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公开(公告)号：KR1020110037683A
公开(公告)日：2011-04-13
申请号：KR1020090095223
申请日：2009-10-07
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A system and method for providing driving safety are provided to prevent a rear end collision of a vehicle. CONSTITUTION: A radar(202) transmits signals which belong to a fixed frequency band to vehicles, analyzes signals received from the vehicles, calculates the location and distance information of the vehicles, and obtains information about the distances among the vehicles based on the location and distance information. A controller(206) receives driving speed information from a vehicle information terminal device, and determines whether the vehicle drive safely based on driving speed information and the information about the distances among the vehicles to transmit a safety warning message for driving safety to the vehicle information terminal device.
Abstract translation: 目的：提供一种用于提供驾驶安全的系统和方法，以防止车辆的后端碰撞。 构成：雷达（202）将属于固定频带的信号发送到车辆，分析从车辆接收到的信号，计算车辆的位置和距离信息，并根据位置和位置获得关于车辆之间的距离的信息， 距离信息。 控制器（206）从车辆信息终端装置接收行驶速度信息，根据驾驶速度信息和关于车辆之间的距离的信息来安全地驾驶车辆，以将安全性的安全警告信息发送给车辆信息 终端设备。
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公开(公告)号：KR1020090057862A
公开(公告)日：2009-06-08
申请号：KR1020080020670
申请日：2008-03-05
Applicant: 한국전자통신연구원
CPC classification number: H04L27/06 , H04L27/2666 , H04L27/2695
Abstract: A method and an apparatus for estimating a channel in a wireless communication system are provided to correct the distortion of a size and a phase by estimating the channel by a mid-amble and performing the channel equalization when the predetermined symbol passes through the cannel. An initial channel estimating value is generated by using the preamble extracted from a receiving signal(S102). Whether a mid-amble is between data symbols continuously in a preamble is determined(S104). If the mid-amble exists, a first channel estimating value is obtained by using the mid-amble(S105). A second channel estimating value is obtained by using the first channel estimating value and the initial channel estimating value(S106). The distortion is corrected by performing the channel equalization by the second channel estimating value(S107).
Abstract translation: 提供了一种用于估计无线通信系统中的信道的方法和装置，用于通过中间码估计信道来校正大小和相位的失真，并且当预定码元通过信道时执行信道均衡。 通过使用从接收信号提取的前导码来生成初始信道估计值（S102）。 确定在前同步码中连续地在数据符号之间是否存在中间码头（S104）。 如果存在中间位置，则通过使用中间码来获得第一信道估计值（S105）。 通过使用第一信道估计值和初始信道估计值来获得第二信道估计值（S106）。 通过第二信道估计值执行信道均衡来校正失真（S107）。
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公开(公告)号：KR100748093B1
公开(公告)日：2007-08-09
申请号：KR1020060062705
申请日：2006-07-04
Applicant: 한국전자통신연구원
Abstract: 본 발명은, 다수의 광종단장치(ONU)로부터 서로 다른 광 파워 레벨의 버스트 데이터를 수신하여 레벨 복구 및 상기 버스트 데이터의 광 신호를 전기 신호로 변환하는 광 모듈과, 상기 버스트 데이터의 동기 시간을 줄이기 위한 다중점 제어 프로토콜 로스 신호를 생성하여 발생하는 접속 제어부와, 상기 다중점 제어 프로토콜 로스 신호가 발생하는 경우 동기 시간을 단축하고, 상기 다중점 제어 프로토콜 로스 신호가 발생하지 않는 구간에서 코드 그룹을 정렬하여 상기 수신된 버스트 데이터를 복구하는 서데스부를 포함하여 이더넷 수동형 광가입자망에서의 버스트 데이터의 수신 처리를 함으로써, 실제 광 신호와 같은 빠른 동작 특성으로 동기 시간 즉, 수신 복구 시간을 줄 일 수 있으므로 상향 대역의 효율 및 버스트 데이터 수신 성능을 개선할 수 있는 효과가 있다.
EPON, OLT, ONU, MPCP LOS, MPCP RESET, 버스트 데이터, CDR, 디스커버리, 광 모듈, 서데스 칩, OLT MAC.-
公开(公告)号：KR1020070061200A
公开(公告)日：2007-06-13
申请号：KR1020060062705
申请日：2006-07-04
Applicant: 한국전자통신연구원
CPC classification number: H04L47/15 , H04L12/2885
Abstract: A method and an apparatus for receiving and processing burst data in an EPON(Ethernet Passive Optical Network) are provided to receive and process burst data through shortening of a reception recovery time(synchronization time) by including a SerDes(Serialization and Deserialization) chip that applies a LOS signal generated in an MPCP(Multi-Point Control Protocol) in an OLT(Optical Line Terminal). An optical module receives burst data each having a different optical power level from a plurality of ONUs(Optical Network Units), performs level recovery, and converts optical signals of the burst data into electrical signals. A connection controller(130) generates an MPCP LOS signal for reducing a synchronization time of the burst data. When the MPCP LOS signal is generated, a SerDes unit(120) shortens the synchronization time and aligns a code group at an interval where the MPCP LOS signal is not generated in order to recover the received burst data.
