Abstract:
PURPOSE: A portable terminal and method thereof are provided to successively offer packet services by preventing home IP(Internet Protocol) from being changed in a physical interface by using a logical interface. CONSTITUTION: A physical interface unit(130) includes plural physical interfaces(132,134) for plural wireless network connections. A logical interface unit(120) allocates one home IP(Internet Protocol) address to the physical interfaces in order to process packets by using the home IP address. The logical interface unit processes the packet in order to transmit and receive a packet which constructs one session through the physical interface.
Abstract:
네트워크 기반 이동성을 지원하기 위한 엑세스 게이트웨이 간 정보 교환 방법이 개시된다. 이동 단말이 제1 엑세스망에서 제2 엑세스 망으로 이동한 경우 네트워크 기반 이동성을 지원하기 위한 시스템에서 엑세스 게이트웨이 간 정보 교환 방법에서 제2 엑세스망의 제2 엑세스 게이트웨이는 라우터 요청메시지를 수신하여 이동 단말이 해당 영역 내에 진입한 것을 파악하고, 이웃한 제1 엑세스망의 제1 엑세스 게이트웨이로 이동 단말의 프로파일 요청 메시지를 전송한다. 그러면, 제1 엑세스 게이트웨이가 이동 단말의 프로파일 요청 메시지에 따른 이동 단말의 사용자 프로파일, QoS 프로파일, 서비스 프로파일 및 인증 프로파일 중 적어도 하나를 포함하는 프로파일 응답 메시지를 전송하여 응답한다. 그리고, 제2 엑세스 게이트웨이가 프로파일 응답 메시지를 수신하면 프록시 바인딩 정보를 갱신하여 LMA 간의 양방향 터널을 생성하고, 라우터 요청 메시지에 대응하는 라우터 응답을 수행한다. 엑세스 게이트웨이, LMA, 프로파일, 이동성
Abstract:
PURPOSE: A smart delineation router and a flow information transfer method using the same are provided to manage the traffic by using the flow information in the delineation router. CONSTITUTION: A traffic analysis part(102) receives and analyzes the traffic management policy including the routing policy of network and the QoS policy of network received from a router locating in the boundary of the network. A flow conversion unit(106) receives a plurality of flows from the specific network. A flow conversion unit converts the received flow to meet for the traffic management policy of the destination location network in which the flow will be transmitted. A flow processing unit(108) transmits the converted flow through the flow control protocol to the destination location network.
Abstract:
본 발명은, 3GPP 기반 차세대 이동통신망에서의 SCTP 시그널링을 이용한 IP 이동성 제공 방법에 관한 것으로서, 통합 게이트웨이와 각 기지국 간, 각 기지국들 간에 사용되는 인터페이스 프로토콜의 SCTP 계층 상에 IP 이동성 프로토콜을 구축하고, IP 이동성 프로토콜에서 이동 단말과 망의 바인딩을 위한 시그널링 메시지를 생성하고, 시그널링 메시지의 적어도 일부를 포함시켜 SCTP 패킷을 생성하며, SCTP 패킷을 전송하여 이동 단말과 망의 바인딩을 갱신한다. 이에 의해, 이동 단말과 망에서 IP 이동성의 구현을 위한 망 관련 장비와 이동 단말의 설계 및 구현을 효율적으로 수행할 수 있으며 불필요한 오버헤더를 차단할 수 있다. 3GPP, IP, 이동성, SCTP, 시그널링, PBA, PBU
Abstract:
PURPOSE: A method and an apparatus for FMIPv6(Fast Mobile Internet protocol version 6) handover in an UMTS(Universal Mobile Telecommunications System) network are provided to support efficient hand over by using MIH(Media Independent Handover) service in the UMTS network. CONSTITUTION: The present RNS(Radio Network Subsystem) transmits layer 2 information to a mobile terminal(S205). The mobile terminal confirms layer 3 information about target GGSN from the present GGSN(Gateway GPRS Support Node)(S215). The present RNS determines target RNS for hand over(S220). The mobile terminal set a tunnel between the present GGSN and target GGSN(S235). The mobile terminal transmits an UNA(Unsolicited Neighbor Advertisement) message to the target GGSN(S250). The mobile terminal receives packet data from the target GGSN(S260).
Abstract:
PURPOSE: An operating control method of traffic and an apparatus thereof are provided to in order to dynamically control a P2P traffic according to a network load amount. CONSTITUTION: A flow management unit(130) separately stores a flow of a packet for P2P to a second flow management table according to a classification result of a packet classification unit. The flow management unit manages and controls the flow stored to the second flow management table or a first flow management table. A traffic control unit(170) senses a load quantity of a network. The traffic control unit controls the traffic about the packet for the P2P.
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:
A method and a system for providing multimedia service using an IP(Internet Protocol) network are provided to set profiles of multimedia service in advance to offer the multimedia service to a subscriber prior to general Internet service. A channel profile including band information of each channel of multimedia service provided through an IP network and a subscriber profile including the number of channels simultaneously viewable by a subscriber and information on the entire band used by the subscriber are stored in a database. The entire band of channels watched by the subscriber is checked based on the channel profile and the band of Internet service through the IP network is set as a band other than the entire band.
Abstract:
A method for providing network time of a line card by using a timestamp of a micro engine is provided to reduce a time error for forming the network time by the timestamp, by periodically correcting the relative time among the line cards connected to a statistical measurement server. A network system comprises an NTP(Network Time Protocol) server, a statistical measurement server for gathering statistics of packets and collecting measurement data, and multiple line cards for transmitting and receiving packet and control information to/from the statistical measurement server. A method for providing network time of the line card in the network system is composed of steps for receiving the packets from customers in each line card(S204); including a timestamp value provided from a micro engine embedded in each line card, to the received packet(S206); transmitting the packet to the statistical measurement server(S208); and obtaining the timestamp value included in the packet, in the statistical measurement server and setting the obtained timestamp value as the network time of the correspondent line card(S210).
Abstract:
A device and a method for upgrading a system using a 2-step bootloader are provided to minimize user interference and use of a non-volatile memory when a bootloader, an OS, or an application program of an embedded system is upgraded, and perform upgrade again even if a fatal error is generated during the upgrade. The first bootloader(111) has a hardware POST(Power-On Self-Test) function and a function for setting a communication interface(120) with an external server(130) for initial system operation of the embedded system(100). The second bootloader(112) has the function for loading a kernel for executing the OS of the embedded system. If the system upgrade is needed, the first bootloader performs the system upgrade by receiving a new system image from the external server connected through the communication interface. The new system image includes at least one of the second bootloader, the kernel(113), and the application program(114).