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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 4174. Отображено 100.
23-02-2012 дата публикации

Upgraded Bandwidth Map for Ten Gigabit Passive Optical Network

Номер: US20120045200A1
Автор: Frank J. Effenberger, Yuanqiu Luo
Принадлежит: FutureWei Technologies Inc

An apparatus comprising an optical line terminal (OLT) configured to transmit a bandwidth map (BWmap) for a plurality of burst signals to be transmitted by a plurality of optical network units (ONUs), wherein the BWmap comprises a plurality of allocations, and wherein each allocation comprises a start time for the allocation, a grant size for the allocation, and a header error correction (HEC) for the allocation.

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Номер записи: 1
05-04-2012 дата публикации

Method and apparatus for fast passing through services for synchronous digital hierarchy device

Номер: US20120082169A1
Автор: Qing Wu, Xiuguo Wang
Принадлежит: ZTE Corp

The present invention provides a method for fast passing through services in a SDH device including: a protection switching module compresses first pass-through time slots between adjacent protection ports to a second pass-through time slot; when an action of pass-through is triggered, the protection switching module sending the second pass-through time slot to a time slot configuration module to parse, and the time slot configuration module sending a parsing result to a time slot register to perform a process of a time slot pass-through. The present invention provides an apparatus for fast passing through services in a SDH device, including a protection switching module, a time slot configuration module and a time slot register. With the method and apparatus in the present invention, the processing time for the pass-through configuration is reduced obviously, which benefits to fast completion of protection switching and achieves fast recovery of ring protection network services.

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Номер записи: 2
12-04-2012 дата публикации

Method to implement two fiber shared protection ring with extra traffic on stm-1/oc-3 interface

Номер: US20120087236A1
Автор: Hiren Desai, Karthik Muthuraja, Nikhil Satyarthi, Nishant Sharma
Принадлежит: Tejas Networks India Ltd

A method for protection of data traffic transmitted over 2-fiber shared protection ring on STM-1/OC-3 interface is provided. Also, the method involves carrying extra traffic in a ring topology for STM-1/OC-3 interface. This is achieved by fixing the granularity to one of ‘VC12/VC11/VC3/VC12-VC3/VC11-VC3’ for the STM-1 interface and to one of ‘VT2/VT1.5/STS-1’ for the OC-3 interface upfront when the protection is configured on the network element.

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Номер записи: 3
03-05-2012 дата публикации

Optical network in-band control plane signaling, virtualized channels, and tandem connection monitoring systems and methods

Номер: US20120106948A1
Автор: Alexander A. Smith, Iwan Kartawira, Jeffrey Scott Moynihan, Kumaresh Malli, PURUSHOTHAMAN Saravanan, Vagish Madrahalli
Принадлежит: Individual

The present disclosure provides improvements with respect to in-band control plane signaling, virtualized channels, and tandem connection monitoring in optical networks utilizing Synchronous Optical Network (SONET), Synchronous Digital Hierarchy (SDH), Optical Transport Network (OTN), and the like. In an exemplary embodiment, the present disclosure includes an optical network operating a control plane with in-band signaling utilizing SONET/SDH path level overhead. In another exemplary embodiment, the present disclosure includes an optical network operating virtualized SONET/SDH or OTN channels with manually cross-connections at intermediate line terminating elements. In yet another exemplary embodiment, the present disclosure includes a tandem connection monitoring selection method across multiple operator domains.

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Номер записи: 4
03-05-2012 дата публикации

Method and system for optical network smart timer management via delay measurement between spans

Номер: US20120106950A1
Автор: Jeffrey Scott Moynihan, Matt CONNOLLY, Richard Conklin, Vagish Madrahalli
Принадлежит: Ciena Corp

A method and system for determining timers in an High Level Data Link Control (HDLC) Traffic Manager (HTM) state machine are disclosed. According to one aspect, the invention provides for determining a transit delay between two nodes by sending a first packet having a delay measurement byte to a second node that is on a link between the first node and the second node. The method also includes receiving a second packet with the delay measurement byte from the second node. The delay measurement byte sent by the second node is adjusted by the second node to indicate its receipt by the second node. A measured delay value is determined. The measured delay value is the delay between a time of sending the first packet to the second node and receiving the second packet from the second node. The measured delay value is determined by the hardware of the first node. Upon determining the measured delay value, timer values of the HTM state machine are set based on the measured delay value.

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Номер записи: 5
07-06-2012 дата публикации

Communication device and communication method

Номер: US20120140776A1
Автор: Masaki Hirota
Принадлежит: Fujitsu Ltd

A communication device includes a memory to store data and a processor to receive data, to convert the received data and a same data of the received data among the stored data into a predetermined format, and to transmit data resulting from the data conversion.

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Номер записи: 6
28-06-2012 дата публикации

Method and device for indicating client signal fail

Номер: US20120163795A1
Автор: Bin Luo, Yuan Gu
Принадлежит: ZTE Corp

The present invention discloses a method for indicating client signal fail in an optical transport network, including: adding CSF indication bits to an Optical Channel Payload Unit k (OPUk) or/and OPUk-Xv multiframe to indicate whether a client signal is failed; detecting the CSF indication bits of a PSI in the received OPUk or/and OPUk-Xv multiframe, and when the number of continuously detected CSF indications exceeds a preset threshold, indicating to perform a link protection switch. The present invention also discloses an apparatus for implementing the above method. The present invention can avoid the case of APS fail due to the too long CSF time delay; the indication method is simple and the implementation is convenient; and a plurality of CSF indications are used in the multiframe, thus the indication is more flexible.

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Номер записи: 7
16-08-2012 дата публикации

Method and system for service clock transparent transmission in optical transport network

Номер: US20120207472A1
Автор: Xiaopeng Song, Yan Yuan
Принадлежит: ZTE Corp

A method and system for service clock transparent transmission in an optical transport network (OTN) are provided. The system includes a service accessing end and an OTN receiving end; the method includes the following steps: the OTN receiving end performs de-mapping operation to an OTN frame after receiving the OTN frame, and performs two-level buffering operation to the service data flow recovered therefrom, a first buffering unit performs a homogenization treatment to the service data flow and then outputs to a second buffering unit, which the second buffering unit outputs the service data flow according to the service clock after receiving the service data flow. After adopting the present invention, it is able to ensure that the quality of the recovered service clock is relatively higher, which meets the customer requirement on the related specification of the service clock.

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Номер записи: 8
30-08-2012 дата публикации

Method and Apparatus for Processing Tandem Connection Monitoring Level

Номер: US20120219284A1
Автор: Qingfei Nian
Принадлежит: ZTE Corp

The disclosure discloses a method for processing a Tandem Connection Monitoring (TCM) level, which comprises: obtaining a route of a service which needs to be configured TCM, obtaining a TCM segment on the route of the service, determining a TCM segment which needs to be configured from the obtained TCM segment, and allocating a TCM level for the TCM segment which needs to be configured according to a segment relationship between the TCM segment which needs to be configured and a configured TCM segment. The disclosure further discloses an apparatus for processing a TCM level. By means of the disclosure, a TCM level can be automatically allocated for a TCM segment and environment of multiple network applications can be applicable.

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Номер записи: 9
06-09-2012 дата публикации

Bandwidth adjusting method and communication node

Номер: US20120224857A1
Автор: Chiwu Ding, Huaping Qing, WEI SU, Xi Huang
Принадлежит: Huawei Technologies Co Ltd

A bandwidth adjusting method and a communication node are provided. The adjusting method includes: sending, by an upstream ingress unit, a group of multi-channel parallel basic switch cells in which adjustment signaling is carried to all downstream branch egress units; sending normal signaling when determining that adjustment response statuses returned by all the downstream branch egress units are reception acknowledgment; after receiving the normal signaling by the downstream branch egress unit, adding or removing the basic switch cell into or from a next group of multi-channel parallel basic switch cells according to the adjustment signaling; and adjusting a time slot of an HO ODU sent by the downstream branch egress unit to a downstream node, and instructing the downstream node to adjust the time slot of the HO ODU. Through the method and the communication node, lossless bandwidth adjustment in a point-to-multipoint OTN asymmetric bandwidth carrier system is implemented.

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Номер записи: 10
20-09-2012 дата публикации

Optical network system and wdm apparatus

Номер: US20120237199A1
Автор: Kazuo Kubo, Sota Yoshida, Yuji Akiyama
Принадлежит: Mitsubishi Electric Corp

An optical network system that performs transmission of N:1 protection includes a node that includes transmission-side operating muxponders that multiplex client signals for every M-channel signal bundle and convert multiplexed signals into optical signals having different wavelengths, transmission-side optical couplers that branch the client signals into two channels of operating and redundant, transmission-side optical switches each selecting one channel from redundant signals as a redundant client signal, and a transmission-side redundant muxponder that performs a predetermined transmission-side process according to an accommodation mode set on the redundant client signal and then multiplexes the redundant client signals, converts the multiplexed signal into an optical signal having a wavelength different from that of the operating signal, thereby making the accommodation mode settable for each channel in an independent manner.

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Номер записи: 11
08-11-2012 дата публикации

Method and apparatus for generating resize control overhead in optical transport network

Номер: US20120281983A1
Автор: Ji-Wook Youn, Jong-Ho Kim, Jong-Yoon Shin
Принадлежит: Electronics and Telecommunications Research Institute ETRI

There is provided a source node apparatus including: a Bandwidth Resize (BWR) generator configured to insert an InRP signal and an InTSCC signal into OPUflex Resize Control Overhead (RCOH) and to transmit the resultant OPUflex RCOH; and a BWR relay generator configured to insert an Resizing Protocol indicator (RP) signal and a Tributary Slot Connectivity Check (TSCC) signal into higher order OPUk RCOH with reference to the InRP signal and the InTSCC signal included in the OPUflex RCOH transmitted by the BWR generator, and transmit the resultant higher order OPUk RCOH.

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Номер записи: 12
27-12-2012 дата публикации

Method for remote device provisioning and insertion/extraction of overhead/eoam data for various protocols

Номер: US20120327958A1
Автор: Ilian Sevdalinov Tzvetanov, Nizar Rida
Принадлежит: Exar Corp

A device demultiplexes an optical signal to produce a number of client streams for client devices. The device produces overhead packets for the client devices. The overhead packets are sent using a packet interface on the device. The overhead packets are sent to the client devices with a Virtual Local Area Network Identification (VLAN ID) portion of the overhead packets identify a client device of the client devices.

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Номер записи: 13
03-01-2013 дата публикации

OSS Support for Control Plane Technology

Номер: US20130004170A1
Автор: Alka Srivastava, Beverly N. Meyers, Dean Rader, Maria Croat, Michael A. Reina, Praveen Katiyar, Rama Sreedhara, Shakil H. Siddique, Sriam Subramanian
Принадлежит: Telcordia Technologies Inc

The OSS provides unique and automated provisioning, activation, fallout management and monitoring of SONET and WDM networks comprising control plane mesh and traditional SONET/WDM Rings/Chains. Resource discovery and dynamic provisioning provides for increased use of network bandwidth. It is possible both all control plane networks and mixed control plane and traditional networks. Network connections or the network topology may be accomplished in a hop-by-hop manner.

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Номер записи: 14
14-03-2013 дата публикации

Time multiplexing for coexistence within multiple communication systems

Номер: US20130064155A1
Автор: Katayoun Sohrabi
Принадлежит: WiLAN Inc

Methods and apparatus permitting the coexistence of multiple communication links to distinct wireless systems in a client device are disclosed. A wireless device can interface with both a primary communications system and at least one distinct communications system by managing the coexistence of active communications with the multiple communication systems. The wireless device can initially configure communications with the primary communications system for dynamically reconfigurable time multiplexed operation having scheduled periods of inactivity. The wireless device can determine timing and scheduling of communications with the distinct communications systems and can schedule the communications with the distinct communications systems during periods of inactivity in the primary communications system. The periods of inactivity may be limited to the scheduled periods of inactivity or can include unscheduled periods of inactivity occurring during active periods of the time multiplexed operation. The device may also use data priorities of communications to override overlapping communication activity.

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Номер записи: 15
11-04-2013 дата публикации

Method and apparatus for implementing self-adaption of cross granularity in optical transport network

Номер: US20130089321A1
Автор: Haiping Hao, Hongbing Zou, Ruimin Ma
Принадлежит: ZTE Corp

The disclosure relates to a method and apparatus for implementing self-adaption of cross granularity in an Optical Transport Network (OTN). The method includes: acquiring an optical interface side OTN service signal which has been processed by a frame-forming chip, and performing determination on the frame header of an Optical channel Data Unit (ODU) frame of the current level in the OTN service signal; when frame-alignment is determined to be successful, performing level-by-level de-multiplexing processing on the ODU frame of the current level to obtain cross granularities of different levels, selecting output channels for the cross granularities of different levels, performing mapping processing on the output cross granularities of different levels to form fixed rate service signals, and outputting the fixed rate service signals to back board ports, where the signals are transmitted to a cross board. By the disclosure, the cross granularity of a single board at the line side can be self-adaptively configured without occupying any OTN overhead, thus implementing normal communication without manually modifying the cross granularity of the single board at the line side when customer services change.

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Номер записи: 16
16-05-2013 дата публикации

Apparatus and method for determining a location of failure in a transmission network

Номер: US20130121683A1
Автор: Kazuaki Nagamine
Принадлежит: Fujitsu Ltd

A plurality of transmission devices are communicably coupled to each other in a first transmission network. A first transmission device receives data from a second transmission device, and extracts, from the received data, attribute information including report-destination identification information identifying a third transmission device and routing information identifying a transmission route through which the data has been transmitted to the first transmission device via the second transmission device in the first transmission network. The first transmission device stores the extracted attribute information in a memory, and notifies, upon detecting a failure that has occurred in the first transmission network, the third transmission device of failure information that indicates an occurrence of the failure and includes the route information, based on the report-destination identification information included in the attribute information stored in the memory, through a second transmission network different from the first transmission network.

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Номер записи: 17
27-06-2013 дата публикации

Transmission apparatus

Номер: US20130163982A1
Автор: Yuji Tochio
Принадлежит: Fujitsu Ltd

A transmission apparatus interconnects a core network for making a communication by forming a connection and a metro network for m a communication by adding an address to data and by executing a forwarding process. The transmission apparatus includes a function of transmitting the data to the connection of the core network, to which an address of the metro network is made to correspond, and transfers the data to the connection of the core network, which is made to correspond to the address added to the data received from the metro network.

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Номер записи: 18
01-08-2013 дата публикации

Transmission apparatus and switching method

Номер: US20130195453A1
Автор: Shigeo Tani, Takashi Umegaki
Принадлежит: Fujitsu Ltd

A transmission apparatus includes: an assigning unit to assign a number to a group of concatenation information of leading and dependent data which are multicast or broadcast; a retrieval unit to retrieve the concatenation information of the leading data corresponding to the dependent data, the leading and dependent data having the same number; a regeneration unit to regenerate concatenation information of the dependent data in accordance with the concatenation information of the leading data; a storage unit to store switch information of the leading data, the switch information representing a switch which switches output destinations of the leading and dependent data; an information retrieval unit to refer to the storage unit in accordance with leading data information included in the concatenation information of the dependent data so as to retrieve switch information of the dependent data; and a switching unit to switch the output destination of the dependent data.

