公开(公告)号：US08965198B2

公开(公告)日：2015-02-24

申请号：US13658587

申请日：2012-10-23

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

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

IPC分类号： H04B10/00

CPC分类号： H04J14/0284 ,  H04J14/0212 ,  H04J14/0217 ,  H04J14/0268

摘要： A method for shared mesh restoration includes configuring a switch to allow sharing of a plurality of backup line cards across a plurality of node degrees associated with a reconfigurable optical add/drop multiplexer (ROADM). The switch is communicatively coupled to the ROADM. The method further includes configuring a number of backup line cards coupled to the switch. The number of backup line cards is based on determining a number of active backup lightpaths for each of a plurality of network failures associated with each of the plurality of node degrees of the ROADM, identifying which node degree and failure has the largest number of active backup lightpaths for all of the plurality of node degrees of the ROADM and for each of the plurality of network failures, and determining the number of backup line cards to configure based on the identified largest number of active backup lightpaths.

摘要翻译： 一种用于共享网格恢复的方法包括配置交换机以允许在与可重配置光分插复用器（ROADM）相关联的多个节点度上共享多个备用线卡。 交换机通信耦合到ROADM。 该方法还包括配置耦合到交换机的多个备用线路卡。 备用线路卡的数量基于确定与ROADM的多个节点度中的每一个相关联的多个网络故障中的每一个的主动备用光路的数量，识别哪个节点度和故障具有最大数量的主动备份 用于ROADM的所有多个节点度数和多个网络故障中的每一个的光路，以及基于所识别的最大数量的主动备用光路确定要配置的备用线路卡的数量。

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：US08346965B2

公开(公告)日：2013-01-01

申请号：US12942586

申请日：2010-11-09

申请人： Qiong Zhang ,  Paparao Palacharla ,  Qingya She ,  Xi Wang ,  Motoyoshi Sekiya

发明人： Qiong Zhang ,  Paparao Palacharla ,  Qingya She ,  Xi Wang ,  Motoyoshi Sekiya

IPC分类号： G06F15/16

CPC分类号： H04J14/0257 ,  H04J14/0212

摘要： A method may include constructing an auxiliary graph for a network comprising a plurality of network elements, the network elements having an Internet Protocol layer, a lower layer, and a wavelength layer, the auxiliary graph including a plurality of directed edges, the plurality of directed edges indicative of connectivity of components of the plurality of network elements. The method may further include: (i) deleting directed edges from the auxiliary graph whose available bandwidth is lower than the required bandwidth of a selected demand; (ii) finding a path for the demand on the auxiliary graph via remaining directed edges; (iii) deleting at least one directed edge of the auxiliary graph on the wavelength layer along the path; (iv) adding lower layer lightpath edges to the auxiliary graph for a lower layer lightpath for the path; and (v) converting lower layer lightpaths to Internet Protocol lightpaths if a conversion condition is satisfied.

摘要翻译： 方法可以包括为包括多个网络元件的网络构建辅助图形，所述网络元件具有互联网协议层，下层和波长层，所述辅助图形包括多个有向边缘，所述多个定向 指示多个网络元件的组件的连接性的边缘。 该方法还可以包括：（i）从可用带宽低于所选择的需求的所需带宽的辅助图中删除有向边; （ii）通过剩余的有向边找到对辅助图的需求的路径; （iii）沿所述路径删除所述波长层上的辅助图形的至少一个有向边缘; （iv）将下层光路边缘添加到辅助图形，用于路径的下层光路; 和（v）如果满足转换条件，则将下层光路转换为因特网协议光路。

公开(公告)号：US09154858B2

公开(公告)日：2015-10-06

申请号：US13585663

申请日：2012-08-14

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

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

IPC分类号： G06G7/48 ,  H04Q11/00 ,  H04J14/00 ,  H04L12/24

CPC分类号： H04Q11/00 ,  H04J14/00 ,  H04L41/142 ,  H04L41/145 ,  H04Q2213/13164 ,  H04Q2213/13335

摘要： An optical network analysis tool includes a computer-readable storage medium having computer-readable instructions stored thereon. The computer-readable instructions are executable by a computing device to perform operations. The operations include generating a simulated network that models an optical network. The simulated network includes regenerator candidate sites. The operations may also include conducting an analysis of the optical network. The analysis includes introducing a multiple signals transmitted between source/destination pairs and recording a number of times each of the regenerator candidate sites are selected as a regenerator site while applying each of a set of data traffic conditions in the simulated network. The operations may also include statistically analyzing the number of times each of the regenerator candidate sites is selected to generate statistically analyzed information and presenting the statistically analyzed information.

