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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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26-01-2012 дата публикации

Method And An Interconnecting Node For Use In An Access Network

Номер: US20120020668A1

Автор: Elmar Trojer, Per-Erik Eriksson

Принадлежит: Telefonaktiebolaget LM Ericsson AB

The invention relates to an interconnecting node for use in interconnecting a passive optical network (PON) and a copper wire xDSL access network, wherein said interconnecting node comprises an optical network unit (ONU) arranged to be connected to an optical line termination (OLT) over the PON network; and at least one xDSL access device connectable to at least one user end xDSL equipment over the copper wire xDSL access network. The interconnecting node is characterized in thatit further comprises a clocking interconnect between the ONU unit and the at least one xDSL access device arranged to distribute a clock signal obtained from optical network transmissions received in the ONU unit over the PON network to an timing reference input of the at least one xDSL access device. The invention also relates to a further interconnecting node, methods for use in interconnecting nodes, a central office optical network apparatus and an access network.

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Номер записи: 1

23-02-2012 дата публикации

Method and apparatus for implementing trunk optical fiber protection in ethernet passive optical network (EPON)

Номер: US20120045199A1

Автор: Jianxin Lu, Weiping Sun, Yunpeng Xie

Принадлежит: ZTE Corp

The present invention provides a method and apparatus for implementing trunk optical fiber protection in EPON. According to the technical scheme of the present invention, activating an optical module at a master PON port, deactivating an optical module at a standby PON port, configuring a service for the master PON port, and synchronizing static data and dynamic data to the standby PON port; synchronizing and adjusting a value of an MPCP counter at the standby PON port according to a value of an MPCP counter at the master PON port; and carrying out fault detection, transmitting an operating state to the standby PON port when the fault occurs, and performing a master-standby switch of the PON ports. In accordance to the present invention, by means of adjusting the MPCP counter at the standby PON port and further setting a dedicated communication channel, the fast communication between the master and standby PON ports is realized, so that the ONU does not to re-register when performing the master-standby switch for implementing the trunk optical fiber protection process in EPON system, as a consequence, the service restoration time for protection switch is remarkably shortened, the system reliability is enhanced, and the performance of the protection switch is improved.

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Номер записи: 2

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: 3

01-03-2012 дата публикации

Diagnostic Port for Inter-Switch Link Testing in Electrical, Optical and Remote Loopback Modes

Номер: US20120051738A1

Автор: Badrinath Kollu, Balakrishna Wusirika, David Aaron Skirmont, Kyuh Kim, Saumitra Buragohain

Принадлежит: Brocade Communications Systems LLC

A diagnostic testing utility is used to perform single link diagnostics tests including an electrical loopback test, an optical loopback test, a link traffic test, and a link distance measurement test. To perform the diagnostic tests, two ports at each end of a link are identified and then statically configured by a user. The ports will be configured as D_Ports and as such will be isolated from the fabric with no data traffic flowing through them. The ports will then be used to send test frames to perform the diagnostic tests.

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Номер записи: 4

19-04-2012 дата публикации

Method of managing onts in pon and olt for managing the same

Номер: US20120093512A1

Автор: Bo Kil LEE, Yu Sik Na

Принадлежит: Dasan Networks Inc

A method of managing optical network terminals (ONTs) and an optical line terminal (OLT) for managing the ONTs are provided. A method of managing ONTs in an OLT includes receiving ONT type information in management information base (MIB) information of ONTs connected to the OLT from the ONTs; not uploading MIBs of other ONTs having the same type as the ONT when MIB upload data for the other ONTs is present in the OLT, and uploading the MIBs of the other ONTs having the same type as the ONT when the MIB upload data for the other ONTs is not present in the OLT; and driving an interface of the ONT.

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Номер записи: 5

17-05-2012 дата публикации

Method, apparatus, and system for transmitting information in passive optical network

Номер: US20120121258A1

Автор: Jianlin Zhou, Kun Li, Min Ye, Shiyi Cao

Принадлежит: Huawei Technologies Co Ltd

A method, an apparatus, and a system for transmitting information in a passive optical network are provided. The method mainly includes: obtaining OAM information that an RE device needs to report to an OLT device, performing modulation processing, according to the OAM information, on a downlink optical signal sent by the OLT device, and returning the downlink optical signal after the modulation processing to the OLT device; or, obtaining OAM information that an OLT device needs to deliver to an RE device, performing modulation processing, according to the OAM information, on a downlink optical signal sent by the OLT device to the RE device, and sending the downlink optical signal after the modulation processing to the RE device.

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Номер записи: 6

17-05-2012 дата публикации

Synchronous packet switches

Номер: US20120121262A1

Автор: Alberto Bianchi, Antonella Bogoni, Luca Poti, Nicola Andriolli, Pier Giorgio Raponi, Piero Castoldi

Принадлежит: Telefonaktiebolaget LM Ericsson AB

A synchronous packet switch comprises output modules, input modules, optical connections and a switch control unit. The output modules comprise optical receivers each configured to receive optical signals at a different wavelength. The input modules receive electric signals carrying data cells to be routed. Each input module comprises optical transmitters, each configurable to generate an optical signal at a different wavelength, and routing apparatus comprising output ports. Each output module has at least one output port allocated to it. The routing apparatus is configurable to route a received optical signal to a selected output port. The optical connections are arranged to couple output ports to respective output modules. The switch control unit controls routing of the optical signals from the transmitters to the output modules and generates a routing control signal for configuring the routing apparatus to route an optical signal from a transmitter to a selected output port.

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Номер записи: 7

24-05-2012 дата публикации

Method and apparatus for migrating sub-network connection protection (sncp) service

Номер: US20120128353A1

Автор: BIN Li

Принадлежит: ZTE Corp

The present invention discloses a method and an apparatus for migrating a Sub-Network Connection Protection (SNCP) service. The method comprises: receiving a migration request of an SNCP service, wherein the migration request comprises one of: Permanent Connection (PC) to Soft Permanent Connection (SPC) migration, SPC to PC migration; respectively setting cross status control bits of a current operation connection and a correlative connection thereof according to the received migration request, and performing collective migration of the current operation connection and the correlative connection thereof according to the set cross status control bits; respectively modifying the cross status control bits of the current connection and the correlative connection thereof according to the migration result. The consistency of cross management authorities of a working connection and a protection connection of the SNCP service migration can be ensured by the present invention.

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Номер записи: 8

07-06-2012 дата публикации

Network Protection Method and Device

Номер: US20120141117A1

Автор: Zhihong Kang

Принадлежит: ZTE Corp

The invention discloses a network protection method and device, the method comprises: initiating a protection configuration request through a control plane of an automatically switched optical network (ASON); and realizing a protection configuration on each node of the network according to the protection configuration request. A safe and reliable recovery capability; a reliable efficiency guarantee and an effective guarantee of the coordination of the switching and recovery are provided.

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Номер записи: 9

14-06-2012 дата публикации

Method for Time Division Multiplex Service Protection

Номер: US20120148230A1

Автор: Dezhi Zhang, Ruichun Dai

Принадлежит: ZTE Corp

The present application provides a method for time division multiplex service protection. The method includes: on an OLT in a passive optical network, a working uplink port and a protection uplink port are set for a time division multiplex service and a protection group is created for the working uplink port and the protection uplink port; when a service flow protection for the time division multiplex service is triggered, the time division multiplex service flow is switched from the working uplink port to the protection uplink port, therefore realizing the protection for the time division multiplex service flow. The present application provides an uplink channel protection mechanism for important services in an access system, such as the time division multiplex service, which needs no protection switching protocol, and makes the service recovery time stand within 50 ms, thereby realizing fast and nondestructive recovery of the time division multiplex service.

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Номер записи: 10

14-06-2012 дата публикации

Method for soft bandwidth limiting in dynamic bandwidth allocation

Номер: US20120148247A1

Автор: Björn Skubic, Elmar Trojer

Принадлежит: Individual

A method of dynamic bandwidth allocation comprising updating a limit value (B max,i,j ) of bandwidth, comprising subtracting from an initial value (N ij ) a value (M ij k ) indicative of previously assigned bandwidth, and adding a predetermined bandwidth value (T ij ).

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Номер записи: 11

28-06-2012 дата публикации

Method and apparatus for path computation element and routing controller cooperation

Номер: US20120163390A1

Автор: Annikki Welin, Filippo Cugini, Francesco Paolucci, Giulio Bottari, Paola Iovanna, Piero Castoldi

Принадлежит: Individual

A system, method, and node for a Routing Controller (RC) to obtain from a Path Computation Element (PCE), network resource path metrics across a plurality of domains in a communication network in which each domain includes a plurality of Border Nodes (BNs). The RC sends to the PCE, a first message requesting a first path computation between each pair of BNs. The first message contains a maximum metric-value that a path computation must not exceed for a Path Computation Client (PCC) to consider the path computation acceptable. The RC then sends a second message requesting the PCE to compute a subsequent path computation for each BN pair for which the first path computation did not exceed the maximum metric-value. The second message contains a minimum metric-value that a path metric must exceed for the PCC to consider the path metric acceptable. The RC then receives the computed subsequent path computation.

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Номер записи: 12

12-07-2012 дата публикации

Method and apparatus for automatic discovery in optical transport networks

Номер: US20120177364A1

Автор: Dieter Beller

Принадлежит: Individual

In order to improve the link adjacency discovery in an Optical Transport Network, a method and related network nodes are provided. A first network node ( 21 ) has a first discovery agent ( 216 ) and a second network node ( 22 ) has a second discovery agent ( 226 ). A discovery message ( 210 ) is transmitted from a first interface of the first network node ( 21 ) over one or more subsequent network links ( 25, 26, 27 ) to a second interface of the second network node ( 22 ). The discovery message ( 210 ) contains information indicative of an discovery agent identifier associated with the first discovery agent ( 216 ) and of a termination connection point identifier associated with the first interface. In order to transmit the discovery message ( 210 ), the first interface is configured to perform a tandem connection source function ( 217 ) using a reserved field in an overhead portion of signal frames to be transmitted. The second interface is configured to perform a Tandem Connection Monitoring function ( 227 ) on the same reserved field of received signal frames. The discovery message is sent using a Trail Trace Identifier (TT!) byte available in the reserved field.

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Номер записи: 13

19-07-2012 дата публикации

Optical packet switching device

Номер: US20120183293A1

Автор: Thierry Zami

Принадлежит: Individual

An optical packet switching device ( 20 ) comprises an input section ( 9 ) able to receive an optical signal comprising data packets ( 60 ) carried by wavelength channels, a transit section ( 30 ) comprising optical paths ( 31 ) to ensure the transparent transit of the respective wavelength channels, several selector elements ( 34 ) which can be switched in packet mode to selectively block or allow an individual data packet to pass through, and a control unit able to receive signalling information about the data packets received in the input section and to control a selector element corresponding to the wavelength channel to block or allow said data packets to pass, said control unit maintaining the selector element ( 34 ) in a blocking state during the time windows in which no data packets are received on said wavelength channel.

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Номер записи: 14

02-08-2012 дата публикации

Method and system for dispatching scheduling uplink messages based on gigabit-capable passive optical network (gpon)

Номер: US20120195596A1

Автор: Donghu Yang

Принадлежит: ZTE Corp

The present invention discloses a method and a system for scheduling an uplink message based on a Gigabit-capable Passive Optical Network (GPON). The method includes the following steps of: configuring a private managed entity for an 802.1p entity, and defining a mapping relationship between a priority queue and a priority of an uplink message in the private managed entity (S 100 ); the 802.1p entity scheduling an uplink message from an optical network unit, mapping the uplink message to a corresponding GEM PORT, and creating a corresponding priority queue according to the mapping relationship between the priority queue and the priority of the uplink message defined in the private managed entity (S 101 ). In the present invention, the uplink messages mapped to the GEM PORTs in the GPON system can be flexibly scheduled under the N:M bridge-mapping service model of the GPON system, and it is a beneficial extension to the existing mode for scheduling an uplink message based on the GPON system.

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Номер записи: 15

20-09-2012 дата публикации

Method for transmitting data and gigabit-capable passive optical network system

Номер: US20120237216A1

Автор: Dan Geng, Weiliang Zhang

Принадлежит: ZTE Corp

The present invention discloses a method for transmitting data and a gigabit-capable passive optical network system, which method comprises: a transmitter carrying indication information in an uplink or a downlink frame transmitted to a receiver for enabling the receiver to discard information which does not need to be processed by the receiver in the uplink or downlink frame according to the indication information. The data type transmitted by GPON systems is expanded and the idle bandwidth is effectively handled by the present invention.

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Номер записи: 16

20-09-2012 дата публикации

Passive optical network

Номер: US20120237220A1

Автор: Ernesto Ciaramella, Fabio Cavaliere, Marco Presi

Принадлежит: Telefonaktiebolaget LM Ericsson AB

A distribution node of a passive optical network (PON) comprises a first port for receiving a first optical continuous envelope modulated downstream data signal at a first wavelength (λ C ) from a first optical line termination unit (OLT 1 ) and a second port for receiving a second optical continuous envelope modulated downstream data signal at a second wavelength (λ L ) from a second optical line termination unit (OLT 2 ). A first converter (FBG- 1 ) performs continuous envelope modulation-to-intensity modulation conversion of the first optical downstream data signal and forwards the converted first optical downstream data signal (λ C ) to the first group of optical network units (ONU 1 . . . N ). A second converter (FBG- 2 ) performs continuous envelope modulation-to-intensity modulation conversion of the second optical downstream data signal and forwards the converted second optical downstream data signal (λ L ) to the second group of optical network units (ONU N+1 . . . 2N ). The distribution node forwards a seed signal at the first wavelength (λ C ) to the second group of optical network units (ONU N+1 . . . 2N ) and forwards a seed signal at the second wavelength (λ L ) to the first group of optical network units (ONU 1 . . . N ).

