公开(公告)号：US09083485B2

公开(公告)日：2015-07-14

申请号：US13445756

申请日：2012-04-12

申请人： Xi Wang ,  Inwoong Kim ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Xi Wang ,  Inwoong Kim ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： H04J14/02 ,  H04J14/00

CPC分类号： H04J14/0256 ,  H04J14/0212 ,  H04J14/0257 ,  H04J14/026 ,  H04J14/0298

摘要： According to an aspect of an embodiment, a method of spectrum defragmentation in an optical network may include assigning an optical signal within an optical network to a first frequency slot that spans a first portion of an optical spectrum of the optical network. The method may also include constructing a frequency slot dependency map based on the assignation of the optical signal to the frequency slot. The method may also include reassigning, as a result of an optical signal departure event, the optical signal to a second frequency slot based on the frequency slot dependency map. The second frequency slot may span a second portion of the optical spectrum of the optical network.

摘要翻译： 根据实施例的一个方面，光网络中的频谱碎片整理的方法可以包括将光网络内的光信号分配到跨越光网络的光谱的第一部分的第一频率时隙。 该方法还可以包括基于将光信号分配给频率隙来构建频率间隙依赖关系图。 该方法还可以包括根据光信号离开事件将光信号重新分配到基于频率槽依赖性映射的第二时隙。 第二频隙可以跨越光网络的光谱的第二部分。

公开(公告)号：US08989581B2

公开(公告)日：2015-03-24

申请号：US13427754

申请日：2012-03-22

申请人： Inwoong Kim ,  Paparao Palacharla ,  Xi Wang ,  Motoyoshi Sekiya

发明人： Inwoong Kim ,  Paparao Palacharla ,  Xi Wang ,  Motoyoshi Sekiya

IPC分类号： H04J14/02 ,  H04B10/572

CPC分类号： H04B10/572

摘要： An optical network for reassigning a carrier wavelength of an optical signal may include first and second optical nodes. The first optical node may be configured to transmit an optical signal along an optical path. The first optical node may also be configured to tune a carrier wavelength of the optical signal from a first wavelength to a second wavelength, according to a continuous function, to reassign the carrier wavelength of the optical signal. The second optical node may be configured to receive the optical signal and may include a feedback loop configured to adjust a wavelength of a reference optical signal to approximate the carrier wavelength of the optical signal.

摘要翻译： 用于重新分配光信号的载波波长的光网络可以包括第一和第二光节点。 第一光节点可以被配置为沿着光路传输光信号。 第一光节点还可以被配置为根据连续功能将光信号的载波波长从第一波长调谐到第二波长，以重新分配光信号的载波波长。 第二光节点可以被配置为接收光信号，并且可以包括被配置为调整参考光信号的波长以近似光信号的载波波长的反馈回路。

公开(公告)号：US08942114B2

公开(公告)日：2015-01-27

申请号：US13165352

申请日：2011-06-21

申请人： Xi Wang ,  Inwoong Kim ,  Qiong Zhang ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Xi Wang ,  Inwoong Kim ,  Qiong Zhang ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： H04L12/26 ,  H04L12/28

CPC分类号： H04L43/0882

摘要： A system and method are provided for monitoring traffic in a network comprising a plurality of links, wherein each of the plurality of links comprises a plurality of neighboring pairs of slots. The system and method may include identifying a first usage status and a second usage status, calculating a utilization entropy value based at least on the difference between the first and second usage status, iteratively calculating a set of utilization entropy values for a portion of the network, and calculating an overall utilization entropy value for the portion of the network under analysis based at least on a statistical analysis of the set of utilization entropy values.

摘要翻译： 提供了一种用于监视包括多个链路的网络中的业务的系统和方法，其中所述多个链路中的每一个包括多个相邻的时隙对。 系统和方法可以包括识别第一使用状态和第二使用状态，至少基于第一和第二使用状态之间的差异来计算使用熵值，迭代地计算网络的一部分的一组利用熵值 以及至少基于所述利用熵值集合的统计分析来计算所分析的网络的部分的总利用熵值。

公开(公告)号：US20120328286A1

公开(公告)日：2012-12-27

申请号：US13165352

申请日：2011-06-21

申请人： Xi Wang ,  Inwoong Kim ,  Qiong Zhang ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Xi Wang ,  Inwoong Kim ,  Qiong Zhang ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： H04B17/00 ,  H04L12/26

CPC分类号： H04L43/0882

摘要： A system and method are provided for monitoring traffic in a network comprising a plurality of links, wherein each of the plurality of links comprises a plurality of neighboring pairs of slots. The system and method may include identifying a first usage status and a second usage status, calculating a utilization entropy value based at least on the difference between the first and second usage status, iteratively calculating a set of utilization entropy values for a portion of the network, and calculating an overall utilization entropy value for the portion of the network under analysis based at least on a statistical analysis of the set of utilization entropy values.

