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1. 发明申请

US20130003730A1 PATH SEARCH PROGRAM, PATH SEARCH APPARATUS AND PATH SEARCH METHOD 审中-公开
标题翻译：路径搜索程序，路径搜索设备和路径搜索方法
公开(公告)号：US20130003730A1
公开(公告)日：2013-01-03
申请号：US13469237
申请日：2012-05-11
申请人： Kazuyuki Tajima , Tomohiro Hashiguchi , Yutaka Takita
发明人： Kazuyuki Tajima , Tomohiro Hashiguchi , Yutaka Takita
IPC分类号： H04L12/56
CPC分类号： H04L45/12
摘要： A computer-readable recording medium having stored therein a program for causing a computer to execute a process includes accepting a start node and finish node that are both terminuses for a circuit that is to be accommodated in a transmission network that includes a plurality of transmission lines, selecting, from the plurality of transmission lines, a transmission line whose arrangement order of arranging a plurality of nodes on the transmission line in an order of an indicated direction determined for the transmission line is the same as an order of the plurality of nodes determined in accordance with a cost order of the shortest path from a node at a terminus of the circuit to the plurality of nodes, and searching for a path from the circuit's start node to the circuit's finish node via the selected transmission line in the order of the indicated direction.
摘要翻译：其中存储有用于使计算机执行处理的程序的计算机可读记录介质包括接收起始节点和完成节点，所述起始节点和完成节点都是要容纳在包括多个传输线的传输网络中的电路的终端从所述多条传输线中选择一条传输线，其传输线的排列顺序与所确定的所述多个节点的顺序相同，所述传输线按照所述传输线确定的指示方向的顺序排列在所述传输线上根据从电路终点处的节点到多个节点的最短路径的成本顺序，并且经由所选择的传输线以从该电路的起始节点到电路的完成节点的顺序搜索路径指示方向。

2. 发明授权

US08345538B2 Apparatus and method for finding a pair of disjoint paths in a communication network 有权
标题翻译：在通信网络中找到一对不相交路径的装置和方法
公开(公告)号：US08345538B2
公开(公告)日：2013-01-01
申请号：US12853336
申请日：2010-08-10
申请人： Tomohiro Hashiguchi , Toru Katagiri , Kazuyuki Tajima , Yutaka Takita
发明人： Tomohiro Hashiguchi , Toru Katagiri , Kazuyuki Tajima , Yutaka Takita
IPC分类号： H04J3/14 , H04L1/00 , H04L12/26
CPC分类号： H04Q11/0062 , H04J14/0267 , H04J14/0268 , H04L45/1283 , H04L45/1287 , H04L45/22 , H04Q2011/0073
摘要： There is provided topology information including connection states among nodes in a network, and port information including restriction conditions on connectivity among ports within a restricted node. A path search apparatus finds a first path having the minimum total link-cost among a plurality of paths. The topology information is changed so that the first path is not searched for as a path having the minimum total link-cost among the plurality of paths, and the port information is changed based on a port connectivity change rule. Then, the path search apparatus finds a second path different from the first path, based on the changed port information and the changed topology information, and reconfigures a pair of link-disjoint paths satisfying the restriction conditions imposed on the restricted node, by removing a link shared by both the first and second paths from the original topology information.
摘要翻译：提供了包括网络中的节点之间的连接状态的拓扑信息，以及包括受限节点内的端口之间的连接性的限制条件的端口信息。路径搜索装置在多个路径中找到具有最小总链路成本的第一路径。改变拓扑信息，使得第一路径不被搜索为多个路径中具有最小总链路成本的路径，并且基于端口连接性改变规则改变端口信息。然后，路径搜索装置基于改变的端口信息和改变的拓扑信息，找到与第一路径不同的第二路径，并且通过去除一个对应于限制节点的限制条件来重新配置满足限制条件的一对链路不相交路径链路由原始拓扑信息由第一和第二路径共享。

