公开(公告)号：US20180035182A1

公开(公告)日：2018-02-01

申请号：US15728751

申请日：2017-10-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dawei Wang ,  Yi Qian

IPC: H04Q11/00

CPC classification number: H04Q11/0005 ,  H04J14/00 ,  H04Q2011/0016 ,  H04Q2011/0049

Abstract: An optical cross-connect node includes a first optical switching switch, a second optical switching switch, a wave-dropping wavelength switching switch, a wave-adding wavelength switching switch, and a pass-through dimension switching switch. The first optical switching switch receives an optical signal, where the optical signal includes a first optical signal and/or a second optical signal. The first optical switching switch sends the first optical signal to the wave-dropping wavelength switching switch. The first optical switching switch sends the second optical signal to the pass-through dimension switching switch. The wave-dropping wavelength switching switch performs wavelength switching on the first optical signal. The wave-adding wavelength switching switch performs wavelength switching on a third optical signal generated locally and sends it to the second optical switching switch. The pass-through dimension switching switch performs dimension switching on the second optical signal and sends, to the second optical switching switch, the second optical signal that has undergone dimension switching.

公开(公告)号：US20160381443A1

公开(公告)日：2016-12-29

申请号：US14844857

申请日：2015-09-03

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hamid Mehrvar ,  Yi Qian

IPC: H04Q11/00 ,  H04L12/725 ,  H04B10/079

CPC classification number: H04L49/357 ,  H04L45/62 ,  H04L47/70 ,  H04Q2011/0049 ,  H04Q2011/0081

Abstract: A method and apparatus for routing signals through a photonic switch are provided. Optical Signal-to-Noise Ratio (OSNR) requirements for signals to be concurrently routed through the switch are determined, and incoming signal routing requests are blocked when routing same would violate OSNR requirements. Blocking may occur when a maximum allowed number M of lightpaths of same wavelength would be exceeded by admitting the request. Otherwise, signals are routed along a lightpath which satisfies the OSNR requirements. Cell Extinction Ratio in conjunction with OSNR requirements can be used to determine M. Switching cells can potentially accommodate multiple lightpaths of different wavelengths, but regular switching cells may be inhibited from accommodating multiple lightpaths of same wavelength. Routing solutions which maximize both cell sharing and cell packing may be sought. Routes that violate crosstalk limitation conditions are inhibited.

Abstract translation: 提供了一种通过光子开关路由信号的方法和装置。 确定通过交换机同时路由的信号的光信噪比（OSNR）要求，当路由相同时，传入信号路由请求将被阻止，这将违反OSNR要求。 通过接受请求可以超过相同波长的光路的最大允许数量M时，可能会发生阻塞。 否则，信号沿满足OSNR要求的光路路由。 细胞消光比结合OSNR要求可以用于确定M.切换单元可以潜在地适应不同波长的多个光路，但是可以禁止规则的开关单元容纳相同波长的多个光路。 可以寻求使细胞共享和细胞包装最大化的路由解决方案。 违反串扰限制条件的路由被禁止。

公开(公告)号：US09491120B2

公开(公告)日：2016-11-08

申请号：US14018273

申请日：2013-09-04

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hamid Mehrvar ,  Yi Qian ,  Patrick Dumais ,  Dominic John Goodwill ,  Eric Bernier

IPC: H04J1/12 ,  H04L12/947 ,  H04Q11/00

CPC classification number: H04L49/25 ,  H04Q11/0005 ,  H04Q2011/0049 ,  H04Q2011/0054

Abstract: Crosstalk can be suppressed in photonic switching fabrics by activating unused photonic elements in a manner that manipulates the inactive connections and inhibits the propagation of cross-talk over the switching fabric. For example, unused photonic elements can be set to a cross or bar configuration to block first and second order crosstalk from propagating to the output ports, thereby reducing noise in the output signals. All of the unused elements can be activated in order to maximize crosstalk suppression. Alternatively, fewer than all of the unused elements may be activated to achieve a balance between crosstalk suppression and power conservation. Photonic switch architectures can be configured to use pre-determined cross-talk suppression maps (e.g., patterns of activated unused cells) for the various switching configurations, which may be computed using a recursive algorithm.

Abstract translation: 通过激活未使用的光子元件，可以通过操纵无效连接并抑制交换结构上的串扰传播的方式来抑制光交换结构中的串扰。 例如，未使用的光子元件可以设置为交叉或条形配置，以阻止第一和第二级串扰从传播到输出端口，从而降低输出信号中的噪声。 可以激活所有未使用的元件，以最大化串扰抑制。 或者，可以激活少于所有未使用的元件以实现串扰抑制和功率节省之间的平衡。 光子开关架构可以被配置为使用可以使用递归算法计算的各种切换配置的预定串扰抑制映射（例如，激活的未使用小区的模式）。

公开(公告)号：US10291971B2

公开(公告)日：2019-05-14

申请号：US15728751

申请日：2017-10-10

Applicant: Huawei Technologies Co., Ltd.

Inventor： Dawei Wang ,  Yi Qian

IPC: H04J14/00 ,  H04Q11/00

Abstract: An optical cross-connect node includes a first optical switching switch, a second optical switching switch, a wave-dropping wavelength switching switch, a wave-adding wavelength switching switch, and a pass-through dimension switching switch. The first optical switching switch receives an optical signal, where the optical signal includes a first optical signal and/or a second optical signal. The first optical switching switch sends the first optical signal to the wave-dropping wavelength switching switch. The first optical switching switch sends the second optical signal to the pass-through dimension switching switch. The wave-dropping wavelength switching switch performs wavelength switching on the first optical signal. The wave-adding wavelength switching switch performs wavelength switching on a third optical signal generated locally and sends it to the second optical switching switch. The pass-through dimension switching switch performs dimension switching on the second optical signal and sends, to the second optical switching switch, the second optical signal that has undergone dimension switching.

公开(公告)号：US09456260B2

公开(公告)日：2016-09-27

申请号：US14530192

申请日：2014-10-31

Applicant: Huawei Technologies Co., Ltd.

Inventor： Hamid Mehrvar ,  Yi Qian ,  Patrick Dumais ,  Dominic John Goodwill ,  Eric Bernier

IPC: H04J1/12 ,  H04Q11/00 ,  H04L12/947 ,  H04L12/931

CPC classification number: H04Q11/0005 ,  H04L49/25 ,  H04L49/40 ,  H04Q2011/0049

Abstract: Recursive optimization algorithms can be used to determine which idle photonic switching elements to configure in N×N switching fabrics to achieve crosstalk suppression. Different algorithms are used to achieve different levels of optimization. Embodiment full optimization techniques may configure all inactive cells to reduce crosstalk, and consequently may provide the best noise performance and highest power usage. Partial optimizations may configure fewer than all inactive cells to reduce crosstalk, and may provide sub-optimal noise performance at lower power usages. Differential partial optimization algorithms configure inactive cells in different stages of a photonic switching fabric. Fewer than all cells in a given stage may be configured by some algorithms.

Abstract translation: 可以使用递归优化算法来确定在N×N个交换结构中配置的空闲光子交换元件以实现串扰抑制。 使用不同的算法来实现不同级别的优化。 实施例的全优化技术可以配置所有非活动单元以减少串扰，从而可以提供最佳的噪声性能和最高功率使用。 部分优化可以配置少于所有非活动单元以减少串扰，并且可以在较低功率使用下提供次优的噪声性能。 差分部分优化算法在光子交换结构的不同阶段配置非活动单元。 可以通过一些算法来配置给定阶段中的所有单元。