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Номер записи: 17

27-09-2012 дата публикации

Distributing Wavelength Compatible with Signaling Protocols

Номер: US20120243870A1

Автор: Greg BERNSTEIN, Young Lee

Принадлежит: FutureWei Technologies Inc

An apparatus, comprising a first node configured to communicate with a second node to generate a wavelength assignment, wherein the first node is configured to send a wavelength availability information to the second node. Included is a network component comprising at least one processor configured to implement a method, comprising receiving a wavelength availability information, and updating the wavelength availability information using a local wavelength availability information. Also included is a method, comprising acquiring a local wavelength assignment information, calculating a local wavelength availability information, and transmitting the local wavelength availability information to a subsequent network element on a lightpath.

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Номер записи: 18

11-10-2012 дата публикации

Dynamic communication bandwidth allocation method, computer-readable medium storing dynamic communication bandwidth allocation program, semiconductor chip, and pon system

Номер: US20120257894A1

Автор: Masahiro Sarashina, Satoshi Furusawa

Принадлежит: OF Networks Co Ltd, Oki Electric Industry Co Ltd

The present invention provides a station-side terminal device including a control signals reading/generating section that receives a requested bandwidth which the subscriber-side terminal devices require for the communication, from each of the subscriber-side terminal devices, and an uplink band allocating section including a first calculation section that allocates a usable communication bandwidth to each of the subscriber-side terminal devices based on a ratio of a service level parameter predetermined for each of the subscriber-side terminal devices, and a second calculation section that obtains an updated usable communication bandwidth updated by subtracting a sum of the allocated bandwidths from the usable communication bandwidth, and obtains an updated requested bandwidth updated by subtracting the allocated bandwidth from the requested bandwidth, to allocate the updated usable communication bandwidth to each of the subscriber-side terminal devices based on a ratio of the updated requested bandwidth.

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Номер записи: 19

01-11-2012 дата публикации

Power Saving Method, System and Optical Network Unit in Passive Optical Network

Номер: US20120275790A1

Автор: Dan Geng, Weiliang Zhang

Принадлежит: ZTE Corp

A power saving method in a passive optical network, including: when receiving an upstream burst timeslot allocated by the Optical Line Terminal (OLT) after a power supply of the Optical Network Unit (ONU) is turned off, the ONU dividing the upstream burst timeslot into one or more upstream burst timeslots; and the ONU turning on own laser in the upstream burst timeslot belonging to the ONU, and after sending one or more emergent Physical Layer Operations, Administration and Maintenance (PLOAM) messages to OLT in each upstream burst timeslot, promptly turning off the own laser. A power saving system in a passive optical network and an optical network unit is provided. The invention can decrease the power supply volume of an electric supply installation in a power-off ONU and reduce the cost of the electric supply installation.

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Номер записи: 20

15-11-2012 дата публикации

Intelligent splitter monitor

Номер: US20120288273A1

Автор: Jorg Hehmann, Joseph L. Smith, Michael Straub, Wolfgang W. Pöhlmann

Принадлежит: Alcatel Lucent USA Inc

One aspect provides an optical communication system. The system includes an optical combiner, an optical tap, and a controller. The optical combiner is configured to receive a first optical signal at a first port of a plurality of ports. The optical tap is associated with the first port and is configured to divert a portion of the first optical signal. The controller is configured to monitor the diverted portion and to create an ID message including an identification datum associated with the port in the event that the diverted optical signal is detected.

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Номер записи: 21

29-11-2012 дата публикации

Optical packet switching system

Номер: US20120301139A1

Автор: Shota Mori

Принадлежит: Fujitsu Telecom Networks Ltd

An optical packet switching system includes an optical packet generator for generating an optical packet signal, an optical packet switching unit, provided with an optical switch, for switching the route of an inputted optical packet signal by controlling on/off of the optical switch, and an optical signal-to-noise ratio measuring unit for measuring the optical signal-to-noise ratio of the optical packet signal outputted from the optical packet switching unit. When switching the route of the optical packet signal, the optical packet switching unit outputs an optical packet signal with optical noise by keeping the optical switch on longer than the time width of the packet signal. The optical signal-to-noise ratio measuring unit measures the optical signal power and the optical noise power, respectively, in the optical packet signal with optical noise and measures the optical signal-to-noise ratio by calculating the ratio between the optical signal power and the optical noise power.

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Номер записи: 22

06-12-2012 дата публикации

Optical line terminal, bandwidth control method and optical network system

Номер: US20120308228A1

Автор: Shota TAKAGI, Takahiro Tanaka, Tohru Kazawa

Принадлежит: HITACHI LTD

An example is a bandwidth control method employed in an optical line terminal including: determining a first time point at which a first optical network unit starts the processing of transitioning between the states in a case where the first optical network unit is to be transitioned between the states; transmitting a state control signal containing the first time point to the first optical network unit in order to control the first optical network unit to start the processing of transitioning between the states; and stopping allocating a bandwidth used to transmit a signal to the optical line terminal to a second optical network unit during a period from the first time point until it is determined that the first optical network unit has finished the processing of transitioning between the states.

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Номер записи: 23

13-12-2012 дата публикации

Cell phone/internet communication system for rf isolated areas

Номер: US20120315035A1

Автор: James N. Stewart

Принадлежит: Fiber Span Inc

A communication system for providing downlink and uplink communication between Service Providers, and users located in RF remotely located isolated areas, includes the sequential series connection of Service Provider signal sectors to Radio Interface Modules (RIM's), Service Combiner Units (SCU's), Fiber Transceiver Units (FTU's), Optical Multiplexer Units (OMU's), and Remote Fiber Nodes (RFN's), with only the RFN's being located in the RF isolated areas.

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Номер записи: 24

17-01-2013 дата публикации

Fibre channel switching system

Номер: US20130016734A1

Автор: Stuart B. Berman

Принадлежит: Emulex Design and Manufacturing Corp

The Fibre Channel standard was created by the American National Standard for Information Systems (ANSI) X3T11 task group to define a serial I/O channel for interconnecting a number of heterogeneous peripheral devices to computer systems as well as interconnecting the computer systems themselves through optical fiber and copper media at gigabit speeds (i.e., one billion bits per second). Multiple protocols such as SCSI (Small Computer Serial Interface), IP (Internet Protocol), HIPPI, ATM (Asynchronous Transfer Mode) among others can concurrently utilize the same media when mapped over Fibre Channel. A Fibre Channel Fabric is an entity which transmits Fibre Channel frames between connected Node Ports. The Fibre Channel fabric routes the frames based on the destination address as well as other information embedded in the Fibre Channel frame header. Node Ports are attached to the Fibre Channel Fabric through links.

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Номер записи: 25

21-02-2013 дата публикации

Method and system for upstream bandwidth allocation in a passive optical network

Номер: US20130045011A1

Автор: Dan Geng, Weiliang Zhang

Принадлежит: ZTE Corp

A method for upstream bandwidth allocation in a passive optical network is provided by the disclosure. The method includes the following steps: an Optical Line Terminal (OLT) allocates an upstream bandwidth for an Optical Network Unit (ONU) through an upstream bandwidth mapping (US BWmap) domain, wherein the total length B of payloads transmitted by consecutive Transmission Containers (T-CONTs) allocated for the ONU is: the product of the positive integer n and the data byte length L contained in a code word when the ONU uses Forward Error Correction (FEC) encoding, minus the byte length R of the contents protected by FEC, except the payloads, in an upstream burst slot transmitted by the ONU, i.e. B=L×n−R bytes ( 401 ); and the ONU encapsulates the upstream data according to the size of the T-CONT total bandwidth allocated by the OLT and transmits it to the OLT ( 402 ). A system for upstream bandwidth allocation in a passive optical network is also provided by the disclosure. Application of the disclosure reduces the complexity of processing FEC-encoded data by the ONU and the OLT, and improves the encoding efficiency of the ONU and the decoding efficiency of the OLT.

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Номер записи: 26

07-03-2013 дата публикации

Data Processing of an Optical Network Element

Номер: US20130058651A1

Автор: Harald Rohde, Karl Kloppe, Thomas Treyer

Принадлежит: NOKIA SIEMENS NETWORKS OY

A method for data processing of an optical network element is provided, wherein a configuration information is received at the optical network element and a light signal is adjusted to a wavelength or wavelength range indicated by said configuration information; wherein an incoming optical signal is demodulated via the light signal and mixed as an electrical demodulated signal with a signal of an oscillator; wherein the signal of the oscillator is tuned to improve a reception of the incoming signal at the optical network element; and wherein the light signal is used for upstream modulation to provide a modulated optical upstream signal. Furthermore, an according device and a communication system are suggested including at least one such device.

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Номер записи: 27

07-03-2013 дата публикации

Gigabit-Capable Passive Optical Network (GPON) system and Point-to-Point Protocol over Ethernet (PPPOE) configuration method implemented thereby

Номер: US20130058654A1

Автор: Hongjian Guo

Принадлежит: ZTE Corp

The disclosure discloses a Point-to-Point Protocol over Ethernet (PPPOE) configuration method for a Gigabit-Capable Passive Optical Network (GPON) system. The method comprises: an Optical Line Terminal (OLT) instructing an Optical Network Unit (ONU) to create or delete a PPPoE management object instance and associate the PPPoE management object instance with an IP host config data management object instance; and the ONU creating the PPPoE management object instance according to the creation instruction from the OLT, and turning on a PPPoE function switch in the IP host config data management object instance; or the ONU deleting the PPPoE management object instance according to the deletion instruction from the OLT, and turning of the PPPoE function switch in the IP host config data management object instance. The disclosure also discloses a GPON system. With the disclosure, the problem that the existing GPON system cannot support accessing in a manner of PPPoE dial-up is solved, and the PPPoE scenario requirements are met.

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Номер записи: 28

14-03-2013 дата публикации

Ingress-mitigated cable communication systems and methods having increased upstream capacity for supporting voice and/or data services

Номер: US20130064549A1

Автор: Ronald Totten, Steven Nielsen, Travis Halky

Принадлежит: CertusView Techonologies LLC

Cable communication systems and methods to provide voice and/or data services to subscriber premises in one or more neighborhood nodes via an ingress-mitigated cable plant that conveys upstream information over an upstream path bandwidth. One or more upstream radio frequency (RF) signals have a carrier frequency of between approximately 5 MHz and 19.6 MHz and are modulated using quadrature amplitude modulation (QAM) with voice and/or data information constituting at least some of the upstream information. An example RF signal defines a channel having an average channel power, and a highest value for an average noise power between 5 MHz and 19.6 MHz in the upstream path bandwidth of a given neighborhood node, as measured over at least a 24 hour period, is at least 25 decibels (dB) below the average channel power and/or less than 20 decibels (dB) above a noise floor associated with the neighborhood node.

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Номер записи: 29

21-03-2013 дата публикации

Apparatus and method for managing dynamic bandwidth allocation to support low-power mode in passive optical network (pon)

Номер: US20130071111A1

Автор: Dong Soo Lee, Geun Yong Kim, Hark Yoo, Mun Seob LEE, Sung Chang Kim, Young Suk Lee, Young Sun Kim

Принадлежит: Electronics and Telecommunications Research Institute ETRI

An apparatus and method for managing a dynamic bandwidth allocation to support a low-power mode, in a passive optical network (PON) are provided. The apparatus may include a power saving mode managing unit to manage a power saving mode of at least one optical network unit (ONU), a bandwidth allocation parameter storage unit to store a bandwidth allocation parameter used for a power saving mode, and to maintain the stored bandwidth allocation parameter, and a dynamic bandwidth allocating unit to provide bandwidth allocation information to the at least one ONU, when the stored bandwidth allocation parameter is received.

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Номер записи: 30

28-03-2013 дата публикации

RECEIVER, DATA IDENTIFYING AND REPRODUCING APPARATUS, PON SYSTEM, AND DATA IDENTIFYING AND REPRODUCING METHOD

Номер: US20130077971A1

Автор: Suehiro Takeshi

Принадлежит: Mitsubishi Electric Corporation

An OLT that receives a signal in which transmission signals having a plurality of transmission rates are time-division multiplexed, as a received signal, and performs data reproduction by selecting reproduction data to be reproduced, among oversampled signals obtained by oversampling the received signal. The OLT includes a data-signal-information acquisition unit that acquires a transmission rate of a received signal targeted for a process of the data reproduction, a sampling frequency control unit that determines a sampling frequency to be used for the oversampling based on the transmission rate, and a sampling-clock generation unit that generates a clock signal having the sampling frequency determined by the sampling-frequency control unit, and performs the oversampling based on the clock signal. 1. A receiver that receives time-division multiplexed transmission signals having a plurality of transmission rates as a received signal , and performs data identification and reproduction by selecting reproduction data to be reproduced , among oversampled signals obtained by oversampling the received signal , whereinthe receiver comprises:a transmission-rate acquisition unit that acquires a transmission rate of a received signal targeted for a process of the data identification and reproduction;a sampling-frequency control unit that determines a sampling frequency to be used for the oversampling based on the transmission rate; anda sampling-clock generation unit that generates a clock signal having the sampling frequency determined by the sampling-frequency control unit, andperforms the oversampling based on the clock signal.2. The receiver according to claim 1 , whereinthe transmission-rate acquisition unit acquires a transmission rate for each allocated cycle in a received signal in which burst signals having the plurality of transmission rates are time-division multiplexed, andthe sampling-frequency control unit determines a sampling frequency of each burst signal for ...

