Abstract:
A method for processing handover in a bridge-based RAS(Radio Access Station) backbone network is provided to easily and simply manage a RAS backbone network using a 2-layer ethernet bridge, to efficiently and speedily process handover, and to improve the efficiency of the RAS backbone network. Receiving a disconnection report message, based on handover, from an MN(Mobile Node), an existing SCB(Site Core Bridge) directs SCBs, located at the end of an existing MAC-in-MAC tunnel, to delete tunnel information and associated MN information(0,1). Afterwards, the existing SCB informs an HLR that the MN has initiated handover, and the HLR changes the operation state of the MN from "active" to "handover"(2). The MN moves to a new BSB(Base Station Bridge)(3). Meanwhile, the fourth SCB discards a frame received on the move of the MN as information about the MN has been already deleted(4). In this case, the fourth SCB discards the frame while querying the HLR about the location information of the MN(5). If the movement to the new BSB is completed, the MN executes registration procedures. At this moment, the MN transmits a route update message, including its own MAC address and IP address, to the new BSB so that it can be forwarded to a new SCB.
Abstract:
본 발명은 다수의 무선 기지국과 연결되며 2계층 스위치로 구성되는 브리지인 다수의 BSB(BaseStation Bridge)와, 망을 구성하는 브리지 중에서 코어(core) 망을 구성하는 2계층 스위치로 구성되는 브리지인 다수의 SCB(Site Core Bridge)를 포함하는 브리지 기반 무선 기지국 기간망에서의 신호 처리 방법에 있어서, 각 SCB는 크로스오버 브리지로 동작시에 미리 설정된 개수의 최근 송신 완료한 프레임을 보관하는 과정과, 핸드오버완료 신호가 수신될 경우에, 상기 보관한 송신완료한 프레임 중 선택된 프레임을 재전송하는 과정을 수행한다. 이더넷, 브리지, 핸드오버, 프레임 손실
Abstract:
A system of a bridge-based cellular Ethernet network and a handover processing method thereof are provided to reduce handoff delay of an MN(Mobile Node) up to a physical connection delay level, and to prevent lost frames during handover, thus efficient and fast handover can be carried out, consequently network efficiency is improved. An HLR(Home Location Register)(24) manages configuration information of network components. Plural BSBs(Base Station Bridges)(22) consist of 2-layer switches in connection with plural wireless base stations. Plural SCBs(Site Core Bridges)(23-1,23-4) are connected with a portion of the BSBs(22), deliver frames in MAC(Medium Access Control)-in-MAC manners, and transmit frames to an SCB of a site to which a destination MN belongs by confirming the destination MN whose communication is demanded by an MN within a self site through the HLR(24).
Abstract:
A bridge-based RAS(Radio Access Station) backbone network system and a method for processing signals therein are provided to prevent a loss of on-the-fly frames in a soft handover by constructing a RAS backbone network using a 2-layer Ethernet bridge. If the first MN(Mobile Node)(MN1) in the first site completes handover as the first MN moves to the third site and forms a link with a BSB(Base Station Bridge)(22) in the third site, the first MN generates a handover complete signal. The handover complete signal is transmitted to the fourth SCB(Site Core Bridge)(23-4) through the third SCB(23-3). In this case, the fourth SCB(23-4), which is a crossover bridge, receives the handover complete signal, buffering frames 0 through 2. Then the fourth SCB(23-4) retransmits the frames to the third SCB(23-3). At this moment, even though frame #2, which is an on-the-fly MAC frame, is missing, the second MN(MN2) can receive frame #2 as frames 0 through 2, which are retransmitted, are received.
Abstract:
A bridge-based radio access station backbone network system and a signal processing method thereof are provided to simplify network management, to make it possible to perform efficient and rapid handover and to enhance network efficiency. A bridge-based radio access station backbone network system comprises plural BSBs(Base Station Bridges)(22), plural SCBs(Site Core Bridges)(23-1-23-4) and an HLR(Home Location Register)(24). The BSBs(22) composed of two layered switches are connected to plural radio base stations. The plural SCBs(23-1-23-4) also composed of two layered switches are connected to a part of the plural BSBs(22), transmits frames between each other by an MAC(Media Access Control)-in-MAC scheme and forms a core network among bridges forming a network. The HLR(24) stores an IP address and an MAC address of a terminal within a network, and an address of an SCB to which a corresponding terminal is affiliated. Each of the SCBs(23-1-24-1) fixedly gets an MAC address of an external default router for relaying egress frames, fixedly preregisters an individual MAC address of its own at other SCB existing at the core network, and transmits frames to an address of an SCB to which a corresponding terminal is affiliated or an address of the external default router by checking a destination terminal with which a terminal within its site requests to communicate via the HLR(24).
Abstract:
본 발명은 네트워크 트래픽 분산 방법 및 이를 이용하는 네트워크 시스템에 관한 것이다. 이러한 본 발명의 네트워크 트래픽 분산 방법은, 루트 브리지로 향하는 최단거리의 경로를 가지는 루트 포트, 특정한 링크에서 루트 브리지로 향하는 경로에서 처음으로 거치는 데지그네이티드 포트, 수신되는 경로 비용보다 다른 브리지로부터 수신한 루트 경로 비용이 더 적어서 차단된 대체 포트를 포함하는 브리지가 프레임의 트래픽 양을 검사하여 일정값 이상인지 여부를 확인하는 단계; 상기 트래픽 양이 일정값 이상일 경우, 상기 프레임이 상기 브리지에 직접적으로 접속되도록 형성된 에지 포트로부터 전달된 프레임인지 여부를 확인하는 단계; 및 상기 프레임이 에지 포트로부터 전달된 경우, 상기 프레임을 상기 대체 포트로 출력하는 단계;를 포함하는 것을 특징으로 한다. 네트워크, STP, RSTP, 대체 포트, 루트 포트, 데지그네이티트 포트
Abstract:
PURPOSE: A battery remaining indicating method and terminal device applying the same are provided to modify the error of battery remainder due to voltage drop. CONSTITUTION: An image analysis unit analyzes a histogram of an image frame. The image analysis unit confirms a brightness value of the image frame(510). A control unit confirms the power consumption of a self-luminescence display according to the brightness of the image frame(520). The control unit compensates voltage drop which is generated on the self-luminescence display.
Abstract:
본 발명은 표시부에 인물 사진을 표시하는 방법에 있어서, 영상의 촬영 정보를 확인하여 영상이 인물을 촬영한 영상인지 판단하는 과정과, 영상이 인물을 촬영한 영상인 것으로 판단된 경우, 영상에서 얼굴 검출을 수행하는 과정과, 얼굴 검출 결과를 이용하여 영상에서 인물 영역을 설정하는 과정과, 표시부를 통해 인물 영역을 확대하여 표시하는 과정을 포함한다. 카메라, 표시부, 인물사진, Exif, 얼굴 검출