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Номер записи: 19
05-09-2013 дата публикации

Extending A Local Area Network

Номер: US20130230034A1
Автор: Cedric Fung Lam, Dov Shimon Zimring, Ke Dong, Milo Steven Medin, Steven Fong, Tony ONG, Yifan Gao, Yut Loy Chan
Принадлежит: Google LLC

A local area network system that includes a residential gateway in wired communication with a remote service provider and multiple set top boxes in wired communication with the residential gateway. Each set top box includes a network extender having a wired connection to a residential gateway of a local area network, a media player in communication with the network extender, and at least one wireless transceiver in communication with the network extender. The media player includes a computing processor executing instructions to format a signal received from the network extender for use by a media device. Each set top box is configured as an access point for a local area network of the residential gateway.

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Номер записи: 20
05-09-2013 дата публикации

Unidirectional asymmetric traffic pattern systems and methods in switch matrices

Номер: US20130230052A1
Автор: Bryan FREESTONE, Monali CHAKRABARTY, Satish Gopalakrishna
Принадлежит: Ciena Corp

A switch fabric system and network element based thereon include a N×M switch fabric with M Trail Termination Points (TTPs) each with N timeslots there through in a bidirectional manner, a first connection in the switch fabric, wherein the first connection includes a unidirectional asymmetric connection of X timeslots, wherein X<N, and a second connection in the switch fabric in an opposite direction as the first connection, wherein the second connection includes a unidirectional asymmetric connection of Y timeslots, wherein Y<N, and wherein at least one of the Y timeslots overlaps with one of the X timeslots on a same TTP of the M TTPs, wherein N, M, X, and Y each include an integer. A method includes establishing unidirectional asymmetric connections with overlapping portions therein as well as merging, splitting, and converting connections in-service and minimizing blocking probabilities.

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Номер записи: 21
19-09-2013 дата публикации

Communication system and method therefor

Номер: US20130243428A1
Автор: Hiroyuki Kitajima, Ryoichi Mutoh
Принадлежит: Fujitsu Ltd

A frame transmitting apparatus includes a transmitting unit which transmits, when a change is made to a value in a predetermined field of a frame, the frame including the predetermined field with the changed value a predetermined number of times in succession. A frame receiving apparatus includes a receiving unit which receives the frame and an acceptance processing unit which recognizes the value in the predetermined field of the received frame and conducts acceptance processing. The acceptance processing unit compares, when the value is different from a currently accepted value, the value with an expected value; accepts the value when the value matches the expected value; and accepts, when the value does not match the expected value, the value after receiving the same value the predetermined number of times in succession.

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Номер записи: 22
03-10-2013 дата публикации

Optical transmission apparatus

Номер: US20130259473A1
Автор: Yasuki Fujii
Принадлежит: Fujitsu Ltd

In an optical transmission apparatus, a path information table stores paths set in a network and wavelength channel information on the paths. A controller searches for an apparatus which performs route switching of paths using a plurality of grouped wavelength channels, based on fault information on the network detected by the optical transmission apparatus, fault information on the network detected by other optical transmission apparatus, and the paths and wavelength channel information on the paths stored in the path information table. When determining that the number of operating paths is maximized by performing the route switching of the paths in the optical transmission apparatus, the controller performs the route switching of the paths.

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Номер записи: 23
16-01-2014 дата публикации

Resizing a path in a connection-oriented network

Номер: US20140016925A1
Автор: Daniele Ceccarelli, Diego Caviglia, Sergio Lanzone
Принадлежит: Telefonaktiebolaget LM Ericsson AB

An existing path in a connection-oriented network requires resizing from a first size to a second size. Nodes exchange control plane signalling with other nodes which advertises available resources on links between nodes. A node on the existing path receives a request to establish a path capable of being resized to the second size. The node determines, using information acquired by the control plane signalling with other nodes, a new path between nodes capable of supporting the second size. The node signals to establish the new path and switches traffic from the existing path to the new path. The node causes the new path to be resized to the second size. Nodes exchange control plane signalling with other nodes which advertises whether a link supports resizing, such as OSPF-TE advertisements.

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Номер записи: 24
23-01-2014 дата публикации

Burst transmission method, and receiver resetting method and apparatus in a passive optical network

Номер: US20140023367A1
Автор: Dongning Feng, Dongyu Geng, Frank Effenberger, Jing Li
Принадлежит: Huawei Technologies Co Ltd

A burst transmission method and a receiver resetting method and apparatus in a Passive Optical Network (PON) are provided. A burst receiver resetting method in a PON includes: receiving a preamble sequence and synchronizing data; after synchronizing the data, continuing to receive the data, and matching a Burst Terminator (BT); and resetting a receiver after successfully matching the BT. Meanwhile, an apparatus for implementing the method and a corresponding burst data transmission method are provided. By using the burst receiver resetting method and apparatus in the PON and the corresponding burst transmission method at an Optical Network Unit (ONU) burst transmission end, a Reach Extender (RE) does not need to unpack upstream burst bandwidth allocation information carried in downstream data.

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Номер записи: 25
06-02-2014 дата публикации

Data Transport in a Virtualized Distributed Antenna System

Номер: US20140037292A1
Автор: Sasa Trajkovic, Shawn Patrick Stapleton
Принадлежит: Dali Systems Co Ltd

A system for routing signals in a Distributed Antenna System includes a plurality of local Digital Access Units (DAUs) located at a Local location. Each of the plurality of local DAUs is coupled to each other and operable to route signals between the plurality of local DAUs. Each of the plurality of local DAUs includes one or more Base Transceiver Station (BTS) RF connections. Each of the plurality of BTS RF connections is operable to be coupled to one of one or more sectors of a BTS. The system also includes a plurality of remote DAUs located at a Remote location. The plurality of remote DAUs are coupled to each other and operable to transport signals between the plurality of remote DAUs.

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Номер записи: 26
27-02-2014 дата публикации

Spectrum Management and Timing Optimization Over Multiple Distribution Points

Номер: US20140056312A1
Автор: Rainer Strobel
Принадлежит: LANTIQ DEUTSCHLAND GMBH

Presented are systems and methods for spectrum management and timing optimization of communication networks have multiple distribution points, multiple remote transceivers, and a shared communication binder. In some embodiments, distribution points and communication lines are added to an active network by the allocation of unused time slots. In some embodiments, transmission collisions, near-end cross-talk, and far-end cross-talk, are predicted upon the addition of added distribution points and communication lines, and techniques are applied to reduce or cancel such phenomena.

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Номер записи: 27
06-01-2022 дата публикации

Service data processing method and apparatus

Номер: US20220006550A1
Автор: WEI SU
Принадлежит: Huawei Technologies Co Ltd

This application discloses a service data processing method and apparatus, to resolve a problem of low bandwidth utilization in the conventional technology. A dynamic framing method is used. When a transmission rate of an OTN data frame increases, a length of a payload area constantly increases, while a length of an overhead area does not increase. In other words, in OTN data frames at different transmission rates, lengths of overhead areas are fixed. As the transmission rates of the OTN data frames increase, lengths of payload areas constantly increase. In this way, when the rate increases, overheads do not occupy more bandwidths, thereby improving bandwidth utilization.

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Номер записи: 28
03-01-2019 дата публикации

APPARATUS, SYSTEMS, AND METHODS FOR OPTICAL CHANNEL MANAGEMENT

Номер: US20190007155A1
Автор: Grammel Gert, Kachrani Ajay, MCEACHERN Patrick Michael
Принадлежит: JUNIPER NETWORKS, INC.

An apparatus includes a reconfigurable optical add/drop multiplexer (ROADM) having an input port to receive a first optical signal from a second device. The ROADM also includes a first wavelength selective switch (WSS), in optical communication with the input port, to convert the first optical signal into a second optical signal, a loopback, in optical communication with the first WSS, to transmit the second optical signal, and a second WSS, in optical communication with the loopback, to convert the second optical signal to a third optical signal and direct the third optical signal back to the second device via the input port. 1. An apparatus , comprising: an input port to receive a first optical signal from a second device;', 'a first wavelength selective switch (WSS), in optical communication with the input port, to convert the first optical signal into a second optical signal;', 'a loopback, in optical communication with the first WSS, to transmit the second optical signal; and', 'a second WSS, in optical communication with the loopback, to convert the second optical signal to a third optical signal and direct the third optical signal back to the second device via the input port., 'a reconfigurable optical add/drop multiplexer (ROADM) having2. The apparatus of claim 1 , wherein the second device comprises a router.3. The apparatus of claim 1 , wherein the loopback comprises an optical amplifier to amplify the second optical signal.4. The apparatus of claim 1 , wherein the ROADM further comprises:a spectral analyzer, operatively coupled to the input port, to acquire spectral information of the first optical signal.5. The apparatus of claim 1 , wherein the ROADM further comprises:a first spectral analyzer, operatively coupled to the input port, to acquire first spectral information of the first optical signal;at least one user port, operatively coupled to the first WSS, to receive at least a portion of the second optical signal;a second spectral analyzer, ...

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Номер записи: 29
27-01-2022 дата публикации

METHOD FOR ALLOCATING A POINT-TO-POINT CHANNEL TO A USER MODULE OF AN OPTICAL COMMUNICATION NETWORK, CORRESPONDING COMPUTER PROGRAM PRODUCT, STORAGE MEDIUM AND DEVICE

Номер: US20220029727A1
Автор: Bourgart Fabrice
Принадлежит:

A method for allocating a point-to-point channel to a user module of an optical communication network. The network includes user modules and optical terminations, and supports point-to-multipoint channels and a plurality of point-to-point channels, one same point-to-point channel being assigned to one single optical termination. The method is implemented for a user module called a requester user module, and includes: detecting a predetermined availability signal conveyed by a point-to-point channel of the plurality of point-to-point channels; and allocating the point-to-point channel over which the predetermined availability signal is conveyed, called available point-to-point channel, to the requester user module. 1. A method for allocating a point-to-point channel to a user module of an optical communication network , said network comprising user modules and optical terminations , and supporting point-to-multipoint channels and a plurality of point-to-point channels , one same point-to-point channel being assigned to one single optical termination , said method being implemented by at least one device for a user module called requester user module , and comprising:detecting a predetermined availability signal conveyed by a point-to-point channel of said plurality of point-to-point channels;allocating the point-to-point channel over which said predetermined availability signal is conveyed, called available point-to-point channel, to said requester user module.2. The method according to claim 1 , wherein the detecting comprises verifying whether the predetermined availability signal is detected on a first point-to-point channel amongst said plurality of point-to-point channels claim 1 , and:in the case of a positive verification, allocating the first point-to-point channel to said requester user module;in the case of a negative verification, verifying whether the predetermined availability signal is detected on a second point-to-point channel amongst said plurality ...

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Номер записи: 30
11-01-2018 дата публикации

DATA PROCESSING DEVICE AND DATA PROCESSING METHOD

Номер: US20180013505A1
Автор: ATSUMI Ken
Принадлежит: FUJITSU LIMITED

A data processing device includes: a FIFO buffer; a write circuit writing data in the buffer according to a write clock signal; a read circuit reading data from the buffer according to a read clock signal, a PLL circuit conducting a phase synchronization processing of the read clock signal based on a phase difference between the write and read clock signals and outputting a notification signal when the phase difference becomes within a predetermined range; a write control circuit controlling a timing when the write circuit starts writing based on the notification signal; a read control circuit comparing an address in which data is written and a reference address and controlling a timing when the read circuit starts reading based on a comparison result; and a correction circuit correcting the reference address with a value corresponding to the phase difference obtained when the notification signal has been output. 1. A data processing device comprising:a buffer from which data is read in an order that the data is written;a write circuit configured to write data in the buffer according to a write clock signal;a read circuit configured to read data from the buffer according to a read clock signal,a PLL circuit configured to conduct a phase synchronization processing of the read clock signal based on a phase difference between the write clock signal and the read clock signal, and to output a notification signal when the phase difference becomes within a predetermined range;a write control circuit configured to control a timing at which the write circuit starts writing based on the notification signal;a read control circuit configured to compare an address in which data is written by the write circuit and a reference address, and to control a timing at which the read circuit starts reading based on a comparison result; anda correction circuit configured to correct the reference address with a correction value corresponding to the phase difference that is obtained when ...

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Номер записи: 31
09-01-2020 дата публикации

Service processing method and apparatus

Номер: US20200014480A1
Автор: Junling Xiang, Limin Dong
Принадлежит: Huawei Technologies Co Ltd

Embodiments provide a service processing method and apparatus. According to the service processing method, a number of code blocks of a client service may be mapped to a FlexE subslot, and a FlexE subslot overhead is generated, so that the client service mapped to the FlexE subslot and the FlexE subslot overhead are sent through a physical channel, and a low-rate service is carried. Compared with carrying a low-rate service by directly using an entire FlexE slot, carrying the client service by using a number of FlexE subslots into which the FlexE slot is divided can improve bandwidth utilization.

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Номер записи: 32
03-02-2022 дата публикации

Data in motion storage and method

Номер: US20220038797A1
Автор: Aan Eli Willner, Ariel LITVIN, Asher MCGUFFIN, Daniel M. DAMAGHI, Naftaly BARAK, Ohad Harlev, Paul Francis MCMANAMON
Принадлежит: Lyteloop Technologies LLC

A data storage system is disclosed that includes a recirculating loop storing data in motion. The data may be carried by a signal via the loop including one or more satellites or other vessels that return, for example by reflection or regeneration, the signals through the loop. The loop may also include a waveguide, for example an optical fiber, or an optical cavity. Signal multiplexing may be used to increase the contained data. The signal may be amplified at each roundtrip and sometimes a portion of the signal may be regenerated.

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Номер записи: 33
25-01-2018 дата публикации

METHOD, DEVICE, SYSTEM, AND STORAGE MEDIUM FOR IMPLEMENTING TIME SYNCHRONIZATION IN OPTICAL TRANSPORT NETWORK

Номер: US20180026735A1
Автор: Chen Zongzheng
Принадлежит:

A master device generates a time synchronization message, performs a first correction on a correction domain of the time synchronization message, and sends it including a first timestamp T to a slave device. The slave device performs a second correction on the correction domain of the time synchronization message, adds a second timestamp T, generates a delay request message, performs a third correction on the correction domain of the delay request message, and sends to the master device the delay request message including a third timestamp T. The master device performs a fourth correction on the correction domain of the delay request message, adds a fourth timestamp T, sends to the slave device a delay response message including the correction domain of the delay request message subjected to the fourth correction and the fourth timestamp T. The slave device performs time synchronization with the master device accordingly. 1. A method for implementing time synchronization in an Optical Transport Network (OTN) , comprising:{'b': '1', 'generating, by a master device, a time synchronization message, performing a first correction on a correction domain of the time synchronization message, and sending to a slave device the time synchronization message including a first timestamp T; and'}{'b': 3', '4', '4, 'receiving, by the master device, a delay request message which has been subjected to a third correction and includes a third timestamp T, performing a fourth correction on a correction domain of the delay request message, adding a fourth timestamp T to the delay request message, and sending to the slave device a delay response message including the fourth timestamp T and the correction domain of the delay request message which has been subjected to the fourth correction.'}21. The method according to claim 1 , wherein generating claim 1 , by the master device claim 1 , the time synchronization message claim 1 , performing the first correction on the correction domain of ...