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Номер записи: 31

04-04-2013 дата публикации

Access Node For A Communications Network

Номер: US20130083673A1

Автор: Hungkei K. Chow

Принадлежит: Alcatel Lucent USA Inc

An access node such as an OLT or DSLAM for use in a communications network. The access node performs a plurality of functions using in a number of function modules, each divided into one or more sub-modules. The status of the sub-modules is controlled by a controlled by a controller that reviews load statistics and other inputs and determines whether the configuration of the function module should be changed. If so, individual sub-modules are powered down, clock-gated, or returned to operational status. A traffic dispatcher positioned before each function module distributes the data traffic to available sub-modules for processing, after which it is aggregated by a traffic aggregator and passed on to the next stage. A number of circuit boards may be used, each containing only one or two function modules. The boards are connected by short, high-speed serial lines, which may have multiple links whose status may also be controlled.

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Номер записи: 32

11-04-2013 дата публикации

Cable communication systems and methods employing tdma/atdma qam upstream channels below 20 mhz for increased upstream capacity to support voice and/or data services

Номер: US20130088993A1

Автор: Ronald Totten, Steven Nielsen, Travis Halky

Принадлежит: CertusView Techonologies LLC

Cable communication systems and methods to provide voice and/or data services to subscriber premises via a cable plant that conveys upstream information over an upstream path bandwidth, and a cable modem system including one or more demodulation tuners to receive and demodulate one or more upstream radio frequency (RF) signals. An RF signal includes an encoded carrier wave having a carrier frequency of between 5 MHz and 19.6 MHz that is modulated using a Time Division Multiple Access (TDMA) protocol or an Advanced Time Division Multiple Access (ATDMA) protocol and quadrature amplitude modulation (QAM) with voice and/or data information constituting at least some of the upstream information. A modulation order of the QAM for the first upstream RF signal is at least 32, and at least one demodulation tuner of the cable modem system is configured to receive and demodulate the first upstream RF signal.

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Номер записи: 33

11-04-2013 дата публикации

METHOD AND ARRANGEMENTS FOR PROTECTION IN AN OPTICAL NETWORK

Номер: US20130089316A1

Автор: Hood David, Trojer Elmar

Принадлежит: Telefonaktiebolaget L M Ericsson(publ)

Method and arrangement for protecting optical network systems, the arrangement () is based on an optical electrical optical GPON repeater structure. The repeater structure contains two optical modules—a regular ONU transceiver module and a reset-less OLT transceiver module which are working back-to-back. For management purposes, an ONU MAC module comprised in the repeater structure is intercepting the electrical signals from the ONU transceiver. The arrangement comprising the two repeater structures can be used to relay data between two passive optical network (PON) systems thereby opening a way to implement dual homing via the PON domain. Moreover, the arrangement is configured to enabling switch-over of functionality from one PON to the other PON at a communication failure in the former PON. 1. An arrangement for protecting a first and a second optical network system , the systems comprising a first and a second optical line termination device , OLT , respectively , the arrangement comprisesa first and a second OLT transceiver module adapted to be connected to the first and the second optical network system, respectively, wherein the OLT transceiver modules are connected to a first and a second optical network unit media access controller, ONU MAC, module, respectively,a first and a second ONU transceiver module adapted to be connected to the first and the second OLT, respectively, wherein the ONU transceiver modules are connected to the first and the second ONU MAC module, respectively,the first OLT transceiver module is connected to the second ONU transceiver module and the second ONU MAC module,the second OLT transceiver module is connected to the first ONU transceiver module and the first ONU MAC module; andthe first ONU MAC module is connected to the second ONU MAC module,the arrangement providing bidirectional paths of communication between the first OLT and the second OLT, wherein the bidirectional paths of communication are arranged to relay data between ...

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Номер записи: 34

11-04-2013 дата публикации

Methods, Systems, and Computer-Readable Media for Providing Notification of a Power Failure

Номер: US20130089318A1

Автор: Glenn Mark Mahony, Mounire El Houmaidi

Принадлежит: AT&T INTELLECTUAL PROPERTY I LP

Methods, systems, and computer-readable media provide for notifying an optical line termination (OLT) of a power failure. According to embodiments, a method for notifying an OLT of a power failure is provided. According to the method, a notification of a power failure at an optical network termination (ONT) is received. In response to receiving the notification, power is retrieved from a dedicated power storage unit dedicated to providing power for the transmission of a dying gasp alarm. The dying gasp alarm is transmitted to the OLT utilizing at least a portion of the power from the dedicated power storage unit. The dying gasp alarm notifies the OLT of the power failure.

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Номер записи: 35

18-04-2013 дата публикации

Iterative mapping methods for ingress mitigation in cable communication systems

Номер: US20130094369A1

Автор: Ronald Totten, Steven Nielsen, Travis Halky

Принадлежит: CertusView Techonologies LLC

Methods for reducing ingress in a neighborhood node of a cable communication system. The node includes a hardline cable plant and multiple subscriber service drops to convey upstream information from multiple subscriber premises over an upstream path bandwidth. A mobile broadcast apparatus equipped with a transmitter is directed along a drive path proximate to the hardline plant, and a test signal having a frequency falling within the upstream path bandwidth is broadcast along the drive path. Respective positions of the broadcast apparatus, and signal amplitudes at the test signal frequency representing test signal ingress in the node due to one or more hardline plant-related and/or subscriber-related faults, are recorded, and a neighborhood node ingress map is generated. Following remediation of one or more faults based on the map, the process is repeated to generate one or more additional iterations of the map to document a progression of ingress mitigation efforts.

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Номер записи: 36

02-05-2013 дата публикации

ELEMENT OF A WAVELENGTH DIVISION MULTIPLEXING OPTICAL NETWORK

Номер: US20130108265A1

Автор: Lemonnier Nicolas, Rainsant Jean-Marc, Zami Thierry

Принадлежит:

A network element () comprises: 110110. A network element ( , ) for a wavelength division multiplexing optical network , said network element comprising:{'b': 1', '101, 'a first optical input section (, ) intended to be connected to a first neighboring network element to receive a first incoming traffic from the first neighboring network element;'}{'b': 2', '102, 'a first optical output section (, ) intended to be connected to said first neighboring network element to transmit a first outgoing traffic to the first neighboring network element;'}{'b': 3', '103', '200, 'a second optical input section (, ) intended to be connected to a second neighboring network element () to receive a second incoming traffic from the second neighboring network element;'}{'b': 4', '104, 'a second optical output section (, ) intended to be connected to said second neighboring network element to transmit a second outgoing traffic to the second neighboring network element;'}{'b': 30', '40', '130', '140, 'claim-text': [{'b': 31', '41', '131', '141, 'a wavelength selective switch (, ; , ) comprising a shared port and a plurality of selectable ports, said switch being configured to selectively allow through a first subset of wavelengths of the optical network between said shared port and a first of said selectable ports, said switch being configured to selectively allow through a second subset of wavelengths of the optical network between said shared port and a second of said selectable ports;'}, {'b': '35', 'a plurality of optical receivers () connected to the shared port for receiving through the first selectable port, optical signals whose wavelengths belong to the first subset, and through the second selectable port, optical signals whose wavelengths belong to the second subset; and'}, {'b': '36', 'a plurality of optical transmitters () connected to the shared port for sending through the first selectable port, optical signals whose wavelengths belong to the first subset, and through the ...

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Номер записи: 37

16-05-2013 дата публикации

SIGNAL ROUTER

Номер: US20130121692A1

Автор: Patel Rakesh

Принадлежит:

Various signal routing systems are disclosed. Some routing systems include a crosspoint switch or switching fabric for coupling input ports to output ports, allowing an input signal received at one of the input ports to be transported to one or more of the output ports. The systems may include aggregation or compression modules to allow multiple input signals to be combined into one or more compressed signals, which may be converted into optical signals for transmission to a communication network. In some embodiments, the communication network may include a packet switched router which extracts some of the input signals from the optical signals and produced corresponding packetized signals that are coupled to output ports Some routing system may include only a packet switched router. Some routing system may be configured to receive compressed or aggregated signals and to decompress or deaggregate such signals to form individual signal as output signals. 1. A signal routing system comprising:a plurality of input ports for receiving a plurality of input signals;a plurality of output ports for transmitting a plurality of output signals;a crosspoint switch for coupling each of the input ports to one or more of the output ports to allow each input signal to be coupled to one or more output ports;an aggregation module for combining a plurality of input signals into a one or more compressed signals, wherein each of the compressed signals corresponds to two or more of the input signals; andan optical aggregation module for combining a plurality of the compressed signals into an optical signals corresponding to a plurality of the inputs signals, wherein the optical aggregation module is coupled to a communication network.2. The signal routing system of further comprising:an optical deaggregation module coupled to the communication network for receiving an optical signal and deaggregating a plurality of compressed signals from the optical signal;a deaggregation module for ...

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Номер записи: 38

11-07-2013 дата публикации

Ethernet Passive Optical Network with Report Threshold Calculations

Номер: US20130177313A1

Автор: Glen Kramer, Mitchell Gordon McGee, Ryan Edgar Hirth

Принадлежит: Broadcom Corp

The present disclosure is directed to a method and apparatus for maintaining sub-queues at an ONU and for maintaining a count of an amount of data stored in each sub-queue or a count of an amount of data associated with elements stored in each sub-queue. The sub-queues represent partitions in a first in, first out (FIFO) queue used by the ONU to buffer packets, or elements that are associated with packets, to be sent upstream. The sub-queues are coupled in series such that the output of a first sub-queue feeds the input of a second sub-queue, the output of the second sub-queue feeds the input of a third sub-queue, etc. Each sub-queue has a defined threshold that sets a maximum amount of packet data it can buffer or the elements in which it buffers can be associated with.

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Номер записи: 39

25-07-2013 дата публикации

Providing digital data services in optical fiber-based distributed radio frequency (rf) communication systems, and related components and methods

Номер: US20130188959A1

Автор: Michael Sauer, William Patrick CUNE, Wolfgang Gottfried Tobias Schweiker

Принадлежит: CORNING OPTICAL COMMUNICATIONS LLC

Optical fiber-based distributed communications systems that provide and support both RF communication services and digital data services are disclosed herein. The RF communication services and digital data services can be distributed over optical fiber to client devices, such as remote antenna units for example. In certain embodiments, digital data services can be distributed over optical fiber separate from optical fiber distributing RF communication services. In other embodiments, digital data services can be distributed over common optical fiber with RF communication services. For example, digital data services can be distributed over common optical fiber with RF communication services at different wavelengths through wavelength-division multiplexing (WDM) and/or at different frequencies through frequency-division multiplexing (FDM). Power distributed in the optical fiber-based distributed communications system to provide power to remote antenna units can also be accessed to provide power to digital data service components.

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Номер записи: 40

08-08-2013 дата публикации

G.709 BASED MULTI-STAGES MULTIPLEXING ROUTING CONTROL METHOD AND GATEWAY NETWORK ELEMENT

Номер: US20130202294A1

Автор: Fu Xihua, Zhang Xinling

Принадлежит: ZTE CORPORATION

A G.709 based multi-stage multiplexing routing control method is provided in the present invention, which includes that: the multi-stage multiplexing capability of the gateway network element is carried in a link state advertisement data packet, and the multi-stage multiplexing capability of the gateway network element is advertised to a routing domain in which the gateway network element is located or a path computation entity through a routing protocol. A gateway network element is also provided in the present invention, the gateway network element is configured to: carry the multi-stage multiplexing capability of the gateway network element in the link state advertisement data packet, and advertise the multi-stage multiplexing capability of the gateway network element to the routing domain in which the gateway network element is located or the path computation entity through the routing protocol. With the above G.709 based multi-stage multiplexing routing control method and gateway network element, advertising the multi-stage multiplexing capability of the gateway network element to other network elements is implemented, thereby solving the problem of interconnection between new devices and old devices. 1. A G.709 based multi-stage multiplexing routing control method , comprising:a gateway network element carrying a multi-stage multiplexing capability of the gateway network element in a link state advertisement data packet, and advertising the multi-stage multiplexing capability of the gateway network element to a routing domain in which the gateway network element is located or a path computation entity through a routing protocol, so as to implement multi-stage multiplexing of an optical transport network through the gateway network element.2. The method according to claim 1 , wherein claim 1 ,the multi-stage multiplexing capability of the gateway network element is the multi-stage multiplexing capability generated by the gateway network element according to ...