摘要翻译： 提供了一种用于监视包括多个链路的网络中的业务的系统和方法，其中所述多个链路中的每一个包括多个相邻的时隙对。 系统和方法可以包括识别第一使用状态和第二使用状态，至少基于第一和第二使用状态之间的差异来计算使用熵值，迭代地计算网络的一部分的一组利用熵值 以及至少基于所述利用熵值集合的统计分析来计算所分析的网络的部分的总利用熵值。

公开(公告)号：US20120263455A1

公开(公告)日：2012-10-18

申请号：US13175154

申请日：2011-07-01

申请人： Xi Wang ,  Qiong Zhang ,  Inwoong Kim ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Xi Wang ,  Qiong Zhang ,  Inwoong Kim ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： H04B17/00

CPC分类号： H04J14/026 ,  H04J14/0224 ,  H04J14/0257

摘要： In accordance with embodiments of the present disclosure, a method may include determining individual spectrum requirements for each of a plurality of signals to be communicated in an optical network, wherein a first signal of the plurality of signals has a first spectrum requirement and a second signal of the plurality of signals has a second spectrum requirement. The method may also include calculating a minimum spectrum granularity based on the individual spectrum requirements. The method may further include assigning each particular signal a channel spectrum equal to an integer multiple of the minimum spectrum granularity.

摘要翻译： 根据本公开的实施例，一种方法可以包括确定要在光网络中传送的多个信号中的每个信号的各个频谱要求，其中多个信号中的第一信号具有第一频谱要求和第二信号 的多个信号具有第二频谱要求。 该方法还可以包括基于各个频谱要求来计算最小频谱粒度。 该方法还可以包括将每个特定信号分配为等于最小频谱粒度的整数倍的信道频谱。

公开(公告)号：US08909049B2

公开(公告)日：2014-12-09

申请号：US13175154

申请日：2011-07-01

申请人： Xi Wang ,  Qiong Zhang ,  Inwoong Kim ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Xi Wang ,  Qiong Zhang ,  Inwoong Kim ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： H04B10/00 ,  H04J14/02

CPC分类号： H04J14/026 ,  H04J14/0224 ,  H04J14/0257

摘要： In accordance with embodiments of the present disclosure, a method may include determining individual spectrum requirements for each of a plurality of signals to be communicated in an optical network, wherein a first signal of the plurality of signals has a first spectrum requirement and a second signal of the plurality of signals has a second spectrum requirement. The method may also include calculating a minimum spectrum granularity based on the individual spectrum requirements. The method may further include assigning each particular signal a channel spectrum equal to an integer multiple of the minimum spectrum granularity.

摘要翻译： 根据本公开的实施例，一种方法可以包括确定要在光网络中传送的多个信号中的每个信号的各个频谱要求，其中多个信号中的第一信号具有第一频谱要求和第二信号 的多个信号具有第二频谱要求。 该方法还可以包括基于各个频谱要求来计算最小频谱粒度。 该方法还可以包括将每个特定信号分配为等于最小频谱粒度的整数倍的信道频谱。

公开(公告)号：US08559829B2

公开(公告)日：2013-10-15

申请号：US13176643

申请日：2011-07-05

申请人： Inwoong Kim ,  Paparao Palacharla ,  Xi Wang ,  Motoyoshi Sekiya

发明人： Inwoong Kim ,  Paparao Palacharla ,  Xi Wang ,  Motoyoshi Sekiya

IPC分类号： H04B10/06 ,  H04J14/00

CPC分类号： H04B10/6165 ,  H04B10/616 ,  H04L27/2697

摘要： In accordance with some embodiments of the present disclosure a method for receiving and processing an optical orthogonal frequency-division multiplexed signal containing a plurality of traffics comprises receiving the optical orthogonal frequency-division multiplexed signal. The method further comprises down-converting the optical orthogonal frequency-division multiplexed signal into the electrical domain to obtain an electrical signal; filtering the electrical signal to obtain a first portion of the electrical signal containing a first of the plurality of traffics and preprocessing the first portion of the electrical signal in a first parallel preprocessor; filtering the electrical signal to obtain a second portion of the electrical signal containing a second of the plurality of traffics and preprocessing the second portion of the electrical signal in a second parallel preprocessor; and combining the preprocessed first and second portions of the electrical signal to yield a combined electrical signal and demodulating the combined electrical signal.

