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公开(公告)号：KR100875911B1
公开(公告)日：2008-12-26
申请号：KR1020060086283
申请日：2006-09-07
Applicant: 한국전자통신연구원
Abstract: A method and an apparatus for updating link state information are provided to remarkably reduce the overheads due to link state update and the fluctuation of a routing protocol by reducing the number of times link state information is updated. A node, in a network where a plurality of nodes are connected through links, transmits link state information, which indicates the state of its own connected link, to a neighbor node, and constructs a whole network link state table containing link state information of the whole network, based on the transmitted link state information(S110). If a QoS routing request is made, the node configures a QoS routing table, based on the whole network link state table, and establishes a QoS path. The node calculates a value consumed for the resources of each link located on the established QoS path and acquires the present value and average value of the link state information(S120). In case the difference between the present value and average value of the link state information is larger than a threshold, the node transmits the present value to the neighbor node(S130).
Abstract translation: 提供了一种更新链路状态信息的方法和装置，通过减少链路状态信息更新的次数，可以显着降低链路状态更新和路由协议波动带来的开销。 在多个节点通过链路连接的网络中的节点向相邻节点发送表示其自身的连接链路的状态的链路状态信息，并且构建包含该链路状态信息的整个网络链路状态表 基于所发送的链路状态信息的整个网络（S110）。 如果进行QoS路由请求，则节点基于整个网络链路状态表来配置QoS路由表，并建立QoS路径。 节点计算对于位于建立的QoS路径上的每个链路的资源消耗的值，并且获取链路状态信息的当前值和平均值（S120）。 在链路状态信息的当前值和平均值之间的差值大于阈值的情况下，节点将当前值发送到邻居节点（S130）。
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公开(公告)号：KR1020070059924A
公开(公告)日：2007-06-12
申请号：KR1020060086283
申请日：2006-09-07
Applicant: 한국전자통신연구원
Abstract: A method and an apparatus for updating link state information are provided to remarkably reduce the overheads due to link state update and the fluctuation of a routing protocol by reducing the number of times link state information is updated. A node, in a network where a plurality of nodes are connected through links, transmits link state information, which indicates the state of its own connected link, to a neighbor node, and constructs a whole network link state table containing link state information of the whole network, based on the transmitted link state information(S110). If a QoS routing request is made, the node configures a QoS routing table, based on the whole network link state table, and establishes a QoS path. The node calculates a value consumed for the resources of each link located on the established QoS path and acquires the present value and average value of the link state information(S120). In case the difference between the present value and average value of the link state information is larger than a threshold, the node transmits the present value to the neighbor node(S130).
Abstract translation: 提供一种用于更新链路状态信息的方法和装置，通过减少链路状态信息被更新的次数，显着地减少了链路状态更新引起的开销和路由协议的波动。 通过链路连接多个节点的网络中的节点将指示其自身连接链路的状态的链路状态信息发送到邻居节点，构成包含链路状态信息的整个网络链路状态表， 整个网络，基于发送的链路状态信息（S110）。 如果进行QoS路由请求，则根据整个网络链路状态表，节点配置QoS路由表，并建立QoS路径。 该节点计算针对建立的QoS路径上的每个链路的资源消耗的值，并获取链路状态信息的当前值和平均值（S120）。 在链路状态信息的当前值和平均值之间的差大于阈值的情况下，节点将当前值发送到邻居节点（S130）。
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13.发明授权엠피엘에스（ＭＰＬＳ）기반망에서의 엑스트라넷아이피-브이피엔（ＩＰ－ＶＰＮ）서비스 제공 방법 失效MPLS엘에스스（MPLS）기반망에서의엑스트라넷아이피 - 브이피엔（IP-VPN）서스스제공방엠피
公开(公告)号：KR100431207B1
公开(公告)日：2004-05-12
申请号：KR1020020026442
申请日：2002-05-14
IPC: H04L12/28
Abstract: PURPOSE: A method for supplying an extranet IP-VPN(Virtual Private Network) service in an MPLS(Multi Protocol Label Switching)-based network is provided to simply support the extranet service, and to assign more than one RD(Route Descriptor) for the same interface, thereby simultaneously supporting an intranet service and the extranet service. CONSTITUTION: When path information is added(231), a CE(Customer Edge)1(121) transmits the path information to a PE(Provider Edge)1(111)(232). The PE1(111) retrieves an RD, and decides whether a VPN_intra1 is connected with a VPN_extra2(233), then distributes path update information to BGP peers(234). The path update message is reflected on a VPN_extra2 table of a PE3(113)(235). The PE3(113) transmits the path information to a CE3(123)(236), and modifies route information(237). The received information is reflected on a VPN_extra2 table of a PE4(114)(239). The PE4(114) transmits the path information to a CE4(124)(240).
