Abstract:
본 발명은 무선통신 시스템에서의 IPv6 이웃탐색(Neighbor Discovery) 동작을 지원하는 방법에 관한 것이다. 더 상세히 말하면, 공통적인 네트워크 프리픽스(Prefix)가 할당되는 무선통신 시스템, 특히 IEEE 802.16 이더넷 CS(Convergence Sublayer) 망에서의 IPv6(Internet Protocol version 6) 이웃탐색 동작을 지원하는 방법에 관한 것이다. IP 기반의 무선 접속망을 가지는 이동통신 시스템에서의 기지국(Base Station)이 자신이 서비스하고 있는 단말에 대한 정보를 아이디 캐시 테이블(Identification Cache Table, 이하 "ICT"라 명명함)을 통해 관리하고 이러한 단말의 정보를 기반으로 불필요한 IPv6 이웃탐색 메시지 전송을 제어하는 작업 및 IPv6 이웃탐색 프락시 기능을 수행하는 방법이다. 본 발명에 따르면, 공통적인 네트워크 프리픽스(Prefix)가 할당되는 무선통신 시스템에서 IPv6 이웃탐색 메시지의 전송을 기지국에서 제어함으로써, 무선자원의 낭비 및 단말의 전력낭비를 줄일 수 있는 효과를 얻을 수 있다. 프리픽스, 이더넷 CS, IPv6, 이웃탐색, 멀티캐스트
Abstract:
A handover target network selecting method and a system thereof are provided to perform handover by checking an availability degree of resources of all neighboring candidate networks of a current network which is currently connected by UE. A handover target network selecting method comprises the following steps. A UE(User Equipment) discovers a handover object network to which handover will be executed(S10). The UE selects a handover candidate network from the discovered object network(S11). The UE decides a unique handover target network from the selected candidate network(S12). The UE executes handover to the selected target network(S13).
Abstract:
An IPv6(Internet Protocol version6) support method in a wireless communications system using an extension bridge is provided to control the transmission of a message a multicast address, transmitted to plural IPv6 nodes, as an IP destination address when terminals under an access router share common network prefix information, thereby reducing a waste of radio resources and the power consumption of the terminals. A bridge(200) comprises an ICT(Identification Cache Table) and an ND(Neighbor Discovery) relay agent. The ICT has the MAC(Media Access Code) of each terminal(311,321) connected to the bridge, an identifier for Point-to-Point connection between the bridge and the each terminal, and an IP(Internet Protocol) address and a valid flag value. The ND relay agent generates the ICT information of the terminal based on a neighbor solicitation message for DAD(Duplicate Address Detection) received from the terminal, and checks the duplicate of a random IP address of the terminal to determine the valid flag value. The bridge transmits data having a multicast address, transmitted to all nodes on the same link, as an IP destination address by referring to the ICT.
Abstract:
A method for supporting IPV6 neighbor discovery on a wireless communication system is provided to allow a base station in a mobile communication system having a wireless access network to manage information of subscriber stations through an identification cache table. A method for supporting IPV6 neighbor discovery on a wireless communication system includes a step(S610) of receiving a neighbor solicitation transmitted from a solicitation subscriber station through a solicitation base station to know a media access control address of the subscriber station. It determines whether the base station performs a service for the subscriber station with an identification cache table(S620) or not. If the base station performs the service for the subscriber station, a neighbor advertisement message is transmitted to the solicitation subscriber station through the solicitation base station. The base station which requires neighbor advertisement message receives the neighbor advertisement message from the base station. The solicitation base station transmits the neighbor advertisement message to the solicitation subscriber station.
Abstract:
A mobile internet protocol handover device and a handover emulation method thereof are provided to supplement the time limitation, inconvenience of a manual handover and a superposition area between subnets, when the test network is established as a generic wired network without establishing a wireless connection access network. In the internet network comprised of a mobile terminal supporting a mobile service, a home agent managing the mobile terminal's address and a counter node communicating with the mobile terminal, a mobile internet protocol handover emulator(100) tests the function of mobile internet protocols. The mobile internet protocol handover emulator(100) includes a VLAN switching port and a handover setting unit(130). The VLAN switching port includes a mobile terminal port connected to the mobile terminal through a wired interface and subset ports to assign subsets which the mobile terminal handovers to the respective ports. The handover setting unit(130) assigns the VLAN ID which is the same as the VLAN ID assigned to the subnet ports. In the subnet ports, the subnet is connected to the subnet ports to be moved. The mobile terminal port is assigned to the subnet ports according to user setting handover parameter value.
Abstract:
본 발명은 클라우드 서비스 사업자들의 인프라를 상호 연계시키는 인프라 제공 장치 및 그것의 인프라 연계 방법에 관한 것이다. 본 발명에 따른 서비스형 인프라(Infrastructure as a Service) 시스템의 인프라 제공 장치는 서비스 중개자 및 연계 인프라 제공 장치와 통신적으로 연결되고, 사용자의 지리적 위치에 따라 연계 인프라 제공 장치에게 연계 인프라를 선택적으로 요청하고, 서비스 중개자가 사용자에 의해 요청된 클라우드 서비스를 연계 인프라를 이용하여 제공하도록 연계 인터페이스를 제공한다.
Abstract:
A virtual file system for interworking between a content server and an information based network server according to the present invention includes a file system function processing unit processing a file operation on any content requested from a plurality of content service protocols; a cache control unit managing a cache in a node to process content requested through the file operation; and a protocol matching unit interfacing with a plurality of content transfer protocols to process content requested through the file operation.
Abstract:
Provided is a system capable of controlling each distribution node in a cloud network which is geographically dispersed. According to an embodiment of the present invention, the system is to gather all of event information or programmed information generated in each distribution server into a message queue server, and schedule and control the information in the message queue server, thereby reducing the burden of line extension when a new distribution server is added.
Abstract:
통신망과 방송망 중 어느 하나의 망에 해당하는 제1 망의 핸드오버 제어 장치에서 통신망과 방송망 간의 핸드오버를 수행하는 방법이 제공된다. 핸드오버를 수행하는 방법은 제1 망에서 방송되는 방송 컨텐츠를 제공할 수 있는 제2 망을 검색하는 단계, 제2 망의 핸드오버 제어 장치와 통신망과 방송망 간의 핸드오버 준비 절차를 수행하는 단계, 제2 망의 핸드오버 제어 장치에게 제1 망에서 방송되는 방송 컨텐츠를 전달하는 단계, 그리고 단말에게 제1 망에서 방송되는 방송 컨텐츠를 제2 망을 통해 시청할 것을 요청하는 메시지를 전송하는 단계를 포함한다. 망 단에서 핸드오버 절차가 시작되므로, 복수의 단말에 대한 그룹 핸드오버가 가능하다.