Abstract:
PURPOSE: A method of a handover between communication network and a broadcast network, a communication network handover controller, and a broadcast network handover controller are provided to start a handover procedure in a network terminal. CONSTITUTION: A broadcasting contents confirmation unit(210) confirms the broadcasting contents which are continuously provided through a second network, and a network selection unit(230) considers the information on available resources and the provision of the broadcasting contents received from peripheral network in order to select at least one second network which provides broadcasting contents. A transmission and reception unit(250) transmits a previous preparation request message for the handover to at least one second network. The transmission and reception unit transmits a message which requests the watching of the broadcasting contents through the second network.
Abstract:
후보 CoA들을 이용한 빠른 핸드오버 방법이 개시된다. 먼저, 이동노드가 접속되어 있는 액세스 라우터에 인접한 다른 액세스 라우터들의 IP(Internet Protocol) 주소 정보를 획득하고, 획득한 IP 주소 정보를 기초로 적어도 하나 이상의 후보 CoA(Care of Address)를 설정한 후, 이동노드가 이동할 서브넷에 대한 CoA를 후보 CoA에서 선택하여 핸드오버를 수행한다. 이로써, 새로운 CoA 설정에 따른 지연 및 패킷 유실을 방지할 수 있다.
Abstract:
프락시 모바일 IP를 위한 빠른 핸드오버 방법이 개시된다. 이동 노드를 대신하여 무선 액세스 포인트인 PoA에서 모바일 IP 프로토콜을 수행하는 프록시 모바일 IP(PMIP)를 제공함으로써, 핸드오버시 발생하는 패킷유실 및 지연을 방지할 수 있다. 프락시 모바일 IP, CoA, 홈 에이전트, 핸드오버
Abstract:
A fast handover method using candidate CoAs(Care of Addresses) is provided to avoid delay when an NCoA(New Care of Address) is set in a new network by previously setting one or more candidate NCoAs and selecting one at a time point of determining a target PoA. IP address information of different ARs(Access Routers) adjacent to a PAR(Previous Access Router)(220) to which an MN(Mobile Node)(220) is connected is obtained. At least one or more CoAs are set based on the IP address information. The MN(200) selects a CoA for a sub-net to which the MN(200) is to move from the candidate CoAs, and performs handover based on the selected CoA.
Abstract:
미디어 독립 핸드오버(Media Independent Handover, MIH)를 위한 서비스를 제공하는 장치 및 방법가 개시된다. 제1 노드는 제2 노드가 제1 계층을 통해 서비스를 지원하는 지 여부에 대한 정보와 제2 노드가 제2 계층을 통해 서비스를 지원하는 지 여부에 대한 정보를 포함하는 MIH 능력 탐지 메시지를 제2 노드로부터 수신하고, 제1 계층과 제2 계층 중에서 상기 서비스를 제공하기 위한 계층인 서비스 제공 계층을 선택한다. 그리고 나서 제1 노드는 서비스 제공 계층을 통해 제2 노드에 서비스를 제공한다. 이로써 제1 노드는 제2 노드의 MIH 능력을 용이하게 파악할 수 있기 때문에 MIH를 효과적으로 수행할 수 있다. MIH, IEEE 802.21, Handover
Abstract:
A network apparatus and packet routing method for ubiquitous computing are provided. In the network apparatus, a movement detection unit detects movement from a first network to a second network, and a movement address setting unit generates care-of-address (CoA) information corresponding to prefix information of the second network. A movement registration unit registers a movement address by transmitting a binding update message containing the generated CoA and home address (HoA) mapping information, to a home agent. A resource setting unit registers information on current terminal apparatuses among network terminal apparatuses on the second network. A packet distribution unit distributes the received packet to a current terminal apparatus corresponding to the application characteristic of the packet received from the home agent based on the information on the current terminal apparatuses.
Abstract:
PURPOSE: A system for a network security service including a classifier based on a blacklist is provided to promptly confront an intrusion of an attacking packet by detecting the attacking packet from a specified site before intruding into a service provider network. CONSTITUTION: A blacklist table(300) records the danger information for the near sites. The classifier(302) classifies the packets intruding from the near sites based on the danger information of the site registered to the blacklist table by installing to an entering point of the service provider network. The classifier switches the data processing paths in order to transmit the classified packet through the preset data processing path depending on the danger of the site from a parallel/serial connection path between the classifier and a confronting device(306), and the connection path to the confronting device not passing the classifier. An analyzer(304) discriminates the attacking packet by analyzing the packet entered from the classifier. The confronting device blocks the packet judged as the attacking packet or warns the detection of the attacking packet.
Abstract:
PURPOSE: A method for blocking a cracker of an ISP(Internet Service Provider) border router by packet filtering and a system therefor are provided to disconnect an unlawful trespass traffic inputted through the border router of an ISP network by analyzing pattern and isolate the cracker from the network. CONSTITUTION: If packet data are inputted through a network, a sampling unit samples the packet data(S1). A traffic pattern analyzing unit judges whether many packet data are generated within a short time(S2). If many packet data are generated within the short time, the traffic pattern analyzing unit analyzes a traffic pattern(S3). An unlawful packet judging unit judges whether the corresponding packet data go toward an unlawful source IP(Internet Protocol) address or the same destination IP address(S4). If the corresponding packet data go toward the unlawful source IP address or the same destination IP address, the unlawful packet judging unit decides the corresponding packet data as unlawful packet data(S5). A packet filter filters the unlawful packet data(S6). The packet filter forwards lawful packet data except for the unlawful packet data to a destination IP address(S7).
Abstract:
중심 네트워크에 위치하는 핸드오버 제어 장치가 방송망과 통신망간 사용자 단말 그룹의 핸드오버를 제어한다. 핸드오버 제어 장치는 방송망과 통신망 중 현재 방송 컨텐츠를 제공하고 있는 전송망에서 이상 상태가 감지되거나 전송망으로부터 방송 컨텐츠를 타 전송망이 제공하도록 하는 요구 메시지를 수신하면, 방송 컨텐츠를 제공할 타겟 전송망을 선택하고, 사용자 단말 그룹으로 선택한 타겟 전송망으로 핸드오버 요청 메시지를 멀티캐스트 또는 브로드캐스트 전송 형태로 전송한다.