公开(公告)号：US07848651B2

公开(公告)日：2010-12-07

申请号：US10862181

申请日：2004-06-03

Applicant: Khoi Nhu Hoang ,  Santosh Kumar Sadananda

Inventor： Khoi Nhu Hoang ,  Santosh Kumar Sadananda

IPC: H04J14/00

CPC classification number: H04L45/302 ,  H04L43/0811 ,  H04L45/02 ,  H04L45/12 ,  H04L45/28 ,  H04L45/50 ,  H04L45/62 ,  H04Q2011/0086 ,  H04Q2011/009

Abstract: A selective distribution messaging scheme for an optical network. According to one embodiment of the invention, a wavelength division multiplexing optical network includes a number of nodes each having an optical cross connect and each having stored therein a database representing conversion free connectivity from that node to others of the nodes. In addition, each of the nodes employs a messaging scheme to propagate notification of changes in the optical network to others of the nodes to maintain their databases. The messaging scheme in each of the nodes transmits messages to only selected ones of the other nodes based at least in part on the conversion free connectivity to minimize the number of communications between nodes.

Abstract translation: 一种用于光网络的选择性分发消息传递方案。 根据本发明的一个实施例，波分复用光网络包括多个节点，每个节点具有光交叉连接，并且每个节点都存储有表示从节点到其他节点的转换自由连接的数据库。 此外，每个节点采用消息传送方案将光网络中的变化通知传播到节点的其他节点以维护其数据库。 每个节点中的消息传递方案至少部分地基于转换自由连接来将消息发送到仅选择的其他节点，以最小化节点之间的通信数量。

公开(公告)号：US20090257751A1

公开(公告)日：2009-10-15

申请号：US11921588

申请日：2006-06-06

Applicant: Santosh Kumar Sadananda ,  Christopher M. Look

Inventor： Santosh Kumar Sadananda ,  Christopher M. Look

IPC: H04J14/02

CPC classification number: H04J14/0227 ,  H04J14/0238 ,  H04J14/0283 ,  H04J14/0284 ,  H04J14/0294 ,  H04J14/0295

Abstract: A method and apparatus for an electrically switched optically protecting network device is described. One embodiment of the invention established pairs of optical circuits between different electrically switched optically protecting network devices acting as access nodes of an optically switched network. The network device communicates different add/drop traffic flows between externally facing ports of different electrically switched optically protecting network devices by transmitting over the optical circuit. In addition, the network device optically switches optical circuits for which the network device is an intermediate node and electrically switches packets between different ones of the network devices' externally facing ports and those of the optical circuits for which the network device is an end node. Furthermore, the network device protects the communication of traffic flows across the optical network by controlling the packet electrical switching to the pairs of optical circuits.

Abstract translation: 描述了用于电开关光学保护网络设备的方法和设备。 本发明的一个实施例在用作光交换网络的接入节点的不同电开关光保护网络设备之间建立了一对光电路。 网络设备通过在光电路上的发送来传送不同的电开关光学保护网络设备的外部相对端口之间的不同的分插流量。 此外，网络设备光学地切换网络设备是中间节点的光电路，并且在不同的网络设备的外部面向端口之间和网络设备是终端节点的光学电路的电路之间电切换分组。 此外，网络设备通过控制分组电切换到光对电路来保护跨越光网络的业务流的通信。

公开(公告)号：US20090034975A1

公开(公告)日：2009-02-05

申请号：US10781227

申请日：2004-02-17

Applicant: Santosh Kumar Sadananda

Inventor： Santosh Kumar Sadananda

IPC: H04J14/02

CPC classification number: H04J14/0295 ,  H04J14/0279

Abstract: Methods and apparatuses for handling multiple failures in an optical network are described herein. In one embodiment, an exemplary method includes receiving a demand for allocating a protection path that meets a set of disjointness constraints with respect to a working path, the protection path suitable to be shared with one or more other working paths, each of the working paths associated with a priority for obtaining the shared protection path, and in response to the demand, selecting a protection path that meets the set of disjointness constraints with respect to the working path and has not been shared with another working path having the same priority as the working path associated with the protection path in demand. Other methods and apparatuses are also described.

Abstract translation: 本文描述了用于处理光网络中的多个故障的方法和装置。 在一个实施例中，示例性方法包括接收分配保护路径的需求，所述保护路径满足关于工作路径的一组不相容约束，所述保护路径适于与一个或多个其他工作路径共享，每个工作路径 与获得共享保护路径的优先级相关联，并且响应于需求，选择满足相对于工作路径的一组不相容性约束的保护路径，并且尚未与具有与所述工作路径相同优先级的另一工作路径共享 与需求保护路径相关的工作路径。 还描述了其它方法和装置。

公开(公告)号：US07860392B2

公开(公告)日：2010-12-28

申请号：US10455933

申请日：2003-06-06

Applicant: Khoi Nhu Hoang ,  Santosh Kumar Sadananda

Inventor： Khoi Nhu Hoang ,  Santosh Kumar Sadananda

IPC: H04J14/00

CPC classification number: H04L45/302 ,  H04L43/0811 ,  H04L45/02 ,  H04L45/12 ,  H04L45/28 ,  H04L45/50 ,  H04L45/62 ,  H04Q2011/0086 ,  H04Q2011/009

Abstract: A set of one or more connectivity constraints imposed on the building/maintaining of network topology databases.