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Номер записи: 41

08-08-2013 дата публикации

Optical line terminal (olt) optical module adapted to perform optical unit network (onu) functionality

Номер: US20130202300A1

Автор: Amiad Dvir, Eliezer Weitz

Принадлежит: Broadlight Ltd

An optical line terminal (OTL) operable in a passive optical network (PON) including a plurality of optical network units (ONUs). The OLT comprises an electrical module for generating continuous downstream signal and processing received upstream burst signals according to a communication protocol of the PON; an optical module for transmitting continuous optical signals over a first wavelength and receiving burst optical signals over a second wavelength, wherein the optical module further includes an optical network unit (ONU) traffic processing module being electrically coupled to the optical module and the electrical module, wherein the ONU traffic processing module is configured to emulate one of the ONUs of the PON; and an interface for interfacing between the electrical module and the optical module.

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Номер записи: 42

15-08-2013 дата публикации

BIDIRECTIONAL OPTICAL DATA PACKET SWITCHING INTERCONECTION NETWORK

Номер: US20130209102A1

Автор: Chadha Devi, Chandra Vinod, Sangeetha R. G.

Принадлежит: INDIAN INSTITUTE OF TECHNOLOGY, DELHI

The present disclosure discloses data vortex architecture with bidirectional links in which the packets are routed both in forward as well as in reverse directions through a single node. The disclosed arrangement avoids any packet congestion in the network and improves the BER characteristics. 1. A bidirectional optical packet switching interconnection network , said network comprising:one or more optical switching nodes with bidirectional links, each of which comprises forward input and reverse output optical data packet flow ports and reverse input and forward output optical data packet flow ports;a switching unit operatively coupled to said optical switching nodes to route said optical data packet flow both in forward and reverse direction; andan electronic processing unit operatively coupled to said optical switching nodes and said switching unit to execute the routing of the optical data packets both in forward and reverse directions based on extracted control signals.2. The network as claimed in claim 1 , wherein said switching unit comprises:a plurality of optical switches;one or more couplers; andone or more semiconductor optical amplifiers (SOAs) that execute the routing and compensate for coupling losses.3. The network as claimed in claim 1 , wherein said electronic processing unit comprises:a detection unit that detects the isolated control wavelengths; anda signal extraction unit that controls and process the signals switching based on the extracted wavelength of frame and header information of the data.4. The network as claimed in claim 1 , wherein said bidirectional link comprises two optical fibers connecting nodes to carry the packets both in the forward and in the reverse directions.5. The network as claimed in claim 4 , wherein said optical fibers comprise one cylinder to the adjacent cylinder to reach its destination.6. The network as claimed in claim 1 , wherein said optical data packets are sent through the node only in one direction claim 1 , ...

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Номер записи: 43

22-08-2013 дата публикации

Signaling Control Method and System for Service Establishment Based on G.709

Номер: US20130216222A1

Автор: Fu Xihua, Zhang Xinling

Принадлежит: ZTE CORPORATION

A signaling control method for service establishment based on G.709 is provided in the present invention, including: a control plane obtaining routing information of an end-to-end service to be established, information of a gateway network element passed by end-to-end service routing and a multi stage multiplexing capability selected for the gateway network element, initiating an end-to-end connection establishment process, and sending an end-to-end connection establishment signaling to nodes passed by the end-to-end service routing, wherein, the end-to-end connection establishment signaling contains the multi stage multiplexing capability selected for the gateway network element passed by the end-to-end service routing, and a corresponding multi stage multiplexing capability is configured on the gateway network element. A signaling control system for service establishment based on G.709 is also provided in the present invention. In the method and system, the interconnection between old devices and new devices is better implemented. 1. A method for signaling control for service establishment based on G.709 , comprising:a control plane obtaining routing information of an end-to-end service to be established, information of a gateway network element passed by end-to-end service routing and a multi stage multiplexing capability selected for the gateway network element, initiating an end-to-end connection establishment process, and sending an end-to-end connection establishment signaling to nodes passed by the end-to-end service routing, wherein, the end-to-end connection establishment signaling contains the multi stage multiplexing capability selected for the gateway network element passed by the end-to-end service routing, and the gateway network element performs configuration according to a corresponding multi stage multiplexing capability.2. The method according to claim 1 , wherein claim 1 ,the end-to-end connection establishment signaling further carries the ...

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Номер записи: 44

05-09-2013 дата публикации

Passive Optical Network Digital Subscriber Line Convergence Architecture

Номер: US20130230324A1

Автор: Sanjay Gupta

Принадлежит: FutureWei Technologies Inc

A method of communicating using an optical line terminal (OLT), the method comprising acquiring encapsulated data by a digital subscriber line (DSL) physical media specific transmission convergence (PMS-TC) sublayer from a protocol specific transmission convergence (TPS-TC) sublayer, and framing the encapsulated data into a frame by the PMS-TC sublayer for transmission to a corresponding PMS-TC sublayer in a customer premises equipment (CPE).

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Номер записи: 45

05-09-2013 дата публикации

Multifunction Portable Electronic Device and Mobile Phone with Touch Screen, Internet Connectivity, and Intelligent Voice Recognition Assistant

Номер: US20130231160A1

Автор: Raman Kaliputnam Rao, Sanjay Kaliputnam Rao, Sunil Kaliputnam Rao

Принадлежит: Individual

A multifunction portable electronic device, mobile device, or smart phone may have a touch screen, cellular radio, microphone, speakers, video, camera, voicemail, website, and Internet connectivity. The device records spoken audio, processes the audio, transcribes the audio into text, and displays the text on the screen. The spoken audio may be used for composition of emails or documents. The mobile device may accept voice commands for actions including calling, dialing a number, or accessing an Internet site. The device may use local or server-based voice recognition software. Voice patterns may be stored in a database specific to an individual. Voice may be used to control functions on the device, a server, Internet site, or an intelligent television. The mobile device may communicate using an inside line path such as a Bluetooth, Ethernet, USB, WiFi or 802.11x or a cellular, GSM, CDMA, LTE, GPS, or other outside line path.

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Номер записи: 46

12-09-2013 дата публикации

Communication apparatus

Номер: US20130236170A1

Автор: Akihiro Tsuji, Takashi Nishitani

Принадлежит: Mitsubishi Electric Corp

The present invention provides a communication apparatus on a subscriber side that, in a point to multi-point communication system, transmits upstream data transmitted from a lower-level device to a station-side device based on a data transmission start time and a transmission duration time notified from the station-side device. The communication apparatus includes a logical-link control unit that determines number of links to be used, which is number of logical links to be used for an upstream data transmission in a next bandwidth update cycle, based on an accumulated data amount in an upstream buffer unit that accumulates upstream data to be transmitted to the station-side device.

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Номер записи: 47

12-09-2013 дата публикации

Method for Generalized Multi-Protocol Label Switching Routing to Support Wavelength Switched Optical Network Signal Characteristics and Network Element Compatibility Constraints

Номер: US20130236174A1

Автор: Bernstein Greg, Lee Young

Принадлежит: Futurewei Technologies, Inc.

An apparatus comprising a network element (NE) configured to support routing-associated signal compatibility constraint information that is associated with the NE using Generalized Multi-Protocol Label Switching (GMPLS) and an open shortest path first (OSPF) routing protocol, wherein the signal compatibility constraint information comprises a modulation type list, a Forward Error Correction (FEC) type list, a bit rate range list, and an acceptable client signal list, and wherein the signal compatibility constraint information is associated with a resource block (RB) pool for a plurality of NEs. Also disclosed is a network component comprising a transmitter unit configured to transmit signal compatibility constraints via GMPLS OSPF routing, wherein the signal compatibility constraints comprise a modulation type list, a FEC type list, a bit rate range list, and an acceptable client signal list. 1. A method comprising:receiving an Open Shortest Path First (OSPF) link-state message from an optical node that describes the node,wherein the optical node is a wavelength switched optical network (WSON) network element, andwherein the message comprises resource block information including compatibility constraints of the node.2. The method of claim 1 , wherein the resource block information comprises an input client signal list containing a list of input client signal types acceptable to the node.3. The method of claim 2 , wherein the acceptable input client signal list comprises a list of General Protocol Identifiers (GPIDs).4. The method of claim 3 , wherein the acceptable input client signal list comprises:a number of GPIDs field that indicates a number of GPIDs included in the acceptable input client signal list; andat least one GPID field that comprises the GPIDS.5. The method of claim 1 , wherein the resource block information comprises a processing capabilities list that contains a list of resource processing capabilities of the node.6. The method of claim 5 , wherein ...

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Номер записи: 48

12-09-2013 дата публикации

Reachability Matrices Spanning Multiple Domains in an Optical Network

Номер: US20130236176A1

Автор: Chiu Angela Lan, Doverspike Robert, Gerhardstein Monica, Guo Yici, LI GUANGZHI, Wang Dongmei, Xu Dahai

Принадлежит: AT&T Intellectual Property I, LP

A method of providing routes through heterogeneous subsystems in an optical network is disclosed, which includes generating, using a processing device, a reachability matrix based on subnetwork information; and generating, using the processing device, a topology associated with the optical network using the reachability matrix. The method also includes determining, using the processing device, a shortest path through the optical network using the reachability matrix and a cost model graph; and displaying, using a graphical user interface, subsystems associated with the shortest path, regeneration locations associated with the shortest path, wavelengths associated with the shortest path, the topology, and the shortest path. Corresponding apparatus and computer-readable storage media are also disclosed. 1. A method of providing routes through heterogeneous subsystems in an optical network , the method comprising:generating, using a processing device, a reachability matrix based on subnetwork information associated with the heterogeneous subsystems, the reachability matrix comprising a list of reachable paths in the subnetwork information, the heterogeneous subsystems being associated with different vendors;generating, using the processing device, a topology associated with the optical network using the reachability matrix;determining, using the processing device, a shortest path through the optical network using the reachability matrix and a cost model graph; anddisplaying, using a graphical user interface, heterogeneous subsystems associated with the shortest path, regeneration locations associated with the shortest path, wavelengths associated with the shortest path, the topology, and the shortest path.2. The method of claim 1 , wherein generating the reachability matrix further comprises:obtaining network topology information G(V,E) representing the optical network, V representing nodes associated with the optical network, E representing links associated with the ...

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Номер записи: 49

19-09-2013 дата публикации

Fiber protection and power save with security

Номер: US20130243418A1

Автор: Barak Perlman, Elan Rohekar, Raziel Gabe, Zachi HARAMATY

Принадлежит: PMC Sierra Israel Ltd

A system and method for Passive Optical Networks (PON) providing integration (cross-correlation) of powersave and fiber protection, optionally with encryption, facilitating the successful operation and/or benefits that can be gained when operating a PON system with these features. A major problem with power save is the detection, since both the OLT and the ONUs rely on a valid signal in order to detect fiber failure. However, the OLT may not detect this for sleeping ONUs, and an ONU in Tx/Rx sleep-mode, may not detect a fiber failure, and may not be aware of the OLTs switchover. In addition to solving the problem of combined fiber protection and power savings, a solution is also needed for providing security for this combination. A current embodiment is a system and method for Passive Optical Networks (PON) providing integration (cross-correlation) of powersave and fiber protection, optionally with encryption.

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Номер записи: 50

19-09-2013 дата публикации

Method and Apparatus for Link Sharing Among Multiple EPONS

Номер: US20130243435A1

Автор: BOYD Edward W., HIRTH Ryan E.

Принадлежит: BROADCOM CORPORATION

One embodiment of the present invention provides an optical line terminal (OLT) in an Ethernet passive optical network (EPON). The OLT includes a number of bi-directional optical transceivers. At least one bi-directional optical transceiver is coupled to an optical network unit (ONU) group that includes a number of ONUs. The OLT further includes a first downstream media access control (MAC) interface configured to provide a first downstream control signal and a splitter configured to split the first downstream control signal to a number of sub-signals. At least one sub-signal is configured to control downstream transmission of a corresponding bi-directional optical transceiver to a corresponding ONU-group. 1. An optical line terminal (OLT) in an Ethernet passive optical network (EPON) , comprising:a plurality of optical transceivers, each optical transceiver from among the plurality of optical transceivers being configured to transmit a downstream signal to a corresponding optical network unit (ONU) group from among a plurality of ONU groups, each ONU group from among the plurality of ONU groups including a plurality of ONUs;a downstream media access control (MAC) interface configured to provide a downstream control signal;a splitter configured to split the downstream control signal into a plurality of sub-signals, a sub-signal from among the plurality of sub-signals controlling transmission of the downstream signal; anda plurality of upstream MAC interfaces configured to arbitrate a plurality of upstream signals transmitted from the plurality of ONUs to the OLT.2. The OLT of claim 2 , wherein the plurality of ONU groups include a first ONU group and a second ONU group claim 2 , and wherein the plurality of upstream signals are transmitted concurrently from the first and second ONU groups to the OLT.3. The OLT of claim 2 , wherein the downstream signal propagates on a first wavelength claim 2 , and wherein the plurality of upstream signals propagate on a second ...