Abstract translation: 目的：提供一种在基于MPLS（多协议标签交换）的网络中提供外部网络IP-VPN（虚拟专用网络）服务的方法，以简单地支持外部网络服务，并为多个RD（路由描述符） 同一接口，从而同时支持内联网服务和外联网服务。 构成：当添加路径信息（231）时，CE（客户边缘）1（121）将路径信息发送给PE（提供商边缘）1（111）（232）。 PE1（111）检索RD，并确定VPN_intra1是否与VPN_extra2（233）连接，然后将路径更新信息分发给BGP对等体（234）。 路径更新消息反映在PE3的VPN_extra2表（113）（235）上。 PE3（113）将路径信息发送到CE3（123）（236），并修改路线信息（237）。 接收到的信息反映在PE4（114）（239）的VPN_extra2表中。 PE4（114）将路径信息发送给CE4（124）（240）。
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14.发明授权
公开(公告)号：KR100353850B1
公开(公告)日：2002-09-28
申请号：KR1020000066638
申请日：2000-11-10
IPC: H04L12/28
Abstract: 본 발명은 멀티 프로토콜 레이블 교환(MPLS) 망에서 라우터간의 트래픽 흐름들에 대한 서비스품질(QoS)을 보장하는 경로 보호 방법 및 그 기록매체에 관한 것으로서, MPLS 망 등에서 임의의 두 레이블 에지 라우터(LER : Label Edge Router)간의 트래픽 흐름의 집합에 대한 QoS 조건이 주어져 있을 때, 사전 보호 경로 설정을 통해 망의 고장시에 신속히 제한적 레이블 스위치 경로(CR-LSP)를 복구하여 그 QoS 조건을 보장함으로써, 망의 자원 활용도와 서비스 가용성을 최대화하기 위한 경로 보호 방법 및 그 기록매체를 제공하기 위하여, 한 쌍의 LER 사이의 트래픽 흐름의 집합에 대한 QoS 조건을 만족하는 동작/보호 경로들로 경로 집합을 설정하는 단계; 설정된 경로 집합에 속하는 모든 경로들을 동작 경로로 활용하면서 동시에 서로의 보호 경로로도 활용할 수 있도록, 트래픽 흐름 집합에 속하는 각 트래픽 흐름들이 요구하는 자원을 경로 집합에 속하는 모든 경로들에 할당하여 예약한 후에, 고장인 경로를 식별하는 단계; 및 정상인 상태에서 고장인 상태로 바뀐 경로들에 할당되었던 예약 자원을 정상인 경로로 옮겨 할당함으로써 트래픽 흐름 집합의 QoS 조건을 만족시켜, 트래픽 흐름 집합을 QoS 조건이 만족되도록 전송하는 단계를 포함함.
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公开(公告)号：KR1020020053519A
公开(公告)日：2002-07-05
申请号：KR1020000083177
申请日：2000-12-27
IPC: H04L12/20
CPC classification number: H04L45/507 , H04L12/4641 , H04L63/0272
Abstract: PURPOSE: A VPN(Virtual Private Network) service system in an MPLS(Multi Protocol Label Switching) network and a method thereof are provided so that an edge router can efficiently provide VPN service on the basis of a communication network like an MPLS network. CONSTITUTION: An operator command processing block(11) receives and processes an operator's command. A VPN_CFB(12) is a VPN service function block that provides VPN service actually. A BGP4_FB(13) indicates a BGP4+ function block to transfer generic routing information and VPN routing information. An SIG_FB(14), a function block to set up an LSP(Label Switched Path), executes a CR-LDP protocol or an RSVP-TE protocol. An IBM_FB(15) creates a resource management and forwarding entry and transfers the created entry to a VFE_FB(16). The VFE_FB(16) indicates a forwarding engine. A VPN_comp_t(17) is a table to manage information related to VPN groups and sites. A VPN_rib_t(18) is a table to manage VPN routing information. A VPN_path_t(19) is a table to manage paths by the site. An LSP_table(20) stores LSP associated information. A VPN_ft(21) indicates a VPN forwarding table.