3. 发明申请

US20120079116A1 APPARATUS AND METHOD FOR ALLOCATING DEVICES TO A COMMUNICATION ROUTE 有权
标题翻译：用于将设备分配到通信路由的装置和方法
公开(公告)号：US20120079116A1
公开(公告)日：2012-03-29
申请号：US13218853
申请日：2011-08-26
申请人： Tomohiro HASHIGUCHI , Kazuyuki Tajima , Yutaka Takita
发明人： Tomohiro HASHIGUCHI , Kazuyuki Tajima , Yutaka Takita
IPC分类号： G06F15/16
CPC分类号： H04L45/12
摘要： There is provided an apparatus and method for allocating devices to a communication route. Network topology information and device information including a device-cost assigned to each of candidate-devices allowed to be allocated to a plurality of segments on the communication route are provided. An integer/linear programming problem is generated to obtain a feasible device-allocation, and an objective function for calculating an objective function value is defined. A sequence of feasible device-allocations are generated by sequentially generating a next feasible device-allocation from a current feasible device-allocation while improving an objective function value until the objective function value is not improved any more, and the last one of the sequence of feasible device-allocations is determined to be an optimum device-allocation. The next feasible device-allocation is generated from the current feasible device-allocation by replacing a basic candidate-device with an alternative candidate-device selected based on reduced-costs calculated for nonbasic candidate-devices.
摘要翻译：提供了一种用于将设备分配到通信路由的装置和方法。提供了网络拓扑信息和设备信息，包括分配给允许分配给通信路由上的多个段的每个候选设备的设备成本。产生整数/线性规划问题以获得可行的设备分配，并且定义用于计算目标函数值的目标函数。通过从当前的可行设备分配顺序地生成下一个可行的设备分配，同时改善目标函数值直到目标函数值不再被改善，并且最后的一个序列可行设备分配被确定为最佳设备分配。通过使用基于为非基本候选设备计算的降低成本而选择的替代候选设备替换基本候选设备，从当前可行的设备分配生成下一个可行设备分配。

4. 发明授权

US08068732B2 Network design apparatus and network design method 有权
标题翻译：网络设计及网络设计方法
公开(公告)号：US08068732B2
公开(公告)日：2011-11-29
申请号：US12479206
申请日：2009-06-05
申请人： Tomohiro Hashiguchi , Toru Katagiri , Kazuyuki Tajima , Yutaka Takita
发明人： Tomohiro Hashiguchi , Toru Katagiri , Kazuyuki Tajima , Yutaka Takita
IPC分类号： H04B10/00
CPC分类号： H04Q11/0062 , H04L41/12 , H04L41/145 , H04Q2011/0086 , H04Q2011/009
摘要： A network design apparatus includes an information acquiring unit acquiring optical network information, a section dividing unit dividing an optical network into linear sections, a combination candidate determining unit determining candidates for combinations of various kinds of optical transmission equipment to be placed in each station in each of the linear sections, a noise amount upper limit determining unit determining an upper limit to the amount of noise allowed for each wavelength path, and an equipment placement unit solving an integer programming problem having an objective function that minimizes the cost of the optical transmission equipment and OEO regenerators, subject to the constraints that one optical transmission equipment combination is selected for each linear section and that the number of OEO regenerators necessary for each wavelength path is determined by the cumulative amount of noise of the wavelength path and the noise upper limit determined for the wavelength path.
摘要翻译：一种网络设计装置，包括：获取光网络信息的信息获取单元，将光网络划分成线性区段的区段划分单元;组合候选确定单元，确定各放置在每个站中的各种光传输设备的组合的候选项线性部分的噪声量上限确定单元，确定每个波长路径允许的噪声量的上限;以及解决具有使光传输设备的成本最小化的目标函数的整数规划问题的设备布置单元和OEO再生器，受到每个线性部分选择一个光传输设备组合的限制，并且每个波长路径所需的OEO再生器的数量由波长路径的累积噪声和确定的噪声上限确定对于波长路径

