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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-
公开(公告)号：KR1020050061263A
公开(公告)日：2005-06-22
申请号：KR1020040033067
申请日：2004-05-11
Applicant: 한국전자통신연구원
IPC: H04L12/28
Abstract: PON 시스템에서 우선순위를 갖는 가입자 장치에 대한 서비스 제공 방법 및 PON 시스템이 개시된다. PON의 가입자 장치들에게 우선순위를 부여하고, 가입자 장치들로부터 데이터 전송을 위한 대역 할당을 요구하는 예약 요구 메시지를 수신한다. 수신한 각각의 예약 요구 메시지를 예약 요구 메시지를 전송한 가입자 장치의 우선순위에 대응하여 우선 순위별로 구비된 각각의 큐에 저장한 후 큐들 중 우선순위가 높은 큐에 저장된 예약 요구 메시지부터 우선순위가 낮은 큐에 저장된 예약 요구 메시지의 순으로 서비스를 제공한다. 이로써, 특정 가입자 장치에게 우선순위를 부여하여 차별화된 가입자 서비스 정책을 수행할 수 있다.
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公开(公告)号：KR100462477B1
公开(公告)日：2004-12-17
申请号：KR1020020078147
申请日：2002-12-10
Applicant: 한국전자통신연구원
CPC classification number: H04Q11/0067 , H04Q11/0066 , H04Q2011/0064
Abstract: A MAC master apparatus for executing a multi-point control protocol (MPCP) data in an optical line termination (OLT) of an Ethernet passive optical network (PON) is provided. The MPCP master apparatus includes a CPU interface unit, two or more memory arbitration control units, a SGA table memory, a RTT table memory, a static grant generation unit, a dynamic grant generation unit, a static grant queue, a dynamic grant queue, a sending message queue, a sending multiplexing unit, a time setting unit, a receiving window generation unit, an upstream grant queue, a received demultiplexing unit, a report queue and a received message queue. Therefore, any frame, including MPCP frames from/to the CPU can be sent or received, and a grant can be allocated statically according to a setting or dynamically according to a report from the ONUs.
Abstract translation: 提供了用于在以太网无源光网络（PON）的光线路终端（OLT）中执行多点控制协议（MPCP）数据的MAC主设备。 MPCP主设备包括CPU接口单元，两个或更多个存储仲裁控制单元，SGA表存储器，RTT表存储器，静态授权生成单元，动态授权生成单元，静态授权队列，动态授权队列， 发送消息队列，发送复用单元，时间设置单元，接收窗口生成单元，上行授权队列，接收解复用单元，报告队列和接收消息队列。 因此，可以发送或接收包括来自/去往CPU的MPCP帧的任何帧，并且可以根据设置静态分配授权或根据来自ONU的报告动态分配授权。
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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：KR100450771B1
公开(公告)日：2004-10-01
申请号：KR1020020067964
申请日：2002-11-04
Applicant: 한국전자통신연구원
IPC: H04L12/413
CPC classification number: H04Q11/0067 , H04Q11/0066 , H04Q2011/0064 , H04Q2011/0084
Abstract: A method of controlling data transmission in an Ethernet passive optical network (EPON) and an apparatus thereof are provided. Transmission permission messages using a mode of bandwidth allocation are queued in a queuing unit according to the types of the transmission permission messages. A transmission time duration of upstream data is defined for each of the transmission permission messages queued in the queuing unit. A bandwidth allocation unit generates transmission permission messages to allocate upstream data transmission bandwidth for an optical network unit (ONU), based on the transmission permission messages stored in the storage unit. A scheduler designates the predetermined priority, reads transmission permission messages from queues according to a predetermined priority, determines a transmission start time of upstream data, and outputs the transmission permission messages.
Abstract translation: 提供了一种在以太网无源光网络（EPON）中控制数据传输的方法及其装置。 根据传输许可消息的类型，使用带宽分配模式的传输许可消息在排队单元中排队。 为排队单元中排队的每个传输许可消息定义上游数据的传输时间周期。 带宽分配单元基于存储在存储单元中的传输许可消息，生成传输许可消息以为光网络单元（ONU）分配上行数据传输带宽。 调度器指定预定优先级，根据预定优先级从队列中读取传输许可消息，确定上游数据的传输开始时间，并输出传输许可消息。
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Patent Agency Ranking
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：KR1020040050338A
公开(公告)日：2004-06-16
申请号：KR1020020078148
申请日：2002-12-10
Applicant: 한국전자통신연구원
Abstract: PURPOSE: A method for transceiving a variable-length packet is provided to enable a transmission circuit to know length of a packet to be transmitted before transmitting packet data, and to enable a CPU to know the length of the packet before reading the packet data, thereby easily programming software for realizing a variable-length packet transceiving function. CONSTITUTION: If an outer CPU tries to transmit a variable length packet, the CPU transmits the packet to a transmission data FIFO, so that the transmission data FIFO can store the packet(S210). The transmission data FIFO stores length information of the received packet in a transmission size FIFO(S220). As soon as size information is written in the transmission size FIFO, a transmission packet counter storage increases a transmission packet counter by 1, and informs a transmission circuit that the one packet is written(S230). The transmission circuit firstly reads the length information of the packet from the transmission size FIFO, and reads the substantial packet from the transmission data FIFO (S240). The transmission packet counter storage monitors a read signal, and decreases the transmission packet counter by 1 after reading the one packet(S250).