摘要翻译： 根据本公开的一些实施例，用于接收和处理包含多个业务的光学正交频分复用信号的方法包括：接收光学正交频分复用信号。 该方法还包括将光正交频分多路复用信号下变频为电域以获得电信号; 过滤电信号以获得包含多个业务中的第一业务并且在第一并行预处理器中预处理电信号的第一部分的电信号的第一部分; 过滤电信号以获得包含多个业务中的第二业务的电信号的第二部分，并在第二并行预处理器中预处理电信号的第二部分; 以及组合电信号的预处理的第一和第二部分以产生组合的电信号并解调组合的电信号。

公开(公告)号：US20130011138A1

公开(公告)日：2013-01-10

申请号：US13176643

申请日：2011-07-05

申请人： Inwoong Kim ,  Paparao Palacharla ,  Xi Wang ,  Motoyoshi Sekiya

发明人： Inwoong Kim ,  Paparao Palacharla ,  Xi Wang ,  Motoyoshi Sekiya

IPC分类号： H04J14/00

CPC分类号： H04B10/6165 ,  H04B10/616 ,  H04L27/2697

摘要： In accordance with some embodiments of the present disclosure a method for receiving and processing an optical orthogonal frequency-division multiplexed signal containing a plurality of traffics comprises receiving the optical orthogonal frequency-division multiplexed signal. The method further comprises down-converting the optical orthogonal frequency-division multiplexed signal into the electrical domain to obtain an electrical signal; filtering the electrical signal to obtain a first portion of the electrical signal containing a first of the plurality of traffics and preprocessing the first portion of the electrical signal in a first parallel preprocessor; filtering the electrical signal to obtain a second portion of the electrical signal containing a second of the plurality of traffics and preprocessing the second portion of the electrical signal in a second parallel preprocessor; and combining the preprocessed first and second portions of the electrical signal to yield a combined electrical signal and demodulating the combined electrical signal.

摘要翻译： 根据本公开的一些实施例，用于接收和处理包含多个业务的光学正交频分复用信号的方法包括：接收光学正交频分复用信号。 该方法还包括将光正交频分多路复用信号下变频为电域以获得电信号; 过滤电信号以获得包含多个业务中的第一业务并且在第一并行预处理器中预处理电信号的第一部分的电信号的第一部分; 过滤电信号以获得包含多个业务中的第二业务的电信号的第二部分，并在第二并行预处理器中预处理电信号的第二部分; 以及组合电信号的预处理的第一和第二部分以产生组合的电信号并解调组合的电信号。

公开(公告)号：US09344190B2

公开(公告)日：2016-05-17

申请号：US14120298

申请日：2014-05-14

申请人： Inwoong Kim ,  Olga Vassilieva ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Inwoong Kim ,  Olga Vassilieva ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： H04B10/079 ,  H04B10/2507 ,  H04B10/2531

CPC分类号： H04B10/07953 ,  H04B10/2531 ,  H04B10/2543

摘要： Methods and systems are provided for flexible placement of spectral inverters in an optical network. The method includes identifying a first transmission path coupling a transmitter and a receiver. The first transmission path includes a first node for assignment of a first spectral inverter. The method further includes estimating a first optical signal-to-noise ratio (OSNR) penalty of nonlinear phase noise (NLPN) on the first transmission path with the first spectral inverter assigned to the first node, and based on the first estimated OSNR penalty of NLPN being less than an NLPN penalty threshold, assigning the first spectral inverter to the first node.

公开(公告)号：US20150333825A1

公开(公告)日：2015-11-19

申请号：US14120298

申请日：2014-05-14

申请人： Inwoong Kim ,  Olga Vassilieva ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Inwoong Kim ,  Olga Vassilieva ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： H04B10/079

CPC分类号： H04B10/07953 ,  H04B10/2531 ,  H04B10/2543

摘要： Methods and systems are provided for flexible placement of spectral inverters in an optical network. The method includes identifying a first transmission path coupling a transmitter and a receiver. The first transmission path includes a first node for assignment of a first spectral inverter. The method further includes estimating a first optical signal-to-noise ratio (OSNR) penalty of nonlinear phase noise (NLPN) on the first transmission path with the first spectral inverter assigned to the first node, and based on the first estimated OSNR penalty of NLPN being less than an NLPN penalty threshold, assigning the first spectral inverter to the first node.

摘要翻译： 提供的方法和系统用于光谱逆变器在光网络中的灵活放置。 该方法包括识别耦合发射机和接收机的第一传输路径。 第一传输路径包括用于分配第一频谱反相器的第一节点。 该方法还包括：估计第一传输路径上的非线性相位噪声（NLPN）的第一光信噪比（OSNR）损耗与分配给第一节点的第一频谱逆变器，并且基于第一估计的OSNR惩罚 NLPN小于NLPN惩罚阈值，将第一频谱逆变器分配给第一节点。