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Номер записи: 34
10-02-2022 дата публикации

SYSTEMS AND METHODS FOR ENHANCED AUTONEGOTIATION

Номер: US20220045957A1
Автор: Drake Steven E., Lyman Charles R.
Принадлежит: LEVEL 3 COMMUNICATIONS, LLC

An improved autonegotiation approach includes determining that a negotiated rate between a first network device and a second network device exceeds data transfer capacity over a network path downstream of the second network device. In response, a configuration message is generated and transmitted to the first network device. When received by the first network device, the configuration message causes the first network device to limit data transfer between the first network device and the second network device to no more than the downstream data transfer capacity. 1. A method of establishing a data transfer rate between network endpoints , the method comprising:initiating a connection between a first endpoint of a first network and a second endpoint of a second network, wherein the connection between the endpoint of the first network and the endpoint of the second network can transfer data at up to a first transfer rate;determining the first transfer rate is greater than a second transfer rate for transferring data over the second network, wherein the step of determining the first rate is greater than the second transfer rate occurs in response to identifying a decrease in throughput along a communication path between the second endpoint and a third endpoint of the second network;transmitting, in response to determining the first transfer rate is greater than the second transfer rate, a configuration message to a network device corresponding to the first endpoint, wherein the configuration message causes the network device to limit transfer of data over the connection from the first endpoint to the second endpoint to no greater than the second transfer rate, wherein the second network includes two or more third endpoints connected to a respective sub-interface of the second endpoint and enabling a respective transfer rate therebetween, and the second transfer rate is the respective transfer rate or a sum of the respective transfer rates between the second endpoint and ...

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Номер записи: 35
04-02-2016 дата публикации

Localized network repair systems and methods

Номер: US20160036520A1
Автор: Anurag Prakash, Dominic Richens, Gerard Leo SWINKELS, Mohit Chhillar, Rajagopalan Kannan
Принадлежит: Ciena Corp

A localized repair method in a network using a control plane includes, responsive to a failure on a local repair segment defined on a connection traversing the network, generating a release message in the control plane; attempting a local repair on the local repair segment; if the local repair is unsuccessful, transmitting the release message to redial the connection; and, if the local repair is successful, signaling a new sub-path based on the local repair. A controller and a network are also disclosed.

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Номер записи: 36
01-02-2018 дата публикации

Burst-Mode Discrete Multi-Tone for Networks

Номер: US20180034579A1
Автор: Huaiyu Zeng, XIANG Liu
Принадлежит: FutureWei Technologies Inc

A method implemented by a first network element (NE) comprises receiving, by a receiver of the first NE, a burst from a second NE, wherein the burst comprises at least one training symbol (TS), storing, by a memory of the first NE, a channel response for a link between the first NE and the second NE, wherein the first NE is communicatively coupled to the second NE, wherein the channel response is based on a current channel response estimated using at least one TS in the burst and a previously stored channel response, and wherein the previously stored channel response is based on a plurality of bursts previously received from the second NE, and compensating, by a processor coupled to the receiver and the memory of the first NE, modulated symbols in the burst using the channel response.

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Номер записи: 37
01-02-2018 дата публикации

Coding Scheme and Multiframe Transmission in Optical Networks

Номер: US20180034590A1
Автор: Davide Codella, Gilberto Loprieno
Принадлежит: Cisco Technology Inc

An optical frame is received over an optical link within an optical network. The optical frame contains a payload of aggregated data, an alignment value, and a bit interleaved parity value. The content of the optical frame is aligned based on the alignment value. The bit interleaved parity value is monitored. In response to the monitoring, a transmission quality of the transmission link is determined.

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Номер записи: 38
01-02-2018 дата публикации

Passive optical network receiving and transmitting frame using multiple lanes

Номер: US20180035183A1
Автор: Hwan Seok CHUNG, Kwang Ok Kim, Kyeong Hwan Doo
Принадлежит: Electronics and Telecommunications Research Institute ETRI

A method of registering an optical network unit (ONU) in an optical line terminal (OLT). The OLT determines a lane to be used by the ONU based on a transmission rate supported by the ONU, combines or distributes data of a dataflow based on a rate of the lane by comparing the rate of the lane to a rate of the dataflow of a media access control (MAC) client interface, and, when the OLT and the ONU are connected through multiple lanes, transmits and receives data between the OLT and the ONU through channel bonding for more effective use of a network.

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Номер записи: 39
31-01-2019 дата публикации

OTN adaptation for support of subrate granularity and flexibility and for distribution across multiple modem engines

Номер: US20190036632A1
Автор: Andrew Mccarthy, Ronald Gagnon, Sebastien GAREAU
Принадлежит: Ciena Corp

Systems and methods for Optical Transport Network (OTN) transmission include receiving an OTN client signal for transmission via a plurality of line side modems; segmenting the OTN client signal into a plurality of flows; providing the plurality of flows to the plurality of line side modems, wherein the OTN client signal is a single client which is transmitted optically via the plurality of line side modems which are each different line interfaces. The OTN client can be an Optical channel Transport Unit (C=100)×n (n=1, 2, 3, . . . ) OTUCn.

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Номер записи: 40
30-01-2020 дата публикации

Service synchronization in Retain Home Path scenarios in a control plane network

Номер: US20200036439A1
Автор: Anurag Prakash, Mohit Chhillar, Rishi Malik, Seemant BISHT
Принадлежит: Ciena Corp

A service modification method includes, in a node which is part of a network controlled by a control plane, routing a connection off of its home path to a current path which is at least partially disjoint from the home path and creating a reservation for the connection on the home path such that the connection can revert thereto; signaling a modification of the connection while it is on the current path; and updating the reservation based on the modification including signaling the modification to all nodes on the home path. The service modification method can further include reverting the connection to the home path with the modification. The updating can fail due to an inability to support the modification on the home path, and the service modification method can further include periodically retrying the updating the reservation based on the modification.

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Номер записи: 41
08-02-2018 дата публикации

HIGH-SPEED PLUGGABLE OPTICAL TRANSCEIVERS WITH ADVANCED FUNCTIONALITY

Номер: US20180041280A1
Автор: Cardona Gabriel E., ELAHMADI Salam, ELAHMADI Siraj Nour, Hotchkiss Adam R.
Принадлежит:

An optical transceiver configured to operate in a host device includes an electrical interface communicatively coupled to the host device to interface electrically with the host device, wherein the optical transceiver is compliant with a Multi-Source Agreement (MSA) which is supported by the host device; optical transceiver components communicatively coupled to the electrical interface, wherein the optical transceiver components are configured to optically interface signals with a second optical transceiver to form an optical link; and electronic dispersion compensation circuitry communicatively coupled to the optical transceiver components and configured to electronically compensate for optical fiber chromatic and/or polarization mode dispersion associated with the optical link, separate and independent from the host device. 1. An optical transceiver configured to operate in a host device , the optical transceiver comprising:an electrical interface communicatively coupled to the host device to interface electrically with the host device, wherein the optical transceiver is compliant with a Multi-Source Agreement (MSA) which is supported by the host device;optical transceiver components communicatively coupled to the electrical interface, wherein the optical transceiver components are configured to optically interface signals with a second optical transceiver to form an optical link; andelectronic dispersion compensation circuitry communicatively coupled to the optical transceiver components and configured to electronically compensate for optical fiber chromatic and/or polarization mode dispersion associated with the optical link, separate and independent from the host device.2. The optical transceiver of claim 1 , wherein the electronic dispersion compensation circuitry operates independent of the MSA and is transparent to the host device.3. The optical transceiver of claim 1 , further comprising:forward error correction circuitry communicatively coupled to the ...

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Номер записи: 42
08-02-2018 дата публикации

DATA CENTER CONNECTIVITY SYSTEMS AND METHODS THROUGH PACKET-OPTICAL SWITCHES

Номер: US20180041392A1
Автор: Blair Loudon T.
Принадлежит:

A data center network includes a plurality of packet-optical switches each at a location in the data center network and each including a switch fabric comprising both a Layer 1 fabric and a packet fabric communicatively coupled to one or more line ports; wherein the plurality of packet-optical switches are communicatively coupled to one another in a topology to form data connectivity in the data center network, and wherein each of the plurality of packet-optical switches is configured to provide the data connectivity through the Layer 1 switch bypassing the packet fabric when the location does not require Layer 2 forwarding in the topology, and provide the data connectivity through the Layer 1 switch and using the packet fabric to provide the data service with multi-point connectivity when the location requires Layer 2 forwarding in the topology. 1. A data center network , comprising:a plurality of packet-optical switches each at a location in the data center network and each comprising a switch fabric comprising both a Layer 1 fabric and a packet fabric communicatively coupled to one or more line ports;wherein the plurality of packet-optical switches are communicatively coupled to one another in a topology to form data connectivity in the data center network, and provide the data connectivity through the Layer 1 switch bypassing the packet fabric when the location does not require Layer 2 forwarding in the topology, and', 'provide the data connectivity through the Layer 1 switch and using the packet fabric to provide the data service with multi-point connectivity when the location requires Layer 2 forwarding in the topology., 'wherein each of the plurality of packet-optical switches is configured to'}2. The data center network of claim 1 , further comprising:a plurality of servers at the locations interconnected to one another via the data connectivity, wherein the data center network comprises a distributed data center.3. The data center network of claim 3 , ...

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Номер записи: 43
24-02-2022 дата публикации

OPTICAL NETWORK SYSTEM, OPTICAL NODE DEVICE, AND OPTICAL NETWORK CONTROL METHOD

Номер: US20220060257A1
Автор: FUJISAWA Shinsuke, Hino Tomoyuki, Tajima Akio, TAKESHITA Hitoshi
Принадлежит: NEC Corporation

If wavelength defragmentation is performed during the operation of an optical network, an instantaneous interruption of a network arises; consequently, data are lost; therefore, an optical network control method according to an exemplary aspect of the present invention includes monitoring a data volume of a client signal to be transmitted using a plurality of optical subcarriers; and performing synchronously, depending on a variation in the data volume, an optical subcarrier changing process of changing an active optical subcarrier, of the plurality of optical subcarriers, to be used for transmitting the client signal, and a remapping process of remapping the client signal onto an active optical subcarrier after having been changed. 1. An optical network control method , comprising:depending on a variation in a data volume of a client signal to be transmitted using a plurality of optical subcarriers,changing an active optical subcarrier, of the plurality of optical subcarriers, to be used for transmitting the client signal, synchronously between a transmitting side and a receiving side, andremapping the client signal onto an active optical subcarrier after having been changed, synchronously between the transmitting side and the receiving side.2. The optical network control method according to claim 1 ,wherein the changing of the active optical subcarrier is performed based on respective results of a process of selecting a change candidate optical subcarrier whose operation to be stopped from among the active optical subcarrier, and a process of setting a wavelength of a changed optical subcarrier that becomes the active optical subcarrier due to a change.3. The optical network control method according to claim 2 ,wherein the remapping of the client signal includes a process of remapping the client signal onto the optical subcarrier other than the change candidate optical subcarrier out of the plurality of optical subcarriers.4. The optical network control method ...

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Номер записи: 44
07-02-2019 дата публикации

FAULT DETECTION METHOD AND DEVICE

Номер: US20190045282A1
Автор: Li Peng, Liu Fuxue, Wang Wei, YIN Jian
Принадлежит:

A fault detection method and device is disclosed. The method includes obtaining, by an optical transport network (OTN) device, a first OTN frame. The first OTN frame includes a plurality of payload areas. Each payload area includes payload check information and payload data. The method further includes performing fault detection, according to the payload check information, of payload data of a payload area in which the payload check information is located. The first OTN frame is divided into a plurality of payload areas, and corresponding payload check information is carried in each payload area. 1. A fault detection method , comprising:obtaining, by an optical transport network (OTN) device, a first OTN frame, wherein the first OTN frame comprises a plurality of payload areas and each payload area carries payload check information and payload data; andperforming, by the OTN device, fault detection, according to the payload check information, on transmission of payload data, per payload area of the plurality of payload areas in the first OTN frame, wherein payload data, which is of a payload area in which a payload check information is located, is to be checked according to the payload check information in the payload area.2. The method according to claim 1 , wherein the first OTN frame comprises 4*n payload areas claim 1 , wherein n is a positive integer greater than or equal to 1.3. The method according to claim 1 , wherein performing fault detection comprises:obtaining a payload area in the first OTN frame, and obtaining payload check information in the payload area, wherein the payload area corresponds to respective payload check information; andchecking payload data in the corresponding payload area according to the respective payload check information.4. The method according to claim 3 , further comprising:obtaining an unchecked payload area in the first OTN frame, when the unchecked payload area still exists in the first OTN frame while the OTN device is ...

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Номер записи: 45
15-02-2018 дата публикации

METHOD AND APPARATUS FOR INSTALLING CAS INFORMATION

Номер: US20180048919A1
Автор: EOM Myungjin, LEE Heejeong, Lee HyeJin
Принадлежит:

Various exemplary embodiments of the present disclosure relate to method and an apparatus a broadcast receiver for a conditional access system (CAS) information download. The CAS information download method includes acquiring broadcast provider information. The method also includes, selecting a broadcast provider based on the broadcast provider information. The method further includes, transmitting a subscription request including identity information of the broadcast reception device to a broadcast provider server of the selected broadcast provider. The method also includes, downloading CAS information from a CAS server. 1. A method for downloading conditional access system (CAS) information by a broadcast reception device , the method comprising:acquiring broadcast provider information;selecting a broadcast provider based on the broadcast provider information;transmitting a subscription request including identity information of the broadcast reception device to a broadcast provider server of the selected broadcast provider; anddownloading CAS information from a CAS server.2. The method of claim 1 , wherein the identity information of the broadcast reception device comprises identity information of a security domain where the CAS information is downloaded and installed.3. The method of claim 1 , further comprising transmitting a CAS information download request including the identity information of the broadcast reception device to the CAS server.4. The method of claim 1 , wherein the broadcast provider information comprises a list of broadcast providers sorted based on location information of the broadcast reception device.5. The method of claim 1 , further comprising connecting to at least one terminal claim 1 , that performs at least one of acquiring the broadcast provider information claim 1 , selecting the broadcast provider based on the broadcast provider information claim 1 , or transmitting the subscription request including identity information of the ...