Abstract translation: 对建立/维护网络拓扑数据库的一套或多项连接约束。

公开(公告)号：US07689120B2

公开(公告)日：2010-03-30

申请号：US10626363

申请日：2003-07-23

Applicant: Khoi Nhu Hoang ,  Santosh Kumar Sadananda

Inventor： Khoi Nhu Hoang ,  Santosh Kumar Sadananda

IPC: H04J14/00

CPC classification number: H04L45/302 ,  H04L43/0811 ,  H04L45/02 ,  H04L45/12 ,  H04L45/28 ,  H04L45/50 ,  H04L45/62 ,  H04Q2011/0086 ,  H04Q2011/009

Abstract: A source based scheme to establish communication paths in an optical network. According to one embodiment of the invention, a number of wavelength division multiplexing access nodes of an optical network employ a source based scheme to establish communication paths. Each of these access nodes stores a set of one or more network topology databases based on a set of one or more connectivity constraints.

Abstract translation: 一种基于源的方案，用于在光网络中建立通信路径。 根据本发明的一个实施例，光网络的多个波分复用接入节点采用基于源的方案来建立通信路径。 这些访问节点中的每一个基于一组或多个连接性约束存储一组一个或多个网络拓扑数据库。

公开(公告)号：US08463122B2

公开(公告)日：2013-06-11

申请号：US13584655

申请日：2012-08-13

Applicant: Santosh Kumar Sadananda ,  Christopher M. Look ,  Jeffery J. Maki

Inventor： Santosh Kumar Sadananda ,  Christopher M. Look ,  Jeffery J. Maki

IPC: H04B10/08

CPC classification number: H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0084

Abstract: A method and apparatus for performing a path based quality check for a specified bit rate in a wavelength division multiplexing optical network is described. According to one embodiment of the invention, a method selects from a database one of the available paths as a currently selected path. The database stores a representation of the available paths from an access node of the optical network to other access nodes of the optical network. The method further determines a cumulative noise, cumulative chromatic dispersion, and a maximum allowable chromatic dispersion for the currently selected path. In addition, the method determines whether the currently selected path passes the path based quality check based on whether the cumulative noise is less than the maximum allowable noise at a specific bit rate and whether the chromatic dispersion is less than the maximum allowable chromatic dispersion at the specified bit rate.

Abstract translation: 描述了用于对波分多路复用光网络中的指定比特率执行基于路径的质量检查的方法和装置。 根据本发明的一个实施例，方法从数据库中选择一个可用路径作为当前选择的路径。 数据库存储从光网络的接入节点到光网络的其他接入节点的可用路径的表示。 该方法还确定当前所选路径的累积噪声，累积色散和最大允许色散。 此外，该方法基于累积噪声是否小于特定位速率下的最大允许噪声，以及色散是否小于第一容许色散的最大允许色散，来确定当前所选路径是否通过基于路径的质量检查 指定比特率。

公开(公告)号：US20130039651A1

公开(公告)日：2013-02-14

申请号：US13584655

申请日：2012-08-13

Applicant: Santosh Kumar Sadananda ,  Christopher M. Look ,  Jeffery J. Maki

Inventor： Santosh Kumar Sadananda ,  Christopher M. Look ,  Jeffery J. Maki

IPC: H04B10/08

CPC classification number: H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0084

Abstract: A method and apparatus for performing a path based quality check for a specified bit rate in a wavelength division multiplexing optical network is described. According to one embodiment of the invention, a method selects from a database one of the available paths as a currently selected path. The database stores a representation of the available paths from an access node of the optical network to other access nodes of the optical network. The method further determines a cumulative noise, cumulative chromatic dispersion, and a maximum allowable chromatic dispersion for the currently selected path. In addition, the method determines whether the currently selected path passes the path based quality check based on whether the cumulative noise is less than the maximum allowable noise at a specific bit rate and whether the chromatic dispersion is less than the maximum allowable chromatic dispersion at the specified bit rate.

Abstract translation: 描述了用于对波分多路复用光网络中的指定比特率执行基于路径的质量检查的方法和装置。 根据本发明的一个实施例，方法从数据库中选择一个可用路径作为当前选择的路径。 数据库存储从光网络的接入节点到光网络的其他接入节点的可用路径的表示。 该方法还确定当前所选路径的累积噪声，累积色散和最大允许色散。 此外，该方法基于累积噪声是否小于特定位速率下的最大允许噪声，以及色散是否小于第一容许色散的最大允许色散，来确定当前所选路径是否通过基于路径的质量检查 指定比特率。

