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    COMMUNICATIONS SYSTEM
    1.
    发明公开
    COMMUNICATIONS SYSTEM 有权
    KOMMUNIKATIONSSYSTEM

    公开(公告)号：EP2384071A1

    公开(公告)日：2011-11-02

    申请号：EP09834290.0

    申请日：2009-11-13

    申请人： NEC Corporation

    发明人： KANAI, Taiki ,  SAKURAI, Akira ,  YAMASHITA, Atsuya ,  NAKAJIMA, Hiroaki

    IPC分类号： H04W72/04 ,  H04L29/00

    CPC分类号： H04W28/065 ,  H04L45/46 ,  H04L47/17 ,  H04L49/252 ,  H04L49/901 ,  H04W28/08

    摘要： This communication system is equipped with a plurality of transceiver devices each composed of a transmission device that transmits unit data and a reception device that receives unit data from the transmission device. The transmission devices are connected in series. Each of the transmission devices stores identification information for identifying the device itself. The transmission device accepts unit data from a front stage side. The transmission device generates identification information for identifying one of the transmission devices from information included in the accepted unit data, in accordance with a predetermined generation process. In a case that the generated identification information corresponds to the stored identification information, the transmission device transmits the accepted unit data to the reception device. In a case that the generated identification information does not correspond to the stored identification information, the transmission device sends the accepted unit data to a back stage side.

    摘要翻译： 该通信系统配备有各自由发送单元数据的发送装置和从发送装置接收单位数据的接收装置构成的收发信机装置。 传动装置串联连接。 每个传输设备存储用于识别设备本身的标识信息。 传输设备接受来自前级侧的单元数据。 发送装置根据预定的生成处理，从包含在所接受的单位数据中的信息生成用于识别发送装置之一的识别信息。 在所生成的识别信息对应于所存储的识别信息的情况下，发送装置将接受的单位数据发送到接收装置。 在所生成的识别信息与存储的识别信息不对应的情况下，发送装置将接受的单位数据发送到后台侧。

    DATA TRANSFER DEVICE
    4.
    发明公开
    DATA TRANSFER DEVICE 有权
    数据传送装置

    公开(公告)号：EP2378715A1

    公开(公告)日：2011-10-19

    申请号：EP09833120.0

    申请日：2009-11-13

    申请人： NEC Corporation

    发明人： YAMASHITA, Atsuya ,  MIENO, Tsutomu ,  NAKAJIMA, Hiroaki ,  SAKURAI, Akira

    IPC分类号： H04L12/44

    CPC分类号： H04L49/10 ,  H04L45/026 ,  H04L45/22 ,  H04L45/245 ,  H04L45/28 ,  H04L47/10 ,  H04L47/12 ,  H04L49/25 ,  H04L49/503 ,  Y02D50/30

    摘要： A data transfer device 210 is equipped with a plurality of communication ports 211a and 211b, a communication establishment processor 212, and a communication maintenance processor 213. The communication establishment processor 212 transmits and receives communication establishing information for establishing communication with an external device connected via the communication port to and from the external device. The communication maintenance processor 213 is configured to operate independently of the communication establishment processor 212 and, every time a predetermined transmission period elapses, transmits communication maintaining information for maintaining the establishment of communication with the external device, to the external device. In a state that communication with a plurality of external devices via the plurality of communication ports is established, the data transfer device 210 transmits data received from one of the plurality of external devices to the other one of the plurality of external devices.

    SWITCHING DEVICE, HIGHER-ORDER DEVICE THEREOF, NETWORK AND PACKET TRANSFER METHOD
    5.
    发明公开
    SWITCHING DEVICE, HIGHER-ORDER DEVICE THEREOF, NETWORK AND PACKET TRANSFER METHOD 审中-公开
    控制设备，设备高阶保证网络以及分组发送及其方法

    公开(公告)号：EP2654255A1

    公开(公告)日：2013-10-23

    申请号：EP11849882.3

    申请日：2011-12-14

    申请人： NEC Corporation

    发明人： YAMASHITA, Atsuya

    IPC分类号： H04L12/56 ,  H04L12/46

    CPC分类号： H04L45/745 ,  H04L49/10

    摘要： A switching device that, despite its simplified configuration, implements packet forwarding based on an IP address, in particular a multicast IP address, is disclosed. The switching device includes a plurality of input/ output ports, a forwarding table that correlates the IP address with the port via which a packet having the IP address as a destination is to be output, and a packet send/ receive controller. The packet send/ receive controller references the forwarding table to forward a received packet via the port correlated with the destination IP address of the received packet. The packet send/ receive controller updates the forwarding table as to a source IP address of the received packet and as to a port that received the packet. A plural number of ports may be correlated with a single IP address in the forwarding table. In case the plural number of the ports are correlated with the single IP address, the packet send/ receive controller forwards the received packet via the correlated plural number of the ports.

    摘要翻译： 所述的开关装置，尽管其简化的结构，基于IP地址执行数据包转发，特别是多播IP地址是游离缺失盘。 开关装置包括输入/​​输出端口复数，一个转发表做相关经由其中具有IP地址作为目的地的分组是要被输出的端口的IP地址，以及分组发送/接收控制器。 分组发送/接收控制器引用转发表经由与接收的分组的目的地IP地址相关联的端口来转发接收到的分组。 分组发送/接收控制器更新转发表接收到的数据包的源IP地址和一个端口没收到的数据包。 端口的多个数目可以与在转发表中的单个IP地址相关联。 如果端口的数目的多个与所述单个IP地址相关联，该数据包发送/接收控制器转发经由端口的相关复数所接收的分组。

    NETWORK SYSTEM
    6.
    发明公开
    NETWORK SYSTEM 审中-公开
    网络系统

    公开(公告)号：EP2448179A1

    公开(公告)日：2012-05-02

    申请号：EP10791803.9

    申请日：2010-06-14

    申请人： NEC Corporation

    发明人： YAMASHITA, Atsuya ,  KUROSAKI, Shinya ,  ISHIKURA, Satoshi ,  NAKAJIMA, Hiroaki

    IPC分类号： H04L12/28

    CPC分类号： H04L12/462 ,  H04L41/0668 ,  H04L43/0811 ,  H04L69/40

    摘要： A link control function unit 506 of a device 500 notifies a counterpart device 600 of a line in which a link disconnection occurs among lines 508 to 510 and L500 terminated at line terminals 501 to 503 or a lower stage line terminal 504 of the self device 500 and the cause of the link disconnection is not a forcible closure of a line terminal of the self device. Further, the link control function unit 506 does not forcibly close the lower stage line terminal 504 of the self device 500 if a line in which a link disconnection occurs, notified from the counterpart device 600, is a line terminated at a lower stage line terminal 604 of the counterpart device 600.

    摘要翻译： 装置500的链路控制功能单元506向终端装置600通知在终端501至终端503或终端500中的线路508至510和L500中发生链路断开的线路或本装置500的下级线路终端504 并且链路断开的原因不是强制关闭自身设备的线路终端。 此外，如果从对方装置600通知的发生链路断开的线路是在下级线路终端终止的线路，则链路控制功能单元506不强制关闭自装置500的下级线路终端504 对方设备600的604。