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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-
公开(公告)号：KR1020090064919A
公开(公告)日：2009-06-22
申请号：KR1020070132297
申请日：2007-12-17
Abstract: An apparatus and a method for controlling a gain of a burst signal in an interactive communication system are provided to enable a relay located in a dead zone to adjust a gain of a burst signal through pilot signals detected from a terminal located in a mobile body, thereby preventing deterioration of performance due to signal attenuation inside a tunnel. A transmitting unit(301) produces a burst signal about transmitting data. A pilot generating unit(302) produces a plurality of pilot signals located in the outside of a use frequency band of a mobile terminal. A multiplexing unit(303) multiplexes the burst signal and the pilot signal. The multiplexing unit transmits the multiplexed signals to the relay.
Abstract translation: 提供了一种用于控制交互式通信系统中的突发信号的增益的装置和方法，以使位于死区中的中继器能够通过从位于移动体中的终端检测到的导频信号来调整突发信号的增益， 从而防止由隧道内的信号衰减引起的性能劣化。 发送单元（301）产生关于发送数据的突发信号。 导频生成部（302）生成位于移动终端的使用频带外侧的多个导频信号。 复用单元（303）对突发信号和导频信号进行复用。 复用单元将多路复用信号发送到继电器。
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公开(公告)号：KR1020090063380A
公开(公告)日：2009-06-18
申请号：KR1020070130715
申请日：2007-12-14
Applicant: 한국전자통신연구원
Abstract: A handover method between heterogeneous network for preventing the disconnection of a session and packet loss is provided to control the handover between wireless network and satellite network by link up/down trigger signal. A mobile node positioned in a first network maintains a second network-connection interface in a sleep state(606). A first network service is supplied by activating a first network-connection interface(607). The second network linkup trigger signal is sensed as the mobile node moves to the second network side. The second network-connection interface is converted into the active state and the handover is performed. The mobile node performing handover receives the second network service through the activated second network-connection interface.
Abstract translation: 提供用于防止会话断开和分组丢失的异构网络之间的切换方法，以通过链接上/下触发信号来控制无线网络和卫星网络之间的切换。 位于第一网络中的移动节点维持处于睡眠状态的第二网络连接接口（606）。 通过激活第一网络连接接口（607）来提供第一网络服务。 当移动节点移动到第二网络侧时，感测到第二网络链接触发信号。 第二网络连接接口被转换为活动状态，并进行切换。 执行切换的移动节点通过激活的第二网络连接接口接收第二网络服务。
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公开(公告)号：KR1020090063048A
公开(公告)日：2009-06-17
申请号：KR1020080025903
申请日：2008-03-20
Applicant: 한국전자통신연구원 , 서강대학교산학협력단
Abstract: An apparatus and a method for selecting a correlation mode based on a frequency error of a carrier are provided to obtain initial synchronization by selecting the correlation mode according to the corresponding region after calculating a frequency error boundary point between correlation modes. Non-detection probability values are calculated according to a frequency offset normalized in each correlation method(201). A point meeting graphs of non-detection probability values is determined to a frequency error boundary point(202). A correlation mode is selected based on the determined frequency error boundary point(203).
Abstract translation: 提供一种用于基于载波的频率误差来选择相关模式的装置和方法，以通过在相关模式之后计算频率误差边界点之后根据相应区域选择相关模式来获得初始同步。 根据在每个相关方法（201）中归一化的频率偏移来计算非检测概率值。 满足非检测概率值的图的点被确定为频率误差边界点（202）。 基于确定的频率误差边界点（203）选择相关模式。
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Patent Agency Ranking
公开(公告)号：KR100900958B1
公开(公告)日：2009-06-08
申请号：KR1020070130714
申请日：2007-12-14
Applicant: 한국전자통신연구원
CPC classification number: H04J4/005 , H04B7/18513 , H04B7/212
Abstract: An apparatus and method for multiplexing channel data for supporting variable transmission rate are provided to implement efficiently demodulator and support various transmission rates. The channel data multiplexer(20) comprises a controller(200), an input terminal dual-port block memory(DPBM: Dual Port Block Memory)(201), and an output terminal DPBM(202) and multiplexers(203, 204). The controller controls data read and write of the input terminal and output terminal according to the transmission mode. The controller controls the address processing and clock speed about data output of the first multiplexer. Multi-channel base zone data is input to the input terminal DPBM. The input terminal DPBM stores base zone data of all channels for one time slot. The output terminal DPBM temporarily stores data stored in the input terminal. The multiplexer of the output terminal time-multiplexes data stored in the output terminal and send it to the demodulator(21).
