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1.发明授权Architectures for evolving traditional service provider networks and methods of optimization therefor 失效用于演进传统服务提供商网络的架构及其优化方法公开(公告)号：US07649847B2
公开(公告)日：2010-01-19
申请号：US11031715
申请日：2005-01-07
Applicant: Humair Raza , Ra'ed Awdeh , Kesavamurthy Nagaraj
Inventor： Humair Raza , Ra'ed Awdeh , Kesavamurthy Nagaraj
Abstract: The present invention discloses novel network architectures for evolving traditional service provider networks. The network architecture of the invention has a transport layer including an optical network. At least one node of the network architecture includes a large packet switch that is coupled to the transport layer and to an access layer. The large packet switch aggregates a plurality of services from the access layer. The large packet switch also performs packet level grooming of the information from the services prior to transport of the information via the transport layer. The optical network performs restoration for the network architecture. In one embodiment, the optical network is an optical ring network including at least one optical switch and restoration is performed at the layer-0 (optical layer). In another embodiment, the optical network is a bi-directional line-switched ring (BLSR) utilizing a Synchronous Optical Network (SONET) standard and restoration is performed by the layer-1 (SONET layer). The network architectures of the invention by utilizing a large packet switch to perform service aggregation and packet level grooming, and by performing restoration either at the layer-0 (optical layer) or layer-1 (SONET layer), creates a single converged network that achieves the superior restoration performance needed for carrier grade availability but at much lower costs than traditional service providers which operate multiple overlay networks. Also disclosed are methods to optimize traditional service provider networks and the disclosed novel architectures of the invention.
Abstract translation: 本发明公开了用于演进传统服务提供商网络的新型网络架构。 本发明的网络架构具有包括光网络的传输层。 网络架构的至少一个节点包括耦合到传输层和接入层的大分组交换机。 大分组交换机从接入层聚合多个业务。 在通过传输层传送信息之前，大分组交换机还对来自服务的信息执行分组级整理。 光网络对网络架构进行恢复。 在一个实施例中，光网络是包括至少一个光学交换机的光环网络，并且在层0（光学层）处执行恢复。 在另一个实施例中，光网络是利用同步光网络（SONET）标准的双向线路交换环（BLSR），并且由层-1（SONET层）执行恢复。 通过利用大分组交换机执行业务聚合和分组级整理，以及通过在第0层（光层）或第1层（SONET层）上执行恢复，本发明的网络架构创建了单个融合网络， 实现了运营商级可用性所需的出色的恢复性能，但是成本比传统的运营多个覆盖网络的服务提供商低得多。 还公开了优化传统服务提供商网络和所公开的本发明的新颖体系结构的方法。
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公开(公告)号：US06735392B1
公开(公告)日：2004-05-11
申请号：US09420329
申请日：1999-10-18
Applicant: Siraj Elahmadi , Paul A. Bullock , Nigel Baker , Kesavamurthy Nagaraj
Inventor： Siraj Elahmadi , Paul A. Bullock , Nigel Baker , Kesavamurthy Nagaraj
IPC: G02F100
CPC classification number: H04J14/0295 , H04J14/0227 , H04J14/0241 , H04J14/0283 , H04J14/0286 , H04Q11/0062 , H04Q2011/0011 , H04Q2011/0081 , H04Q2011/0092
Abstract: A system and method for transmitting and restoring an optical signal in an optical ring is presented. The optical ring comprises a plurality of nodes, each node containing an optical cross connect switching fabric coupled to a data switch. The optical cross connect switching fabric and the data switch are coupled to a short reach side of a wavelength translation device. A long reach side of the wavelength translation device is coupled to a dense wave division multiplex (DWDM) coupler. The optical cross connect switching fabric and the data switch include a protect channel and a working channel for transporting the optical signal. The wavelength translation device receives the optical signal at a high speed rate, where the optical signal is a short reach optical signal and originates from a high speed interface on the data switch. The wavelength translation device then maps the short reach optical signal into a long reach DWDM optical signal at the high speed rate and forwards, via the DWDM coupler, the long reach optical signal to an adjacent DWDM coupler located at an adjacent node. If a link failure occurs and has not recovered, and the protect channel is not available, optical cross connect switching fabrics at adjacent nodes on each side of the failed link switch the optical signal to an alternate diverse protect port. An optical pass through of the switched optical signal between any transit nodes in the optical ring is then configured resulting in a restoration path for the working channel.