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Номер записи: 51

26-09-2013 дата публикации

Establishing connection across a connection-oriented first telecommunications network in response to a connection request from a second telecommunications network

Номер: US20130251366A1

Автор: Andrew James Barker

Принадлежит: ERICSSON AB

A first Multi Protocol Label Switching (MPLS) Internet Protocol (IP) data network transmits data to a second MPLS IP network via a legacy network, which would not otherwise be able to handle the required user network interface (UNI) protocol by configuring the legacy network and its connection computing apparatus (CCA) so that they emulate an MPLS network. When a firt network element (NE) receives a connection (UNI) request from the MPLS network under a UNI protocol, the UNI request is passed to the CCA, which then sets the required connection across the legacy network via a second network element (NE) to an NE of the second network. Once the connection has been set, the CCA instructs the NE to send a return signal to the requesting network indicating that the connection has been successfully set. Data packets may then be transmitted across the network.

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Номер записи: 52

03-10-2013 дата публикации

Communications network

Номер: US20130259467A1

Автор: Justin Kang

Принадлежит: British Telecommunications plc

A passive optical network is provided which uses existing GPON OAM functionality and standard routing protocol messages to solve the downstream routing problem between an access service provider and one or more other communication provider networks.

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Номер записи: 53

03-10-2013 дата публикации

METHOD AND SYSTEM FOR REDUCING THE RESOURCE UTILIZATION OF SWITCH FABRIC IN A SONET/SDH MULTIPLEXER BY SWITCHING DATA ON A TU LEVEL

Номер: US20130259477A1

Автор: CHAUDHARY Devendra Kumar, DABHOLKAR Prashant Prabhakar

Принадлежит:

The present invention relates to a method and apparatus for reducing the resource utilization of the switching fabric in a SONET/SDH multiplexer by switching data on a TU level instead of byte or column level. 1. A method of switching data on a TU Level in a SONET/SDH network , the method comprising:writing at least one first set of data into a first memory element or page during a first time interval, wherein the memory consists of 8 pages to store the payload data, wherein each page includes 21 location and each location includes one byte;writing at least one second set of data into a second memory element during a second time interval;reading a portion of the first set of data from the first memory element during the second time interval; andreading a portion of the second set of data from the second memory element during the first time interval,wherein the write and read operation is switched at page level by modifying the page structure of the cross connect and controlling the page number based on the to configuration, and wherein the first time interval and second time interval are non-consecutive.212111211. The method of claim 1 , wherein storing and reconfiguring only some of the bytes that form the TUs or TUs in an STM-1 frame claim 1 , wherein the TUs and TUs are byte interleaved in the STM-1 frame of the cross connect fabric.3. The method of claim 1 , wherein the step of writing to the second page while reading from the first page according to the configuration information.4. A system of switching data on a TU Level in a SONET/SDH network claim 1 , the system comprising:an input write bus;a first memory element in electrical communication with the input write bus;a second memory element in electrical communication with the input write bus; anda circuitry configured to writing at least one first set of data into a first memory element or page during a first time interval, wherein the memory consists of 8 pages to store the payload data, wherein each page ...

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Номер записи: 54

10-10-2013 дата публикации

Diagnostic port for inter-switch and node link testing in electrical, optical and remote loopback modes

Номер: US20130266307A1

Автор: Balakrishna Wusirika, Gin Man Cheung, Meenakshi Garg, Raymond Grigsby, Venugopal Tummala

Принадлежит: Brocade Communications Systems LLC

A diagnostic testing utility is used to perform single link diagnostics tests including an electrical loopback test, an optical loopback test, a link traffic test, and a link distance measurement test. To perform the diagnostic tests, two ports at each end of a link are identified and then statically configured by a user. The ports will be configured as D_Ports and as such will be isolated from the fabric with no data traffic flowing through them. This configuration can be static or can be on request or on errors. The ports will then be used to send test frames to perform the diagnostic tests. After completion of requested or on error testing the ports can return to normal operation.

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Номер записи: 55

10-10-2013 дата публикации

Method for routing and spectrum assignment

Номер: US20130266316A1

Автор: Ming Xia, Stefan Dahlfort

Принадлежит: Individual

Methods and apparatus are disclosed for performing a spectrum assignment and route selection algorithm in an optical WDM network. The optical WDM is assigned an optical band of frequencies. In accordance to the present invention, a new spectrum assignment in the optical band always adjoins a spectrum assignment previously allocated. The very first spectrum assignment may be made to start with one end frequency in the optical band. Given a spectrum demand, one or more spectrum assignments are identified and one or more feasible routes are determined. Among the one or more feasible routes, an optimal route may be selected based on a set of pre-defined criteria. The spectrum assignment and route selection algorithm disclosed herein reduces computational complexities and improves spectrum efficiencies.

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Номер записи: 56

07-11-2013 дата публикации

G.709 Based Multi-Level Multiplexing Routing Control Method and Gateway Network Element

Номер: US20130294773A1

Автор: Fu Xihua, Zhang Xinling

Принадлежит: ZTE CORPORATION

A G.709 based multi-stage multiplexing routing control method and a gateway network element. The method comprises: a gateway network element broadcasting multi-stage multiplexing capability of the gateway network element to a routing domain where the gateway network element is located or a path calculation entity through an extended routing protocol, so as to implement multi-stage multiplexing configuration and management of an optical transport network through the gateway network element; the multi-stage multiplexing capability comprises information of multiplexing hierarchy supported by a port of a link connected to the gateway network element and adaptation ability. 1. A G.709-based multi-stage multiplexing routing control method , comprising:a gateway network element broadcasting multi-stage multiplexing capability of the gateway network element to a routing domain where the gateway network element is located or a path calculation entity through an extended routing protocol, to implement multi-stage multiplexing configuration and management of an optical transport network through said gateway network element; said multi-stage multiplexing capability comprising information of multiplexing hierarchy supported by a port of a link connected to said gateway network element and adaptation capability.2. The multi-stage multiplexing routing control method according to claim 1 , wherein claim 1 , the multi-stage multiplexing capability of said gateway network element is generated by the gateway network element by detecting board and port information of gateway network element's node; or claim 1 , said gateway network element receives multi-stage multiplexing capability configured by a management plane.3. The multi-stage multiplexing routing control method according to claim 1 , wherein claim 1 , said routing protocol is Open Shortest Path First-traffic engineering (OSPF-TE) or Intermediate System to Intermediate System-traffic engineering (IS-IS-TE).4. The multi-stage ...

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Номер записи: 57

07-11-2013 дата публикации

Optical Line Terminal, Optical Network Unit and Passive Optical Network System

Номер: US20130294774A1

Автор: Geng Dan, Zhang Dezhi, Zhang Weiliang, ZHU Songlin

Принадлежит: ZTE Corp

The invention discloses are an optical line terminal, an optical network unit, a passive optical network system, an upstream bandwidth allocation method and a rate adaptation method. The OLT comprises: an optical module, a clock and data recovery module, a media access control chip and a control module, wherein, the optical module is configured to receive upstream data sent by ONUs having different transmission rates; the clock and data recovery module is configured to receive the upstream data, recover a clock signal according to the upstream data, and send the upstream data and the clock signal to the media access control chip; the media access control chip is configured to save the upstream data and the clock signal; the control module is configured to, according to the clock signal, acquire an upstream rate of the upstream data, and allocate an upstream bandwidth to the ONU according to the upstream rate.

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Номер записи: 58

07-11-2013 дата публикации

Image networks for mobile communication

Номер: US20130295991A1

Автор: Raman K. Rao, Sunil K. Rao

Принадлежит: Individual

A mobile communication system based on images, enabling communication between a plurality of mobile devices and servers, wherein the images have associated additional properties in the nature of voice, audio, data and other information. The system further enabling the formation of one or more image networks wherein the images are stored, organized, connected and linked to each other by one or more methods inclusive of one to one connection between images, a hierarchical connection between images and or other methods of connection between images to facilitate efficient image based communication between mobile devices, stationary devices and servers based on the mobile device identification, mobile device specific profiles and user specific profiles. The imaged base network system further having the ability to learn and form intelligent association between objects, people and other entities; between images and the associated data relating to both animate-and inanimate entities for intelligent image based communication in a network.

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Номер записи: 59

14-11-2013 дата публикации

System for long reach xdsl over fiber

Номер: US20130302030A1

Автор: Manuel SÁNCHEZ YANGÜELA, Pablo Alberto Yagüe Valentín

Принадлежит: Individual

System for connecting a plurality of digital subscribers to a data network, comprising a local part connected, by an optical fiber link, to a remote part. Said local part comprises a plurality of DSLAM line cards with xDSL over fiber transceiver that, in turn, comprise a plurality of xDSL lines comprising a modified analog front end which comprises an digital-analogue converter to transform a transmitted digital downstream signal into an analogue downstream signal; an oscillator which fixes an oscillation frequency for the xDSL line; a mixer, directly connected to the output to convert the analog downstream signal into the oscillation frequency; and a band pass filter centered at the oscillation frequency which filters the converted analog downstream signal. And in upstream direction: a band pass filter centered at the oscillation frequency which filters an analogue upstream signal; an oscillator which fixes an oscillation frequency for the xDSL line; a mixer, directly connected to the output of the band pass filter to convert the analogue downstream signal into the original frequency; a low pass filter to avoid aliasing; an analogue front end which comprises an analogue-digital converter to transform the converted analogue upstream signal into a digital upstream signal.

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Номер записи: 60

28-11-2013 дата публикации

Method and Apparatus for Extending Multipoint Control Protocols to Mixed Media Access Systems

Номер: US20130315238A1

Автор: Edward Boyd, Glen Kramer, Lowell Lamb, Ryan Hirth

Принадлежит: Broadcom Corp

A method and apparatus for extending multipoint control protocols to mixed media access systems. A medium-to-medium adaptor can be provided in an adaptor node that can interface with an upstream optical line terminal in a PON domain and a downstream device in a non-PON domain. The medium-to-medium adaptor enables an implementation of end-to-end services across multiple quality of service (QoS) domains by passing all traffic with controlled delay and without contention.

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Номер записи: 61

28-11-2013 дата публикации

Method and system for providing a shared demarcation point to monitor network performance

Номер: US20130315579A1

Автор: Glenn A. Wellbrock, Tiejun J. XIA

Принадлежит: VERIZON PATENT AND LICENSING INC

An approach for detecting an error associated with a routing network coupled to a transport network comprising a plurality of optical communication nodes, switching, by an optical communication node, to a troubleshooting channel associated with the transport network using one or more router counterpart cards, and troubleshooting the error using the one or more router counterpart cards.

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Номер записи: 62

12-12-2013 дата публикации

TRANSMISSION APPARATUS AND TRANSMISSION METHOD

Номер: US20130330075A1

Автор: HASEGAWA Kenichi, Ishii Hiroyuki, Kaiga Takashi, Katayanagi Yukio, Kawarai Masashige, SUGAMA Koichi, Ueno Tomohiro, Yanaka Hiromitsu

Принадлежит: FUJITSU LIMITED

A transmission apparatus includes a network-side interface unit configured to receive a signal transmission frame into which a client signal is arranged from each of a working line and a protection line of a network, and extract the client signal from the received signal transmission frame, a client-side interface unit configured to transmit the extracted client signal to a client transmission path by using a generated clock, based on frequency adjustment information of the client signal included in the signal transmission frame, a protection-line-side memory configured to store the frequency adjustment information of the client signal included in the signal transmission frame received from the protection line, and a switch controller configured to control to generate a clock by using the frequency adjustment information of the client signal stored in the protection-line-side memory when the signal transmission frame fails to be received from the working line. 1. A transmission apparatus comprising:a network-side interface unit configured to receive a signal transmission frame into which a client signal is arranged from each of a working line and a protection line of a network, and extract the client signal from the received signal transmission frame;a client-side interface unit configured to transmit the extracted client signal to a client transmission path by using a clock generated by a phase synchronization circuit, based on frequency adjustment information of the client signal included in the signal transmission frame;a protection-line-side memory configured to store the frequency adjustment information of the client signal included in the signal transmission frame received from the protection line; anda switch controller configured to control the phase synchronization circuit so as to generate a clock by using the frequency adjustment information of the client signal stored in the protection-line-side memory when the signal transmission frame fails to be ...

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Номер записи: 63

26-12-2013 дата публикации

Software-Defined Optical Network

Номер: US20130343755A1

Автор: Angelou Maria Ioanna, Cvijetic Milorad, Cvijetic Neda, Ji Philip Nan, Patel Ankitkumar, Wang Ting

Принадлежит: NEC Laboratories America, Inc.

A software-defined (SD) optical network is disclosed. An SD optical line terminal (OLT) includes a global SD controller, one or more SD OLT drivers connected to the global SD controller, and an underlying hardware component connected to each of said one or more SD OLT drivers. An SD optical network unit (ONU) includes a local SD controller, one or more SD optical network unit (ONU) drivers connected to the local SD controller, and an underlying hardware component connected to each of said one or more SD ONU drivers, wherein the local SD controller manages said one or more SD ONU drivers by issuing commands communicated to said one or more SD ONU drivers, and wherein each of said one or more SD ONU drivers implements a required function on the underlying hardware component. Other apparatuses, systems, and methods also are disclosed. 1. A software-defined (SD) optical line terminal (OLT) , comprising:a global software-defined (SD) controller;one or more software-defined (SD) optical line terminal (OLT) drivers connected to the global SD controller; andan underlying hardware component connected to each of said one or more SD OLT drivers,wherein the global SD controller manages said one or more SD OLT drivers by issuing commands communicated to said one or more SD OLT drivers, andwherein each of said one or more SD OLT drivers implements a required function on the underlying hardware component.2. The SD OLT as in claim 1 ,wherein the global SD controller provides a software-defined (SD) interface between a control and data planes.3. The SD OLT as in claim 2 ,wherein the SD interface comprises OpenFlow.4. The SD OLT as in claim 1 ,wherein the global SD controller performs resource scheduling and management tasks for a set of heterogeneous systems.5. The SD OLT as in claim 1 ,wherein the underlying hardware component comprises an optical line terminal (OLT) transmitter.6. The SD OLT as in claim 5 , wherein the optical line terminal transmitter comprises at least one ofan ...