Abstract translation: 目的：提供MPLS（Multi Protocol Label Switching，多协议标签交换）网络中的VPN（Virtual Private Network，虚拟专用网）业务系统及其方法，使得边缘路由器可以在诸如MPLS网络的通信网络的基础上高效地提供VPN业务。 构成：操作员指令处理块（11）接收并处理操作者的命令。 VPN_CFB（12）是实际提供VPN业务的VPN业务功能块。 BGP4_FB（13）表示传输通用路由信息和VPN路由信息的BGP4 +功能块。 SIG_FB（14）是建立LSP（标签交换路径）的功能块，执行CR-LDP协议或RSVP-TE协议。 IBM_FB（15）创建资源管理和转发条目，并将创建的条目传输到VFE_FB（16）。 VFE_FB（16）表示转发引擎。 VPN_comp_t（17）是管理与VPN组和站点有关的信息的表。 VPN_rib_t（18）是一个管理VPN路由信息的表格。 VPN_path_t（19）是用于管理站点路径的表。 LSP_table（20）存储LSP相关信息。 VPN_ft（21）表示VPN转发表。
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Patent Agency Ranking
公开(公告)号：KR100995905B1
公开(公告)日：2010-11-23
申请号：KR1020080084048
申请日：2008-08-27
Applicant: 한국전자통신연구원 , 성균관대학교산학협력단
Abstract: 본 발명은, 트래픽이 집중되는 MPP, 및 MPP와 직접 연결되는 MP 사이를 프레임 충돌이 많고 혼잡도가 높은 경쟁 방식 대신, 무경쟁 구간으로 설정함으로써 MPP에 대한 트래픽 집중현상을 최소화하는 무선 네트워크의 병목현상 처리방법에 대한 것이다. 이를 위해, 본 발명은 MPP(Mesh Portal)과 직접 접속되는 제1MP(Mesh Point)에 무경쟁 채널 구간을 할당하는 단계, 및 MPP와 간접 접속되는 제2MP(Mesh Point)에 경쟁 채널 구간을 할당하는 단계를 포함한다.
802.11s, PCF, DCF, MPP, MP-
公开(公告)号：KR1020100025334A
公开(公告)日：2010-03-09
申请号：KR1020080084048
申请日：2008-08-27
Applicant: 한국전자통신연구원 , 성균관대학교산학협력단
CPC classification number: H04W72/048 , H04W28/0289 , H04W74/04 , H04W74/085
Abstract: PURPOSE: A method for processing a wireless network bottleneck phenomenon in a wireless network are provided to prevent the increase of traffic and bottleneck phenomenon between MPs(Mesh Points) that directly contact an MPP(Mesh Portal) according as the number of user terminals are increased. CONSTITUTION: Contention-free channel interval is allocated to first MPs(51,52) contacting an MPP(100), and the MPP broadcasts a beacon frame to the first MPs. Contention channel interval is allocated to second MPs that indirectly contact the MPP. The contention-free channel interval is the interval in which data transmission and reception are process according to a PCF(Point Coordination Function), and the contention channel interval is the interval in which data transmission and reception are process according to the DCF(Distributed Coordination Function).
Abstract translation: 目的：提供一种处理无线网络中无线网络瓶颈现象的方法，以防止随着用户终端数量的增加直接接触MPP（Mesh Portal）的MP（Mesh Point）之间的流量和瓶颈现象增加 。 规定：无竞争信道间隔被分配给接触MPP（100）的第一MP（51,52），并且MPP向第一MP广播信标帧。 竞争渠道间隔被分配给间接联系MPP的第二MP。 无竞争信道间隔是根据PCF（点协调功能）处理数据发送和接收的间隔，并且争用信道间隔是根据DCF（分布式协调）处理数据发送和接收的间隔 功能）。
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公开(公告)号：KR100776789B1
公开(公告)日：2007-11-19
申请号：KR1020060112892
申请日：2006-11-15
Applicant: 한국전자통신연구원
Abstract: A link information management method of OSPF(Open Shortest Path First)-TE(Traffic Engineering) and a device are provided to generate relatively small link state advertising messages through available bandwidth change information of accumulated links and changed available bandwidth information of links, thereby preventing an increase in traffic within a network. TE link information set by an operator is inputted(201). A neighbor with a routing peer of neighboring nodes is formed by using link management information initialized on the basis of the TE link information(202,203). The TE link information is exchanged with the neighboring nodes to configure a TE-LSDB(Link State DB) for providing TE paths(204). If a TE link resource information change event occurs, the link management information is updated(205,206). It is decided whether to advertise the TE link resource information change based on statistical information of available link bandwidths, and the routing peer of the neighboring nodes is notified with the change of the TE link resource information(207,208). The TE-LSDB is reconfigured according to the changed TE link resource information(209).