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Номер записи: 46
03-03-2022 дата публикации

Data Processing Method And Related Apparatus

Номер: US20220069944A1
Автор: Sisi OU, Zhangwei Lei, Zhiyu ZHU
Принадлежит: Huawei Technologies Co Ltd

The present disclosure relates to data processing methods and apparatus. One example method includes obtaining a first data block from first optical path data, adding padding data and the first data block into a target information bit in a first data frame to form target data, encoding the target data to obtain a first code block, and sending the first code block.

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Номер записи: 47
13-02-2020 дата публикации

Coordinated and scheduled standards-based intervals in network elements

Номер: US20200053439A1
Автор: Civil Geraldine Ruth, Estabrooks Kevin, Norman Jeffrey, Vanderydt Gregory
Принадлежит:

Systems and methods include, for a plurality of services operating on a plurality of network elements in a network, determining attributes for one or more events that periodically occur; and providing a configuration based on the determined attributes to the plurality of network elements for configuring the associated network elements, wherein the configuration controls and coordinates when actions associated with the one or more events occur, across the plurality of network elements and across one or more protocol layers. 1. A non-transitory computer-readable storage medium having computer readable code stored thereon for programming a device to perform steps of:for a plurality of services operating on a plurality of network elements in a network, determining attributes for one or more events that periodically occur; andproviding a configuration based on the determined attributes to the plurality of network elements for configuring the associated network elements, wherein the configuration controls and coordinates when actions associated with one or more events occur, across the plurality of network elements and across one or more protocol layers.2. The non-transitory computer-readable storage medium of claim 1 , wherein the actions include re-optimization claim 1 , resizing claim 1 , and reversion.3. The non-transitory computer-readable storage medium of claim 1 , wherein the configuration includes conditions used to control the actions for each of the one or more events.4. The non-transitory computer-readable storage medium of claim 3 , wherein the actions are constrained based on associated conditions.5. The non-transitory computer-readable storage medium of claim 1 , wherein the configuration staggers the actions throughout the network.6. The non-transitory computer-readable storage medium of claim 1 , wherein the configuration isolates the actions throughout the network to specific time periods.7. The non-transitory computer-readable storage medium of claim 1 ...

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Номер записи: 48
20-02-2020 дата публикации

Method and system to synchronize remote defect signaling and wavelength selective switch controls

Номер: US20200059712A1
Автор: Padala Dileep, Prakasam Dinesh Kumar, RAMACHANDRAN Sanjeev, Ramanathan Baranidhar, Rao Rajan, Satbhaiya Amit, Satyarthi Nikhil Kumar
Принадлежит:

A system and method is disclosed in which circuitry of a first controller of a first node on a first path within a transport network receives a first signal indicating a failure within the first path from a second controller. The first node is an end node of the first path. A first client signal failure clear signal is received from a second node upstream of the first node on the first path. The first client signal failure clear signal indicates that a non-restorable fault has been resolved such that the first path can be considered for carrying data traffic. The non-restorable fault is a failure at the source. Subsequent to receiving the first signal indicating the failure within the first path, a backward defect indication clear signal is transmitted to the second node, the backward defect indication clear signal indicating an absence of a failure in the first path. 1. A method comprising the steps of:receiving, by circuitry of a first controller of a first node on a first path within a transport network, a first signal indicating a failure within the first path from a second controller, the first node being an end node of the first path;receiving a first client signal failure clear signal from a second node upstream of the first node on the first path, the first client signal failure clear signal indicating that a non-restorable fault has been resolved such that the first path can be considered for carrying data traffic, the non-restorable fault being a failure at the source; andsubsequent to receiving the first signal indicating the failure within the first path, transmitting a backward defect indication clear signal to the second node, the backward defect indication clear signal indicating an absence of a failure in the first path.2. The method of claim 1 , wherein responsive to receiving the first client signal failure clear signal from the second node claim 1 , the first controller initiates a timer having a predetermined time period.3. The method of claim 2 ...

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Номер записи: 49
12-03-2015 дата публикации

DATA PROCESSING METHOD, RELATED DEVICE, AND SYSTEM FOR OPTICAL TRANSPORT NETWORK

Номер: US20150071637A1
Автор: Deng Ning, Shi Xiaozhong, VISSERS Maarten P.J.
Принадлежит: Huawei Technologies Co., Ltd.

Embodiments of the present invention provide a data processing method, related device, and system for an optical transport network. The data processing method for the optical transport network includes: encapsulating service data into an optical payload unit; mapping the optical payload unit to an optical channel data unit; mapping the optical channel data unit to a payload area of an optical burst transport unit; performing electrical-optical conversion on the optical burst transport unit to form an optical burst transport unit; carrying the optical burst transport unit onto an optical timeslot of an optical burst channel; and transmitting the optical burst channel to a line. Technical solutions provided by the present invention can effectively simplify a data processing process and reduce a data processing delay. 1. A service data processing method for an optical transport network , comprising:encapsulating service data into an optical payload unit;mapping the optical payload unit to an optical channel data unit;mapping the optical channel data unit to a payload area of an optical burst transport unit;performing electrical-optical conversion on the optical burst transport unit to form an optical burst transport unit;carrying the optical burst transport unit onto an optical timeslot of an optical burst channel; andtransmitting the optical burst channel to a line.2. The method according to claim 1 , whereinthe mapping the optical channel data unit to a payload area of an optical burst transport unit is specifically:mapping the optical channel data unit, whose signal time length is less than or equal to a frame period of the optical burst transport unit, to the payload area of the optical burst transport unit.3. The data processing method according to claim 1 , whereinthe number of electrical timeslots occupied by the optical burst transport unit is the same as the number of optical timeslots occupied by the optical burst channel, wherein the electrical timeslot and ...

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Номер записи: 50
09-03-2017 дата публикации

DYNAMIC HITLESS RESIZING IN OPTICAL TRANSPORT NETWORKS

Номер: US20170070307A1
Автор: Su Wei, VAN HELVOORT Hubertus Adrianus Maria, VISSERS Maarten P.J., Yang Yang
Принадлежит:

The invention relates to techniques for controlling a dynamic hitless resizing in data transport networks. According to a method aspect of the invention, a network connection comprises M tributary slots defined in a payload area of a higher order transport scheme of the data transport network and the method comprises the steps of receiving a connection resize control signal at each of the nodes along the path of the network connection; adding at each node along the path in response to the connection resize control signal a second set of N tributary slots to the first set of the M tributary slots, such that the network connection comprises M+N tributary slots; and increasing, after M+N tributary slots are available for the network connection at each node along the path, a transport data rate of the network connection. 1receiving, by an ingress end node, a connection resize control signal CTRL ADD;adding a set of N tributary slots to a set of M tributary slots; andincreasing, a bandwidth of the signal passing through the network connection, after M+N tributary slots are available for the ODUflex network connection at each node along a path in a manner synchronized with a downstream node by passing a tributary slot connectivity check (TSCC) signal;wherein the path of the ODUflex network connection extends between two connection end nodes, or extends over one or more intermediate nodes of the data transport network;wherein the ODUflex network connection transports data of client services in transport frames from the ingress end node to an egress end node; andwherein the ODUflex network connection comprises the set of the M tributary slots defined in a payload area of a higher order transport scheme of the data transport network.. A method for controlling dynamic hitless resizing of an Optical Data Unit flex (ODUflex) network connection in a data transport network, when the ODUflex network connection is to be incremented, the method comprising: This application is a ...

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Номер записи: 51
27-02-2020 дата публикации

METHOD AND APPARATUS FOR INSTALLING CONDITIONAL ACCESS SYSTEM INFORMATION

Номер: US20200068233A1
Автор: EOM Myungjin, LEE Heejeong, Lee HyeJin
Принадлежит:

Various exemplary embodiments of the present disclosure relate to method and an apparatus a broadcast receiver for a conditional access system (CAS) information download. The CAS information download method includes acquiring broadcast provider information. The method also includes, selecting a broadcast provider based on the broadcast provider information. The method further includes, transmitting a subscription request including identity information of the broadcast reception device to a broadcast provider server of the selected broadcast provider. The method also includes, downloading CAS information from a CAS server. 1. A method performed by a terminal , the method comprising:acquiring identity information of a broadcast reception device;acquiring, from a broadcast provider list server, broadcast provider information including a list of broadcast providers available to the broadcast reception device and at least one payment plan supported by the broadcast providers;selecting a broadcast provider among the list of broadcast providers and a payment plan of the broadcast provider among the at least one payment plan; andtransmitting, to a broadcast provider server of the selected broadcast provider, a subscription request including the identity information of the broadcast reception device,wherein a CAS installation request is transmitted from the broadcast provider server to a CAS server based on the subscription request, andwherein CAS information is generated based on information included in the CAS installation request.2. The method of claim 1 , wherein the CAS information including key information for broadcast information to be received from the broadcast provider server claim 1 , andwherein the at least one payment plan is associated with at least one of a channel type, a channel quality, and a content type.3. The method of claim 1 , wherein the identity information of the broadcast reception device comprises identity information of a security domain where ...

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Номер записи: 52
11-03-2021 дата публикации

Dynamically switching queueing schemes for network switches

Номер: US20210076109A1
Автор: Steven J. Hand
Принадлежит: Infinera Corp

An example system includes a network switch and a plurality of server computers communicatively coupled to the first network switch. The network switch includes a first transceiver configured to transmit data according to a first maximum throughput, and each server computer includes a respective second transceiver configured to transmit data according to a second maximum throughput that is less than the first maximum throughput. The network switch is configured to transmit, using the first transceiver according to the first maximum throughput, first data including a plurality of optical subcarriers to each of the server computers. Each of the server computers is configured to receive, using a respective one of the second transceivers, the first data from the network switch, and extract, from the first data, a respective portion of the first data addressed to the server computer.

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Номер записи: 53
05-03-2020 дата публикации

Transparent Clocking in a Cross Connect System

Номер: US20200076525A1
Автор: BOURA Jihad, BUABBUD George
Принадлежит:

A cross connect apparatus or system with transparent clocking, consistent with embodiments described herein, connects a selected source or ingress port to a selected destination or egress port and clocks data out of the selected egress port using a synthesized clock that is adjusted to match a recovered clock from the selected ingress port. A transparent clocking system may generate the synthesized clock signal with adjustments in response to a parts per million (PPM) rate detected for the associated recovered clock signal provided by the selected ingress port. The cross connect system with transparent clocking may be a 400G cross connect system with 10G resolution. The cross connect system with transparent clocking may be used in optical transport network (OTN) applications, for example, to provide an aggregator and/or an add-drop multiplexer (ADM) or to provide a reconfigurable optical add-drop multiplexer (ROADM) upgrade to a higher data rate. 1. A method for providing transparent clocking between a plurality of ingress ports and a plurality of egress ports in a cross-connect system , the method comprising:receiving a data signal at a first ingress port of the plurality of ingress ports and recovering a clock signal from the data signal;generating a synthesized clock signal based on the recovered clock signal, the synthesized clock signal being adjusted to match the recovered clock signal;passing data representing the received data signal from the first ingress port to a selected one of the egress ports; andwherein passing the data representing the received data signal includes clocking the data at the selected one of the egress ports in order to transmit a signal based on the synthesized clock signal such that the clock frequency of the signal transmitted by the selected one of the egress ports substantially matches the clock frequency of the data signal received at the first ingress port.2. The method of claim 1 , wherein generating the synthesized clock signal ...

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Номер записи: 54
18-03-2021 дата публикации

Data transmission method and apparatus

Номер: US20210083774A1
Автор: Huaping Qing, Qiuyou Wu, WEI SU
Принадлежит: Huawei Technologies Co Ltd

This application provides data transmission methods and apparatuses. One method includes: processing, by a network device, a first optical data unit (ODU) to obtain a second ODU, wherein a bit rate of the second ODU is lower than a bit rate of the first ODU; and sending, by the network device, the second ODU.

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Номер записи: 55
18-03-2021 дата публикации

Method and apparatus for adjusting bandwidth of transmission channel in flexible ethernet

Номер: US20210083943A1
Автор: Guodao CHEN, Jianhong Qin
Принадлежит: Huawei Technologies Co Ltd

This application discloses a method and an apparatus for adjusting a bandwidth of a transmission channel in flexible Ethernet. When the bandwidth of the transmission channel needs to be increased, bandwidths of all nodes are successively increased based on a direction reverse to a flow direction of service data, and when the bandwidth of the transmission channel needs to be decreased, bandwidths of all nodes are successively decreased based on the flow direction of the service data. In this way, a probability of a loss of service data transmitted from upstream to downstream is reduced in a process of adjusting the bandwidth of the transmission channel, and this improves reliability of service data transmission.

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Номер записи: 56
22-03-2018 дата публикации

LOSSLESS ADJUSTMENT METHOD OF ODUFLEX CHANNEL BANDWIDTH AND ODUFLEX CHANNEL

Номер: US20180083891A1
Автор: Ding Chiwu, Dong Limin, Su Wei, Wu Qiuyou
Принадлежит:

The embodiments of the present invention relate to the field of communications technologies, and disclose a lossless adjustment method of ODUflex channel bandwidth and an ODUflex channel. The lossless adjustment method includes: respectively adjusting, according to bandwidth adjustment indication request information, a time slot occupied by an ODUflex frame in a higher order optical channel data unit at an egress side of each network node on an ODUflex channel; and adjusting, according to rate adjustment indication information, a transmission rate of the ODUflex frame of each network node on the ODUflex channel, to enable the transmission rate of each network node on the ODUflex channel to be unified. 1. A method for adjusting ODUflex channel bandwidth , characterized in the method comprising:increasing a number of time slots (TS) occupied by an ODUflex frame in a Higher Order Optical Channel Data Unit (HO ODU) on an ODUflex channel; andafter receiving confirmation that time slot adjustment is complete, increasing a transmission rate of an ODUflex frame on the ODUflex channel.2. The method according to claim 1 , characterized in the method further comprising:receiving a bandwidth adjustment indication request information, wherein the bandwidth adjustment indication request information comprises the number of TS to be occupied by the ODUflex channel.3. The method according to claim 2 , characterized in the method further comprising:forwarding the bandwidth adjustment indication request information to an intermediate node or a destination node of the ODUflex channel.4. The method according to claim 3 , wherein the bandwidth adjustment indication request information is carried in an overhead area of an OTN frame.5. The method according to claim 3 , characterized in the method further comprising:receiving, from the destination node or intermediate node of the ODUflex channel, the confirmation that time slot adjustment is complete.6. The method according to claim 5 , ...

