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    Method of accessing communication channel of network including a plurality of stations
    3.
    发明专利
    Method of accessing communication channel of network including a plurality of stations 有权
    访问包含多个站点的网络通信信道的方法

    公开(公告)号：JP2008252925A

    公开(公告)日：2008-10-16

    申请号：JP2008130377

    申请日：2008-05-19

    申请人： Itran Communications Ltd ,  イトラン コミュニケーションズ リミテッド

    发明人： RAPHAELI DAN ,  MUSHKIN MORDECHAI ,  GAZIT RONEN ,  KACEN YAEL ,  EREZ AMIR

    IPC分类号： H04L12/28 ,  H04B3/54 ,  H04B3/58 ,  H04L1/00 ,  H04L1/16 ,  H04L1/18 ,  H04L12/413 ,  H04L12/56

    CPC分类号： H04B3/58 ,  H04B3/542 ,  H04B2203/5408 ,  H04L1/0002 ,  H04L1/0007 ,  H04L1/0021 ,  H04L1/16 ,  H04L1/18 ,  H04L1/1848 ,  H04L12/413 ,  H04L2001/0093 ,  H04W74/08 ,  H04W76/02

    摘要： PROBLEM TO BE SOLVED: To provide a method of accessing a communication channel of a network including a plurality of stations. SOLUTION: A method of accessing a communication channel of a network including a plurality of stations includes: a step of setting a contention window where a plurality of stations contend for access to the communication channel; a step of allocating prioritys to the contention window; a step of initializing a back-off counter with a back-off count equal to the number of back-off time slots of a random number; a step of waiting until the arrival of the contention window having priority corresponding to the transmission priority of a specified station; a step of subtracting from the back-off counter during a channel is unused; a step of attempting the reservation of the communication channel after the back-off counter is terminated; and a step of adjusting a size of the contention window as a function of the number of the plurality of stations which contends for the communication channel in the contention window. COPYRIGHT: (C)2009,JPO&INPIT

    摘要翻译： 要解决的问题：提供一种访问包括多个站的网络的通信信道的方法。 解决方案：一种访问包括多个站的网络的通信信道的方法包括：设置多个站竞争访问通信信道的竞争窗口的步骤; 向竞争窗口分配优先级的步骤; 以等于随机数的退避时隙数的退避计数来初始化退避计数器的步骤; 等待竞争窗口到达具有与指定站的传输优先级对应的优先级的步骤; 在通道期间从退避计数器中减去的步骤未被使用; 在退避计数器终止之后尝试预留通信信道的步骤; 以及根据在竞争窗口中与通信信道竞争的多个站的数量的函数来调整争用窗口的大小的步骤。 版权所有（C）2009，JPO＆INPIT

    Communication system
    4.
    发明专利
    Communication system 审中-公开
    通讯系统

    公开(公告)号：JP2005354635A

    公开(公告)日：2005-12-22

    申请号：JP2004176073

    申请日：2004-06-14

    申请人： Sumitomo Electric Ind Ltd ,  住友電気工業株式会社

    发明人： MATSUO TAKASHI ,  KAWAMOTO KOJI ,  HIROTSU KENICHI ,  SHIMOKUCHI TAKASHI ,  ASAO YOSHIHISA ,  YADA KATSUHIRO

    IPC分类号： H04B3/58

    CPC分类号： H04B3/58 ,  H04B2203/5479

    摘要： PROBLEM TO BE SOLVED: To provide a communication system in which a transmission rate is hardly reduced, and which has much more nodes.
    SOLUTION: The communication system is provided with a first communication system which uses an existent multi-branch wired telecommunications network 50 as a signal transmission line, a second communication system which uses a distribution line 10 arranged in houses 2A, 2B, ..., as a signal transmission line, and a signal relay means 20 which performs communication between both the systems. In the first communication system, a first PLC MODEM 11 connected with a high-order network 300 is provided in a communication trunk 52a. In the second communication system, a second PLC MODEM 12 is provided in the distribution line 10. The signal relay means 20 includes two MODEM parts (first MODEM part 21 and a second MODEM part 22) for communication with the first PLC MODEM 11 and with the second PLC MODEM 12. Communication between different signal transmission lines is performed by the signal relay means 20.
    COPYRIGHT: (C)2006,JPO&NCIPI

    摘要翻译： 要解决的问题：提供几乎不减少传输速率并且具有更多节点的通信系统。 解决方案：通信系统设置有使用现有的多分支有线电信网络50作为信号传输线的第一通信系统，使用布置在房屋2A，2B中的配线10的第二通信系统。 作为信号传输线，以及执行两个系统之间的通信的信号中继装置20。 在第一通信系统中，在通信中继线52a中设置与高阶网络300连接的第一PLC MODEM 11。 在第二通信系统中，在分配线路10中设置第二PLC MODEM 12.信号中继装置20包括用于与第一PLC MODEM 11通信的两个MODEM部分（第一MODEM部分21和第二调制解调器部分22） 第二PLC调制解调器12.不同信号传输线路之间的通信由信号中继装置20执行。版权所有：（C）2006，JPO＆NCIPI

    Relay amplifier
    5.
    发明专利
    Relay amplifier 审中-公开
    继电器放大器

    公开(公告)号：JP2005064628A

    公开(公告)日：2005-03-10

    申请号：JP2003208066

    申请日：2003-08-20

    申请人： Mitsubishi Electric Corp ,  Mitsubishi Materials Corp ,  三菱マテリアル株式会社 ,  三菱電機株式会社

    发明人： NAKAMURA KENZO ,  YAMASHITA NOBUYUKI ,  NAKAMURA MASAHIKO ,  OKAMOTO TAKASHI ,  KOJIMA SAWAKO ,  HORI YASUAKI ,  NARUKAWA MASASHI ,  ISHIKAWA NAOKI

