公开(公告)号：KR100473808B1

公开(公告)日：2005-03-11

申请号：KR1020020070644

申请日：2002-11-14

Applicant: 한국전자통신연구원

Inventor： 조재형 ,  송호영

IPC: G02B6/44

Abstract: 본 발명은 투명 광케이블에 관한 것으로서, 그 투명 광케이블은 광케이블에 있어서, 적어도 하나 이상의 광섬유; 그 재질이 투명하며, 광섬유를 실장하며 상기 광케이블의 최외곽에 위치하는 외피자켓; 및 외부자켓과 상기 광섬유사이의 공간을 채워주는 투명한 방수부재를 포함함을 특징으로 한다.
본 발명에 의하면, 재질로 구성된 광 케이블을 건물의 외벽, 복도 등에 설치 할 경우, 케이블이 배선된 배경의 색을 투과시키므로 눈에 잘 뜨이지 않고, 모양이 미려하여 건물의 외관을 해치지 않게 된다. 결과적으로 이 같은 투명한 광 케이블은 건물의 외벽 눈에 뜨이기 쉬운 장소에도 배선이 적합하여 배선을 위한 설치가 쉽고 또한 육안으로도 내부의 광섬유 상태등 배선 상태를 점검 하기가 쉬워서 유지보수 비용이 낮아질 수 있는 장점이 있다.

公开(公告)号：KR100440587B1

公开(公告)日：2004-07-19

申请号：KR1020020031366

申请日：2002-06-04

Applicant: 한국전자통신연구원

Inventor： 조재형 ,  이계선 ,  전병천 ,  이유경

IPC: H04L12/18

Abstract: PURPOSE: A multicast service method in an MPLS(Multi Protocol Label Switching) network is provided to eliminate the consumption of resources due to path establishment by making all groups share a previously established LSP(Label Switched Path), instead of forming a distribution tree for each group. CONSTITUTION: A BSR(BootStrap Router), the highest priority node among RP(Rendezvous Point) nodes, broadcasts an integrated, certified bootstrap message to the RP nodes periodically, and the RP nodes broadcast bootstrap messages to their respective LERs(Label Edge Routers)(101). Subscriber terminals transfer join messages to RP nodes through LERs respectively. The LERs and the RP nodes get to a group data forwarding state and a multicast forwarding state respectively by the transmitted join messages(102). If a packet is received from an arbitrary subscriber terminal to an adjacent LER(103), the LER analyzes the header of the received IP packet(104). Based on RP information delivered from the bootstrap message, the LER transfers the packet to an RP node appointed to service a group specified as the destination of the packet(105). The RP node reproduces the transferred multicast data packet as much as the number of LERs to which the members of the group are connected and delivers them to the LERs through an LSP(106). Each LER reproduces the delivered packet as much as the number of group members in an external network and delivers them to the subscriber terminals(107).

Abstract translation: 目的：提供MPLS（多协议标签交换）网络中的多播服务方法，以通过使所有组共享先前建立的LSP（标签交换路径）来消除由于路径建立而导致的资源消耗，而不是形成用于 每组。 构成：RP（Rendezvous Point）节点中的最高优先级节点BSR（BootStrap Router）周期性地向RP节点广播集成的，经过验证的自举消息，RP节点将自举消息广播到它们各自的LER（标签边缘路由器） （101）。 用户终端分别通过LER将加入消息转发给RP节点。 LER和RP节点通过发送的加入消息分别达到组数据转发状态和组播转发状态（102）。 如果从任意用户终端接收到分组到相邻LER（103），则LER分析接收到的IP分组的报头（104）。 基于从引导消息传送的RP信息，LER将分组传送到被指定为服务指定为分组的目的地的组的RP节点（105）。 RP节点再现所传送的组播数据包的数量与该组成员所连接的LER的数量一样多，并通过LSP将它们递送给LER（106）。 每个LER再现与外部网络中的组成员数量一样多的分发的分组，并将它们传送给用户终端（107）。