公开(公告)号：US20090304380A1

公开(公告)日：2009-12-10

申请号：US11921620

申请日：2006-06-06

Applicant: Santosh Kumar Sadananda ,  Christopher M. Look ,  Jeffery J. Maki

Inventor： Santosh Kumar Sadananda ,  Christopher M. Look ,  Jeffery J. Maki

IPC: H04B17/00 ,  H04J14/02

CPC classification number: H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0084

Abstract: A method and apparatus for implementing optical network quality using bit error rate and chromatic dispersion. According to one embodiment of the invention, a method includes the provision of quality of service in a wavelength division multiplexing optical network that supports a plurality of bit rates. As part of this method, the cumulative noise and cumulative chromatic dispersion for each available path as a whole is determined, where an available path is a series of two or more nodes each connected by an optical link on which a set of wavelengths is available for establishing a lightpath. In addition, different grades of path quality are distinguished based on bit error rate (BER), where BER is based on cumulative noise and bit rate. Furthermore, a minimum path quality is required based on chromatic dispersion decibel penalty, where chromatic dispersion decibel penalty is based on cumulative chromatic dispersion and bit rate.

Abstract translation: 一种使用误码率和色散实现光网络质量的方法和装置。 根据本发明的一个实施例，一种方法包括在支持多个比特率的波分复用光网络中提供服务质量。 作为该方法的一部分，确定了作为整体的每个可用路径的累积噪声和累积色散，其中可用路径是两个或多个两个或更多个节点的系列，每个节点通过光链路连接，在该链路上，一组波长可用于 建立光线。 此外，基于误码率（BER）区分不同等级的路径质量，其中BER基于累积噪声和比特率。 此外，基于色散分贝罚分需要最小路径质量，其中色散分贝损失基于累积色散和比特率。

公开(公告)号：US08244127B2

公开(公告)日：2012-08-14

申请号：US11921620

申请日：2006-06-06

Applicant: Santosh Kumar Sadananda ,  Christopher M. Look ,  Jeffery J. Maki

Inventor： Santosh Kumar Sadananda ,  Christopher M. Look ,  Jeffery J. Maki

IPC: H04B10/08

CPC classification number: H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0084

Abstract: A method and apparatus for implementing optical network quality using bit error rate and chromatic dispersion. According to one embodiment of the invention, a method includes the provision of quality of service in a wavelength division multiplexing optical network that supports a plurality of bit rates. As part of this method, the cumulative noise and cumulative chromatic dispersion for each available path as a whole is determined, where an available path is a series of two or more nodes each connected by an optical link on which a set of wavelengths is available for establishing a lightpath. In addition, different grades of path quality are distinguished based on bit error rate (BER), where BER is based on cumulative noise and bit rate. Furthermore, a minimum path quality is required based on chromatic dispersion decibel penalty, where chromatic dispersion decibel penalty is based on cumulative chromatic dispersion and bit rate.

Abstract translation: 一种使用误码率和色散实现光网络质量的方法和装置。 根据本发明的一个实施例，一种方法包括在支持多个比特率的波分复用光网络中提供服务质量。 作为该方法的一部分，确定了作为整体的每个可用路径的累积噪声和累积色散，其中可用路径是两个或多个两个或更多个节点的系列，每个节点通过光链路连接，在该链路上，一组波长可用于 建立光线。 此外，基于误码率（BER）区分不同等级的路径质量，其中BER基于累积噪声和比特率。 此外，基于色散分贝罚分需要最小路径质量，其中色散分贝损失基于累积色散和比特率。

公开(公告)号：US20100266279A1

公开(公告)日：2010-10-21

申请号：US12758721

申请日：2010-04-12

Applicant: SANTOSH KUMAR SADANANDA

Inventor： SANTOSH KUMAR SADANANDA

IPC: H04J14/02

CPC classification number: H04J14/0241 ,  H04J14/0257 ,  H04J14/0267 ,  H04J14/0268 ,  H04J14/0269 ,  H04J14/0294 ,  H04J14/0295 ,  H04L41/0654 ,  H04L43/0811 ,  H04Q11/0062 ,  H04Q2011/0073 ,  H04Q2011/0081

Abstract: Methods and apparatuses for multiple redundancy schemes in an optical network are described herein. In one embodiment, an exemplary method includes receiving a demand for allocating a first protection path that meets a first set of disjointness constraints with respect to a first working path according to a first protection scheme having a first priority, in response to the demand, locating a second protection path that meets a second set of disjointness constraints with respect to a second working path according to a second protection scheme having a second priority, and assigning the second protection path as a protection path to the first working path if the first priority of the first protection scheme is higher than the second priority of the second protection scheme. Other methods and apparatuses are also described.

Abstract translation: 本文描述了光网络中的多冗余方案的方法和装置。 在一个实施例中，示例性方法包括响应于需求，接收根据具有第一优先级的第一保护方案来分配满足关于第一工作路径的第一组不相容性约束的第一保护路径的需求，定位 第二保护路径，其根据具有第二优先级的第二保护方案，满足关于第二工作路径的第二组不相容性约束;以及如果第二保护路径的第一优先级为 第一保护方案比第二保护方案的第二优先级高。 还描述了其它方法和装置。