Abstract translation: 提供了OSPF（开放最短路径优先）-TE（流量工程）和设备的链路信息管理方法，用于通过可用的链路的带宽变化信息生成相对较小的链路状态广告消息，并改变链路的可用带宽信息，从而防止 网络中流量的增加。 输入由操作者设定的TE链接信息（201）。 通过使用基于TE链路信息（202,203）初始化的链路管理信息来形成具有相邻节点的路由对等体的邻居。 TE链路信息与相邻节点交换，配置TE-LSDB（Link State DB），用于提供TE路径（204）。 如果发生TE链路资源信息改变事件，链路管理信息被更新（205,206）。 决定是否根据可用链路带宽的统计信息通告TE链路资源信息变化，通过TE链路资源信息的改变来通知相邻节点的路由对等体（207,208）。 TE-LSDB根据改变的TE链路资源信息重新配置（209）。
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公开(公告)号：KR1020020051542A
公开(公告)日：2002-06-29
申请号：KR1020000080914
申请日：2000-12-22
IPC: H04L12/16
CPC classification number: H04L12/4641 , H04L45/507 , H04L63/0272
Abstract: PURPOSE: A method for providing extranet VPN(Virtual Private Network) service in an MPLS(Multi Protocol Label Switching) network is provided to offer intranet VPN service and extranet VPN service at the same time, without having an effect on an old service providing mechanism, by utilizing a route target and a VPN label variable used in existing MPLS VPN intranet service. CONSTITUTION: A VPN packet processing procedure at an MPLS terminal side is divided into egress forwarding, extra-gate forwarding, and relay forwarding. In order to effectively classify it, a VPN label is composed of a 2-bit label type classifier(401) and 18-bit label index information(402). The 2-bit label type classifier(401) indicates a forwarding method, and the 18-bit label index information(402) indicates an output IF or an index for a table for access filtering. If a VPN packet is received, an extranet gateway and egress LER checks the VPN label value carried with the received packet and recognizes which procedure to be executed.
Abstract translation: 目的：提供MPLS（Multi Protocol Label Switching，多协议标签交换）网络中的Extranet VPN（Virtual Private Network，虚拟专用网）业务同时提供内部VPN业务和Extranet VPN业务的方法，而不影响旧业务提供机制 通过使用现有的MPLS VPN内联网服务中使用的路由目标和VPN标签变量。 规定：MPLS终端侧的VPN报文处理过程分为出站转发，外网转发和中继转发。 为了有效地对其进行分类，VPN标签由2位标签类型分类器（401）和18位标签索引信息（402）组成。 2位标签类型分类器（401）表示转发方法，18位标签索引信息（402）表示用于访问过滤的表的输出IF或索引。 如果接收到一个VPN数据包，外部网关和出口LER会检查接收到的数据包携带的VPN标签值，并识别执行哪个过程。
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公开(公告)号：KR101436187B1
公开(公告)日：2014-09-01
申请号：KR1020100113529
申请日：2010-11-15
Applicant: 한국전자통신연구원 , 성균관대학교산학협력단
CPC classification number: H04W36/32
Abstract: 본 발명은 단말기에서 수신신호 세기와 시신속도를 이용한 핸드오버 장치 및 방법에 관한 것이다. 본 발명의 일 실시예에 따른 핸드오버 방법은 현재 접속중인 기지국의 수신신호 세기와 핸드오버 후보 기지국들의 수신신호 세기를 측정하고, 측정한 수신신호 세기를 이용해서 상기 현재 접속중인 기지국의 시선속도와 상기 핸드오버 후보 기지국들의 시선속도를 측정하고, 상기 가장 큰 수신신호 세기를 가지는 기지국과 상기 가장 작은 시선속도를 가지는 기지국이 동일한 기지국이고 상기 가장 큰 수신신호 세기를 가지는 기지국이 상기 현재 접속중인 기지국이 아니면 상기 가장 큰 수신신호 세기를 가지는 기지국으로 핸드오버 한다.
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