5. 发明申请

US20110206371A1 APPARATUS FOR SUPPORTING DESIGNING OF OPTICAL NETWORK, PROCESS FOR DESIGNING OPTICAL NETWORK, AND COMPUTER-READABLE, NON-TRANSITORY MEDIUM STORING NETWORK DESIGN PROGRAM 有权
标题翻译：支持设计光网络的设备，设计光网络的过程和计算机可读，非终端介质存储网络设计程序
公开(公告)号：US20110206371A1
公开(公告)日：2011-08-25
申请号：US13032698
申请日：2011-02-23
申请人： Kazuyuki Tajima , Tomohiro Hashiguchi , Yutaka Takita
发明人： Kazuyuki Tajima , Tomohiro Hashiguchi , Yutaka Takita
IPC分类号： H04B10/00 , H04B10/08
CPC分类号： H04B10/2513 , H04J14/0268 , H04J14/0269 , H04J14/0271
摘要： In an apparatus for supporting designing of an optical network including a plurality of nodes and links which connect the plurality of nodes: a storage stores information indicating distances of the links and information indicating amounts of chromatic dispersion in the links; and a path selection unit selects a path for use in transmission of an optical signal, from among a plurality of paths each extending from a start node to a destination node, by reference to the storage. The path selection unit selects the path for use in transmission on the basis of deviations of amounts of chromatic dispersion accumulated by transmission to respective nodes on each of the plurality of paths, from reference amounts at the respective nodes, and the reference amounts at the respective nodes on each of the plurality of paths are determined according to distances from the start node to the respective nodes.
摘要翻译：在用于支持包括连接多个节点的多个节点和链路的光网络的设计的装置中：存储器存储指示链路的距离的信息和指示链路中的色散量的信息; 并且路径选择单元通过参考存储器从从开始节点到目的地节点延伸的多个路径中选择用于光信号的传输的路径。路径选择单元根据从多个路径中的每一个路径上的各个节点的传输累积的色散量的偏差，从各个节点的参考量和各个节点的参考量，选择用于发送的路径。根据从起始节点到相应节点的距离来确定多个路径中的每一个上的节点。

6. 发明授权

US07853226B2 Peak-hold circuit and signal strength indicator using the peak-hold circuit 有权
标题翻译：峰值保持电路和信号强度指示器使用峰值保持电路
公开(公告)号：US07853226B2
公开(公告)日：2010-12-14
申请号：US11979679
申请日：2007-11-07
申请人： Manabu Hirata , Takashi Taya , Kazuyuki Tajima
发明人： Manabu Hirata , Takashi Taya , Kazuyuki Tajima
IPC分类号： H04B1/16
CPC分类号： H03F3/45
摘要： A peak-hold circuit includes a differential amplifier having first and second transistors as a differential pair, the first transistor receiving an input signal at its gate, a third transistor connected between a first power supply and an output node connecting a gate of the second transistor, connectivity of the third transistor being controlled by the output of the differential amplifier, a capacitor for holding a peak voltage, connected between the output node and a second power supply, a resistor for discharging, which is connected in parallel to the capacitor, and a fourth transistor connected to the first transistor in parallel, the fourth transistor receiving at its gate an a reference voltage for limiting a voltage.
摘要翻译：峰值保持电路包括具有作为差分对的第一和第二晶体管的差分放大器，第一晶体管在其栅极接收输入信号，连接在第一电源和连接第二晶体管的栅极的输出节点之间的第三晶体管连接在输出节点和第二电源之间的用于保持峰值电压的电容器，与电容器并联连接的用于放电的电阻器，以及第四晶体管并联连接到第一晶体管，第四晶体管在其栅极处接收用于限制电压的参考电压。

7. 发明申请

US20100215377A1 OPTICAL NETWORK DESIGN APPARATUS AND DISPERSION COMPENSATION DESIGN METHOD 有权
标题翻译：光网络设计装置和分散补偿设计方法
公开(公告)号：US20100215377A1
公开(公告)日：2010-08-26
申请号：US12620812
申请日：2009-11-18
申请人： Kazuyuki TAJIMA , Toru Katagiri , Tomohiro Hashiguchi , Yutaka Takita
发明人： Kazuyuki TAJIMA , Toru Katagiri , Tomohiro Hashiguchi , Yutaka Takita
IPC分类号： H04B10/12
CPC分类号： H04B10/2513
摘要： In an optical network design apparatus, a constraint setter sets a first constraint that one of alternative values given beforehand is selected as the dispersion compensation amount of each node, sets a first margin value that assumes a nonnegative value, sets a second constraint that the first margin value is equal to or greater than the difference between the residual dispersion and the lower bound of an allowable range, sets a second margin value that assumes a nonnegative value, and sets a third constraint that the second margin value is equal to or greater than the difference between the upper bound of the allowable range and the residual dispersion. A calculation controller generates an objective function including the first, second and third constraints and including a summation of the first and second margin values for all paths, and derives a solution that minimizes the objective function.
摘要翻译：在光网络设计装置中，约束设定器设定将预先给出的备选值中的一个选择为每个节点的色散补偿量的第一约束，设置假定为非负值的第一边距值，设定第二约束，余量值等于或大于允许范围的残差色散和下限之间的差值，设置假设为非负值的第二余量值，并设定第二限制值等于或大于允许范围的上限与剩余色散之间的差异。计算控制器产生包括第一，第二和第三约束的目标函数，并且包括对于所有路径的第一和第二边界值的求和，并导出最小化目标函数的解。