Abstract translation: 提供了一种在EPON（以太网无源光网络）中接收和处理突发数据的方法和装置，用于通过包括SerDes（序列化和解串化）芯片来缩短接收恢复时间（同步时间）来接收和处理突发数据，该SerDes 在OLT（光线路终端）中应用在MPCP（多点控制协议）中生成的LOS信号。 光模块从多个ONU（光网络单元）接收具有不同光功率电平的突发数据，执行电平恢复，并将突发数据的光信号转换为电信号。 连接控制器（130）产生用于减少突发数据的同步时间的MPCP LOS信号。 当生成MPCP LOS信号时，SerDes单元（120）缩短同步时间，并且以不产生MPCP LOS信号的间隔对准码组，以恢复所接收的突发数据。
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公开(公告)号：KR100542402B1
公开(公告)日：2006-01-11
申请号：KR1020020064905
申请日：2002-10-23
Applicant: 한국전자통신연구원
IPC: H04L12/28
Abstract: 본 발명은 이더넷-폰(Ethernet-Passive Optical Network;이하, E-PON이라 한다) 구조에서 ONU의 상향 Request 정보를 상향 이더넷 프레임의 프리엠블(Preamble)에 추가하여 OLT로 전송함으로써 OLT가 계속적으로 ONU의 상태정보를 알 수 있도록 하는 E-PON 구조에서의 ONU Request 전송방법에 관한 것이다. 본 발명은, 하나의 OLT에 다수의 ONU가 하향 이더넷 프레임을 공유하고 상기 ONU에서 상기 OLT로의 상향 대역폭은 시분할 다중접속(TDMA) 방식으로 OLT가 상기 ONU에게 할당하는 이더넷-폰(E-PON) 구조에서의 ONU Request 전송방법에 있어서, ONU는 OLT로 전달하는 상향 이더넷 데이터 프레임의 프리엠블에 상기 ONU의 상향 Request 정보를 삽입하여 상기 OLT로 전송하고 상기 OLT가 상기 전송되는 상향 이더넷 데이터 프레임의 프리엠블로부터 각 ONU의 Request 정보를 추출하는 것을 특징으로 한다.
E-PON, ONU, OLT, Request(대역 요구), 이더넷 프레임, 프리엠블-
Patent Agency Ranking
公开(公告)号：KR1020040084621A
公开(公告)日：2004-10-06
申请号：KR1020030019822
申请日：2003-03-29
Applicant: 한국전자통신연구원 , 학교법인 한국정보통신학원
IPC: H04L25/03
CPC classification number: H04B10/695
Abstract: PURPOSE: A burst-mode optical receiver is provided to remove an offset from an amplifier by converting a single-end output to a differential output. CONSTITUTION: A photo detector(41) is used for converting an inputted optical signal to a current signal. A pre-amplifier(42) is used for converting the current signal to a voltage signal. A single-differential converter(43) is used for converting a single output signal of the pre-amplifier to a differential signal. A post amplifier(44) is used for amplifying the differential signal of the single-differential converter and remove an offset from an amplifying process and an offset from the differential signal. A determination unit(45) is used for deciding data from the differential signal of the post amplifier.
Abstract translation: 目的：提供突发模式光接收机，通过将单端输出转换为差分输出来消除放大器的偏移。 构成：光检测器（41）用于将输入的光信号转换为电流信号。 前置放大器（42）用于将电流信号转换为电压信号。 单差分转换器（43）用于将前置放大器的单个输出信号转换为差分信号。 后置放大器（44）用于放大单差分转换器的差分信号，并从放大过程中消除偏移和从差分信号偏移。 确定单元（45）用于根据后置放大器的差分信号来确定数据。
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公开(公告)号：KR1020040057027A
公开(公告)日：2004-07-01
申请号：KR1020030009750
申请日：2003-02-17
Applicant: 한국전자통신연구원
IPC: H04L12/00
CPC classification number: H04B10/40 , H04B10/2504
Abstract: PURPOSE: An ONU(Optical Network Unit) in an E-PON(Ethernet-Passive Optical Network) and a method for transmitting data therein are provided to shorten clock recovery time in a network-side OLT(Optical Line Terminal) by transmitting a signal pattern of 1010101010 or 0101010101,= in which 0 and 1 appear alternately, as a start signal pattern for clock recovery in the network-side OLT. CONSTITUTION: A transmitting part(230) in an ONU(200) comprises a state control part(231) and an encoder(232). If a GMII(Gigabit Ethernet Media Independent Interface) signal(TXD£7:0|), a GMII Tx enable signal(TX_EN), a GMII Tx error signal(TX_ER), and a GMII Tx clock(GTX_CLK) are received from a medium access control part(210) and an Xmit signal is received from an AN(Auto-Negotiation) part(220), the state control part(231) creates a set of code groups having control information according to the received signals and sends 8-bit parallel data, based on the created set. The encoder(232) converts the 8-bit parallel data into 10-bit code group data.
