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1. 发明授权

US07761006B2 Method for designing optical network, and computer readable medium 有权
标题翻译：光网络设计方法和计算机可读介质
公开(公告)号：US07761006B2
公开(公告)日：2010-07-20
申请号：US11808911
申请日：2007-06-13
申请人： Toru Katagiri , Kazuyuki Tajima , Tomohiro Hashiguchi
发明人： Toru Katagiri , Kazuyuki Tajima , Tomohiro Hashiguchi
IPC分类号： H04B10/20 , H04L12/28
CPC分类号： H04J14/0227 , H04B10/275 , H04J14/0241 , H04J14/0283 , H04J14/0284 , H04J14/0286
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.
摘要翻译：通过在预定条件下，基于关于客户信号路径的给定信息搜索网络拓扑信息来选择适当的环形拓扑，并且基于所选择的环设计容纳客户端信号路径并具有最佳传输特性的波长环拓扑。因此，有效地设计了光网络中的客户端信号路径的适应。

2. 发明申请

US20090185805A1 NETWORK DESIGN APPARATUS, NETWORK DESIGN METHOD, AND COMPUTER PRODUCT 有权
标题翻译：网络设计设备，网络设计方法和计算机产品
公开(公告)号：US20090185805A1
公开(公告)日：2009-07-23
申请号：US12235166
申请日：2008-09-22
申请人： Tomohiro Hashiguchi , Toru Katagiri , Kazuyuki Tajima , Takashi Toyomaki
发明人： Tomohiro Hashiguchi , Toru Katagiri , Kazuyuki Tajima , Takashi Toyomaki
IPC分类号： H04B10/20
CPC分类号： H04J14/0227 , H04J14/0246 , H04J14/025 , H04J14/0284 , H04L41/145 , H04Q11/0062 , H04Q2011/0086 , H04Q2213/1301
摘要： A network design apparatus designs arrangement of various types of optical transmission devices in stations within a linear section in a network. An acquisition unit acquires information concerning the type of optical transmission device to be provided in the stations, and information concerning cost and transmission degradation for the optical transmission devices. The designing unit designs, based on the information acquired by the acquisition unit, an arrangement for which transmission degradation between stations respectively including an optical transmission device applicable as an optical regenerative repeater, is less than or equal to a threshold, and also has the least cost. An output unit outputs information concerning the arrangement designed by the design unit.
摘要翻译：网络设计装置在网络中的线性部分内的站内设计各种类型的光传输设备的布置。获取单元获取关于要在站中提供的光传输设备的类型的信息，以及关于光传输设备的成本和传输劣化的信息。设计单元基于由采集单元获取的信息，设计分别包括可用作光学再生中继器的光传输设备的站之间的传输劣化小于或等于阈值的布置，并且还具有最小成本。输出单元输出关于由设计单元设计的布置的信息。

3. 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。

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

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。

6. 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。

7. 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.

8. 发明申请

US20110038254A1 APPARATUS AND METHOD FOR FINDING A PAIR OF DISJOINT PATHS IN A COMMUNICATION NETWORK 有权
标题翻译：用于在通信网络中找到一对分组码的装置和方法
公开(公告)号：US20110038254A1
公开(公告)日：2011-02-17
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
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。

9. 发明授权

US07830789B2 Method for accommodating signal paths to ring network 有权
标题翻译：适应环网信号路径的方法
公开(公告)号：US07830789B2
公开(公告)日：2010-11-09
申请号：US12215449
申请日：2008-06-27
申请人： Tomohiro Hashiguchi , Toru Katagiri , Kazuyuki Tajima
发明人： Tomohiro Hashiguchi , Toru Katagiri , Kazuyuki Tajima
IPC分类号： H04L12/42
CPC分类号： H04J3/085 , H04J2203/0067 , H04L45/123 , H04L45/124 , H04L45/302
摘要： According an aspect of the embodiment, there is provided a method for accommodating signal paths to a ring network. A demand chain is defined as a series of traffic demands in which each traffic demand shares one of the pair of terminal nodes pointed thereby with at least one adjacent traffic demand and the number of pairs of terminal nodes pointed by traffic demands in the series of traffic demands is maximized. Each traffic demand of the demand chain is corresponded to a demand accommodating route which is defined as a route between the pair of terminal nodes on the ring network pointed by the each traffic demand and arranged in a predetermined rotation direction on the ring network. Then, signal paths required by traffic demands each pointing a pair of terminal nodes both included in the demand accommodating route chain are accommodated to the demand accommodating route chain.
摘要翻译：根据实施例的一个方面，提供一种用于适应信号路径到环形网络的方法。需求链被定义为一系列交通需求，其中每个交通需求分享至少一个相邻交通需求的一对终端节点中的一个，以及在一系列交通中指向交通需求的终端节点对数要求最大化。需求链的每个业务需求对应于需求容纳路由，其被定义为由每个业务需求指向的环形网络上的一对终端节点之间的路由，并且以环形网络上的预定旋转方向布置。然后，由需求容纳路径链包括的一对终端节点指向需求容纳路由链所需的信号路径。

10. 发明申请

US20100061722A1 NETWORK DESIGN APPARATUS AND NETWORK DESIGN METHOD 有权
标题翻译：网络设计设备和网络设计方法
公开(公告)号：US20100061722A1
公开(公告)日：2010-03-11
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： H04B10/08
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

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