    IPC分类号： H04B3/58 ,  H01F17/06 ,  H04B3/56 ,  H05K9/00

    CPC分类号： H04B3/56 ,  H04B3/58 ,  H04B2203/5491

    摘要： PROBLEM TO BE SOLVED: To provide a relay amplifier capable of preventing the oscillation of an amplifier for recovering a gain of a communication signal with a simple configuration, and being made small in size and reduced in price.
    SOLUTION: The relay amplifier is provided at a branch point of power lines in power line communication and amplifies the communication signal. The relay amplifier includes: a signal coupler connected to both ends of the branch points to transmit / receive the communication signal to the power lines; and an amplifier for amplifying the communication signal received from the signal coupler.
    COPYRIGHT: (C)2005,JPO&NCIPI

    摘要翻译： 要解决的问题：提供一种能够以简单的结构防止放大器振荡以恢复通信信号的增益并且尺寸小并降低价格的中继放大器。 解决方案：继电器放大器设置在电力线通信中的电力线的分支点处，并放大通信信号。 继电器放大器包括：连接到分支点的两端的信号耦合器，用于向电力线发送/接收通信信号; 以及用于放大从信号耦合器接收的通信信号的放大器。 版权所有（C）2005，JPO＆NCIPI

    Path setting method as well as the network to adopt the path setting method, relay station and the master station
    9.
    发明专利
    Path setting method as well as the network to adopt the path setting method, relay station and the master station 有权
    空值

    公开(公告)号：JP4139758B2

    公开(公告)日：2008-08-27

    申请号：JP2003338696

    申请日：2003-09-29

    申请人： 松下電工株式会社 ,  関西電力株式会社

    发明人： 浩二 前川 ,  英樹 坂井 ,  心司 山本

    IPC分类号： H04L12/70 ,  H04L12/24 ,  H04L12/46 ,  H04L12/725 ,  H04L12/751 ,  H04L29/06 ,  H04L29/08

    CPC分类号： H04L45/16 ,  H04B3/58 ,  H04B2203/5479 ,  H04L29/06 ,  H04L45/02 ,  H04L67/14 ,  H04W40/02 ,  Y02D70/00 ,  Y02D70/30

    摘要： The present invention provides a path setting method for automatically setting network paths. The path setting method for generating paths in a network including a plurality of relay stations and a parent station which are connected with each other through a transmission line, comprises the steps of allowing each of the parent station and the plurality of relay stations to transmit basic information including its own identifier and its own path setting status, by means of a repetitive broadcast, allowing the relay station receiving the basic information to recognize the parent station or another relay station having a temporary path set thereto and transmit its own receiving-environment table including a transmission quality on the transmission line to the recognized station, allowing the another relay station receiving the receiving-environment table to forward it to the parent station through the use of the temporary path so as to notify the receiving-environment table to the parent station, and allowing the parent station receiving the forwarded receiving-environment table to set a temporary path to the relay station which has transmitted the receiving-environment table. In this manner, the parent station collects the transmission qualities on the inter-station transmission lines stepwise in order of the closest relay station to the farthest relay station to automatically set the paths.

    摘要翻译： 本发明提供了一种用于自动设置网络路径的路径设置方法。 用于在包括通过传输线彼此连接的多个中继站和母站的网络中生成路径的路径设置方法包括以下步骤：允许父站和多个中继站中的每一个发送基本 信息包括其自己的标识符和其自己的路径设置状态，通过重复广播，允许接收基本信息的中继站识别母站或具有设置的临时路径的另一个中继站，并发送其自己的接收环境表 包括到识别站的传输线上的传输质量，允许接收接收环境表的另一中继站通过使用临时路径将其转发给父站，以便将接收环境表通知给父 站，并允许父站接收转发的接收环境表t o设置已发送接收环境表的中继站的临时路径。 以这种方式，母站以最接近中继站的顺序逐步收集站间传输线路上的传输质量，以便自动设置路径。

    Network constituting apparatus and network constituting method
    10.
    发明专利
    Network constituting apparatus and network constituting method 有权
    网络构成设备和网络构成方法

    公开(公告)号：JP2007124567A

    公开(公告)日：2007-05-17

    申请号：JP2005317489

    申请日：2005-10-31

    申请人： Fujitsu Ltd ,  富士通株式会社

    发明人： AMAMIYA KOICHIRO ,  TANAKA TOSHIKI ,  MIYATA HIDEYUKI

    IPC分类号： H04L12/46 ,  H04L12/44 ,  H04L12/931 ,  H04L12/935

    CPC分类号： H04B3/58

    摘要： PROBLEM TO BE SOLVED: To prevent communication data from disappearing when switching physical wiring. SOLUTION: Before switching wiring of a physical wiring changeover switch 10, a communication stop instruction section 120 of a controller 100 instructs an IT device connected to the physical wiring changeover switch 10 to stop communication for a fixed time and to hold a communication bit stream to be transmitted in a temporary storage region. The stop of communication for the fixed time is instructed utilizing a exclusive control line between the controller 100 and the IT device, an idle port of the physical wiring changeover switch 10, and the like. COPYRIGHT: (C)2007,JPO&INPIT

    摘要翻译： 要解决的问题：为了防止通信数据在切换物理接线时消失。 解决方案：在切换物理线路切换开关10的接线之前，控制器100的通信停止指令部分120指示连接到物理线路切换开关10的IT设备停止通信一段固定的时间并保持通信 以在临时存储区域中发送。 使用控制器100和IT设备之间的专用控制线，物理线路切换开关10的空闲端口等来指示固定时间的通信停止。 版权所有（C）2007，JPO＆INPIT