Abstract translation: 提出了一种在光环中发送和恢复光信号的系统和方法。 光环包括多个节点，每个节点包含耦合到数据交换机的光交叉连接交换结构。 光交叉连接交换结构和数据交换机耦合到波长转换设备的短距离侧。 波长转换装置的长距离侧耦合到密集波分复用（DWDM）耦合器。 光交叉交换结构和数据交换机包括保护信道和用于传输光信号的工作信道。 波长转换装置以高速率接收光信号，其中光信号是短距离光信号，并且来自数据交换机上的高速接口。 然后，波长转换装置将短距离光信号以高速率映射成长距离DWDM光信号，并通过DWDM耦合器将长距离光信号转发到位于相邻节点的相邻DWDM耦合器。 如果链路故障发生并且没有恢复，并且保护信道不可用，则在故障链路的每一侧的相邻节点处的光交叉连接交换结构将光信号切换到备用的多样保护端口。 然后，在光环中的任何传输节点之间光交换光交换光路，从而产生用于工作信道的恢复路径。
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3.发明授权Apparatus and method for restoring fiber optic communications network connections 失效用于恢复光纤通信网络连接的装置和方法
公开(公告)号：US06483803B1
公开(公告)日：2002-11-19
申请号：US08893433
申请日：1997-07-11
Applicant: Siraj Nour Elahmadi , Paul Arthur Bullock , Kesavamurthy Nagaraj
Inventor： Siraj Nour Elahmadi , Paul Arthur Bullock , Kesavamurthy Nagaraj
IPC: G01R3108
CPC classification number: H04B10/032 , H04J14/0279 , H04J14/0283 , H04J14/0289 , H04J14/0291 , H04J14/0293 , H04J14/0297
Abstract: A system and method for connecting traffic along a communications network is accomplished by rerouting traffic upon the detection of a fault condition along a primary connection path. Signals are divided into different wavelength regions labeled red and blue, respectively. The wavelength bands between transmit and receive channels are alternated between red and blue band regions and then combined, multiplexed or “bundled” together by a wideband wavelength division multiplexer in a single non wavelength specific transmission medium for connection to a single uni-directional Optical Cross Connect System (OCCS) port. Additionally, the receiving end of a single medium is connected to a wavelength division multiplexer which unbundles the combined red and blue band signals upon reception.
Abstract translation: 沿着通信网络连接业务的系统和方法是通过在沿着主连接路径检测到故障状态时重新路由业务来实现的。 信号分为不同的波长区域，分别标记为红色和蓝色。 发射和接收信道之间的波长带在红色和蓝色带区域之间交替，然后由宽带波分复用器在单个非波长特定传输介质中组合，复用或“捆绑”在一起，以连接到单个单向光学交叉 连接系统（OCCS）端口。 此外，单个介质的接收端连接到波分多路复用器，其在接收时解除组合的红色和蓝色频带信号的捆绑。
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4.发明授权Architectures for evolving traditional service provider networks and methods of optimization therefor 失效用于演进传统服务提供商网络的架构及其优化方法
公开(公告)号：US06870813B1
公开(公告)日：2005-03-22
申请号：US09658530
申请日：2000-09-07
Applicant: Humair Raza , Ra'ed Awdeh , Kesavamurthy Nagaraj
Inventor： Humair Raza , Ra'ed Awdeh , Kesavamurthy Nagaraj
Abstract: The present invention discloses novel network architectures for evolving traditional service provider networks. The network architecture of the invention has a transport layer including an optical network. At least one node of the network architecture includes a large packet switch that is coupled to the transport layer and to an access layer. The large packet switch aggregates a plurality of services from the access layer. The large packet switch also performs packet level grooming of the information from the services prior to transport of the information via the transport layer. The optical network performs restoration for the network architecture. In one embodiment, the optical network is an optical ring network including at least one optical switch and restoration is performed at the layer-0 (optical layer). In another embodiment, the optical network is a bi-directional line-switched ring (BLSR) utilizing a Synchronous Optical Network (SONET) standard and restoration is performed by the layer-1 (SONET layer). The network architectures of the invention by utilizing a large packet switch to perform service aggregation and packet level grooming, and by performing restoration either at the layer-0 (optical layer) or layer-1 (SONET layer), creates a single converged network that achieves the superior restoration performance needed for carrier grade availability but at much lower costs than traditional service providers which operate multiple overlay networks. Also disclosed are methods to optimize traditional service provider networks and the disclosed novel architectures of the invention.
Abstract translation: 本发明公开了用于演进传统服务提供商网络的新型网络架构。 本发明的网络架构具有包括光网络的传输层。 网络架构的至少一个节点包括耦合到传输层和接入层的大分组交换机。 大分组交换机从接入层聚合多个业务。 在通过传输层传送信息之前，大分组交换机还对来自服务的信息执行分组级整理。 光网络对网络架构进行恢复。 在一个实施例中，光网络是包括至少一个光学交换机的光环网络，并且在层0（光学层）处执行恢复。 在另一个实施例中，光网络是利用同步光网络（SONET）标准的双向线路交换环（BLSR），并且由层-1（SONET层）执行恢复。 通过利用大分组交换机执行业务聚合和分组级整理，以及通过在第0层（光层）或第1层（SONET层）上执行恢复，本发明的网络架构创建了单个融合网络， 实现了运营商级可用性所需的出色的恢复性能，但是成本比传统的运营多个覆盖网络的服务提供商低得多。 还公开了优化传统服务提供商网络和所公开的本发明的新颖体系结构的方法。
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公开(公告)号：US6104719A
公开(公告)日：2000-08-15
申请号：US994740
申请日：1997-12-19
Applicant: Wei Henry Chang , Basudeb Dash , Kesavamurthy Nagaraj , Natarajan Govindirajan
Inventor： Wei Henry Chang , Basudeb Dash , Kesavamurthy Nagaraj , Natarajan Govindirajan
CPC classification number: H04L29/06 , H04L69/03 , H04L69/324
Abstract: A system and method for supporting concurrent message streams. The state machine is used for modeling a digital system having several states. The states represent messages in the digital system. Added to the state machine is a regressive state. The regressive state is connected to each of the states and all transitions between the states go through the regressive state. Also, queues are provided with the state machine to facilitate the concurrent message streams. A queue may be provided with each state so that if multiple message streams are at a single state, they may be stored in the queue provided with the state. Alternatively, a queue may be provided with each message stream so that each queue can keep track of the state at which the corresponding message stream is located.