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Номер записи: 64

26-12-2013 дата публикации

METHOD FOR DYNAMIC PACKET-OPTICAL SERVER NETWORK

Номер: US20130343756A1

Автор: Ruckstuhl Hanspeter, Stademann Rainer, Theimer Thomas, Winkelmann Rudolf

Принадлежит: NOKIA SIEMENS NETWORKS OY

A method for reconfiguration of a Label Switched Path(s) (LSP) of a first client of a packet-optical transport network, the packet-optical transport network including a first LSR-user-plane unit, a second LSR user plane unit, and a common control unit, the method comprising: transporting the LSP of the first client directly over a common link to a first network element, the first network element comprising the common control unit, connecting the common link by means of a bypass unit to the first LSR-user-plane unit, wherein the first client exchanges LSP specific control messages with the control unit, and the first client continues to exchange LSP specific control messages with the control unit after the common link with the LSP has been switched over from the first LSR-user-plane unit to the second LSR user plane unit. 277767576. Method according to claim 1 , wherein a label (.) used for a LSP to or from the first client (.) remains unchanged after switching over the link with the LSP from the first LSR user plane unit (.) to the second LSR user plane unit (.).38482. Method according to claim 2 , wherein the packet-optical transport network further includes a packet operation unit (.) configured to translate labels (.) for the packets of the LSP.4. Method according to claim 1 , wherein in{'b': 8', '10', '8', '4, 'the first network element (.) a packet operation unit (.) inserts packets into a packet stream.'}581084. Method according to claim 1 , wherein in the first network element (.) a packet operation unit (.) removes packets from a packet stream.681084. Method according to claim 1 , wherein in the first network element (.) a packet operation unit (.) modifies packets of a packet stream.7. Method according to claim 4 , wherein the packet operation unit processes packets for Operation claim 4 , Administration and Maintenance (OAM) purposes.8. Method according to claim 4 , wherein the packet operation unit processes packets for in-band signalling purposes. The ...

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Номер записи: 65

02-01-2014 дата публикации

Cloud Storage and Processing System for Mobile Devices, Cellular Phones, and Smart Devices

Номер: US20140006540A1

Автор: Raman Kaliputnam Rao, Sanjay Kaliputnam Rao, Sunil Kaliputnam Rao

Принадлежит: IP Holdings Inc

A cloud or network server based storage and processing system for portable electronic devices including mobile devices and cellular telephones is disclosed. The server based data, applications and user interface components may overcome limited local storage and processing on mobile devices. Cloud server data may be accessible from multiple mobile devices or applications. Data acquired from a mobile device's built-in digital camera may be digitized, edited, and processed locally or by network servers. The servers store or provide email, voicemail, music, photos, videos, documents, spreadsheets, books, applications, configuration settings, and send and receive data to multiple network servers or mobile devices. Data may be saved to and downloaded from private cloud intranet servers or public cloud Internet servers. A mobile device may access a network server using a central multichannel multiplexing transmit/receive device or access point. Networked data may be secured. Authentication may include user names and passwords.

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Номер записи: 66

09-01-2014 дата публикации

Cable communication systems and methods employing qam upstream channels below 16.4 mhz for increased aggregate deployed upstream capacity

Номер: US20140010542A1

Автор: Ronald Totten, Steven Nielsen, Travis Halky

Принадлежит: CertusView Techonologies LLC

Cable communication systems and methods to provide voice and/or data services to subscriber premises via a cable plant that conveys upstream information over an upstream path bandwidth via one or more upstream radio frequency (RF) signals. One or more RF signals include an encoded carrier wave having a carrier frequency of between 5 MHz and 16.4 MHz that is modulated using a Time Division Multiple Access (TDMA) protocol or an Advanced time Division Multiple Access (ATDMA) protocol and quadrature amplitude modulation (QAM) with voice and/or data information constituting at least some of the upstream information. An aggregate deployed upstream capacity of the one or more RF signals to convey the upstream information in a portion of the upstream path bandwidth between 5 MHz and 16.4 MHz is at least approximately 12 Megabits per second (Mbits/s).

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Номер записи: 67

09-01-2014 дата публикации

OPTICAL LINE TERMINAL

Номер: US20140010556A1

Автор: Yoshima Satoshi

Принадлежит: Mitsubishi Electric Corporation

To enable optical line terminal to detect input disconnection of optical burst signal accurately in spite of changes of transmission rate of optical-burst signal received from optical network unit, OLT (optical line terminal) includes photo-detector for converting the optical-burst signal received to current signal; preamplifier for converting the current signal to voltage signal; input disconnection detecting circuit for comparing output amplitude of preamplifier with threshold, and for outputting input disconnection signal indicating disconnection of input of the optical-burst signal; and control circuit for controlling conversion gain of preamplifier in a manner that the conversion gain becomes conversion gain corresponding to the transmission rate of the optical-burst signal received, and for controlling input disconnection detecting circuit in a manner that it outputs the input disconnection signal in response to the threshold corresponding to the transmission rate of the optical-burst signal received. 14-. (canceled)5. An optical receiver that receives optical burst signals with different transmission rates from transmission sources via an optical transmission line , the optical receiver comprising:a photo-detector for converting the optical burst signal received to a current signal;a preamplifier circuit for converting the current signal to a voltage signal;an amplitude detecting circuit for detecting the amplitude of the voltage signal undergoing the conversion of the preamplifier circuit;a threshold circuit having a plurality of thresholds which correspond to the transmission rates of the optical burst signals and are set in advance; andan input disconnection detecting circuit including a plurality of comparator circuits for comparing the amplitude detected by the amplitude detecting circuit with each of the plurality of thresholds output from the threshold circuit, and for individually outputting an input disconnection signal indicating disconnection of ...

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Номер записи: 68

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: 69

16-01-2014 дата публикации

Monitoring optical decay in fiber connectivity systems

Номер: US20140016930A1

Автор: Erik Gronvall, Timothy G. Badar, Trevor D. Smith

Принадлежит: ADC Telecommunications Inc

A tracking system includes a tracking arrangement including a processor, memory, and at least a first interface port; and one or more optical modules. Each optical module includes a housing having at least one input port, at least a first output port, and at least a first monitoring port. An optical power splitter arrangement and an optical receiver are disposed within the housing. The splitter arrangement splits optical signals received at the input port onto one or more output lines and one or more monitoring lines. The output lines are routed to the output ports and the monitoring lines are routed to the optical receiver. The optical receiver measures the power of optical signals received from the first monitoring line and provides a measurement signal to the first monitoring port of the housing.

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Номер записи: 70

23-01-2014 дата публикации

ESTABLISHING CONNECTIONS IN A MULTI-RATE OPTICAL NETWORK

Номер: US20140023364A1

Автор: Bpttari Giulio, Castoldi Piero, Cugini Filippo, Iovanna Paola, Sambo Nicola

Принадлежит: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)

An optical transmission network comprises nodes which support a plurality of different wavelength channels and support at least a first bitrate traffic type and the second bitrate traffic type on respective wavelength channels. A connection of the second bitrate traffic type is established on an available wavelength, if the wavelength offers an acceptable quality of transmission using a first quality of transmission calculation. Alternatively, a connection of the second bitrate traffic type is established on a wavelength which is spaced, by a guard band, from wavelengths used for connections of the first bitrate traffic type, if the wavelength offers an acceptable quality of transmission using a second quality of transmission calculation. The second quality of transmission calculation is less stringent than the first quality of transmission calculation, and can ignore the effects of interference due to cross-phase modulation. The guard band is a wavelength spacing at which the interference between a connection of the first bitrate traffic type and a connection of the second bitrate traffic type is less than a predetermined amount. 1. A method of establishing a connection of a second bitrate traffic type in an optical transmission network , the network comprising nodes connected by optical links , wherein the nodes support a plurality of different wavelength channels on the links and support at least a first bitrate traffic type and the second bitrate traffic type on respective wavelength channels , the method comprising , at one of the nodes:receiving first information identifying wavelengths which are available on an upstream path to the node;receiving second information identifying wavelengths which are available on an upstream path to the node and which are spaced, by a guard band, from wavelengths used for connections of the first bitrate traffic type, the guard band being a wavelength spacing at which the interference between a connection of the first bitrate ...

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Номер записи: 71

23-01-2014 дата публикации

DPOE System And Service Auto-Configuration Method And Network Based Thereon

Номер: US20140023366A1

Автор: Chaoqin Zhang, Liquan Yuan, Meiyan Zang

Принадлежит: ZTE Corp

A DPOE system and a service auto-configuration method and network based on that system are provided, wherein, the DPOE system includes an acquisition unit, an analyzing unit and a configuration unit; the service auto-configuration network includes a DPOE system, a back-office management system and an ONU; the service auto-configuration method based on that system includes: the DPOE system acquiring a configuration file from the back-office management system, wherein the configuration file includes configuration information of the ONU and configuration information of an OLT in the DPOE system; the DPOE system analyzing the configuration file and obtaining the configuration information of the ONU and the configuration information of the OLT; configuring the OLT locally and configuring the ONU via a management channel between the OLT and the ONU. Thus the service can be opened without performing further configuration to the OLT individually after the process of the ONU initialization is completed.

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Номер записи: 72

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: 73

23-01-2014 дата публикации

METHOD, SYSTEM AND OPTICAL NETWORK DEVICE FOR SYNCHRONIZING TIME OF A PASSIVE OPTICAL NETWORK

Номер: US20140023369A1

Автор: Zheng Ruobin

Принадлежит: Huawei Technologies Co., Ltd.

The present invention relates to method for synchronizing time, apparatus and system. The method discloses an OLT generates a Passive Optical Network (PON) downstream frame from to an Optical Network Unit (ONU), wherein the PON downstream frame comprises a time synchronization message based on Ethernet protocol, wherein the time synchronization message comprises a time value that is referenced to a PON Media Access Control (MAC) control layer and that indicates the ONU to adjust a time of a clock coupled to the ONU; and send the PON downstream frame. 1. A method for synchronizing time in a Passive Optical Network (PON) , the method comprising:generating a Passive Optical Network (PON) downstream frame from an Optical Line Terminal (OLT) to an Optical Network Unit (ONU), wherein the PON downstream frame comprises a time synchronization message based on Ethernet protocol, wherein the time synchronization message comprises a time value that is referenced to a PON Media Access Control (MAC) control layer and that indicates the ONU to adjust a time of a clock coupled to the ONU;sending the PON downstream frame.2. The method of claim 1 , wherein the PON MAC control layer is Transmission Convergence Adapter Sub-layer.3. The method of claim 1 , wherein the time synchronization message is based on IEEE 1588 protocol.4. The method of claim 1 , wherein the time value is relative to a certain bit in a Physical Control Block downstream (PCBd) field of the PON downstream frame.5. A method for synchronizing time in a Passive Optical Network (PON) claim 1 , the method comprising:receiving a Passive Optical Network (PON) downstream frame from an Optical Line Terminal (OLT) to an Optical Network Unit (ONU), wherein the PON downstream frame comprises a time synchronization message based on Ethernet protocol, wherein the time synchronization message comprises a time value that is referenced to a PON Media Access Control (MAC) control layer and that indicates the ONU to adjust a time of ...

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Номер записи: 74

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: 75

20-02-2014 дата публикации

Optical Network Terminal Management Control Interface-Based Passive Optical Network Security Enhancement

Номер: US20140052991A1

Автор: Frank Effenberger

Принадлежит: FutureWei Technologies Inc

A network component comprising at least one processor coupled to a memory and configured to exchange security information using a plurality of attributes in a management entity (ME) in an optical network unit (ONU) via an ONU management control interface (OMCI) channel, wherein the attributes provide security features for the ONU and an optical line terminal (OLT). Also included is an apparatus comprising an ONU configured to couple to an OLT and comprising an OMCI ME, wherein the OMCI ME comprises a plurality of attributes that support a plurality of security features for transmissions between the ONU and the OLT, and wherein the attributes are communicated via an OMCI channel between the ONU and the OLT and provide the security features for the ONU and the OLT.

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Номер записи: 76

06-03-2014 дата публикации

SELF-INJECTION LASER, WAVE DIVISION MULTIPLEXING PASSIVE OPTICAL NETWORK SYSTEM AND OPTICAL LINE TERMINAL

Номер: US20140064733A1

Автор: Lin Huafeng, Liu Dekun, XU Zhiguang

Принадлежит: Huawei Technologies Co., Ltd.