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Номер записи: 57
24-03-2016 дата публикации

OPTICAL COMMUNICATION CROSS-CONNECTION DEVICES AND SIGNAL PROCESSING METHOD THEREOF

Номер: US20160087739A1
Автор: KAMETANI Soichiro, KOGUCHI Kazuumi, Konishi Yoshiaki, Kubo Kazuo
Принадлежит: Mitsubishi Electric Corporation

Provided is an optical communication cross-connection device for exchanging an OTN signal through optical communications, including: a plurality of OTN signal processing units (OTNsp units) for asynchronously conducting OTN signal processing; and a space switch connected between the plurality of OTNsp units, for conducting bidirectional signal exchange for the OTN signal, in which a first and a second OTNsp units that conduct signal transmission among the plurality of OTNsp units subject the OTN signal to skew processing on one side and deskew processing corresponding to the skew processing on another side between the first and second OTNsp units or between a communicating end-side one of the first and second OTNsp units and a communicating end-side OTNsp unit of an optical communication cross-connection device of a communication counterpart destination for the optical communication cross-connection device, and share a clock for the signal transmission therebetween. 1. An optical communication cross-connection device for exchanging an OTN signal through optical communications , comprising:a plurality of OTN signal processing units for asynchronously conducting OTN signal processing; anda space switch connected between the plurality of OTN signal processing units, for conducting bidirectional signal exchange for the OTN signal,wherein a first OTN signal processing unit and a second OTN signal processing unit that conduct signal transmission among the plurality of OTN signal processing units subject the OTN signal to skew processing on one side and deskew processing corresponding to the skew processing on another side between the first OTN signal processing unit and the second OTN signal processing unit or between a communicating end-side one of the first OTN signal processing unit and the second OTN signal processing unit and a communicating end-side OTN signal processing unit of an optical communication cross-connection device of a communication counterpart ...

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Номер записи: 58
23-03-2017 дата публикации

DYNAMIC HITLESS RESIZING IN OPTICAL TRANSPORT NETWORKS

Номер: US20170085332A1
Автор: Su Wei, VAN HELVOORT Hubertus Adrianus Maria, VISSERS Maarten P.J., Yang Yang
Принадлежит:

The invention relates to techniques for controlling a dynamic hitless resizing in data transport networks. According to a method aspect of the invention, a network connection comprises M tributary slots defined in a payload area of a higher order transport scheme of the data transport network and the method comprises the steps of receiving a connection resize control signal at each of the nodes along the path of the network connection; adding at each node along the path in response to the connection resize control signal a second set of N tributary slots to the first set of the M tributary slots, such that the network connection comprises M+N tributary slots; and increasing, after M+N tributary slots are available for the network connection at each node along the path, a transport data rate of the network connection. 1. A method for controlling dynamic hitless resizing of an Optical Data Unit flex (ODUflex) network connection in a data transport network , wherein the ODUflex network connection comprises a set of M tributary slots; the method comprising:receiving a connection resize control signal;adding a set of N tributary slots to the set of the M tributary slots; andincreasing a bandwidth of the ODUflex network connection; wherein M and N are positive integers.2. The method according to claim 1 , further comprising:initiating sending of a data rate control signal hop-by-hop along a path of the ODUflex network connection, wherein the data rate control signal is discarded by a node which has not finished the adding the N tributary slots or marking for removal of the N tributary slots; andreceiving an acknowledgement to the data rate control signal from an egress end node.3. A method for controlling dynamic hitless resizing of an Optical Data Unit flex (ODUflex) network connection in a data transport network claim 1 ,wherein a path of the ODUflex network connection extends between two connection end nodes or over one or more intermediate nodes of the data transport ...

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Номер записи: 59
31-03-2022 дата публикации

Client signal transmission method, device and system and computer-readable storage medium

Номер: US20220103282A1
Автор: SONG Chen, Yan Yuan, Yuanbin Zhang
Принадлежит: ZTE Corp

Provided are a client signal transmission method, apparatus and system and a computer-readable storage medium. The method includes mapping a client signal into a predetermined container corresponding to the client signal; mapping the predetermined container into the corresponding number of first code blocks in a payload area of an optical transport network frame and inserting special idle code blocks during the mapping for rate compensation, where the first code blocks are obtained by dividing the payload area of the optical transport network frame; and sending the optical transport network frame carrying the predetermined container and configuration information of the predetermined container.

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Номер записи: 60
31-03-2022 дата публикации

Method and apparatus for transmitting configuration information, storage medium, and system

Номер: US20220103283A1
Автор: Yan Yuan, Yuanbin Zhang
Принадлежит: ZTE Corp

Provided are a method and apparatus for transmitting configuration information, a storage medium and a system. The method for transmitting configuration information includes: mapping a client signal into a predetermined container corresponding to the client signal; encoding configuration information of the predetermined container according to a predetermined format; and sending the optical transport network frame that carries the predetermined container and the encoded configuration information of the predetermined container in the payload area.

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Номер записи: 61
25-03-2021 дата публикации

Service Transmitting and Receiving Methods and Devices for Optical Transport Network (OTN)

Номер: US20210091870A1
Автор: YUAN Yan, ZHANG Yuanbin
Принадлежит:

The present application provides data transmitting and receiving methods and devices for an Optical Transport Network (OTN). The service transmitting method for the OTN includes that: Optical Data Unit (ODU) services are mapped into cells of a payload area of an OTN interface frame, the payload area including N cells with a fixed size, one cell being used for carrying one ODU service and N being an integer larger than or equal to 1; and the OTN interface frame is encapsulated and transmitted. 1. A service transmitting method for an Optical Transport Network (OTN) , comprising:mapping Optical Data Unit (ODU) services into cells of the payload area of an OTN interface frame, the payload area comprising N cells with a fixed size, one cell being used for carrying one ODU service, and N being an integer larger than or equal to 1; andencapsulating and transmitting the OTN interface frame.2. The method as claimed in claim 1 , whereinthe cells comprise data cells and control cells, the data cells are configured to carry the ODU services, the control cells are configured to carry control information for mapping the ODU services into the cells, and the control information comprises at least one of overhead information and monitoring information.3. The method as claimed in claim 2 , whereineach cell comprises a cell flag bit and a data field.4. The method as claimed in claim 3 , whereinthe first bit of each cell is the cell flag bit, and the value of the first bit is 1 or 0, 1 representing that the cell is a control cell and 0 representing that the cell is a data cell.5. The method as claimed in claim 1 , whereinunder a condition that the payload area is N times a size of each cell, the size of each cell is K bits, the size of the payload area is N*K, and the bandwidth of each cell is 1/N of the bandwidth of the payload area, K being an integer greater than 1; andunder a condition that the size of the payload area is a sum of N times of the size of each cell and F stuff bits, ...

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Номер записи: 62
25-03-2021 дата публикации

Data Transmission Method, Data Receiving Method, and Data Sending and Receiving System

Номер: US20210091877A1
Автор: ZHA Min
Принадлежит:

A method includes: generating indication information, where the indication information is used to indicate a resource allocation table corresponding to a first data unit in the plurality of data units; sending the indication information in a timeslot previous to a timeslot used to send the first data unit; and sending the plurality of data units, where a resource allocation table corresponding to each data unit is selected from a plurality of resource allocation tables in a cyclic manner, and a cyclically initial resource allocation table is the resource allocation table indicated by the indication information. 110.-. (canceled)11. A method , comprising:receiving indication information, wherein the indication information indicates a first resource allocation table corresponding to a first data unit in a plurality of data units; andconsecutively receiving the plurality of data units, wherein for each data unit of the plurality of data units a respective resource allocation table corresponding to the respective data unit is selected from a plurality of resource allocation tables in a cyclic manner, and an initially selected resource allocation table is the first resource allocation table indicated by the indication information.12. The method according to claim ii , wherein before receiving the indication information , the method further comprises:setting the plurality of resource allocation tables, wherein the plurality of resource allocation tables indicate timeslot allocation on a same physical link.13. The method according to claim ii , wherein for each data unit of the plurality of data units the respective resource allocation table corresponding to the respective data unit being selected from the plurality of resource allocation tables in the cyclic manner comprises:the first resource allocation table being selected to use in a first plurality of consecutive timeslots, and a second resource allocation table of the plurality of resource allocation tables being ...

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Номер записи: 63
26-06-2014 дата публикации

Optical transmission device including a bit rate adjustment function

Номер: US20140178073A1
Автор: Toru Katagiri
Принадлежит: Fujitsu Ltd

An optical transmission device, which transmits a first frame containing second frames, includes newly adding and allocating, when a bit rate of a specific second frame among the second frames is to be changed, a time slot corresponding to an increase in the bit rate of the specific second frame to time slots previously set for the second frames in time slots of the first frame; and inputting a dummy signal as data to the newly-added time slot while performing such a setting that both of: a data writing speed and a data reading speed; and a delay time between writing and reading of the data for the newly-added time slot are in agreement with both of: a data writing speed and a data reading speed; and a delay time between writing and reading of the data for each time slot of the previously-set time slots.

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Номер записи: 64
05-04-2018 дата публикации

Data Processing Method, Communications Device, and Communications System

Номер: US20180098076A1
Автор: Su Wei, VISSERS Maarten Petrus Joseph
Принадлежит:

A data processing method, a communications device, and a communications system, where in a process of transmitting a packet service, a code block stream carrying the packet service is first obtained, then, rate adaptation is performed on the obtained code block stream, and finally, the rate-adapted code block stream is mapped to an optical channel payload unit (OPU) signal. Compared with a mapping manner in which a Generic Framing Procedure (GFP) is used, the data processing method, the communications device, and the communications system feature low processing complexity and/or high bandwidth utilization. 1. A data processing method , optical transport network (OTN) , comprising:obtaining, by an optical device, a code block stream a packet service;performing, by the optical device, rate adaptation on the obtained code block stream; andmapping, by the optical device, the rate-adapted code block stream to an optical channel payload unit (OPU) signal.2. The method according to claim 1 , wherein performing the rate adaptation on the obtained code block stream comprises at least one of inserting an idle code block into the obtained code block stream claim 1 , wherein the idle code block comprises an idle code block type indicator claim 1 , wherein the idle code block does not carry the packet service claim 1 , and wherein a quantity of to-be-mapped code blocks in the rate-adapted code block stream within each OPU frame period is equal to a preset value (C).3. The method according to claim 1 , wherein mapping claim 1 , the rate-adapted code block stream to the OPU signal comprises:{'sub': m', 'm, 'mapping Ccode blocks to one OPU frame within each OPU frame period; and inserting the Cinto an overhead of the corresponding OPU frames, and'}{'sub': 'm', 'wherein the Ccomprises a quantity of to-be mapped code blocks in the rate-adapted code block stream.'}4. The method according to claim 1 , wherein mapping claim 1 , the rate-adapted code block stream to the OPU signal ...

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Номер записи: 65
12-05-2022 дата публикации

Optical line terminal and an optical network unit

Номер: US20220149933A1
Автор: Bart Pauwels, Carl Mertens, Koenraad SCHELFHOUT, Michael Fivez, Werner Van Hoof
Принадлежит: NOKIA SOLUTIONS AND NETWORKS OY

Example embodiments describe an optical line terminal, OLT, configured to perform determining a fragmentation allocation for respective ONUs; and notifying, the respective ONUs, of the fragmentation allocation. Other example embodiments relate to an optical network unit, ONU, configured to perform receiving, from the OLT, fragmentation allocation for fragmenting one or more packets; processing the packets in accordance with the fragmentation allocation to obtain fragmented and unfragmented packets; and forwarding, to the OLT, the fragmented and unfragmented packets in accordance with the dynamic upstream allocation map.

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Номер записи: 66
28-03-2019 дата публикации

Service Transmission Method And First Transmission Device

Номер: US20190098381A1
Автор: Qiuyou Wu, WEI SU
Принадлежит: Huawei Technologies Co Ltd

A service transmission method and a transmission device are disclosed. The method includes: mapping n client signals with a rate of t to ms/t load subareas of m lanes of flexible optical transport network (FlexO) frames, where a payload area of each of the m lanes of FlexO frames is divided into s/t load subareas, and each lane is transmitted using a FlexO lane with a transmission rate of s; configuring a FlexO type, timeslot overhead, and signal mapping information for each lane; and transmitting the m lanes of FlexO frames to a second transmission device by using m FlexO lanes with the transmission rate of s. The second transmission device is configured to parse, according to the FlexO type, the timeslot overhead, and the signal mapping information, the client signals carried in the ms/t load subareas.

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Номер записи: 67
26-03-2020 дата публикации

PHYSICAL NETWORK ORCHESTRATION FOR DATA CENTERS

Номер: US20200099581A1
Автор: de Silva Suran Saminda, Jain Vipin, Kapadia Shyam, Shah Nilesh
Принадлежит:

A method is provided in one example embodiment and includes creating a segment organization, which includes a configuration profile. The method also includes attaching the configuration profile to a server in the segment organization. The method further includes sending the attached configuration profile to a database in a physical network. 1. A method , comprising:attaching a virtual machine (VM) to a virtual switch;attaching the virtual switch to a physical switch in a physical network;communicate, information about the VM to the physical switch;accessing, based on the communicated information about the VM, a configuration profile for the VM from a network database; andconfiguring, based on the access configuration profile, the physical network to receive/send data from/to the virtual switch.2. The method of claim 1 , wherein the information includes a segment identification.3. The method of claim 1 , further comprising sending the configuration profile to a leaf in the physical network when a virtual server is attached to a physical switch in the physical network claim 1 , wherein the configuration profile allows the leaf to route traffic in the physical network from the virtual server.4. The method of claim 3 , further comprising send the configuration profile to the physical switch using a virtual station interface discovery protocol.5. The method of claim 3 , further comprising accessing claim 3 , using the communicated information claim 3 , the configuration profile in a database.6. The method of claim 3 , wherein the physical switch is a leaf in a CLOS network.7. The method of claim 1 , wherein the information includes a generic network global unique identifier.8. A non-transitory computer readable media that includes instructions for execution and when executed by a processor is operable to perform operations claim 1 , comprising:attaching a virtual machine (VM) to a virtual switch;attaching the virtual switch to a physical switch in a physical network; ...

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Номер записи: 68
04-04-2019 дата публикации

VIRTUALIZED SECTIONS FOR SECTIONAL CONTROL OF OPTICAL LINKS

Номер: US20190103939A1
Автор: AL SAYEED Choudhury A., Hinds Mark
Принадлежит:

Systems and methods are implemented at an Optical Add/Drop Multiplexer (OADM) node using virtual sections to provide sectional control over an optical link over a foreign-controlled optical network. The systems and methods include virtually splitting the optical link at a shelf processor associated with the OADM node; in a non-fault condition, obtaining and storing a power snapshot of the optical link and associated virtual sections thereon, from an optical spectrum monitor; responsive to a fault on one or more virtual sections of the virtual sections, obtaining a current power snapshot of the optical link and the associated virtual sections; and comparing the stored power snapshot and the current power snapshot of the one or more virtual sections and providing a fault alarm for the one or more virtual sections based on the comparing to a control plane for management thereof. 1. A method comprising:in an edge Optical Add/Drop Multiplexer (OADM) node having an optical spectrum monitor and a shelf processor communicatively coupled to the optical spectrum monitor to obtain power snapshots therefrom, virtually splitting the optical link associated with the edge OADM node into virtual sections managed by the shelf processor;in a non-fault condition, obtaining and storing a power snapshot of the optical link and associated virtual sections thereon, from the optical spectrum monitor;responsive to a fault on one or more virtual sections of the virtual sections, obtaining a current power snapshot of the optical link and the associated virtual sections;comparing the stored power snapshot and the current power snapshot of the one or more virtual sections and providing a fault alarm for the one or more virtual sections based on the comparing to a control plane for management thereof; andutilizing the virtual sections to provide sectional control of the optical link.2. The method of claim 1 , further comprising:implementing a sectional controller over the optical link via a ...