Abstract translation: 一种用于支持并发消息流的系统和方法。 状态机用于对具有多个状态的数字系统进行建模。 状态表示数字系统中的消息。 添加到状态机是一个回归状态。 回归状态连接到每个状态，并且状态之间的所有转换都经历回归状态。 此外，状态机提供队列以便于并发消息流。 可以为每个状态提供队列，使得如果多个消息流处于单个状态，则它们可以存储在与该状态一起提供的队列中。 或者，可以为每个消息流提供队列，使得每个队列可以跟踪对应的消息流所在的状态。
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公开(公告)号：US20050122968A1
公开(公告)日：2005-06-09
申请号：US11031715
申请日：2005-01-07
Applicant: Humair Raza , Ra'ed Awdeh , Kesavamurthy Nagaraj
Inventor： Humair Raza , Ra'ed Awdeh , Kesavamurthy Nagaraj
Abstract: The present invention discloses novel network architectures for evolving traditional service provider networks. The network architecture of the invention has a transport layer including an optical network. At least one node of the network architecture includes a large packet switch that is coupled to the transport layer and to an access layer. The large packet switch aggregates a plurality of services from the access layer. The large packet switch also performs packet level grooming of the information from the services prior to transport of the information via the transport layer. The optical network performs restoration for the network architecture. In one embodiment, the optical network is an optical ring network including at least one optical switch and restoration is performed at the layer-0 (optical layer). In another embodiment, the optical network is a bi-directional line-switched ring (BLSR) utilizing a Synchronous Optical Network (SONET) standard and restoration is performed by the layer-1 (SONET layer). The network architectures of the invention by utilizing a large packet switch to perform service aggregation and packet level grooming, and by performing restoration either at the layer-0 (optical layer) or layer-1 (SONET layer), creates a single converged network that achieves the superior restoration performance needed for carrier grade availability but at much lower costs than traditional service providers which operate multiple overlay networks. Also disclosed are methods to optimize traditional service provider networks and the disclosed novel architectures of the invention.
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公开(公告)号：US6154296A
公开(公告)日：2000-11-28
申请号：US964823
申请日：1997-11-05
Applicant: Siraj Nour Elahmadi , Paul A. Bullock , Kesavamurthy Nagaraj , Thomas Flanagan
Inventor： Siraj Nour Elahmadi , Paul A. Bullock , Kesavamurthy Nagaraj , Thomas Flanagan
IPC: H04B10/00 , H04B10/213 , H04J3/08 , H04B10/08
CPC classification number: H04B10/271 , H04B10/032 , H04B10/27 , H04B10/275 , H04J3/085
Abstract: An optical communications network configured in a shared protect capacity architecture. The network includes a plurality of shared and unshared nodes; a plurality of working lines connecting the plurality of nodes to form a ring that shares two or more nodes with another ring; a shared protect fiber optic line connecting the two shared nodes; and a plurality of protect lines connecting the plurality of unshared nodes which are connected by the plurality of working lines. By optically coupling a first Add-Drop Multiplexer of a first shared node to a first port of an optical cross connect using a first connecting path; optically coupling a second Add-Drop Multiplexer of the first shared node to a second port of the optical cross connect using a second connecting path; and optically coupling a third port of the Optical Cross Connect to a second shared node through a shared protect path, both rings may use the shared protect path to re-route traffic therethrough in the event that one of the rings has a break which severs the working and protect lines which couple two of the nodes thereof. The reduction in the quantity of protect lines, hence the fiber, and the equipment resulting in the associated cost savings are transparent to bit or baud rate, type of optical fiber, and signal format.
Abstract translation: 配置在共享保护能力架构中的光通信网络。 网络包括多个共享和非共享节点; 连接所述多个节点以形成与另一个环共享两个或多个节点的环的多条工作线; 连接两个共享节点的共享保护光纤线路; 以及连接由所述多个工作线连接的所述多个非共享节点的多条保护线。 通过使用第一连接路径将第一共享节点的第一插入多路复用器光耦合到光交叉连接的第一端口; 使用第二连接路径将所述第一共享节点的第二插入多路复用器光耦合到所述光交叉连接的第二端口; 并且通过共享保护路径光学地将光交叉连接的第三端口耦合到第二共享节点，两个环可以使用共享保护路径来重新路由业务，如果其中一个环具有断开， 工作和保护耦合其两个节点的线路。 保护线路数量的减少，从而导致光纤和相关成本节省的设备对位或波特率，光纤类型和信号格式都是透明的。
