Abstract:
PURPOSE: A conversion device and method between an IPv6 address and an IPv4 address using dynamic mapping in a flow-based router are provided to perform conversion between the IPv6 address and the IPv4 address with the generation of a mapping table for communication between an IPv6 network and an IPv4 network in the router. CONSTITUTION: An IPv4 address pool(110) dynamically assigns an IPv4 address to an IPv6 terminal. A mapping table administration unit(140) creates the mapping table of the IPv4 address. A mapping table search unit(130) refers to a mapping table corresponding to an IPv6 packet in which the address conversion is necessary. A packet processing unit(120) performs packet forwarding through the lookup of IPv4 and IPv6 FIB(Forwarding Information Base) tables. On the basis of the searched mapping table, an address converting unit(150) performs address conversion.
Abstract:
An apparatus and a method for supporting a network based mobile IPv6 are provided to enable an access router to support an MIPv6 function without adding a separate protocol, thereby providing mobility to a general IPv6 terminal in which an MIPv6 stack is not mounted. A home address setting unit(152) receives a home address of a mobile node. The received home address is registered in a routing table. Transmitted binding information is registered in a binding update list(156). A binding register(154) transmits a binding update message to an external device. A packet processor(160) removes a header of a packet received from the external device. The packet is transmitted to the mobile node.
Abstract:
An apparatus for providing mobility to an MN in a wireless LAN(Local Area Network) and a method therefor are provided to configure a new CoA previously to be used in the MN after the MN moves to a new AP to provide IP mobility with the minimum handover latency and packet loss, thereby improving the service quality of the mobile terminal. A method for providing mobility of to an MN(Mobile Node)(201) comprises the following steps of: registering the MAC(Media Access Control) address and IP(Internet Protocol) address of an AP(Access Point)(212), the IP address and layer2 information of an AR(Access Router)(213) to which the AP belongs(S201); transmitting a RADIUS access request message including the MAC address of a new AP(222), which the MN detects newly, to a RADIUS server(204) and acquire the IP address of a new AR(223) to which the new AP belongs(S208,S209); transmitting an AR information request message for requiring the IP prefix information of the new AR, which the new AR distributes, to the new AR(S210); constructing an AR cache table storing the IP prefix information of the new AR to which the new AP belongs to(S212); and configuring a new CoA(Care of Address) previously which is to be used in the MN after the MN moves to the new AP on the basis of the IP prefix information acquired from the new AR(S214).
Abstract:
본 발명은 라우팅 시스템에서 이중화(Redundancy)에 의한 프로세서 절체 시에도 고속의 패킷 포워딩이 가능한 포워딩 테이블 관리 방법 및 장치에 관한 것이다. 상기 포워딩 테이블 관리 방법 및 장치는, 이중화를 지원하는 라우팅 시스템에 있어서, 이중화에 의한 프로세서 절체가 시작되면 포워딩 테이블을 임시로 유지하면서, 이중화가 완료되면 새롭게 구성되는 포워딩 정보와 함께 이중화 수행 전에 구성된 임시 포워딩 정보를 시스템 최대 포워딩 테이블 사이즈 내에서 또는 일정 시간동안 유지하게 하여, 이중화에 의한 프로세서간의 절체 수행시에도 고속의 패킷 포워딩을 가능하게 한다. 이중화(Redundancy), 포워딩 테이블, 패킷, 임시(temporary), 포워딩 엔트리,
Abstract:
PURPOSE: A routing table data structure using a class division method, and a method and an apparatus for retrieving a routing path by a routing table are provided to retrieve the routing table composed using the class division method. CONSTITUTION: Prefix information composed as a network address and valid length information is received(710). A class is judged using a length of the prefix to be retrieved(720). It moves to an index tree corresponding to the class, and the first data corresponding to the class are received(730). The received first data are compared with one byte of the network address(740). It moves to a next node, a key value is read, and a next one byte value of the prefix is read(750). It is judged whether a data node of a last destination address path is searched(760). If the data node of the last destination address path is searched, an external interface path value corresponding to the data node is outputted(770).
Abstract:
PURPOSE: A routing table data structure using a class division method, and a method and an apparatus for retrieving a routing path by a routing table are provided to retrieve the routing table composed using the class division method. CONSTITUTION: Prefix information composed as a network address and valid length information is received(710). A class is judged using a length of the prefix to be retrieved(720). It moves to an index tree corresponding to the class, and the first data corresponding to the class are received(730). The received first data are compared with one byte of the network address(740). It moves to a next node, a key value is read, and a next one byte value of the prefix is read(750). It is judged whether a data node of a last destination address path is searched(760). If the data node of the last destination address path is searched, an external interface path value corresponding to the data node is outputted(770).
Abstract:
본 발명에 의한 컨텐츠 ID를 기반으로 IP 패킷을 전송하기 위한 장치 및 그 방법이 개시된다. 본 발명에 따른 컨텐츠 ID를 기반으로 IP 패킷을 전송하기 위한 시스템은 이동 단말기로부터 IP(Internet Protocol) 패킷을 수신하면, 수신된 상기 IP 패킷에 포함된 CID(Contents Identification)와 기 저장된 컨텐츠 캐시 테이블을 이용하여 상기 IP 패킷을 라우팅하는 라우터; 및 상기 IP 패킷에 포함된 컨텐츠 데이터를 기반으로 상기 CID를 할당하는 CID 할당 서버를 포함한다. 이를 통해, 본 발명은 데이터를 효율적으로 전송하고, 시스템의 운영비용을 절감할 뿐 아니라 서비스의 품질을 향상시키며, 서비스를 제공하는 사업자의 수익을 증대시킬 수 있다.
Abstract:
본 발명은 지오캐스트 시스템 및 패킷 라우팅 방법에 관한 것으로, 지오캐스트 시스템은 제1 라우터 및 제2 라우터를 포함한다. 여기서, 제1 라우터는 하나 이상일 수 있고, 목적지 아이피 주소 및 목적지 위치 정보가 포함된 패킷을 수신하면, 미리 정의된 라우팅 경로 중에서 패킷의 목적지 아이피 주소에 대응하는 라우팅 경로를 검색하여 패킷을 유니캐스트 전송한다. 또한, 제2 라우터는 하나 이상의 제1 라우터로부터 유니캐스트 전송된 패킷을 수신하며, 수신한 패킷에 포함된 목적지 위치 정보를 가진 모든 수신 단말기에게 패킷을 멀티캐스트 전송한다.
Abstract:
PURPOSE: A user authentication managing device and a method thereof are provided to communicate a PMIPv6 portability signaling protocol and authentication of next generation network, and to perform signaling protocol and authentication without an additional signaling process. CONSTITUTION: A user profile unit(301) stores a user profile including signaling information of a PMIPv6. A user authentication unit(305) certifies network sues of a mobile terminal with the user profile. When the authentication succeeds, the user authentication unit transmits the user signaling information and an address for the mobile terminal. A location management unit(303) offers location information based on a privacy protecting method requiring location information of the mobile terminal.