摘要翻译： 光网络分析工具包括其上存储有计算机可读指令的计算机可读存储介质。 计算机可读指令可由计算设备执行以执行操作。 这些操作包括生成模拟光网络的模拟网络。 模拟网络包括再生器候选站点。 这些操作还可以包括进行光网络的分析。 该分析包括引入在源/目的地对之间传输的多个信号，并且在将模拟网络中的一组数据业务条件应用中的每一个的同时，将每个再生器候选站点选择为多个次数作为再生站站点进行记录。 操作还可以包括统计分析每个再生器候选位点被选择以产生统计分析的信息并呈现统计分析的信息的次数。

公开(公告)号：US20120117269A1

公开(公告)日：2012-05-10

申请号：US12942586

申请日：2010-11-09

申请人： Qiong Zhang ,  Paparao Palacharla ,  Qingya She ,  Xi Wang ,  Motoyoshi Sekiya

发明人： Qiong Zhang ,  Paparao Palacharla ,  Qingya She ,  Xi Wang ,  Motoyoshi Sekiya

IPC分类号： G06F15/173

CPC分类号： H04J14/0257 ,  H04J14/0212

摘要： A method may include constructing an auxiliary graph for a network comprising a plurality of network elements, the network elements having an Internet Protocol layer, a lower layer, and a wavelength layer, the auxiliary graph including a plurality of directed edges, the plurality of directed edges indicative of connectivity of components of the plurality of network elements. The method may further include: (i) deleting directed edges from the auxiliary graph whose available bandwidth is lower than the required bandwidth of a selected demand; (ii) finding a path for the demand on the auxiliary graph via remaining directed edges; (iii) deleting at least one directed edge of the auxiliary graph on the wavelength layer along the path; (iv) adding lower layer lightpath edges to the auxiliary graph for a lower layer lightpath for the path; and (v) converting lower layer lightpaths to Internet Protocol lightpaths if a conversion condition is satisfied.

摘要翻译： 方法可以包括为包括多个网络元件的网络构建辅助图形，所述网络元件具有互联网协议层，下层和波长层，所述辅助图形包括多个有向边缘，所述多个定向 指示多个网络元件的组件的连接性的边缘。 该方法还可以包括：（i）从可用带宽低于所选择的需求的所需带宽的辅助图中删除有向边; （ii）通过剩余的有向边找到对辅助图的需求的路径; （iii）沿所述路径删除所述波长层上的辅助图形的至少一个有向边缘; （iv）将下层光路边缘添加到辅助图形，用于路径的下层光路; 和（v）如果满足转换条件，则将下层光路转换为因特网协议光路。

公开(公告)号：US20130089317A1

公开(公告)日：2013-04-11

申请号：US13348915

申请日：2012-01-12

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

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

IPC分类号： H04B10/00 ,  H04J14/00

CPC分类号： H04Q11/0062 ,  H04J14/0284 ,  H04J14/0295 ,  H04L41/0654 ,  H04Q2011/0081

摘要： In accordance with embodiments of the present disclosure, a method may include sorting potential optical layer link failures in a network in an increasing order of failed traffic amount. The method may further include, for each potential optical link failure in increasing order of failed traffic amount: determining the additional higher layer link capacity required on existing higher layer links associated with the potential optical link failure using higher layer restoration of the potential optical link failure; determining the additional optical layer capacity required for restoring the existing higher layer links associated with the potential optical link failure using optical layer restoration; and selecting one of the higher layer and the optical layer as a restoration layer for restoration of the existing higher layer links associated with the potential optical link failure based on the determined additional higher layer link capacity and the determined additional optical layer capacity.

摘要翻译： 根据本公开的实施例，一种方法可以包括按照故障业务量的增加顺序对网络中的潜在光层链路故障进行排序。 该方法还可以包括：针对每个潜在的光链路故障以增加的故障业务量的顺序：使用更高层恢复潜在光链路故障来确定与潜在光链路故障相关联的现有较高层链路上所需的附加较高层链路容量 ; 使用光学层恢复来确定恢复与潜在光链路故障相关联的现有较高层链路所需的附加光层容量; 并且基于所确定的附加较高层链路容量和所确定的附加光层容量，选择较高层和光层之一作为恢复层，用于恢复与潜在光链路故障相关联的现有较高层链路。

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：US09014559B2

公开(公告)日：2015-04-21

申请号：US13116710

申请日：2011-05-26

申请人： Qiong Zhang ,  Paparao Palacharla ,  Motoyoshi Sekiya

发明人： Qiong Zhang ,  Paparao Palacharla ,  Motoyoshi Sekiya

IPC分类号： G02F1/00 ,  G02F2/00 ,  H01S3/00 ,  H04B10/00 ,  H04J14/00 ,  H04J3/16 ,  H04J3/14

CPC分类号： H04J3/1652 ,  H04J3/14

摘要： In accordance with some embodiments of the present disclosure a method for shared mesh protection in an optical transport network comprises provisioning a route for each of a plurality of working demands through the optical transport network. The method further comprises provisioning a route for backup demands corresponding to each of the plurality of working demands. The method additionally comprises packing into a single optical data unit a first backup demand corresponding to a first of the plurality of working demands and a second backup demand corresponding to a second of the plurality of working demands, wherein the first and second of the plurality of working demands share at least one common link in the optical transport network. The method also comprises unpacking the first and second backup demands from the optical data unit.

摘要翻译： 根据本公开的一些实施例，用于光传送网络中的共享网格保护的方法包括通过光传输网络为多个工作需求中的每个提供路由。 该方法还包括为与多个工作需求中的每一个相对应的备份需求提供路由。 该方法还包括将单个光学数据单元包装成与多个工作需求中的第一个相对应的第一备份需求和对应于多个工作需求中的第二个的第二备份需求，其中多个 工作需求在光传输网络中共享至少一个公共链路。 该方法还包括从光学数据单元解包第一和第二备份需求。