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公开(公告)号：US11558121B2
公开(公告)日：2023-01-17
申请号：US17364929
申请日：2021-07-01
Applicant: FUJITSU LIMITED
Inventor： Setsuo Yoshida , Shoichiro Oda , Kazuyuki Tajima , Takeshi Hoshida , Takahito Tanimura
IPC: H04B10/04 , H04B10/564 , H04B10/61 , G02F1/01 , G02F1/21 , H04B10/079
Abstract: An optical transmitter includes: a modulator, square law detector, and a processor. The modulator generates an optical signal indicating transmission data. The square law detector detects an intensity of the optical signal using a photodetector and output first intensity data indicating the detected intensity. The processor calculates, based on the transmission data, an electric field of the optical signal generated by the modulator by using parameters pertaining to a state of the modulator. The processor calculates second intensity data indicating the intensity of the optical signal based on the calculated electric field. The processor updates the parameters so as to reduce a difference between the first intensity data and the second intensity data. The processor controls the state of the modulator based on the parameters.
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2.发明申请
公开(公告)号：US20150052233A1
公开(公告)日：2015-02-19
申请号：US14306420
申请日：2014-06-17
Applicant: FUJITSU LIMITED
Inventor： Yutaka Takita , Tomohiro Hashiguchi , Kazuyuki Tajima
IPC: H04L12/24
CPC classification number: H04L41/145 , H04L41/0826 , H04L41/12
Abstract: A network design apparatus includes a first processing unit configured to determine a communication route that connects predetermined nodes by selecting one or more paths provided between the nodes in a network, and to perform an estimation of communication lines opened in each of the selected one or more paths; a second processing unit configured to perform an estimation of communication apparatuses constituting the communication line and a housing that accommodates the communication apparatuses, for each node in the network, based on an estimation result of the first processing unit; and a third processing unit configured to determine whether there is a possibility of reduction in the number of the housings due to a change in the communication line, for each node in the network, based on respective estimation results of the first processing unit and the second processing unit.
Abstract translation: 网络设计装置包括：第一处理单元，被配置为通过选择在网络中的节点之间提供的一个或多个路径来确定连接预定节点的通信路由，并且对所选择的一个或多个中的每一个中打开的通信线路进行估计 路径 第二处理单元，被配置为基于第一处理单元的估计结果，对网络中的每个节点执行构成通信线路的通信设备的估计和容纳通信设备的外壳; 以及第三处理单元，其被配置为基于所述第一处理单元和所述第二处理单元的各自的估计结果，针对所述网络中的每个节点，确定是否存在由于所述通信线路的变化导致的所述壳体的数量减少的可能性 处理单元。
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公开(公告)号：US08948597B2
公开(公告)日：2015-02-03
申请号：US13725070
申请日：2012-12-21
Applicant: Fujitsu Limited
Inventor： Kazuyuki Tajima , Tomohiro Hashiguchi , Yutaka Takita
CPC classification number: H04J14/08 , H04J14/0257 , H04J14/0267
Abstract: Based on the demand information etc., an accommodation designing problem and an assignment problem are solved in a conventional method to design a network. It is confirmed whether or not a restriction on the number of wavelengths for each link is observed. When there are links exceeding the restriction of the number of wavelengths, the number of available wavelengths is subtracted from the first link having the largest number of excess wavelengths and the second link farthest from the first link in the links, and the result is set as a wavelength number limited value, thereby performing a network designing process again.
Abstract translation: 基于需求信息等，以设计网络的传统方法来解决住宿设计问题和分配问题。 确认是否观察到对每个链路的波长数量的限制。 当存在超过波长数量限制的链路时，从具有最大数量的超过波长的第一链路和距离链路中的第一链路最远的第二链路中减去可用波长的数量，并将结果设置为 波长数限制值，从而再次执行网络设计处理。
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公开(公告)号：US10999659B2
公开(公告)日：2021-05-04
申请号：US16937707
申请日：2020-07-24
Applicant: FUJITSU LIMITED
Inventor： Kazuyuki Tajima , Takahito Tanimura , Setsuo Yoshida , Takeshi Hoshida
Abstract: An optical network device receives an optical signal, to which polarization information is added, from a transmitter via a transmission line. The receiver generates electric-field-information signal of the optical signal. The processor acquires, for respective polarization rotation amounts, the electric-field-information signal during a period specified by the polarization information. The processor calculates, for respective polarization rotation amounts and based on the electric-field-information signal, evaluation values corresponding to powers of the optical signal at a plurality of positions on the transmission line. The processor calculates, for respective positions, variations in the evaluation values corresponding to the polarization rotation amounts. The processor output information that indicates a first position when the variation in the evaluation values for the first position is larger than that for a second position where the second position is adjacent to the first position on a transmitter side.