Embodiments of the present disclosure provide a self-injection laser, a WDM-PON system and an optical line terminal. The self-injection laser includes a gain medium, an array waveguide grating AWG, a periodic filter and a reflection module. The AWG is configured to multiplex an optical signal received from the gain medium via the branch port, and output the multiplexed optical signal via the common port. The periodic filter is configured to filter the optical signal output by the AWG, where at least a part of the filtered optical signal is reflected by the reflection module, and the reflected signal is returned back and injected to the gain medium. 1. A self-injection laser , comprising:a gain medium;an array waveguide grating (AWG);a periodic filter; anda reflection module;wherein the gain medium is coupled to a branch port of the AWG, and the periodic filter is coupled to a common port of the AWG,wherein the AWG is configured to multiplex an optical signal received from the gain medium via the branch port of the AWG, and output the multiplexed optical signal via the common port of the AWG,wherein the periodic filter is configured to filter the optical signal output by the AWG, andwherein at least a portion of the filtered optical signal is reflected by the reflection module, and the reflected signal is returned and input to the gain medium.2. The self-injection laser according to claim 1 , wherein the periodic filter has multiple transmission peaks claim 1 , and a center wavelength of a wavelength channel of the AWG is located at wavelengths of the transmission peaks of the periodic filter.3. The self-injection laser according to claim 2 , wherein a frequency interval between adjacent transmission peaks of the periodic filter is an integer fraction of a frequency interval of the wavelength channel of the AWG.4. The self-injection laser according to claim 1 , wherein a free spectral range of the periodic filter is consistent with an interval between adjacent ...

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Номер записи: 77

20-03-2014 дата публикации

Serially-distributed devices in a communication network

Номер: US20140079397A1

Автор: Robert E. Beach

Принадлежит: Motorola Solutions Inc

Serially-distributed devices in a communication network include a cable including communication wires, a plurality of devices connected in series with the communication wires along a length of the cable, and a headend interface connected at one end of the cable and operable to provide a communication interface with the devices.

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Номер записи: 78

20-03-2014 дата публикации

Time to Time-Frequency Mapping and Demapping for Ethernet Passive Optical Network over Coax (EPoC)

Номер: US20140079399A1

Автор: BOYD Edward, GOSWAMI Sanjay, Kliger Avi, Montreuil Leo, Ohana Yitshak

Принадлежит: BROADCOM CORPORATION

Embodiments include, but are not limited to, systems and methods for enabling Orthogonal Frequency Division Multiple Access (OFDMA) in the upstream in an Ethernet Passive Optical Network over Coax (EPoC) network. Embodiments include systems and methods for translating Ethernet Passive Optical Network (EPON) upstream time grants to OFDMA resources represented by individual subcarriers of an upstream OFDMA frame. In an embodiment, the translation of EPON upstream time grants to OFDMA resources ensures that Coaxial Network Units (CNUs) sharing an OFDMA frame do not use overlapping subcarriers within the frame. Embodiments further include systems and methods for timing upstream transmissions by the CNUs in order for the transmissions to be received within the same upstream OFDMA frame at a Fiber Coax Unit (FCU). Embodiments further include systems and methods for re-generating a data burst from OFDMA resources for transmission from the FCU to an Optical Line Terminal (OLT). 1. An Ethernet Passive Optical Network over Coax (EPoC) physical layer (PHY) chip for use in a Coaxial Network Unit (CNU) , comprising:a PHY controller configured to receive a Medium Access Control (MAC) bit stream, determine a transmission time duration for the MAC bit stream, and translate the transmission time duration into a frame number and a subcarrier group, wherein the frame number identifies an upstream scheduled multi-subcarrier frame and the subcarrier group identifies a plurality of subcarriers of the multi-subcarrier frame.2. The EPoC PHY chip of claim 1 , wherein the PHY controller is configured to receive the MAC bit stream from a MAC layer via a MAC-PHY interface.3. The EPoC PHY chip of claim 2 , wherein the PHY controller is configured to determine the transmission time duration for the MAC bit stream based on a bit size of the MAC bit stream and an upstream bit loading profile.4. The EPoC PHY chip of claim 3 , wherein the PHY controller is configured to determine the bit size of the ...

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Номер записи: 79

27-03-2014 дата публикации

METHOD FOR RESIZING NETWORK CONNECTION IN THE OPTICAL TRANSPORT NETWORK SUPPORTING PROTECTION SWITCHING

Номер: US20140086581A1

Автор: Youn Ji-Wook

Принадлежит: Electronics and Telecommunications Research Institute

There is provided a method for resizing a network connection in an optical transport network that supports protection switching and receives a flexible Optical channel Data Unit (ODUflex(GFP)) signal. In addition, at nodes located on a protection path for protection switching, only a Link Connection Resize (LCR) protocol, except for a Bandwidth Resize (BWR) protocol, of Hitless Adjustment of ODUflex(GFP) (HAO) procedure is executed. On the other hand, both the LCR protocol and the BWR protocol are executed at nodes located on a working path for protection switching. 1. A method for resizing a network connection in an optical transport network that supports protection switching and receives a flexible Optical channel Data Unit (ODUflex(GFP)) signal , the method comprising:executing, at first nodes located on a protection path for protection switching, only a Link Connection Resize (LCR) protocol, except for a Bandwidth Resize (BWR) protocol, of Hitless Adjustment of ODUflex(GFP) (HAO) procedure.2. The method of claim 1 , further comprising:executing, second nodes located on a working path for protection switching, both the LCR protocol and the BWR protocol.3. The method of claim 1 , wherein a protection-path resize command indicating the only the LCR protocol claim 1 , except for the BWR protocol claim 1 , to be executed is received to the first nodes from a Network Management System (NMS) or a control plane.4. The method of claim 3 ,{'sub': 'P', 'wherein the protection-path resize command is a protection-path INCREASEcommand, and the HAO procedure is terminated without executing the BWR protocol when the LCR protocol is completed.'}5. The method of claim 3 ,{'sub': 'P', 'wherein the protection-path resize command is a protection-path DECREASEcommand, and the HAO procedure is terminated without executing the BWR protocol by completing the LCR protocol that has been never suspended ever since initiation thereof.'}6. The method of claim 3 ,wherein the protection-path ...

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Номер записи: 80

06-01-2022 дата публикации

CONTROL APPARATUS, CONNECTION STATUS REGISTRATION METHOD AND PROGRAM

Номер: US20220006529A1

Автор: OKADA Shingo, TOJO Takuya, YASUKAWA Seisho

Принадлежит:

A control apparatus for registering a connection state between component devices constituting a distributed optical transmission apparatus in a database includes: a device setting unit which performs setting such that light is output from a component device that is a connection source; and a registration processing unit which acquires a light reception level of each port in each component device on a side receiving the light, identifies a port having a light reception level higher than light reception levels of other ports, and registers a component device having the identified port and the identified port in the database as a connection destination of the component device that is the connection source. 1. A control apparatus for registering a connection state between component devices constituting a distributed optical transmission apparatus in a database , the control apparatus comprising:a device setting unit, including one or more processors, configured to perform setting such that light is output from a component device that is a connection source; and acquire a light reception level of each port in each component device on a side receiving the light,', 'identify a port having a light reception level higher than light reception levels of other ports, and', 'register a component device having the identified port and the identified port in the database as a connection destination of the component device that is the connection source., 'a registration processing unit, including one or more processors, configured to2. The control apparatus according to claim 1 , wherein:the component device that is the connection source is an optical switch,the device setting unit is configured to perform setting such that light is output from one port in the optical switch,the registration processing unit is configured to register the component device having the identified port and the identified port in the database as a connection destination of the one port of the optical ...

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Номер записи: 81

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: 82

06-01-2022 дата публикации

DATA TRANSPORT IN A VIRTUALIZED DISTRIBUTED ANTENNA SYSTEM

Номер: US20220007094A1

Автор: Stapleton Shawn Patrick, Trajkovic Sasa

Принадлежит:

A system for routing signals in a Distributed Antenna System (DAS) includes one or more local Digital Access Units (DAUs) located at a local location and one or more remote DAUs located at one or more remote locations. Each of the one or more local DAUs includes an optical port coupled to an upstream unit. The upstream unit includes at least one of a repeater, a baseband unit, a Base Transceiver Station (BTS), or a DAU. The one or more remote DAUs are coupled to the one or more local DAUs via one or more optical cables. A distance between the local location and each of the one or more remote locations is greater than two kilometers. 1a plurality of local Digital Access Units (DAUs) located at a Local location, each of the plurality of local DAUs being coupled to each other and operable to route signals between the plurality of local DAUs, wherein 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 being operable to be coupled to one of one or more sectors of a BTS; anda plurality of remote DAUs located at a Remote location, wherein the plurality of remote DAUs are coupled to each other and operable to transport signals between the plurality of remote DAUs.. A system for routing signals in a Distributed Antenna System, the system comprising: The present application is a continuation of U.S. patent application Ser. No. 16/929,406, filed Jul. 15, 2020, which is a continuation of U.S. patent application Ser. No. 16/039,182, filed Jul. 18 2018, now U.S. Pat. No. 10,721,548 which is a continuation of U.S. patent application Ser. No. 15/445,467, filed Feb. 28, 2017, now U.S. Pat. No. 10,051,350, which is a continuation of U.S. patent application Ser. No. 14/678,779, filed Apr. 3, 2015, now U.S. Pat. No. 9,621,971, which is a continuation of U.S. patent application Ser. No. 13/754,702, filed on Jan. 30, 2013, now U.S. Pat. No. 9,025,956, which claims benefit under 35 U.S.C. § 119 ...

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Номер записи: 83

01-01-2015 дата публикации

SELF-DIAGNOSTIC METHOD FOR PON PROTECTION SYSTEM, AND PON PROTECTION SYSTEM

Номер: US20150003822A1

Автор: FUKADA Youichi, KIMURA Yasutaka, MITSUI Takashi, Sakamoto Takeshi, Yoshimoto Naoto

Принадлежит:

A self-diagnostic method for PON protection system, in which optical switch-related failure can be previously inspected, and a PON protection system. A circuit is configured while an optical switch is switched so that signal light from an ONU is input to both a normal system OSU and a redundancy system OSU of an optical access network including the ONU, and there are conducted a circuit configuration test in which the signal light to the normal system OSU and the signal light to the redundancy system OSU are monitored for a predetermined period of time, and when the signal light to one of the OSUs and the signal light to the other do not correspond to each other, it is judged as abnormality and an open state test in which an optical switch is opened so that the signal light from the ONU is input to only the normal system OSU of the optical access network including the ONU, a circuit of the redundancy system OSU and the ONU is brought into an open state, the signal light to redundancy system OSU is monitored for a predetermined time of period, and when the signal light to the redundancy system exists, it is judged as abnormality. 1. A self-diagnostic method for POM protection system , which comprises , in a Passive Optical Network (PON) including a plurality of optical access networks connecting a normal system optical subscriber line termination board (OSU: Optical Subscriber Unit) as a station-building side transmission device to one or more optical subscriber line terminating devices (ONU: Optical Network Units) as user side transmission devices in a point-to-multipoint , a redundancy system OSU which can communicate with the ONUs administered by the OSU as a substitute for any of the OSUs by switching an optical switch ,such a circuit configuration test being conducted that when the redundancy system OSU is in a standby state, a circuit is configured while the optical switch is switched so that signal light from the ONU is input to both the normal system OSU and ...

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Номер записи: 84

01-01-2015 дата публикации

Feed-Forward Carrier Phase Recovery for Optical Communications

Номер: US20150003825A1

Автор: Zhou Xiang

Принадлежит:

The carrier phase of a carrier wave modulated with information symbols is recovered with a multi-stage, feed-forward carrier phase recovery method. A coarse phase recovery is performed to determine a first phase angle which provides a first best estimate of the information symbol corresponding to the digital signal. Using the first best estimate as input, a second stage of estimation is then performed to determine a second phase angle which provides an improved (second) best estimate of the information symbol. Additional stages of estimation can be performed. 119-. (canceled)20. A method for carrier phase recovery of a carrier wave modulated with a plurality of information symbols , the method comprising:generating a first estimate of an optimal phase angle corresponding to a digital signal by performing a coarse blind phase search;generating a second estimate of the optimal phase angle corresponding to the digital signal by inputting the digital signal and the first estimate of the optimal phase angle into a first maximum likelihood phase recovery and decoding block; andgenerating a third estimate of the optimal phase angle corresponding to the digital signal by inputting the digital signal and the second estimate of the optimal phase angle into a second maximum likelihood phase recovery and decoding block,wherein the carrier wave is modulated with M-ary quadrature amplitude modulation and the performing the coarse blind phase search comprises testing fewer than M test phase angles.21. The method of claim 20 , wherein the generating a second estimate of the optimal phase angle precedes the generating a third estimate of the optimal phase angle.22. The method of claim 20 , wherein generating the second estimate of the optimal phase angle is a part of a coarse phase recovery.23. The method of claim 20 , wherein the information symbol represents data.24. The method of claim 20 , wherein the carrier wave is an optical carrier wave.25. The method of claim 20 , further ...