8. 发明授权

US07751345B2 Optical network design method and storage medium for storing design program 有权
标题翻译：用于存储设计程序的光网络设计方法和存储介质
公开(公告)号：US07751345B2
公开(公告)日：2010-07-06
申请号：US11742532
申请日：2007-04-30
申请人： Tomohiro Hashiguchi , Toru Katagiri , Kazuyuki Tajima
发明人： Tomohiro Hashiguchi , Toru Katagiri , Kazuyuki Tajima
IPC分类号： H04B10/00 , H04B10/08
CPC分类号： H04J14/0294 , H04J14/0227 , H04J14/0241 , H04J14/0278 , H04J14/0283 , H04J2203/0089
摘要： If exists a client signal of a bandwidth larger than “optical signal bandwidth BW” divided by “the number of utilizable ports P”, extracted is a combination(s) of signals including one or more of a signal of a maximum bandwidth, of signals of which a total bandwidth is within the BW and of signals of which the number of total ports required in correspondence with a protection type of each client signal is equal to P, and selected is a combination of which the total bandwidth is a maximum from among the extracted combinations.
摘要翻译：如果存在大于“光信号带宽BW”的带宽的客户端信号除以“可利用端口P的数量”，则提取的是包括最大带宽的信号中的一个或多个信号的信号的组合，信号其总带宽在BW内，并且与每个客户端信号的保护类型相对应所需的总端口数等于P的信号，并且选择的总和带宽是从提取的组合。

9. 发明申请

US20090319664A1 RESOURCE RESERVATION APPARATUS AND METHOD 有权
标题翻译：资源预留装置和方法
公开(公告)号：US20090319664A1
公开(公告)日：2009-12-24
申请号：US12474411
申请日：2009-05-29
申请人： Kazuyuki TAJIMA , Shinya Kano
发明人： Kazuyuki TAJIMA , Shinya Kano
IPC分类号： G06F15/173
CPC分类号： H04L69/14 , H04L45/125 , H04L45/22 , H04L47/70 , H04L47/726 , H04L69/40 , Y02D50/30
摘要： A resource reservation apparatus reserving a resource on a second and third route connecting a start with end node of the first route over a network having a resource on a first route, includes a resource controller for defining a fourth route including a link obtained by excluding a common link between the first and second route and between the first and third route from a link included in the first, second or third route, a message generator for generating a message used for reserving a resource of the link included in the fourth route and transmitting the message to a node on the fourth route, and a message processor for transmitting a message used for generating the second and third route from the resource on the first route and on the fourth route reserved by the message generator to a node included in the second or third route.
摘要翻译：一种资源预留装置，在通过具有第一路径的资源的网络上连接起始于第一路由的终端的第二和第三路由上的资源包括资源控制器，用于定义包括通过排除在第一和第二路由之间以及从包括在第一，第二或第三路由中的链路的第一和第三路由之间的公共链路，用于生成用于保留包括在第四路由中的链路的资源的消息的消息生成器，向第四路由上的节点发送的消息，以及消息处理器，用于从第一路由上的资源和由消息生成器预留的第四路由发送用于生成第二和第三路由的消息到包括在第二路由中的节点或第三条路线。

10. 发明申请

US20070291666A1 Method for designing optical network, optical network, and computer readable medium 审中-公开
公开(公告)号：US20070291666A1
公开(公告)日：2007-12-20
申请号：US11705582
申请日：2007-02-13
申请人： Toru Katagiri , Kazuyuki Tajima , Tomohiro Hashiguchi
发明人： Toru Katagiri , Kazuyuki Tajima , Tomohiro Hashiguchi
IPC分类号： H04L12/28
CPC分类号： H04L12/437 , H04L12/66
摘要： An appropriate ring topology is selected by searching network topology information on the basis of given information about client signal paths on a predetermined condition, and a wavelength ring accommodating the client signal paths and having an optimal transmission characteristic is designed on the basis of the selected ring topology. Accordingly, accommodation of client signal paths in an optical network is efficiently designed.

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