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公开(公告)号：US09825728B2
公开(公告)日：2017-11-21
申请号：US14628410
申请日：2015-02-23
Applicant: FUJITSU LIMITED
Inventor： Yutaka Takita , Tomohiro Hashiguchi , Kazuyuki Tajima
CPC classification number: H04J14/0227 , H04J14/0257 , H04L41/0823 , H04L41/0896 , H04L41/12 , H04L41/145
Abstract: A processor executes the following processes. An obtainment process obtains a first number of lines, which represents a number of lines that are deleted after changing, among lines that pass through the same line route. An extraction process extracts a line for which a first demand, which is accommodated before and after changing, does not exist. The extraction process further extracts lines in descending order of a band of the first demand from among lines including first demands until a total number of extracted lines reaches the first number of lines when the number of the extracted lines is smaller than the first number of lines. Then, a fixation process fixes a first demand accommodated in a line that has not been extracted. A deletion process deletes the extracted lines. A determination process determines an order of changing line routes of demands.
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6.发明授权Recording medium, accommodation design device, and accommodation design method 有权记录介质，住宿设计装置和住宿设计方法
公开(公告)号：US09495510B2
公开(公告)日：2016-11-15
申请号：US13859127
申请日：2013-04-09
Applicant: FUJITSU LIMITED
Inventor： Yutaka Takita , Kazuyuki Tajima , Tomohiro Hashiguchi
CPC classification number: G06F17/509 , H04Q11/0003
Abstract: A CPU collects count information of NW-side/CL-side communication cards when IFCs with plural types that store NW-side/CL-side communication cards to be designed are accommodated in two or more shelves. The CPU further collects card information of the number of slots used by IFCs, shelf information of the maximum number of slots that can be accommodated by IFCs in the shelf, and correspondence information of correspondence relationship when between-shelf-intercommunication between different NW-side communication cards is performed. The CPU further collects communication limit capacity to be used for intercommunication between the shelves. The CPU generates an integer planning model for assigning IFCs to be designed into two or more minimum shelves on the basis of card information, count information, shelf information, correspondence information, and communication limit capacity. The CPU executes the integer planning model and outputs a design solution for accommodation design for assigning IFCs into the minimum shelves.
Abstract translation: 当存储要设计的NW侧/ CL侧通信卡的多种类型的IFC被容纳在两个或更多个货架中时，CPU收集NW侧/ CL侧通信卡的计数信息。 CPU进一步收集IFC所使用的时隙数量的卡片信息，货架中的IFC可容纳的最大时隙数量的货架信息，以及不同NW侧之间的互换间的对应关系的对应关系信息 通信卡被执行。 CPU进一步收集通信限制容量，以用于货架之间的相互通信。 CPU根据卡信息，计数信息，货架信息，通信信息和通信限制容量生成一个整数规划模型，用于将IFC分配到两个或多个最小货架中。 CPU执行整数规划模型，并输出用于住宿设计的设计解决方案，以将IFC分配到最小货架。
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公开(公告)号：US09160474B2
公开(公告)日：2015-10-13
申请号：US14181979
申请日：2014-02-17
Applicant: FUJITSU LIMITED
Inventor： Kazuyuki Tajima , Tomohiro Hashiguchi , Yutaka Takita
IPC: H04L12/801 , H04J3/16 , H04J14/08 , H04L12/24
CPC classification number: H04J3/1682 , H04J14/08 , H04J2203/0055 , H04J2203/0069 , H04L41/145
Abstract: A network design method that determines a TDM transmission line for accommodating a given demand includes: extracting an available demand from among a plurality of provided demands; calculating a total bandwidth of the extracted available demand; sequentially selecting the plurality of demands; generating candidates for a combination of TDM transmission lines that accommodate the selected demand; and determining a combination of TDM transmission lines that accommodates the selected demand from among the candidates for the combination of TDM transmission lines. The generating process includes: extracting a TDM transmission line with a band utilization efficiency higher than a specified threshold from among TDM transmission lines including the selected demand as an available demand; and generating candidates for a combination of TDM transmission lines that accommodate the selected demand using the extracted TDM transmission line.
