Abstract:
PURPOSE: A sensor node and routing method are provided to reduce the broadcasting number of routing information by improving the efficiency of routing information broadcasting. CONSTITUTION: When routing information is received, a routing information collection unit(120) collects routing information which is received during a waiting time. A node selection unit(130) collects one or more routing information received during the waiting time when the waiting time is finished. The node selection unit selects an optimized parent node. A routing information dividing unit(100) divides routing information to a preamble size. The routing information dividing unit transmits the divided routing information to other node.
Abstract:
A path setting method of a complex switch which provides real time mobility of an IP address and a telephone number are provided to enable a telephone terminal and an IP terminal to use an existing intrinsic address system when the IP terminal and the telephone terminal moves to a network area having a different number system. A mute detection unit detects a mute period(S402). An IP(internet Protocol) terminal detects a CoA(Care of Address) that a complex switch sends during the mute period(S404). The IP terminal transmits a registration request message to the complex switch(S405). It is determined whether information that the complex switch sends is a registration response message(S406). When the information that the complex switch sends is not the registration response message, an operation state of a general IP terminal is maintained(S408).
Abstract:
A wireless network system and an IP(Internet Protocol) handoff processing method thereof are provided to process handoff by separating a data packet path between mobile nodes from a handoff packet path of a mobile node. Plural mobile agents(102-A~102-n) respectively have wireless network areas(101-A~101-n), and are operated as home agents for a mobile node(103) subscribed in a service. The mobile agents are operated as foreign agents for a mobile node which is subscribed in a service of the other mobile agent and moved to a network area of the mobile agents. The mobile agents transmit data between a mobile node and a counterpart node(108). A mobile agent platform(104) configures a signal path for handoff processing of a mobile node and the plural mobile agents through an HAAP(High-Altitude Aeronautical Platform)(105). The mobile agent platform relays a handoff registration request and a handoff registration replay message between a mobile agent operated as a home agent and a mobile agent operated as a foreign agent with respect to a mobile node through the HAAP.
Abstract:
본 발명은 1 기가비트 이더넷 스위치의 기본적인 프레임 규격은 유지하면서 물리 계층의 전송 속도 및 패킷 처리 성능을 10 기가비트로 향상시킬 수 있는 10기가비트 이더넷 회선 정합 장치 및 그 제어 방법에 관한 것이다. 본 발명은 1기가비트 이더넷 회선 정합 유니트와, 스위치 패브릭 유니트와, 주 프로세서 유니트를 포함하는 10 기가비트 이더넷 에지 스위치에 있어서, 상기 스위치 패브릭 유니트와 연결되는 N 개의 네트워크 프로세서와, 상기 N 개의 네트워크 프로세서와의 사이에 1 기가비트 이더넷 표준 GMII 인터페이스와 10 기가비트 이더넷 표준 XGMII 인터페이스를 제공하는 프레임 다중화 및 역다중화부와, 상기 프레임 다중화 및 역다중화부에 연결되어, XGMII 및 XAUI 인터페이스를 지원하며, 10 기가비트 전송 거리를 연장하는 10기가비트 확장 부계층 처리부와, 10 기가비트 광 인터페이스를 지원하도록 표준 패키지 광 모듈로 구성한 10 기가비트 이더넷 물리계층 처리부와, 상기 10기가비트 확장 부계층 처리부와 10기가비트 이더넷 물리계층 처리부를 제어하는 10기바� �트 물리층 제어부와, 10 기가비트 이더넷 회선 정합 유니트를 제어하기 위한 회선 정합 제어부와, 주 프로세서 유니트와 IPC 기능을 수행하여 제어 및 상태 정보를 교환하고, N 개의 네트워크 프로세서를 구동하며, 포워딩 테이블 관리기능 및 트래픽 관리 기능을 수행하는 라인 프로세서로 구성된다. 상기 구성에 의하여 본 발명은 프레임의 기본 규격에 변경없이 1기가비트 회선과 10기가비트 회선의 정합을 가능하게 하는 효과를 제공한다.
Abstract:
The present invention provides an Ethernet switching apparatus using frame multiplexing and demultiplexing. The Ethernet switching apparatus has a plurality of frame demultiplexers, a plurality of frame multiplexers and a switch fabric chip set. The frame demultiplexers convert at least one 10 gigabits Ethernet frame into a plurality of gigabit Ethernet frames. The frame multiplexers convert a plurality of gigabit Ethernet frames into at least one 10 gigabits Ethernet frame. The switch fabric chip set is provided with input and output interfaces using the GMII, and is connected to the frame demultiplexers and the frame multiplexers in the GMII format. The switch fabric chip set outputs frames through an arbitrary usable one of a plurality of GMII ports connected to a corresponding frame multiplexer if the frames are transmitted to the corresponding frame multiplexer.
