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:
본 발명은 이동성 IPv6 핸드오버에서 망 감지 방법에 관한 것이다. 본 발명에 따르면, 통신망에 포함되는 액세스 포인트에 연결된 이동 단말이 핸드오버되는 경우, 이동 단말의 계층 2에서 감지한 새로운 서브 넷의 정보를 매체독립 핸드오버를 이용하여 이동 단말의 계층 3이 수신하여 이동하고자 하는 서브 넷에 포함되는 액세스 라우터 감지 과정에 소요되는 시간을 감소함으로써 빠르고 효율적인 핸드오버 방법을 제공할 수 있다. 이동 단말, 대응 단말, 매체독립 핸드오버, 액세스 라우터, IPv6
Abstract:
A network sensing method through media independent handover in a mobile IPv6(Internet Protocol version 6) handover is provided to reduce a time for handover by previously performing a router detection process. A mobile terminal senses an access router included in a subnet from the layer 2 of the mobile terminal(S200). The information of the access router is received through the layer 3 lice media independent hand over of the mobile terminal(S210). The information of the subnet is received through the layer 3 phase shifter media independent handover of the mobile terminal from the access router(S240). According to the layer 2 phase shifter subnet information of the mobile terminal, the mobile terminal performs handover(S260).
Abstract:
A hardware binding cache apparatus for tunneling packets of mobile terminals in a large-sized home agent router and a method thereof are provided to speedily and effectively process packets of mobile terminals by constructing various information, such as forwarding information, BC(Binding Cache) information, and NH(Next Hop) information, necessary for packet processing in the hardware of line cards and processing packets of mobile terminals in a hardware way using the constructed information. An IPv6 routing system(110) having a home agent function comprises a system card(112), an application card(113), a plurality of line cards(114-1-114-N), and a fabric card(115). The system card(112) manages the state of the IPv6 routing system(110), and covers various functions related to operation. The application card(113), operated by the routing protocol of the IPv6 routing system(110), manages routing information in a routing system having a distributed structure, interface information, and mobility-associated information. Each of the line cards(114-1-114-N), having a hardware control function and hardware table information, processes an incoming packet using the hardware table information, searches for a line card to which the incoming packet will be delivered, creates it into a new packet, and provides it to the searched line card. The fabric card(115) takes charge of a packet switching function to its internal data network which can connect the line cards.
Abstract:
A method for constructing IPv6(Internet Protocol version 6) forwarding and external interface information in a distributed IPv4-based router is provided to allow an IPv4 router to add an IPv6 function by upgrading software to thus provide an IPv6 forwarding service. When a line card is initially driven in a distributed IPv4-based router, initial IPv6 forwarding information and initial interface address information are set to synchronize an operation state of the initially driven line card to that of a different line card already existing in the router. When new IPv6 forwarding information is generated in the operation state, the new forwarding information is constructed in a kernel or an internal memory of the line card. When the interface address and the information with an external network of the router are changed by an operator of the router, the changed items are constructed in the kernel or the internal memory.
Abstract:
PURPOSE: A connection identifier interworking apparatus in an ATM switching system and a method therefor are provided to solve a problem of a traffic manager restricted in a range of VPI(Virtual Path Identifier) and VCI(Virtual Channel Identifier) fields by allowing the traffic manager to use a connection identifier created with VPI and VCI. CONSTITUTION: An origination OAM processor(521) generates an origination connection identifier(In_Contag) by using an input physical link number and an input VPI(In_VPI)/input VCI(In_VCI), converts a VPI field into '0' and VCI field into an origination connection identifier, and then, sends a cell to an origination traffic manager(522). Since the outputted cell is inputted to a destination traffic manager of a different giga-bit matching module through a switch module, the origination traffic manager(522) leaves the VPI field as '0' as it is, converts the VCI field from the origination connection identifier(In_Contag) into a destination identifier(Out_Contag), and then, transfers the cell to a switch matching unit(525).
Abstract:
PURPOSE: A congestion information relay method of a binary feedback switch for an ABR(Available Bit Rate) service is provided to rapidly relay not only congestion information of a current switch but also congestion information transmitted from a front end switch to a lower end switch without a queuing delay. CONSTITUTION: If a data cell is transmitted from a front end switch(S41), a system checks an EFCI(Explicit Forward Congestion Indication) bit of the data cell(S42). If the EFCI bit is '1', the system sets up a relayed EFCI flag as '1'(S43). The system resets the EFCI bit of the data cell in order to prevent the same congestion information from being transmitted twice(S44). If the EFCI bit is '0', the system sets up the relayed EFCI flag as '0'(S45).
Abstract:
PURPOSE: A method for allocating a connection speed in an ATM(Asynchronous Transfer Mode) switching system and a method for measuring a switch load using the same are provided to correctly allocate speed values by connections capable of being applied by a switch network, so as to control inner stream. CONSTITUTION: A speed controller(216) of a traffic control unit(21) measures an SLM(Switch Load Measurement), in order to allocate a connection speed value from a reverse test cell received through a switch network(31). The speed controller(216) manages the measured SLM and a previous value, to allocate a correct connection speed value for the application of the switch network(31) without congestion. The speed controller(216) decides a scheduling speed and an ER(Explicit Rate) flown in the switch network(31), according to states of a connection buffer(212).
Abstract:
1. 청구범위에 기재된 발명이 속한 기술분야 본 발명은 비동기 전달 모드 교환기의 내부 라우팅 방법에 관한 것임. 2. 발명이 해결하려고 하는 기술적 과제 본 발명은, 비동기 전달 모드 교환기의 여러 신호 계층간의 신호 메시지 전달 방법을 단순화하고, 성능을 도모하며, 부하를 균형있게 배분하고, 망 구성의 유연성을 유지하기 위한 비동기 전달 모드 교환기의 내부 라우팅 방법을 제공하고자 함. 3. 발명의 해결방법의 요지 본 발명은, 접속 교환 서브 시스템내에서 호 접속 제어 프로세서 주소로 신호 메시지를 전송하는 단계와, 신호 비동기 전달 모드 적응 계층 주소 테이블을 수신하고, 신호 링크를 선택하며, 주소를 구한 후에, 구해진 주소로 전송하는 단계, 및 상기 신호 비동기 전달 모드 적응 계층은 신호 메시지를 수신하면, 주소를 계산하고, 계산된 주소로 신호 메시지를 전송하는 단계를 포함한다. 4. 발명의 중요한 용도 본 발명은 비동기 전달 모드 교환기의 내부 라우팅에 이용됨.