Abstract translation: 确定用于容纳给定需求的TDM传输线的网络设计方法包括：从多个提供的需求中提取可用需求; 计算提取的可用需求的总带宽; 依次选择多个要求; 产生用于适应所选择的需求的TDM传输线路的组合的候选者; 以及从TDM传输线的组合的候选中确定适应所选择的需求的TDM传输线的组合。 所述生成处理包括：从包括所选择的需求的TDM传输线中提取具有高于指定阈值的频带利用效率的TDM传输线作为可用需求; 以及使用提取的TDM传输线产生适应所选择的需求的TDM传输线的组合的候选。
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8.发明申请NETWORK DESIGNING APPARATUS, NETWORK DESIGNING METHOD, AND NETWORK DESIGNING PROGRAM 审中-公开网络设计设备，网络设计方法和网络设计程序
公开(公告)号：US20150023666A1
公开(公告)日：2015-01-22
申请号：US14322137
申请日：2014-07-02
Applicant: FUJITSU LIMITED
Inventor： Tomohiro Hashiguchi , Kazuyuki Tajima , Yutaka Takita
CPC classification number: H04L41/12 , H04J14/0295 , H04L41/0896 , H04L41/145
Abstract: A network designing apparatus which includes a first processing unit configured to select one or more paths formed among nodes in a network according to demands of bandwidths, determine a plurality of working communication routes and a plurality of protecting communication routes that connect the nodes to each other, respectively and estimate bandwidths and the number of communication lines required in one or more selected paths, respectively; and a second processing unit configured to allocate a predetermined number of logical channels to the working communication routes and the protecting communication routes based on the demanded bandwidths, the predetermined number of logical channels being corresponding to a number of logical channels that each of the communication lines has. The first processing unit is configured to permit the one or more paths to be shared among the plurality of protecting communication routes to determine the protecting communication routes and estimate bandwidths shared among communication routes sharing the paths.
Abstract translation: 一种网络设计装置，包括：第一处理单元，被配置为根据带宽的需要选择在网络中的节点之间形成的一个或多个路径，确定将节点彼此连接的多个工作通信路由和多个保护通信路由 分别估计一个或多个所选路径中的带宽和通信线路的数量; 以及第二处理单元，被配置为基于所请求的带宽将预定数量的逻辑信道分配给所述工作通信路由和保护通信路由，所述预定数量的逻辑信道对应于每个通信线路的多个逻辑信道 具有。 第一处理单元被配置为允许在多个保护通信路由之间共享一个或多个路径，以确定保护通信路由并估计共享路径的通信路由之间共享的带宽。
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公开(公告)号：US11742978B2
公开(公告)日：2023-08-29
申请号：US17554096
申请日：2021-12-17
Applicant: FUJITSU LIMITED
Inventor： Kazuyuki Tajima , Takahito Tanimura , Setsuo Yoshida , Eri Katayama , Kiichi Sugitani
IPC: H04B10/25 , H04J14/06 , H04B10/2513 , H04B10/2507
CPC classification number: H04J14/06 , H04B10/2513 , H04B10/2572
Abstract: An optical network device includes a receiver that receives a polarization multiplexed optical signal and a processor. The processor separates an electric field information signal indicating the polarization multiplexed optical signal into first and second polarization components orthogonal to each other, generates third and fourth polarization components by controlling the first and second polarization components, calculates an evaluation value corresponding to a power of the third or fourth polarization component for each of a plurality of positions on a transmission line, calculates a variation in the evaluation value for a control amount for each of the plurality of positions, and decides whether a first position is a position to be detected based on a result of comparing a variation in an evaluation value for the first position with a variation in an evaluation value for a second position adjacent to the first position.
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10.发明授权
公开(公告)号：US09602195B2
公开(公告)日：2017-03-21
申请号：US14793009
申请日：2015-07-07
Applicant: FUJITSU LIMITED
Inventor： Tomohiro Hashiguchi , Yutaka Takita , Kazuyuki Tajima
IPC: G02F1/00 , H04B10/032 , H04J3/16 , H04J3/14 , H04L12/46
CPC classification number: H04B10/032 , H04J3/14 , H04J3/1652 , H04J2203/006 , H04J2203/0085 , H04L12/4633
Abstract: A network design apparatus includes: a memory; and a processor coupled to the memory and configured to execute: accommodation design processing of, based on a traffic of a protection-applied or protection-unapplied first link in a first layer, generating a protection-unapplied second link in a second layer lower than the first layer, and generating a working path and a protection path of the first link on a network configured of the second link, and protection application processing of, based on the protection-unapplied second link and the working path and the protection path of the first link that are generated in the accommodation design processing, selecting or generating a protection-applied link in the second layer from the protection-unapplied second link.