Abstract translation: 目的：提供一种用于收发可变长度分组的方法，以使发送电路能够在发送分组数据之前知道要发送的分组的长度，并且使CPU能够在读取分组数据之前知道分组的长度， 从而易于编程用于实现可变长度分组收发功能的软件。 构成：如果外部CPU尝试发送可变长度数据包，则CPU将数据包发送到传输数据FIFO，以便传输数据FIFO可以存储数据包（S210）。 发送数据FIFO将接收到的分组的长度信息存储在发送大小FIFO中（S220）。 一旦大小信息被写入传输大小FIFO，传输分组计数器存储器将传输分组计数器增加1，并且向传输电路通知一个分组被写入（S230）。 传输电路首先从传输大小FIFO读取分组的长度信息，并从传输数据FIFO读取实质分组（S240）。 发送分组计数器存储器监视读取信号，并且在读取一个分组之后将发送分组计数器减1（S250）。
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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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公开(公告)号：KR1020040006635A
公开(公告)日：2004-01-24
申请号：KR1020020040968
申请日：2002-07-13
Applicant: 한국전자통신연구원
IPC: H04L12/28
CPC classification number: H04L12/5601 , H04L12/2801 , H04L2012/5605 , H04L2012/561
Abstract: PURPOSE: An ATM(Asynchronous Transfer Mode)-PON(Passive Optical Network) slave device and a transmitting and receiving method therefor are provided to smoothly control priority by composing FIFOs according to traffic containers having priorities. CONSTITUTION: A reception frame processing unit(411) receives data and transmits the received data. A UTOPIA(Universal Test and Operations PHY Interface for ATM) receiving unit(412) receives the data from the reception frame processing unit(411), stores the received data in a FIFO, and transmits the stored data to an ATM layer. A UTOPIA transmitting unit(417) receives the data from the ATM layer, stores the received data in at least two FIFOs according to grades, and transmits the stored data. A transmission frame processing unit(416) receives the data from the UTOPIA transmitting unit(417), and transmits the received data to an OLT(Optical Line Termination).
Abstract translation: 目的：提供ATM（异步传输模式）-PON（被动光网络）从设备及其发送和接收方法，以根据具有优先级的流量容器组合FIFO来平滑地控制优先级。 构成：接收帧处理单元（411）接收数据并发送接收到的数据。 UTOPIA（ATM的通用测试和操作PHY接口）接收单元（412）从接收帧处理单元（411）接收数据，将所接收的数据存储在FIFO中，并将所存储的数据发送到ATM层。 UTOPIA发送单元（417）从ATM层接收数据，根据等级将接收的数据存储在至少两个FIFO中，并发送存储的数据。 发送帧处理单元（416）从UTOPIA发送单元接收数据（417），并将所接收的数据发送到OLT（光线路终端）。
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公开(公告)号：KR1020030063544A
公开(公告)日：2003-07-31
申请号：KR1020020003710
申请日：2002-01-22
Applicant: 한국전자통신연구원
IPC: H04B1/03
CPC classification number: H04B1/036
Abstract: PURPOSE: An outdoor housing of an ONU(Optical Network Unit) is provided to be attached to a pole or the surface of a wall in an FTTC(Fiber To The Curb)-type communication network, thereby safely protecting a system from external environment changes. CONSTITUTION: A cavity(110) configures an external shape of a housing, and has a shelf for mounting a board of a communication system. An upper plate(120) covers an upper part of the cavity(110), and has a curved external surface. A left-side door(130) installs a terminal box for managing input/output of an ONU. A right-side door(140) installs a power module for supplying power to the ONU. A battery box(170) is detachably in drawer type, and is installed in a lower part of the cavity(110) in order to supply the power to the power module.
Abstract translation: 目的：提供一个ONU（光网络单元）的户外外壳，用于安装在FTTC（光纤到路边）型通信网络的极点或墙壁表面，从而安全地保护系统免受外界环境的影响 。 构成：空腔（110）构成壳体的外部形状，并且具有用于安装通信系统的板的搁架。 上板（120）覆盖空腔（110）的上部，并且具有弯曲的外表面。 左侧门（130）安装用于管理ONU的输入/输出的接线盒。 右侧门（140）安装用于向ONU供电的电源模块。 电池盒（170）可拆卸地装在抽屉式中，并且安装在空腔（110）的下部，以向电源模块供电。
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