Abstract translation: 目的：提供E-PON（以太网无源光网络）中的ONU（Optical Network Unit，光网络单元）及其中的数据传输方法，通过发送信号来缩短网络侧OLT（Optical Line Terminal，光线路终端）的时钟恢复时间 1010101010或0101010101的模式，其中0和1交替出现，作为网络侧OLT中的时钟恢复的起始信号模式。 构成：ONU（200）中的发送部（230）包括状态控制部（231）和编码器（232）。 如果接收到GMII（千兆以太网媒体独立接口）信号（TXD£7：0 |），GMII Tx使能信号（TX_EN），GMII Tx错误信号（TX_ER）和GMII Tx时钟（GTX_CLK） 媒体接入控制部分（210）和从AN（自动协商）部分（220）接收到Xmit信号，状态控制部分（231）根据接收到的信号创建一组具有控制信息的码组，并发送8 并行数据，基于创建的集合。 编码器（232）将8位并行数据转换为10位代码组数据。
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公开(公告)号：KR1020040036101A
公开(公告)日：2004-04-30
申请号：KR1020020064905
申请日：2002-10-23
Applicant: 한국전자통신연구원
IPC: H04L12/28
CPC classification number: H04J14/0247 , H04J14/0282 , H04Q11/0066 , H04Q11/0067 , H04Q2011/0088
Abstract: PURPOSE: An ONU(Optical Network Unit) request transmission method in an Ethernet-phone structure is provided to be continuously informed on status of an ONU from an uplink data frame by adding uplink request information of the ONU to the preamble of an Ethernet frame. CONSTITUTION: A MAC layer(21) has a MAC control function of IEEE802.3 and additionally includes an MPCP(Multi-Protocol Control Protocol), a transmission control function of an E-PON(Ethernet-Passive Optical Network). An RS(Reconciliation Sublayer)(23) performs a P2PE(Point-to-Point Emulation) function and an OAM(Operation and Management) function for allowing ONUs belonging to an OLT(Optical Line Terminal) domain to communication with each other, and an information insertion/extraction function of the ONU. The ONU performs a frame filtering function using a physical ID and a MAC preamble recovery function. The physical ID is assigned by an Ethernet PON OLT. An RS(26) compares a physical ID of a preamble of a frame received from an OLT and its own physical ID, and sends it to an upper layer(25) or discards it according to a mode of the received frame. When the ONU receives grant for transmission from the OLT, it indicates its request information in a preamble of a subscriber Ethernet frame to be transmitted to the OLT and transmits it. the OLT collects request information of each ONU from the preambles of Ethernet frames and transmits it to a MAC control layer(24).
Abstract translation: 目的：提供以太网电话结构中的ONU（Optical Network Unit，光网络单元）请求传输方法，通过将ONU的上行链路请求信息加到以太网帧的前导码，从上行链路数据帧连续通知ONU的状态。 构成：MAC层（21）具有IEEE802.3的MAC控制功能，并且还包括MPCP（多协议控制协议），E-PON（以太网无源光网络）的传输控制功能。 RS（调和子层）（23）执行用于允许属于OLT（光线路终端）域的ONU彼此通信的P2PE（点对点仿真）功能和OAM（操作和管理）功能，以及 ONU的信息插入/提取功能。 ONU使用物理ID和MAC前导码恢复功能来执行帧过滤功能。 物理ID由以太网PON OLT分配。 RS（26）比较从OLT接收到的帧的前同步码的物理ID与其自己的物理ID，并将其发送到上层（25）或根据接收到的帧的模式丢弃。 当ONU从OLT接收到用于从OLT发送的许可时，它将其请求信息指示在要发送到OLT的用户以太网帧的前导码中并将其发送。 OLT从以太网帧的前导码中收集每个ONU的请求信息，并将其发送到MAC控制层（24）。
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