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Номер записи: 69
19-04-2018 дата публикации

METHODS AND SYSTEMS FOR FIBER OPTIC COMMUNICATION

Номер: US20180109318A1
Автор: Castro Jose M., Huang Yu, Kose Bulent, Lane Brett, Pimpinella Richard J.
Принадлежит: PANDUIT CORP.

The present invention relates in general to communication systems, and more specifically towards methods, systems, and devices that help improve transmission rates and spectral efficiency of intensity modulated (IM) or power modulated channels utilizing multi-level pulse amplitude modulation PAM-M. In an embodiment, the present invention used an iterative algorithm to open the eyes of an eye diagram in a relatively short number of steps. The algorithm, which may not require previous characterization of the channel, utilizes pseudo-random sequences, such as PSBS15 or PRQS10, and adaptive non-linear equalizers to optimize the pre-distortion taps. 11011-. (canceled) cm . A method of tuning a fiber optic communication system comprising the steps of:(a) generating a source signal X;{'sup': 'i', 'sub': 'P', '(b) pre-distorting, said source signal X by applying at least one pre-distortion equalizer to said source signal X to generate a pre-distorted signal X;'}{'sup': i', 'i, 'sub': 'P', '(c) transmitting said pre-distorted signal Xover an optical channel to generate a transmitted signal Y;'}{'sup': i', 'i', 'i, '(d) post-equalizing said transmitted signal Yby applying at least one post-equalization equalizer to said transmitted signal Yto generate a post-equalized signal Z;'}{'sup': 'i', 'evaluating said post-equalized signal Zto determine a performance of said fiber optic communication system, and'}(f) when said performance of said fiber optic communication system fails to meet a predefined threshold, updating said at least one pre-distortion equalizer and repeating steps (b)-(f),wherein i represents an index tracking each cycle of performing said steps (b)-(f).1211. The method of claim wherein said step (b) includes convolving said source signal X with a linear pre-distortion equalizer csuch that X=cX.13. The method of claim 12 , further comprising the steps of:{'sup': 'i', 'sub': 'L', 'computing a linear post-equalization equalizer b; and'}{'sup': i', 'i', 'i', 'i, ' ...

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Номер записи: 70
19-04-2018 дата публикации

Signal Transmission Method, Controller, and Signal Transmission System

Номер: US20180109343A1
Автор: Pan Shuncheng, Wei Wenxiong, Yang Yingchun
Принадлежит:

A signal transmission method includes receiving, by a controller, a request signal sent by a first transmitter. The method includes establishing, by the controller according to the request signal, a second optical path that connects the first transmitter to the second receiver in the optical switching network (OSN). The method includes sending, by the controller, to the second receiver according to the request signal, a reset signal used to instruct the second receiver to be reset to an initial state. The method includes sending, by the controller, an acknowledgement signal to the first transmitter, by using the second optical path, an optical signal to the second receiver. 1. A signal transmission method , wherein the method is applied to an optical transmission system that comprises an optical switching network (OSN) and a controller that is coupled to the OSN and configured to control the OSN , wherein the OSN comprises a first optical path that connects a first transmitter to a first receiver , and wherein the method comprises:receiving, by the controller, a request signal from the first transmitter, wherein the request signal is used to request to send an optical signal to a second receiver;establishing, by the controller, according to the request signal and by controlling an optical switch in the OSN, a second optical path that connects the first transmitter to the second receiver in the OSN;sending, by the controller to the second receiver according to the request signal, a reset signal used to instruct the second receiver to be reset to an initial state; andsending, by the controller, an acknowledgement signal to the first transmitter, wherein the acknowledgement signal is used to instruct the first transmitter to send, using the second optical path, the optical signal to the second receiver.2. The method according to claim 1 , wherein sending claim 1 , by the controller claim 1 , the acknowledgement signal to the first transmitter comprises sending claim 1 ...

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Номер записи: 71
29-04-2021 дата публикации

SIGNAL QUALITY INFORMATION NOTIFICATION METHOD AND RELAY COMMUNICATION APPARATUS

Номер: US20210126707A1
Автор: KOBAYASHI Shokei, KUWABARA Seiki, Tanaka Takafumi, Yamada Yoshiaki
Принадлежит: Nippon Telegraph and Telephone Corporation

A communication system transmits relay data through a communication path including a plurality of sections in which different communication schemes are used. A relay communication device is provided between a first section and a second section which are adjacent sections. The relay communication device includes a receiving unit receiving the relay data from the first section through a frame of a first communication scheme, and a relaying unit configuring, in a frame of a second communication scheme used to transmit the relay data to a relay destination, signal quality information representing signal quality calculated for a physical link in each of the sections through which the relay data is transmitted before arriving at the relay communication device, and outputting the frame of the second communication scheme to the second section. 1. A signal quality information notification method in a communication system for transmitting relay data through a communication path including a plurality of sections in which different communication schemes are used , the signal quality information notification method comprising:by a relay communication device provided between a first section corresponding to one of the plurality of sections and a second section corresponding to another of the plurality of sections located adjacent to the first section,receiving the relay data from the first section through a frame of a first communication scheme; andperforming relaying including configuring, in a frame of a second communication scheme used to transmit the relay data to a relay destination, signal quality information representing signal quality calculated for a physical link in each of the sections through which the relay data is transmitted before arriving at the relay communication device, and outputting the frame of the second communication scheme to the second section.2. The signal quality information notification method according to claim 1 , wherein claim 1 ,in the performing ...

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Номер записи: 72
28-04-2016 дата публикации

Flexible ethernet and multi link gearbox mapping procedure to optical transport network

Номер: US20160119075A1
Автор: Eric Maniloff, Sebastien GAREAU
Принадлежит: Ciena Corp

A flexible mapping method to map a Physical Coding Sublayer (PCS) structure from Flexible Ethernet and/or Multi Link Gearbox (MLG) to Optical Transport Network (OTN), includes receiving one or more Virtual Lanes; and mapping each of the one or more Virtual Lanes into a Tributary Slot, wherein a rate and number of the Tributary Slot(s) in OTN is set based on a rate and number of the one or more Virtual Lanes. A transport system and a flexible de-mapping method are also described. The systems and methods map the generalized MLG-style group of lanes (virtual PHYs/PMDs) into an OPUflex Tributary Slot (TS) structure, keeping PCS structures intact, and creates a single ODUflex container with a matching rate of FlexE for end-to-end flow.

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Номер записи: 73
26-04-2018 дата публикации

TRANSPONDER FOR A RADIO-OVER-FIBRE TRANSMISSION SYSTEM ALLOWING RETRANSMISSION FROM THE ANTENNA MANAGEMENT INTERFACE

Номер: US20180115368A1
Автор: Chanclou Philippe, Pizzinat Anna
Принадлежит:

A transmission system includes: an optical transmission module capable of modulating a first digital radio signal in order to obtain a first optical signal; an optical reception module capable of receiving a second optical signal and demodulating same in order to obtain a demodulated radio signal; and a digitizing module capable of digitizing the demodulated radio signal in order to obtain a second digital radio signal. The transmission module includes: a module for adding a first management signal to the first digital radio signal, the rate of the first management signal being less than that of the first digital radio signal. The optical digitizing module includes an extraction module capable of extracting a second management signal from the demodulated radio signal, the rate of the second management signal being less than that of the second digital radio signal. 1. An optoelectronic transponder for a radio-over-fiber transmission system , comprising:an optical transmission module configured to modulate a first digital radio signal in order to obtain a first optical signal;an optical reception module configured to receive a second optical signal and demodulate the second optical signal in order to obtain a demodulated radio signal; anda digitizing module configured to digitize the demodulated radio signal in order to obtain a second digital radio signal; 'an addition module configured to add a first management signal to the first digital radio signal, wherein throughput of the first management signal is less than that of the first digital radio signal;', 'wherein the transmission module comprises 'an extraction module configured to extract a second management signal from the demodulated radio signal, wherein throughput of the second management signal is less than that of the second digital radio signal.', 'and wherein the optical digitizing module comprises2. The optoelectronic transponder as claimed in claim 1 , wherein the addition module comprises an electronic ...

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Номер записи: 74
07-05-2015 дата публикации

TRANSMISSION APPARATUS

Номер: US20150125148A1
Автор: Furukawa Hayato, Katagiri Toru, ODASHIMA Wataru
Принадлежит:

A transmission apparatus includes: a first mapping unit configured to allocate a first frame that stores a client signal to an intermediate frame; a second mapping unit configured to allocate the intermediate frame to a second frame that has a higher bit rate than a bit rate of the first frame; and a rate controller configured to control a bit rate of the intermediate frame based on the bit rate of the first frame and the bit rate of the second frame. 1. A transmission apparatus comprising:a first mapping unit configured to allocate a first frame that stores a client signal to an intermediate frame;a second mapping unit configured to allocate the intermediate frame to a second frame that has a higher bit rate than a bit rate of the first frame; anda rate controller configured to control a bit rate of the intermediate frame based on the bit rate of the first frame and the bit rate of the second frame.2. The transmission apparatus according to claim 1 , whereinthe rate controller controls the bit rate of the intermediate frame to be higher than or equal to the bit rate of the first frame.3. The transmission apparatus according to claim 2 , whereinthe rate controller controls the bit rate of the intermediate frame to be a bit rate obtained by dividing the bit rate of the second frame by an integer.4. The transmission apparatus according to claim 1 , whereinwhen the bit rate of the second frame is H and the bit rate of the intermediate frame is M, the first mapping unit allocates a signal in the first frame to H/M intermediate frames.5. A transmission apparatus comprising:a first mapping unit configured to allocate a plurality of low-speed ODUs that respectively allocate client signals to a plurality of tributary slots;a second mapping unit configured to allocate the tributary slots to a high-speed ODU that has a bit rate higher than a bit rate of the low-speed ODUs;a transmitter module configured to generate an OTU frame from signals which are allocated to the high- ...

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Номер записи: 75
09-04-2020 дата публикации

METHOD AND APPARATUS FOR SENDING AND RECEIVING MULTIFRAME, AND STORAGE MEDIUM

Номер: US20200112383A1
Автор: Liu Feng
Принадлежит:

Provided are a method and apparatus for sending and receiving a multiframe, a communication device, and a communication network system. The method includes: determining a multiframe identifier used for identifying a multiframe number according to a number of timeslots of a physical layer, where the multiframe number is the number of frames constituting one multiframe; and sending the multiframe to a receiving end, where the multiframe carries the multiframe identifier. Further provided is a computer storage medium. 1. A method for sending a multiframe , comprising:determining, according to a number of timeslots of a physical layer, a multiframe identifier for identifying a multiframe number, wherein the multiframe number is a number of frames constituting the multiframe; andsending the multiframe to a receiving end, wherein the multiframe identifier is carried in the multiframe.2. The method of claim 1 , wherein the multiframe number is nth power of 2 claim 1 , wherein the n is a minimum positive integer that causes the multiframe number greater than or equal to the number of the timeslots.3. The method of claim 1 , wherein identifier values of the multiframe identifier are sequentially carried in preset positions of overhead blocks of respective frames constituting the multiframe claim 1 , wherein a number of the identifier values is the same as the multiframe number.4. The method of claim 3 , wherein the identifier values of the multiframe identifier are a preset number of consecutive “0”s and the preset number of consecutive “1”s in sequence claim 3 , wherein the multiframe number is an even number and the preset number is half of the multiframe number.5. The method of claim 3 , wherein each of the preset positions is an Overhead Multiframe Indicator (OMF) field of respective one of the overhead blocks.6. The method of claim 1 , wherein before the determining claim 1 , according to the number of the timeslots of the physical layer claim 1 , the multiframe ...

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Номер записи: 76
13-05-2021 дата публикации

COMMUNICATION SYSTEM AND METHOD FOR AN OPTICAL LOCAL AREA NETWORK

Номер: US20210143913A1
Автор: Soto Alexander Ivan, SOTO Walter Glenn
Принадлежит:

An optical local area network includes a passive optical distribution fabric interconnecting a plurality of nodes including a first node and a plurality of remaining nodes, a hub that includes the first node and a control module, and a client network adapter coupled to each of the remaining nodes for responding to the control module. The control module controls timing for each of the client network adapters to transmit signals over the passive optical distribution fabric and distribution of signals to each of the nodes. 1. A Local Area Network (LAN) client for a passive optical LAN , the passive optical LAN disposed to having one or more passive optical splitters for coupling the LAN client over one or more optical fibers to the head end of the passive optical LAN , the LAN client for a passive optical LAN comprising of:an optical interface for converting a downstream optical signal on a downstream optical wavelength to a downstream electrical signal and for converting an upstream electrical signal to an upstream optical signal and emitting the upstream optical signal on an upstream optical wavelength;at least one network interface for receiving user data; anda control module electrically coupled to the optical interface and electrically coupled to the at least one network interface and wherein the control module processes the downstream electrical signal having a downstream control and downstream data information to recover an upstream bandwidth allocation from the downstream control information and wherein the control module receives user data from the at least one network interface and the control module responsive to the upstream bandwidth allocation generates the upstream electrical signal having upstream control and upstream data information and wherein at least a portion of the user data is included in the upstream data information,whereby the LAN client for a passive optical LAN communicates user data upstream responsive to an upstream bandwidth allocation.2 ...

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Номер записи: 77
03-05-2018 дата публикации

METHOD FOR MAPPING PACKET SERVICE ONTO OPTICAL TRANSPORT NETWORK, AND OTN DEVICE

Номер: US20180123718A1
Автор: Gao Hongjun, Liu Mingwei, Yan Zhiyong
Принадлежит: Huawei Technologies Co., Ltd.

A method for mapping a packet service onto an optical transport network is disclosed. An embodiment of the method includes: receiving a packet service message from an access side, identifying the message by using a first board number of a first line board in which a first egress is located and a first port number of the first egress; sending the message to the first line board corresponding to the first board number; and encapsulating the message that is sent to the first line board, mapping the encapsulated message onto a first optical channel data unit ODU corresponding to the first port number, and sending the first ODU by using the first egress. Cross-connect scheduling of any bandwidth in any direction is implemented based on a packet service, and packet services on different tributary boards share different ODU timeslots or a same ODU timeslot on a same line board. 1. A method for mapping a packet service onto an optical transport network (OTN) , comprising:receiving a packet service message from an access side, and identifying the packet service message by using a first board number of a first line board in which a first egress is located and a first port number of the first egress;sending the packet service message to the first line board corresponding to the first board number; andencapsulating the packet service message that is sent to the first line board, mapping an encapsulated packet service message onto a first optical channel data unit (ODU) corresponding to the first port number, and sending the first ODU by using the first egress.2. The method according to claim 1 , wherein the first port number is in a one-to-one correspondence with a number of the first ODU.3. The method according to claim 1 , wherein the first ODU comprises at least one first sub-port number of the first egress.4. The method according to claim 3 , wherein the method further comprises:receiving the packet service message from a network side, demapping the packet service message ...