公开(公告)号：KR1020040035103A

公开(公告)日：2004-04-29

申请号：KR1020020063837

申请日：2002-10-18

Applicant: 한국전자통신연구원

Inventor： 조재형 ,  이형호

IPC: H04B10/27 ,  H04B10/25

CPC classification number: H04Q11/0067 ,  H04Q2011/0064 ,  H04Q2011/0086

Abstract: PURPOSE: A PON(Passive Optical Network) system using simple polling algorithm is provided to be supplied by using a network processor using one high-speed processor chip controlled by programming firmware without using another PON-only MAC device, thereby easily configuring the PON system. CONSTITUTION: An ONU(Optical Network Unit) searcher(710) searches an ONU that an OLT(Optical Line Termination) does not recognize, among many ONUs that are normally operated. A new ONU existence decider(720) decides whether new ONUs exist. If so, a new ONU register(730) registers the searched new ONUs in a polling list. A polling message transmitter(750) transmits a polling message including destination address information to the ONUs existing in the polling list. A response message and data receiver(760) receives an NAK(Non Acknowledgement) message or data showing that data to be transmitted do not exist, from the ONUs corresponding to the destination address information.

Abstract translation: 目的：提供一种使用简单轮询算法的PON（Passive Optical Network，无源光网络）系统，通过使用一个网络处理器，使用一个由编程固件控制的高速处理器芯片，而不使用另一个只有PON的MAC设备，从而轻松配置PON系统 。 构成：ONU（光网络单元）搜索器（710）在正常操作的许多ONU中搜索OLT（光线路终端）不能识别的ONU。 新的ONU存在决定器（720）决定是否存在新的ONU。 如果是，新的ONU寄存器（730）将搜索到的新的ONU注册在轮询列表中。 轮询消息发送器（750）将包括目的地地址信息的轮询消息发送到存在于轮询列表中的ONU。 响应消息和数据接收器（760）从对应于目的地地址信息的ONU接收到NAK（非确认）消息或表示要发送的数据的数据不存在的数据。

公开(公告)号：KR1020040019130A

公开(公告)日：2004-03-05

申请号：KR1020020049388

申请日：2002-08-21

Applicant: 한국전자통신연구원

Inventor： 조재형 ,  유제훈 ,  이형호 ,  송호영 ,  김관중 ,  이우섭 ,  임동선

IPC: H04L12/931

CPC classification number: H04L49/25 ,  H04L49/40

Abstract: PURPOSE: A packet switching system using a distributed packet processing unit is provided to distribute many low-priced remote packet processing units outside of a switch instead of a high performance packet processing unit when configuring a high-speed switching system, thereby improving system performance and system configurations. CONSTITUTION: A packet switching system(200) has many packet processors(21) and a switching unit(22). The packet processors(21) process data packets. The switching unit(22) switches the processed data packets. Packet processors(21) consist of packet processors(24) for processing data packets transmitted from external users(20) and transmission devices(25) transmitting the processed data. The switching unit(22) comprises as follows. An interface(26) receives the data transmitted from the transmission devices(25). An exchange device(27) transmits the data to a rear switch(28). The rear switch(28) outputs the transmitted data by switching the data. A main processor(29) transmits packet path information and internal switching information to the packet processors(24) and the rear switch(28), respectively.

Abstract translation: 目的：提供一种使用分布式数据包处理单元的分组交换系统，用于在配置高速交换系统时，将许多低价位的远程数据包处理单元分配到交换机外部而不是高性能分组处理单元，从而提高系统性能， 系统配置。 构成：分组交换系统（200）具有许多分组处理器（21）和切换单元（22）。 分组处理器（21）处理数据分组。 切换单元（22）切换处理的数据分组。 分组处理器（21）由用于处理从外部用户（20）发送的数据分组的分组处理器（24）和发送处理后的数据的传输设备（25）组成。 切换单元（22）包括如下。 接口（26）接收从发送装置（25）发送的数据。 交换装置（27）将数据发送到后部开关（28）。 后部开关（28）通过切换数据来输出发送的数据。 主处理器（29）分别向分组处理器（24）和后置开关（28）发送分组路径信息和内部切换信息。