packet transmission method. The data transmitter transmits the transmission data into which the synchronization information is inserted to a data receiver. The data receiver(20) receives the transmission data including synchronization information from the data transmitter. The data receiver restores synchronization data included in the received transmission data. The data receiver synchronizes with the data transmitter according to the restored synchronization data.
Abstract translation: 目的：提供用于发送可变长度分组数据的装置和方法以及用于接收数据的装置，以在应用可变长度分组传输方法的卫星通信网络环境中发送同步信息。 构成：数据发送器（10）将同步信息插入到根据可变长度分组传输方法发送的发送数据。 数据发送器将同步信息插入其中的发送数据发送到数据接收机。 数据接收器（20）从数据发送器接收包括同步信息的发送数据。 数据接收器恢复接收到的发送数据中包含的同步数据。 数据接收器根据恢复的同步数据与数据发射机同步。
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公开(公告)号：KR1020100034210A
公开(公告)日：2010-04-01
申请号：KR1020080093233
申请日：2008-09-23
Applicant: 한국전자통신연구원
CPC classification number: H04N21/2381 , H04N21/238 , H04N21/242 , H04N21/4305 , H04N21/6143 , H04N21/6193 , H04L1/0006 , H04W4/18
Abstract: PURPOSE: An encapsulating method for transmission data in a digital satellite communication system and a data transmission apparatus are provided to perform bidirectional communication in a satellite communication network. CONSTITUTION: An encapsulating unit(120) partitions a packet data unit to be transmitted to form a baseband data packet of a fixed length into variable length packets. The encapsulating unit adds a header to a variable length packet and a reference time packet. The encapsulating unit encapsulates the added packet. A packet forming unit(130) schedules the encapsulated variable length packet and reference time packet. The packet forming unit forms a baseband data packet.
Abstract translation: 目的：提供一种数字卫星通信系统和数据发送装置中的发送数据的封装方法，用于在卫星通信网络中进行双向通信。 构成：封装单元（120）对要传输的分组数据单元进行分区以形成固定长度的基带数据分组成可变长度分组。 封装单元向可变长度分组和参考时间分组添加报头。 封装单元封装所添加的分组。 分组形成单元（130）调度封装的可变长度分组和参考时间分组。 分组形成单元形成基带数据分组。
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公开(公告)号：KR100950726B1
公开(公告)日：2010-03-31
申请号：KR1020080040770
申请日：2008-04-30
Applicant: 한국전자통신연구원
IPC: H04N7/20
Abstract: 본 발명은 통신 시스템에서의 채널 상태 검출 장치 및 그 방법에 관한 것으로, 튜너를 통해 입력되는 업 샘플링 신호를 다운 샘플링한 후 다운 샘플링 신호를 이용하여 채널 상태를 검출함으로써, 하드웨어의 복잡성 및 계산량의 증가를 감소시키기 위한, 통신 시스템에서의 채널 상태 검출 장치 및 그 방법을 제공하고자 한다.
이를 위하여, 본 발명은 통신 시스템에서의 채널 상태 검출 장치에 있어서, 튜너(Tunner)를 통해 입력되는 업 샘플링 신호를 필터링하기 위한 정합 필터링 수단; 상기 정합 필터링 수단에서 필터링한 업 샘플링 신호를 다운 샘플링하기 위한 다운 샘플링 수단; 및 상기 다운 샘플링 수단에서 다운 샘플링한 신호를 이용하여 채널 상태를 추정하기 위한 채널 상태 추정 수단을 포함한다.
채널 상태 추정, DVB-S2, 다운 샘플링 신호, 계산량 감소
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