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Номер записи: 78
04-05-2017 дата публикации

OPTICAL RELAY DEVICE, OPTICAL COMMUNICATION SYSTEM, OPTICAL RELAY METHOD, AND STORAGE MEDIUM

Номер: US20170126326A1
Автор: Aida Ryuji
Принадлежит: NEC Corporation

An optical relay device is provided which is capable of outputting control signal light without equipping a light source for the control signal light and capable of flexibly managing and changing a wavelength of the control signal light in accordance with a state of a network. The optical relay device includes an optical receiving unit that receives a wavelength multiplexed optical signal, a control unit that specifies a first wavelength and outputting notification information, and a processing unit that selects an optical signal having the first wavelength from the received wavelength multiplexed optical signal, applying intensity-modulation in accordance with the notification information to the selected optical signal, adding the intensity-modulated optical signal back to the wavelength multiplexed optical signal, and outputting the wavelength multiplexed optical signal. 1. An optical relay device comprising:an optical receiving unit that receives a wavelength multiplexed optical signal;a control unit that specifies a first wavelength and outputting notification information; anda processing unit that selects an optical signal having the first wavelength from the received wavelength multiplexed optical signal, applies intensity-modulation in accordance with the notification information to the selected optical signal, adds the intensity-modulated optical signal back to the wavelength multiplexed optical signal, and outputs the wavelength multiplexed optical signal.2. The optical relay device according to claim 1 ,wherein the processing unit applies the intensity-modulation by filtering light power of the optical signal having the first wavelength in accordance with the notification information.3. The optical relay device according to claim 2 ,wherein the processing unit includes a variable optical attenuator which attenuates light power of the optical signal having the specified wavelength in accordance with the control information.4. The optical relay device ...

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Номер записи: 79
01-09-2022 дата публикации

PROGRAMMABLE PHOTONIC SWITCH MODES

Номер: US20220278764A1
Автор: AGARWAL PUNEET KUMAR, Consul Koutuk, KRISHNA VISHNU
Принадлежит:

The present disclosure provides a method for providing a white box transponder (). The method includes a step of receiving the plurality of user inputs () from an orchestrator () at a programmable photonic switch mode system (). The method includes another step of receiving the real-time data from an optical line system (). The method includes yet another step of computing a run-time mode of operation based on the plurality of user inputs (), the real-time data from the optical line system (), a complete path computation information, and the network dimensioning data with facilitation of the programmable photonic switch mode application (). The complete path computation information is received from a path computation engine (). The method includes yet another step of sending the computed run-time mode of operation to the white box transponder () for dynamically configuring the white box transponder (). 1108132108. A programmable photonic switch mode system () for providing real-time dynamic configurations at a white box transponder () , the programmable photonic switch mode system () comprising:{'b': 110', '110', '104', '102, 'a programmable photonic switch mode application (), wherein the programmable photonic switch mode application () receives a plurality of user inputs () from an orchestrator (); and'}{'b': 108', '122', '108', '108, 'wherein the programmable photonic switch mode system () receives real-time data from an optical line system (), wherein the programmable photonic switch mode system () is associated with an SDN controller, wherein the programmable photonic switch mode system () performs computation of run-time mode of operation.'}2108. The programmable photonic switch mode system () as claimed in claim 1 , wherein at least one of:{'b': 116', '118', '120', '120', '108, 'an SDN controller () comprising a yang store () and a path computation engine (), wherein the path computation engine () provides a complete path computation information to the ...

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Номер записи: 80
02-05-2019 дата публикации

Transparent deployment of packet services using optical transport network

Номер: US20190132045A1
Автор: Akshaya NADAHALLI, Antonello Bonfanti, Gabriele M. GALIMBERTI, Manoj Kumar, Zafar Ali
Принадлежит: Cisco Technology Inc

A method is disclosed for use by a network element coupled with an optical transport network. The method comprises calculating an optical path from a first packet-terminated optical interface of the network element to a second packet-terminated optical interface of a destination network element coupled with the optical transport network, and signaling the optical transport network to create the optical path. The method further comprises creating an Ethernet interface corresponding to the first packet-terminated optical interface, and adding the Ethernet interface to an Ethernet bundle interface. The method further comprises communicating across the optical path using addressing of the Ethernet bundle interface.

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Номер записи: 81
03-06-2021 дата публикации

METHOD AND SYSTEM FOR ASSIGNING RESOURCE FAILURE SEVERITY IN COMMUNICATION NETWORKS

Номер: US20210168020A1
Автор: Gerstel Ornan Alexander
Принадлежит:

A method for assigning a severity to failure indications of network resources in a multilayered communication network includes in a processor, receiving one or a plurality of failure indications related to a failure of one or more network resources from a plurality of network resources in a communication network. A severity may be assigned to the one or said plurality of failure indications based on an impact on data, wherein assigning the severity includes at least one of: assigning a static severity based on a single traffic impact assessment in the communication network due to the one or more failed network resources, and assigning a dynamic severity based on continuous or periodic traffic impact assessments in the communication network due to the one or more failed network resources. The severity of the one or said plurality of failure indications may be outputted on an output device. 1. A method for assigning , a severity to failure indications of network resources in a communication network , the method comprising:In a processor receiving one or a plurality of failure indications related to a failure of one or more network resources from a plurality of network resources in a communication network;assigning a severity to the one or said plurality of failure indications based on an impact on data traffic in the communication network due to the one or more failed network resources from said plurality of network resources by choosing at least one of: assigning a static severity based on a single traffic impact assessment in the communication network due to the one or more failed network resources, and assigning a dynamic severity based on continuous or periodic traffic impact assessments in the communication network due to the one or more failed network resources; andon an output device, outputting the severity of the one or said plurality of failure indications.2. The method according to claim 1 , wherein the communication network comprises at least two network ...

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Номер записи: 82
09-05-2019 дата публикации

METHOD FOR TRANSMITTING CLIENT SIGNAL IN OPTICAL TRANSPORT NETWORK, AND OPTICAL TRANSPORT DEVICE

Номер: US20190140759A1
Автор: Su Wei
Принадлежит:

A method for transmitting a client signal in an optical transport network includes: dividing a payload of an optical payload unit signal into m first-granularity tributary slots; dividing one of the m first-granularity tributary slots into n second-granularity tributary slots, where a rate of the first-granularity tributary slot is n times that of the second-granularity tributary slot, m is a positive integer, and n is a positive integer greater than 1; mapping a first client signal onto a payload in which one or more of the n second-granularity tributary slots are located; adding an overhead of the first-granularity tributary slot and an overhead of the second-granularity tributary slot for the optical payload unit signal, to generate an optical data unit signal; and sending the optical data unit signal. 1. A method for transmitting a client signal in an optical transport network (OTN) , wherein the method comprises:dividing, by an OTN device, a payload of an optical payload unit (OPU) signal into m first-granularity tributary slots;dividing, by the OTN device, one of the m first-granularity tributary slots into n second-granularity tributary slots, wherein a rate of the first-granularity tributary slot is n times that of a second-granularity tributary slot of the n second-granularity tributary slots, m is a positive integer, and n is a positive integer greater than 1;generating, by the OTN device, an optical data unit signals (ODU), wherein generating the ODU signal comprises mapping a first client signal onto a payload in which one or more of the n second-granularity tributary slots are located and adding an overhead of a first-granularity tributary slot of the m first-granularity tributary slots and an overhead of the second-granularity tributary slot for the OPU signal; andsending, by the OTN device, the ODU signal.2. The method according to claim 1 , wherein a value of n is determined based on a rate claim 1 , a transmission distance claim 1 , and/or a ...

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Номер записи: 83
09-05-2019 дата публикации

Service Sending Method and Apparatus, Service Receiving Method and Apparatus, and Network System

Номер: US20190140861A1
Автор: XU Xiaofei, Zhang Xiaojun, ZHONG Qiwen
Принадлежит:

The present disclosure relates to a service sending method and apparatus, and a service receiving method and apparatus. One example service sending method includes obtaining, by a network device, a first data stream and a second data stream, and inserting the first data stream into the second data stream to generate a third data stream. The third data stream includes a first information block and a second information block, the first information block is used to carry the first data stream, the second information block is used to carry a first data stream distribution indication map, the first data stream distribution indication map is used to indicate a location of the first information block, and the second information block is identified by using a preset map block type. 1. A service sending method , wherein the method comprises:obtaining, by a network device, at least two data streams, wherein the at least two data streams comprise a first data stream and a second data stream; the third data stream comprises a first information block and a second information block, and the first information block and the second information block are generated from the second data stream; and', 'the first information block is used to carry the first data stream, the second information block is used to carry a first data stream distribution indication map, the first data stream distribution indication map is used to indicate a location of the first information block, and the second information block is identified by using a preset map block type; and, 'inserting the first data stream into the second data stream to generate a third data stream, whereinsending the third data stream.2. The method according to claim 1 , wherein the method further comprises:obtaining the second data stream;identifying at least two idle blocks in the second data stream; andgenerating the first information block and the second information block at locations of the at least two idle blocks.3. The method ...

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Номер записи: 84
10-06-2021 дата публикации

PSEUDOWIRE PROTECTION USING A STANDBY PSEUDOWIRE

Номер: US20210176178A1
Автор: Pan Ping
Принадлежит:

Providing protection to network traffic includes sending a Pseudowire protection configuration parameter for configuring a standby Pseudowire between a source node and a destination node, receiving a Pseudowire configuration acknowledgement indicating whether the Pseudowire protection configuration parameter has been accepted by the destination node, and in the event that the Pseudowire protection configuration parameter has been accepted by the destination node, using the standby Pseudowire, wherein the standby Pseudowire's configured based at least in part on the Pseudowire protection configuration parameter. 1. A method comprising:configuring, by a provider edge node device comprising a processor, three or more redundant pseudowires with configuration data containing a pseudowire type length variable (TLV) coded precedence value for each pseudowire;designating one of the redundant pseudowires as an active pseudowire; andforwarding, by the provider edge node device in response to the active pseudowire becoming unavailable, data traffic to one of the redundant pseudowires, having a lower TLV coded precedence value than a configured pseudowire TLV coded precedence value of the active pseudowire.2. The method of claim 1 , further comprising initiating a switchover of the data traffic from the active pseudowire to the one of the redundant pseudowires.3. The method of claim 2 , wherein the switchover is initiated in response to a detection of a failure of the active pseudowire and a determination that the pseudowire TLV coded precedence value of the one of the redundant pseudowires is lower than the pseudowire TLV coded precedence value of the active pseudowire.4. The method of claim 2 , further comprising initiating preemption of the data traffic on the one of the redundant pseudowires in response to a determination that an amount of the data traffic on the active pseudowire exceeds an available bandwidth of the one of the redundant pseudowires.5. The method of claim ...

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Номер записи: 85
24-05-2018 дата публикации

DATA TRANSMISSION METHOD AND DEVICE

Номер: US20180145782A1
Автор: Liao Jinqiu, LIU CHAO, Xiao Xin, YIN Jian
Принадлежит:

Embodiments of the present disclosure provide a data transmission method and a device, and the method includes: determining synchronization header indication information indicating a frame header location of a first code stream, where the first code stream is obtained by encoding CPRI service data; decoding the first code stream to obtain a second code stream, where the first code stream is a 10B code stream, and the second code stream is an 8B code stream, or the first code stream is a 66B code stream, and the second code stream is a 64B code stream; inserting frame header indication information indicating a frame header location of the second code stream into the second code stream according to the synchronization header indication information; and mapping the second code stream and the frame header indication information into an OPU in an ODU frame. 1. A data transmission method , comprising:determining synchronization header indication information indicating a frame header location of a first code stream, wherein the first code stream is obtained by encoding common public radio interface (CPRI) service data;decoding the first code stream to obtain a second code stream, wherein the first code stream is a 10B code stream, and the second code stream is an 8B code stream, or the first code stream is a 66B code stream, and the second code stream is a 64B code stream;inserting frame header indication information indicating a frame header location of the second code stream into the second code stream according to the synchronization header indication information; andmapping the second code stream and the frame header indication information into an optical channel payload unit (OPU) in an optical channel data unit (ODU) frame.2. The method according to claim 1 , wherein mapping the second code stream and the frame header indication information into an OPU in an ODU frame comprises:performing timeslot division on the OPU based on a minimum granularity bandwidth of the ...

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Номер записи: 86
04-06-2015 дата публикации

Method and apparatus for transmitting data in optical transport network

Номер: US20150155970A1
Автор: Je Soo Ko, Jong-Yoon Shin, Jongho Kim, Kwangjoon Kim
Принадлежит: Electronics and Telecommunications Research Institute ETRI

A method of transmitting data in an optical transport network is provided. The method comprises generating an optical transmission unit frame including an in-band area including a first area to which information data is allocated and a second area to which the information data is not allocated and an out-band area including parity information and transmitting the data through the optical transmission unit frame.

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Номер записи: 87
21-08-2014 дата публикации

Systems and methods of communicating path status in optical networks

Номер: US20140233939A1
Автор: Catherine H. Yuan, Fredrick S. Gruman
Принадлежит: Fujitsu Network Communications Inc

The present disclosure may include a method to be performed by an electronic device in an optical network. The method may include generating a message associated with a slot and at least one connection identification (ID) corresponding to the slot. The message may include a slot counter region configured to identify the slot, a request region configured to activate a protect path utilizing the slot, a connection ID counter region configured to identify the at least one connection ID, and a status region configured to convey status of the at least one connection ID corresponding to the slot. The method may also include transmitting the message to other electronic devices in the optical network. The disclosure also includes associated systems and apparatuses.

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Номер записи: 88
07-05-2020 дата публикации

Data Transmission Methods, Apparatuses, Devices, and System

Номер: US20200145119A1
Автор: Haizhou Xiang, Min Zha, Rixin LI, Yuchun Lu, Zhigang Zhu
Принадлежит: Huawei Technologies Co Ltd

A data transmission apparatus, a data transmission system, and a data transmission method for implementing flexible Ethernet (FlexE) data transmission in an upstream/downstream asymmetric manner includes obtaining a plurality of first data packets that come from different Media Access Control (MAC) clients, where the different MAC clients receive respective second data packets over respective second FlexE virtual links; and sending the plurality of first data packets to a transmit end of the second data packets over a first FlexE virtual link that corresponds to the different MAC clients.