Abstract translation: 提供用于多路复用用于支持可变传输速率的信道数据的装置和方法，以有效地解调并支持各种传输速率。 信道数据多路复用器（20）包括控制器（200），输入终端双端口块存储器（DPBM：双端口块存储器）（201）和输出端子DPBM（202）和多路复用器（203,204）。 控制器根据传输模式控制输入端子和输出端子的数据读取和写入。 控制器控制关于第一多路复用器的数据输出的地址处理和时钟速度。 多通道基区数据输入到输入端子DPBM。 输入端子DPBM存储一个时隙的所有通道的基区数据。 输出端子DPBM临时存储输入端子中存储的数据。 输出端子的多路复用器对存储在输出端子中的数据进行时间复用并将其发送到解调器（21）。
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公开(公告)号：KR100895688B1
公开(公告)日：2009-04-30
申请号：KR1020070132299
申请日：2007-12-17
Applicant: 한국전자통신연구원
CPC classification number: H04L12/66 , H04W36/0016 , H04W36/14 , H04W40/36 , H04W80/04 , H04W84/005 , H04W8/02 , H04W48/18
Abstract: A handover method between heterogeneous networks using a link trigger signal in a mobile router having a multi-interface is provided to prevent the loss of packets and the disconnection of a session regardless of the moving speed of the mobile router which is within a rapid transit railway. While a mobile router positioned in the first network maintains the second network connection interface in the dormant state, it activates the first network connection interface(606). The first network service which the mobile router receives is delivered to a corresponding lower node(607). As the mobile router moves to the second network, if the second network link-up trigger signal is detected, the handover is performed since the second network connection interface is activated(608,609).
Abstract translation: 提供了在具有多接口的移动路由器中使用链路触发信号的异构网络之间的切换方法，以防止分组的丢失和会话断开，而不管移动路由器在快速中转铁路内的移动速度 。 当定位在第一网络中的移动路由器将第二网络连接接口维持在休眠状态时，它激活第一网络连接接口（606）。 移动路由器接收的第一网络服务被递送到相应的下层节点（607）。 当移动路由器移动到第二网络时，如果检测到第二网络链接触发信号，则在第二网络连接接口被激活之后进行切换（608,609）。
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公开(公告)号：KR1020080052352A
公开(公告)日：2008-06-11
申请号：KR1020070101830
申请日：2007-10-10
Applicant: 한국전자통신연구원
IPC: H04L27/04
CPC classification number: H04L1/0009 , H03M13/09 , H03M13/2714 , H03M13/2957 , H03M13/353 , H03M13/6356 , H03M13/6362 , H04L1/0003 , H04L1/0066
Abstract: An adaptive coding modulation system for an effective signal transmission/reception in a satellite communication system, and a method thereof are provided to maintain synchronization and perform efficient transmission by having a physical layer frame of a predetermined length irrespective of a modulation scheme. An adaptive coding modulation system for an effective signal transmission/reception in a satellite communication system includes a mode adaptive unit(101), a stream adaptive unit(102), a turbo coding unit(103), a mapping unit(104), a physical layer framing unit(105), and a modulation unit(106). The mode adaptive unit receives an input stream, and performs input stream synchronization, a null-packet removal, and a coding for error detection. The stream adaptive unit performs a padding and base-band scramble and forms a base-band frame. The turbo coding unit forms a forward error correction frame by applying a turbo coding to the base-band frame. The mapping unit determines a bit mapping based on a state of a transmission channel. The physical layer framing unit forms a physical layer frame by inserting a header and a pilot symbol into the forward error correction frame. The modulation unit performs a modulation for the physical layer frame to transmit the physical layer frame.