Abstract:
PURPOSE: An input control device and method in a packet switch system is provided to increase the usability of a network system and improve the performance of a high-speed packet switch system, without the necessity of increasing internal operation speed, by fairly switching packets according to the priority order. CONSTITUTION: An input control device and method in a packet switch system is composed of the first demultiplexer(4200), the first and second control parts(4210,4220), the first and second multiplexers(4270a,4270b), a port selection control part(4280), and the third multiplexer(4290). The first demultiplexer(4200) divides inputted packets into unicast packets and multicast or broadcast packets and outputs the divided packets to the first and second control parts(4210,4220). The first control part(4210) consists of the second demultiplexer(4231a) and the first and second storage parts(4240a,4240b). The second demultiplexer(4231a) separates the unicast packets inputted from the first demultiplexer(4200) into real-time traffics and non-real time traffics. The first and second storage parts(4240a,4240b) classify the real-time and non-real time traffics outputted from the second demultiplexer(4231a) by output ports and outputs them selectively. The second control part(4220) is composed of a selector(4232), the third demultiplexer(4231b), the third and fourth storage parts(4250a,4250b), and the fifth and sixth storage parts(4260a,4260b). The first multiplexer(4270a), connected to the first storage part(4240a) and the fifth storage part(4260a), selects the real-time traffics outputted from the first storage part(4240a) and the fifth storage part(4260a). The second multiplexer(4270b), connected to the second storage part(4240b) and the sixth storage part(4260b), selects the non-real time traffics outputted from the second storage part(4240b) and the sixth storage part(4260b). The third multiplexer(4290) selects one between the real-time packet outputted from the first multiplexer(4270a) and the non-real time packet outputted from the second multiplexer(4270b) and transfers it to a switch fabric. The port selection control part(4280) executes communication for the port arbitration of a crossbar scheduler in the switch fabric.
Abstract:
PURPOSE: An ethernet switching apparatus and method using frame multiplexing are provided to reduce a cost by using a general giga-bit switch chip set and a standard interface in a multiplexer and a demultiplexer. CONSTITUTION: Switch fabric chip set(450) includes a standard interface GMII consisting of a GbE MAC(451), a GbEFE(Gigabit Ethernet Forwarding Engine)(452), a cross-bar switch(453) and a GbE MAC(454,454-11,454-1N,454-m1,454-mN). GbE PHYs(470-1,470-k) are transmission blocks and GbE PHYs(460-1,460-k) are receiving blocks. XGbE PHYs(440-1,440-m) are transmission blocks and XGbE PHYs(410-1,410-m) are receiving blocks. Frame_DEMUXs(430-1,430-m) demultiplex 10-giga ethernet frame coming through an XGMII(404) to a giga-bit ethernet frame and transmit it to the switch fabric chip set(450) through a GMII(403). Frame_MUXs(420-1,420-m) multiplex the giga-bit ethernet frame coming through the switch fabric chip set(450) to a 10 giga-bit ethernet frame and transmit it to XGbE PHYs(410-1,410-m) through an XGMII(401).
Abstract:
본 발명은 가변 길이(variable-length)의 고속 패킷(high-speed packet)을 다중화하고 역다중화하는 방법 및 장치에 관한 것으로, 특히 다수의 1기가비트 이더넷 프레임(1 gigabit ethernet frame)을 하나의 10기가비트 이더넷 프레임(10 gigabit ethernet frame)으로 다중화(multiplex)하고 반대로 역다중화(demultiplex)하는 방법 및 장치에 관한 것이다. 이러한 방식은 가변 길이의 고속 패킷을 단순한 시분할 다중화(TDM) 방식이 아닌 패킷 다중화(packet multiplexing) 방식을 사용하고 출력 대역폭(output bandwidth)보다 입력 대역폭(input bandwidth)을 크게 함으로써 통계적 다중화(statistical multiplex) 효과를 지니며 또한 입력과 출력 인터페이스 방식에 표준 인터페이스를 사용함으로써 기존의 범용 칩(chip)들을 사용할 수 있는 효과가 있다.
Abstract:
Provided is a method and apparatus for assigning an Internet Protocol (IP) address using agents in a zero configuration network. The IP address assignment method involves: (a) receiving a registration request message of a user computer which contains a home agent IP address, and the ID and password of the user computer; (b) transmitting to the user computer an encoded address answer message which indicates permission of the address registration; and (c) setting up a network environment in the user computer by decoding the encoded address answer message. Problems of mobile IP extensibility and a dynamic host configuration protocol (DHCP) authentication are solved by applying the concept of a mobile Internet protocol agent to the protocol in a zero configuration network.
Abstract:
PURPOSE: A wireless LAN(Local Area Network) AP(Access Point) connection device is provided to efficiently operate a system by performing a MAC(Media Access Control) function. CONSTITUTION: A wireless module interface unit(408) provides an interface with a wireless LAN AP function unit(421) which performs a MAC with respect to a plurality of media. A control processor(410) connects to the wireless module interface unit(408), and controls and manages a main processor(423) which supports a wired speed in a system. The control processor(410) performs the MAC function of the wireless LAN AP function unit(421). The wireless module interface unit(408) connects to the control processor(410) through a PCI(Peripheral Component Interconnect) bus(409).