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Номер записи: 89
01-06-2017 дата публикации

Low Cost Gain Clamped EDFA for TWDM Passive Optical Network Application

Номер: US20170155461A1
Автор: Cedric Fung Lam, Changhong Joy Jiang, Chiachi Wang, Daoyi Wang, Liang Du, Xiangjun Zhao
Принадлежит: Google LLC

A communication system includes a first optical system and a second optical system optically connected to a clamping laser and a pump laser. The first optical system includes first and second optical splitters. The first optical splitter is configured to receive a clamping laser signal from the clamping laser and split the signal into split clamping laser signals. The second optical splitter is configured to receive a pump laser signal from the pump laser and split signal into split pump laser signals. The second optical system is optically connected to the first optical system and includes amplifier systems. Each amplifier system is configured to receive a multiplexed signal. The second optical system includes first and second combiners optically connected to an erbium-doped fiber. The first combiner is optically connected to the first splitter, and the second combiner is optically connected to the second splitter.

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Номер записи: 90
01-06-2017 дата публикации

Transmission apparatus and plug-in unit

Номер: US20170155501A1
Автор: Toshihisa Kyouno
Принадлежит: Fujitsu Ltd

A transmission apparatus includes: a first plug-in unit including: a clock generator to generate a first clock, a first frame-pulse generator to generate a first frame-pulse-signal based on the first clock; a detector to detect a phase-difference between a first phase of the first frame-pulse-signal and a second phase of a second frame-pulse-signal transmitted from other plug-in unit, and generate phase-difference information based on the phase-difference, and a first transmitter to transmit a control-signal including the phase-difference information to the other plug-in unit; and a second plug-in unit being the other plug-in unit, including: a receiver to receive the control-signal, a controller to control a phase of a second clock of the second plug-in unit, based on the phase-difference information, a second frame-pulse generator to generate the second frame-pulse-signal based on the second clock, and a second transmitter to transmit the second frame-pulse-signal to the first plug-in unit.

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Номер записи: 91
24-06-2021 дата публикации

OPTICAL WAVELENGTH MULTIPLEX TRANSMISSION SYSTEM, OPTICAL WAVELENGTH MULTIPLEX APPARATUS, AND STANDBY SYSTEM CHECKING METHOD

Номер: US20210194616A1
Автор: Yamamoto Tetsuya
Принадлежит: NEC Corporation

An optical wavelength multiplex transmission system includes a redundant configuration composed of an active system and a standby system between a first terminal station apparatus and a second terminal station apparatus. The first terminal station apparatus includes a light source configured to output dummy light, a coupler configured to insert the dummy light into the standby system, and a control unit configured to vary the dummy light. The second terminal station apparatus includes a coupler configured to extract the dummy light from the standby system and a detector configured to detect the extracted dummy light. The optical wavelength multiplex transmission system can identify a route of the standby system between the first terminal station apparatus and the second terminal station apparatus according to a result of the detection by the detector and check whether the standby system is normal. 1. (canceled)2. (canceled)3. An optical wavelength multiplex transmission system comprising a redundant configuration composed of an active system and a standby system using first and second optical lines that are set between a first terminal station apparatus and a second terminal station apparatus , wherein first and second couplers provided for the first and second optical lines, respectively;', 'a light source configured to generate dummy light;', 'a selective switch configured to select one of the first and second couplers corresponding to the standby system and supply the dummy light to the selected coupler; and', 'a control unit configured to control the selective switch and vary the dummy light,, 'the first terminal station apparatus comprises third and fourth couplers provided for the first and second optical lines, respectively, and configured to extract the dummy light; and', 'first and second detectors connected to the third and fourth couplers, respectively, and configured to detect the extracted dummy light, and, 'the second terminal station apparatus ...

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Номер записи: 92
14-06-2018 дата публикации

NETWORK FRAME HOLD TIME PARAMETER

Номер: US20180167331A1
Автор: Mohan Rupin T, Puttagunta Krishna, Rahul Kumar
Принадлежит:

According to an example, coordination of adjustments to network frame hold time parameters between network devices in a network is initiated based on a trigger condition. Time data may be obtained from a plurality of network devices in the network, where the time data describes a network frame hold time parameter of each network device in the plurality and a network frame processing time of each network device. A set of affected network devices affected by network back pressure in the network, and a set of non-affected network devices in the plurality not included in the set of affected network devices, may be determined. Based on the time data, a pairing may be determined between a time-available network device from the set of non-affected network devices and a time-needed network devices, from the set of affected network devices, to receive an allocation of time credit from the time-available network device. 1. A network system , comprising:a trigger module to initiate, based on a trigger condition, coordination of adjustments to network frame hold time parameters between network devices in a network;a time information module to obtain time data from a plurality of network devices in the network, the time data describing a network frame hold time parameter of each network device in the plurality and a network frame processing time of each network device in the plurality;a network back pressure determination module to determine, based on the time data, a set of affected network devices in the plurality being affected by network back pressure in the network and a set of non-affected network devices in the plurality not included in the set of affected network devices; anda pairing module to determine, based on the time data, a pairing between a time-available network device in the set of non-affected network devices and a time-needed network device in the set of affected network devices, the time-needed network device being a candidate for receiving an allocation of ...

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Номер записи: 93
30-05-2019 дата публикации

DATA IN MOTION STORAGE SYSTEM AND METHOD

Номер: US20190166414A1
Автор: Barak Naftaly, DAMAGHI Daniel M., Harlev Ohad, Litvin Ariel, McGuffin Asher, McManamon Paul Francis, Willner Alan Eli
Принадлежит:

A data storage system is disclosed that includes a recirculating loop storing data in motion. The data may be carried by a signal via the loop including one or more satellites or other vessels that return, for example by reflection or regeneration, the signals through the loop. The loop may also include a waveguide, for example an optical fiber, or an optical cavity. Signal multiplexing may be used to increase the contained data. The signal may be amplified at each roundtrip and sometimes a portion of the signal may be regenerated. 1. A data storage system comprising:a recirculating loop configured to maintain a laser signal carrying the digital data in motion and including an optical waveguide, an optical waveguide coupler, and a regenerator;a signal generator configured to generate a laser signal carrying the digital data and to transmit the laser signal into an input/output optical waveguide;the optical waveguide coupler coupling the laser signal between the input/output optical waveguide and the optical waveguide; andthe regenerator coupled to the optical waveguide and configured to at least one of amplify and regenerate the laser signal through the optical waveguide.2. The system of claim 1 , a data management system configured to manage digital data in the data storage system claim 1 ,wherein the recirculating loop comprises an eraser configured to erase, according to timing based on information provided by the data management system, a portion of the laser signal carrying a block of data of the digital data, the portion of the laser signal being less than an entirety of the laser signal.3. The system of claim 1 , wherein the signal generator is configured to generate a multiplexed signal as the laser signal claim 1 , the multiplexed signal comprising a first set of multiplexed laser signals claim 1 , such that a first multiplexed laser signal of the first set carries data other than a second multiplexed laser signal of the first set claim 1 , each laser ...

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Номер записи: 94
01-07-2021 дата публикации

Data forwarding method and device

Номер: US20210203588A1
Автор: Qiwen Zhong, Xiaofei XU, Xiaojun Zhang
Принадлежит: Huawei Technologies Co Ltd

This application discloses a data forwarding method and device. The method includes: obtaining a first data unit sequence stream by using a first logical ingress port, where the first data unit sequence stream includes at least one first data unit; determining, according to a preconfigured mapping relationship between at least one logical ingress port and at least one logical egress port, a first logical egress port corresponding to the first logical ingress port, where the at least one logical ingress port includes the first logical ingress port; adjusting a quantity of idle units in the first data unit sequence stream, so that a rate of an adjusted first data unit sequence stream matches a rate of the first logical egress port; and sending the adjusted first data unit sequence stream by using the first logical egress port.

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Номер записи: 95
06-06-2019 дата публикации

ISOLATION OF FREQUENCY MULTIPLEXED MICROWAVE SIGNALS USING CASCADING MULTI-PATH INTERFEROMETRIC JOSEPHSON ISOLATORS WITH NONOVERLAPPING BANDWIDTHS

Номер: US20190171974A1
Автор: Abdo Baleegh
Принадлежит: INTERNATIONAL BUSINESS MACHINES CORPORATION

A cascading microwave isolator (cascade) includes a set of Josephson devices, each Josephson device in the set having a corresponding operating bandwidth of microwave frequencies. Different operating bandwidths have different corresponding center frequencies. A series coupling is formed between first Josephson device from the set and an nJosephson device from the set. The series coupling causes the first Josephson device to isolate a signal at a first frequency from a frequency multiplexed microwave signal (multiplexed signal) in a first signal flow direction through the series coupling and the nJosephson device to isolate a signal at an nfrequency from the multiplexed signal in the first signal flow direction through the series. 1. A cascading microwave isolator (cascade) comprising:a set of Josephson devices, each Josephson device in the set having a corresponding operating bandwidth of microwave frequencies, wherein different operating bandwidths have different corresponding center frequencies; and{'sup': th', 'th', 'th, 'a series coupling between first Josephson device from the set and an nJosephson device from the set, wherein the series coupling causes the first Josephson device to isolate a signal at a first frequency from a frequency multiplexed microwave signal (multiplexed signal) in a first signal flow direction through the series coupling and the nJosephson device to isolate a signal at an nfrequency from the multiplexed signal in the first signal flow direction through the series.'}2. The cascade of claim 1 , further comprising:{'sup': th', 'th', 'th', 'th', 'th, 'an (n−1)Josephson device from the set in the series coupling, wherein n is greater than 1, wherein the (n−1)Josephson device is included the series coupling between the first Josephson device and the nJosephson device, and wherein the (n−1)Josephson device isolates a signal at an (n−1)frequency from the multiplexed signal in the first signal flow direction.'}3. The cascade of claim 1 ,{'sup': ...

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Номер записи: 96
06-06-2019 дата публикации

SYSTEM AND METHOD FOR HIGH SPEED SATELLITE-BASED FREE-SPACE LASER COMMUNICATIONS USING AUTOMATIC GAIN CONTROL

Номер: US20190173580A1
Автор: Wiswell Eric
Принадлежит:

A high speed satellite-based laser communications system and method for communications between a satellite-based transmitter system and a ground-based receiver over a free space optical link. The satellite-based transmitter system includes an encoder to encode data, a polarization modulator to linearly polarize the encoded data, one or at least two transmitters to transmit the laser beam, and a quarter-wave optical wave plate to circularly polarize the signal to be transmitted. The ground-based receiver includes an automatic gain control to apply AGC to the received data before the polarizations are reversed and the data is decoded. The system enables an increased data throughput and reduces or eliminates the effects of signal fading. 120.-. (canceled)21. A ground-based receiver for receiving a signal transmitted by a satellite-based transmitter subsystem of a satellite-based laser communications system for communication between a satellite and the ground-based receiver using a laser beam over a free-space optical link that uses light propagating in free space for wireless data communications , wherein the received signal has been transmitted as a circularly polarized signal , wherein the ground-based receiver comprises: '(1) an optical amplifier to amplify the received signal to output an automatic gain controlled signal that has two circularly polarized states;', '(a) an optical automatic gain control circuit that processes the received signal that was transmitted by the satellite-based transmitter subsystem using the laser beam to account for signal fading and atmospheric conditions over the free-space optical link, wherein the optical automatic gain control circuit comprises(b) a quarter-wave (λ/4) optical wave plate to convert the automatic gain controlled signal from two circularly polarized states into an optical beam having two linear polarization states, including a first linear polarization state and a second linear polarization state;(c) a polarizing beam ...

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Номер записи: 97
28-05-2020 дата публикации

OPTICAL TRANSMISSION SYSTEM AND APPARATUS AND TRANSMISSION METHOD

Номер: US20200169324A1
Автор: Endo Taketo, Furukawa Hayato, Ojima Hisayuki, SHINOHARA Shota, Suzuki Toshihiro, YANAGIKUIDA Kunihiko
Принадлежит: FUJITSU LIMITED

An optical transmission apparatus includes a detecting circuit configured to detect one or more empty slots in which a data signal is not accommodated in a plurality of slots included in a frame, a frame processing circuit configured to reduce size of the frame by deleting the one or more empty slots from the frame based on a detection result of the one or more empty slots and closing up gaps between remaining slots in the plurality of slots, and an optical modulation processing circuit configured to carry out multi-level modulation of the frame at a bit rate according to size of the frame after reduction. 1. A transmission system comprising:a first optical transmission apparatus configured to transmit a frame including a plurality of slots that each accommodate a data signal; anda second optical transmission apparatus configured to receive the frame, whereinthe first optical transmission apparatus includesa first detecting circuit that detects one or more empty slots in which the data signal is not accommodated in the plurality of slots,a frame processing circuit that reduces size of the frame by deleting the one or more empty slots from the frame based on a detection result of the one or more empty slots and closing up gaps between remaining slots in the plurality of slots, andan optical modulation processing circuit that carries out multi-level modulation of the frame at a bit rate according to size of the frame after reduction, andthe second optical transmission apparatus includesa second detecting circuit that detects positions from which the one or more empty slots have been deleted in the frame, anda restoration processing circuit that returns the size of the frame to size before deletion of the one or more empty slots by inserting the one or more empty slots at the positions from which the one or more empty slots have been deleted in the frame based on a detection result of the positions.2. The transmission system according to claim 1 , whereinthe optical ...

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Номер записи: 98
28-05-2020 дата публикации

Method And Apparatus For Processing Bit Block Stream, Method And Apparatus For Rate Matching Of Bit Block Stream, And Method And Apparatus For Switching Bit Block Stream

Номер: US20200169350A1
Автор: Lehong Niu, Min Zha, Shuai XIAO, Xiaojun Zhang, Xingyao CHEN
Принадлежит: Huawei Technologies Co Ltd

Embodiments of the present invention provide a method for processing a bit block stream, including: obtaining a first to-be-processed bit block stream; and mapping the first to-be-processed bit block stream into at least two slot hit block streams, the at least two slot bit block streams include a first slot bit block stream and a second slot bit block stream, the first slot bit block stream includes a first boundary bit block and a second boundary bit block, the second slot bit block stream includes a third boundary bit block and a fourth boundary bit block, N first hit blocks exist between the first boundary bit block and the second boundary bit block, N first bit blocks exist between the third boundary bit block and the fourth boundary bit block, the first bit block is a non-idle bit block.

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Номер записи: 99
18-09-2014 дата публикации

Apparatus and method for forward error correction over a communication channel

Номер: US20140270780A1
Автор: Arash Farhoodfar, Arun Zarabi, Jean-Michel Caia, Juan-Carlos Calderon
Принадлежит: Cortina Systems Inc

There are various drawbacks by using existing OTN (Optical Transport Network) frames for communication between OTN cards. Such drawbacks might for example include high latency, low robustness, and/or high coding rate. According to embodiments of the present disclosure, systems and methods are provided for modifying an OTN frame (or creating a new frame with data from the OTN frame) prior to transmission by an OTL (Optical channel Transport Lane) in order to address some or all of the foregoing drawbacks. Note that this embodiment can make use of existing hardware (e.g. hardware used for generating the OTN frame, and the OTL used for transmission).

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Номер записи: 100