Abstract translation: 提供了一种用于卫星通信系统中的有效信号发送/接收的自适应编码调制系统及其方法，用于通过具有预定长度的物理层帧来保持同步并且执行有效的发送，而与调制方案无关。 一种用于卫星通信系统中的有效信号发送/接收的自适应编码调制系统，包括模式自适应单元（101），流自适应单元（102），turbo编码单元（103），映射单元（104）， 物理层成帧单元（105）和调制单元（106）。 模式自适应单元接收输入流，并执行输入流同步，零分组去除和用于错误检测的编码。 流自适应单元执行填充和基带扰频并形成基带帧。 turbo编码单元通过对基带帧应用turbo编码来形成前向纠错帧。 映射单元基于传输信道的状态来确定位映射。 物理层成帧单元通过将头部和导频符号插入前向纠错帧来形成物理层帧。 调制单元对物理层帧进行调制以发送物理层帧。
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公开(公告)号：KR1020080052201A
公开(公告)日：2008-06-11
申请号：KR1020070048615
申请日：2007-05-18
Applicant: 한국전자통신연구원 , 에스케이텔레콤 주식회사
CPC classification number: H04L27/20 , H03M13/235 , H03M13/27 , H04H2201/11 , H04N21/4382 , H04Q2213/13294
Abstract: A hierarchical modulation and demodulation method for a digital broadcasting system and an apparatus therefor are provided to enhance transmission efficiency through hierarchical modulation in a currently operated system. An RS(Reed-Solomon) coder(602) encodes the first broadcasting signal. A byte interleaver(605) interleaves the encoded first broadcasting signal. A convolution coder(607) encodes the interleaved first broadcasting signal again. A bit interleaver(609) interleaves the encoded first broadcasting signal. A second coder(617) encodes the second broadcasting signal. A second bit interleaver interleaves the encoded second broadcasting signal. A CDM(Code Division Multiplexing) multiplexer(611) multiplexes the first broadcasting signal and the second broadcasting signal outputted from the first bit interleaver and the second bit interleaver. A hierarchical modulator(613) hierarchically modulate the modulated signal by an 8PSK(8 Phase Shift Keying) type.
Abstract translation: 提供了一种用于数字广播系统及其装置的分级调制和解调方法，以通过当前操作的系统中的分级调制来提高传输效率。 RS（里德 - 所罗门）编码器（602）对第一广播信号进行编码。 字节交织器（605）对编码的第一广播信号进行交织。 卷积编码器（607）再次对交错的第一广播信号进行编码。 比特交织器（609）对编码的第一广播信号进行交织。 第二编码器（617）对第二广播信号进行编码。 第二位交织器交织编码的第二广播信号。 CDM（码分复用）复用器（611）复用从第一位交织器和第二位交织器输出的第一广播信号和第二广播信号。 分级调制器（613）通过8PSK（8相移键控）类型对调制信号进行分层调制。
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80.发明授权양방향 위성통신 시스템에서 비캡슐화 데이터 통신을 위한 적응형 패킷 스케줄링 장치 및 수신 장치와, 송신 방법 및 수신 방법 有权交互式卫星通信系统中未封装的IP分组数据通信的自适应分组调度装置，以及使用它的数据接收装置和发送和接收方法
公开(公告)号：KR100797388B1
公开(公告)日：2008-01-28
申请号：KR1020060069951
申请日：2006-07-25
Applicant: 한국전자통신연구원
Abstract: 본 발명은 양방향 위성 송수신 시스템에서 IP 패킷을 캡슐화하지 않고 직접 전송하고, 단말국에서 이러한 데이터를 정상적으로 수신하도록 하기 위한 적응형 패킷 스케줄링 장치 및 수신 장치와, 송신 방법 및 수신 방법에 관한 것으로, 양방향 위성통신 시스템에서 통신 데이터(IP 패킷)를 비캡슐화하여 전송하기 위한 적응형 패킷 스케줄링 장치에 있어서, 입력된 IP 패킷을 분류하여 복수의 데이터 큐에 저장하는 분류수단; 상기 데이터 큐에 저장된 상기 IP 패킷의 스케줄링을 수행하고, 결정된 전송방식에 따른 베이스밴드 프레임 길이 단위로 상기 IP 패킷을 잘라 출력하는 스케줄러 및 프레이밍수단; 및 각 단말국에 연결된 모든 사용자 단말에 대한 IP 주소를 상기 각 단말국으로부터 획득하여 관리하고, 상기 입력된 IP 패킷의 목적지 주소 및 상기 각 단말국의 채널 수신 상태 정보에 따라 상기 분류수단 및 상기 스케줄러 및 프레이밍 수단을 제어하는 제어정보 관리수단을 포함하되, 상기 분류수단은, 전송방식별로 구분된 데이터 큐에 상기 제어정보 관리수단으로부터 전달된 IP 주소에 따른 전송방식에 따라 상기 입력된 IP 패킷을 구분하여 저장하고, 상기 스케줄러 및 프레이밍수단은 베이스밴드 프레임 길이 단위로 상기 IP 패킷을 읽어 순방향링크 변조기로 출력하여 상기 IP 패킷이 전송스트림으로 캡슐화되지 않고 베이스밴드 프레임 길이 단위의 연속된 IP 패킷 스트림으로 전송되도록 한다.
위성, 적응형 패킷 스케줄러, 중심국, 단말국, 순방향링크, 역방향링크, 트래픽, IP 패킷
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