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Номер записи: 85

05-01-2017 дата публикации

OPTICAL NETWORK TEST INSTRUMENT INCLUDING OPTICAL NETWORK UNIT IDENTIFIER CAPTURE CAPABILITY FROM DOWNSTREAM SIGNALS

Номер: US20170005723A1

Автор: PRAUSE Dominik

Принадлежит:

A test instrument can be coupled to a test point in a passive optical network to measure optical signals transmitted between an optical line terminal and an optical network unit in the optical network. The test instrument can capture an identifier of the ONU from downstream signals sent from the OLT to the ONU. 1. An apparatus connectable to an optical network , the apparatus comprising:a plurality of optical ports connectable to the optical network to optically couple the apparatus between an optical line terminal (OLT) and an optical network unit (ONU) in the optical network;an optical receiver coupled to the plurality of optical ports, wherein the optical receiver is to receive a downstream signal transmitted from the OLT via a first port of the plurality of optical ports and convert the downstream signal to a digital data stream; anda capture circuit to receive the digital data stream from the optical receiver, and store bytes of an OLT message, including the identifier of the ONU, from the digital data stream in data storage of the apparatus.2. The apparatus of comprising:an optical coupler including a plurality of coupler ports and a plurality of drop ports, wherein the downstream signal is received on a first coupler port of the plurality of coupler ports, and the coupler is to output a major portion of the downstream signal power via a second coupler port of the plurality of coupler ports and output a minor portion of the downstream signal power to a downstream data receiver via a first drop port of the plurality of drop ports.3. The apparatus of claim 2 , wherein the second coupler port is coupled to a second optical port of the plurality of optical ports claim 2 , and the second optical port is connected to the ONU claim 2 , and wherein the major portion of the downstream signal power is output to the ONU via the second optical port.4. The apparatus of claim 3 , wherein the apparatus is to receive an upstream signal sent from the ONU to the OLT via the ...

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Номер записи: 86

05-01-2017 дата публикации

Optical Channel Monitor With Integral Optical Switch

Номер: US20170005729A1

Автор: Bartolini Glenn, Cahill Michael, Jasapara Jayesh, Koeppen Christopher S.

Принадлежит: II-VI Incorporated

A multiport optical switch (such as an N×1 switch) is used to controllably select a specific incoming optical signal that is to be processed by an associated optical channel monitor (OCM). The OCM includes a tunable optical filter and photodetector arrangement, and is configured to measure the optical spectrum of the incoming optical signal and extract information associated with the various optical channels (wavelengths) forming the incoming optical signal (i.e., power, wavelength, OSNR and the like for each channel). The OCM also includes a signal processing component that generates a pair of output control signals, a first signal to control the wavelength scanning process of the tunable optical filter and a second signal to control the setting of the multiport optical switch. 1. An optical channel monitoring system comprising:a multiport optical switch including a plurality of input ports and a single output port, each input port receiving a separate optical input signal, with each separate optical input signal including a plurality of separate wavelength channels, the multiport optical switch controlled to selectively couple one input port from the plurality of input ports to the single output port;a tunable optical filter coupled to the single output port of the multiport optical switch for receiving the selected optical input signal, the tunable optical filter controlled to selectively pass different wavelength channels at different points in time;an optical photodetector coupled to the output of the tunable optical filter for converting each wavelength channel into an electrical signal equivalent; anda processor component responsive to the electrical signal equivalent for extracting optical characteristic data therefrom for monitoring the performance of the selected optical signal applied as an input to the tunable optical filter, the processor component further configured to generate a first control signal applied as an input to the multiport switch to ...

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Номер записи: 87

05-01-2017 дата публикации

SCALABLE PROVISIONING OF VIRTUAL OPTICAL NETWORK DEMANDS

Номер: US20170005869A1

Автор: Ghosh Indradeep, Palacharla Paparao, PRASAD Mukul R., Wang Xi, YU Fan

Принадлежит:

A method of mapping virtual optical networks (VONs) to a physical network that includes physical links that connect physical nodes. The method includes reading physical network information, VON demands, and technology constraints of the physical network. The method includes determining whether an iteration parameter violates an iterative condition that determines whether to continue processing the VON demands. If not, the method includes determining whether there are unprocessed subgroups of the VON demands. In response to there being unprocessed subgroups, the method includes selecting a subgroup of the VONs. The method includes computing feasible mapping patterns for the subgroup of the VONs. The method includes finding a size of a largest subset of the subgroup that has a feasible mapping and slot assignment solution. The method includes finding a mapping solution of the subset that has a feasible slot assignment and a slot assignment of the mapping solution. 1. A method of mapping virtual optical networks (VONs) to a physical network that includes one or more physical nodes and one or more physical links that connect the physical nodes , the method comprising:reading physical network information representative of characteristics of the physical nodes and the physical links, one or more VON demands, and one or more technology constraints of the physical network;determining whether an iteration parameter violates an iterative condition that determines whether to continue processing the VON demands;in response to the iteration parameter not violating the iterative condition, determining whether there are unprocessed subgroups of the VON demands;in response to there being one or more unprocessed subgroups, selecting a subgroup of the VONs;computing feasible mapping patterns for the subgroup of the VONs;finding a size of a largest subset of the subgroup that has a feasible mapping and slot assignment solution;finding a mapping solution of the subset that has a ...

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Номер записи: 88

07-01-2016 дата публикации

Method for prolonging transmission distance of passive optical network system and optical line terminal

Номер: US20160006510A1

Автор: Chen Xue, CHEN Yangyang, He Zian, Huang Xingang, LI ChangLei, SU Jie, Zhou Xian

Принадлежит:

Disclosed are a method for prolonging the transmission distance of a passive optical network system and an optical line terminal. The method includes: acquiring each EDC tap coefficient corresponding to each ONU; and according to the each EDC tap coefficient corresponding to the each ONU, performing dispersion compensation respectively on an uplink signal sent from the each ONU. Thus the dispersion suffered by ONUs at different transmission distances can be pertinently compensated, so that the transmission distance of the system can be effectively prolonged. 1. A method for prolonging a transmission distance of a passive optical network (PON) system , comprising:acquiring each electronic dispersion compensation (EDC) tap coefficient corresponding to each optical network unit (ONU); andperforming dispersion compensation on an uplink signal sent from the each ONU respectively according to the each EDC tap coefficient corresponding to the each ONU.2. The method according to claim 1 , after acquiring the each EDC tap coefficient corresponding to the each ONU claim 1 , the method further comprising:updating the acquired each EDC tap coefficient corresponding to the each ONU.3. The method according to claim 2 , wherein updating the acquired each EDC tap coefficient corresponding to the each ONU comprises:in a normal ONU operation phase, updating the acquired each EDC tap coefficient corresponding to the each ONU according to a channel change or a preset time interval.4. The method according to claim 2 , wherein updating the acquired each EDC tap coefficient corresponding to each ONU comprises:updating the acquired each EDC tap coefficient corresponding to the each ONU by using a known field in an existing overhead.5. The method according to claim 1 , wherein acquiring the each EDC tap coefficient corresponding to the each ONU comprises:in an ONU registration phase, calculating the each EDC tap coefficient corresponding to the each ONU according to a training sequence sent ...

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Номер записи: 89

07-01-2016 дата публикации

BURST-MODE RECEIVER, AND METHOD OF BIAS VOLTAGE CONTROL FOR APD OF BURST-MODE RECEIVER

Номер: US20160006517A1

Автор: IHARA Susumu, NODA Masaki, Nogami Masamichi, Yoshima Satoshi

Принадлежит: Mitsubishi Electric Corporation

A burst-mode receiver for receiving burst optical signals having different intensities by a reversely connected APD, including: a current detection circuit outputting a photocurrent that is generated by APD and is output from a current mirror circuit (CMC) as a voltage proportional to the photocurrent, the CMC being connected in series between a power supply and APD; a peak detector circuit detecting and holding a peak value of the output voltage of the current detection circuit; a resistor connection switching circuit, which is inserted between the CMC and APD, for connecting a series resistor to APD in series by switching; and a comparator outputting a switching signal for switching the resistor connection switching circuit so that the series resistor is connected to APD in series in a case where a voltage detected by the peak detector circuit is equal to or more than a predetermined threshold. 1. A burst-mode receiver for receiving burst optical signals having different intensities by a reversely connected APD , the burst-mode receiver comprising:a current detection circuit for outputting a photocurrent that is generated by the reversely connected APD and is output from a current mirror circuit as a voltage proportional to the photocurrent, the current mirror circuit being connected in series between a power supply and the reversely connected APD;a peak detector circuit for detecting and holding a peak value of the output voltage of the current detection circuit;a resistor connection switching circuit, which is inserted between the current mirror circuit and the reversely connected APD, for connecting a series resistor to the reversely connected APD in series by switching; anda comparator for outputting a switching signal for switching the resistor connection switching circuit so that the series resistor is connected to the reversely connected APD in series in a case where a voltage detected by the peak detector circuit is equal to or more than a predetermined ...

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Номер записи: 90

07-01-2016 дата публикации

Method and Device for Managing Optical Channel Overhead, and Optical Signal Receiving Node

Номер: US20160006534A1

Автор: Fu Xihua, Zhang Xinling

Принадлежит:

Disclosed are a method and device for managing optical channel overhead, and an optical signal receiving node. The method comprises: optical channel overhead information is structured, wherein the optical channel overhead information comprises at least one of the following: the optical channel nominal central frequency, the optical channel application code, and the optical channel trail trace identifier; and the optical channel overhead information is sent to the optical signal receiving node. The disclosure solves the technical problem in the related art of an inability to negotiate a single, unified optical channel nominal central frequency and application code between the optical transmitter and the optical receiver, i.e. the disclosure enables an optical transmitter and the optical receiver to negotiate such the nominal central frequency and application code, thereby achieving the technical result of an optical signal being correctly sent and received. 1. A method for managing optical channel overhead , comprising:structuring optical channel overhead information, wherein the optical channel overhead information comprises at least one of the following information: an optical channel nominal central frequency, an optical channel application code, and an optical channel trail trace identifier; andsending the optical channel overhead information to an optical signal receiving node.2. The method according to claim 1 , wherein one Optical Data Unit 4 n (ODUCn) or one Optical Data Unit 4 n Administrative Group (OTUCnAG) is inversely multiplexed onto one or more optical channels claim 1 , wherein the one or more optical channels claim 1 , onto which the same ODUCn or the same OTUCnAG is inversely multiplexed claim 1 , correspond to the same optical channel trail trace identifier and correspond to different optical channel nominal central frequencies; and/or the one or more optical channels claim 1 , onto which different ODUCns or different OTUCnAGs are inversely ...

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Номер записи: 91

07-01-2016 дата публикации

Data Mapping and Multiplexing Method and Device and Data Demultiplexing and Demapping Method and Device

Номер: US20160006545A1

Автор: Fu Xihua, Zhang Xinling

Принадлежит:

Provided are a method and device for mapping, multiplexing, demapping and demultiplexing data are provided. The method includes: mapping an Ethernet service data stream the rate of which is m*100 Gb/s sequentially into m Optical Payload Unit Sub-frames (OPUC) and multiplexing the m OPUC into an Optical Payload Unit Frame (OPUCm) the rate of which is m*100 Gb/s according to the way of byte interleave; and adding an Optical Channel Data Unit (ODU) overhead to the head of the OPUCm to obtain an Optical Channel Data Unit Frame (ODUCm) the rate of which is m*100 Gb/s, wherein the frame structure of the OPUC consists of 4 rows and 3810 columns; the frame structure of the OPUCm consists of 4 rows and 3810*m columns; and the frame structure of the ODUCm consists of 4 rows and 3824*m columns, wherein m is a positive integer. The present disclosure improves the spectrum efficiency of optical fibers and the systematic flexibility and the compatibility. 1. A data mapping and multiplexing method , comprising:mapping an Ethernet service data stream a rate of which is m*100 Gb/s sequentially into m Optical Payload Unit Sub-frames (OPUC) and multiplexing the m OPUC into one Optical Payload Unit Frame (OPUCm) a rate of which is m*100 Gb/s according to a way of byte interleave; andadding an Optical Channel Data Unit (ODU) overhead to a head of the OPUCm to obtain an Optical Channel Data Unit Frame (ODUCm) a rate of which is m*100 Gb/s;wherein a frame structure of each frame of the m OPUC consists of 4 rows and 3810 columns; a frame structure of the OPUCm consists of 4 rows and 3810*m columns; and a frame structure of the ODUCm consists of 4 rows and 3824*m columns, where m is a positive integer.2. The method according to claim 1 , wherein multiplexing the m OPUC into the one OPUCm the rate of which is m*100 Gb/s according to the way of byte interleave comprises:sequentially extracting bytes of each column of the m OPUC, starting from bytes of the first column and ending with bytes of ...

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Номер записи: 92

07-01-2016 дата публикации

CHANNEL MAP FOR OPTICAL NETWORK UNIT ACTIVATION AND ROGUE BEHAVIOR PREVENTION

Номер: US20160006608A1

Автор: Geng Dan, KHOTIMSKY Denis Andreyevich, Yuan Liquan, Zhang Dezhi

Принадлежит:

A multi-wavelength passive optical network (MW-PON) includes an optical distribution network (ODN), a plurality of optical line terminations (OLTs) and an optical network unit (ONU). The ODN includes a trunk fiber, one or more branching elements, and a plurality of distribution fibers. Each OLT is associated with an individual bi-directional wavelength channel using a corresponding single downstream wavelength and a corresponding single upstream wavelength, and supporting a specific downstream line rate and one or more distinct upstream line rates. The ONU is communicatively coupled to a respective distribution fiber, being tunable over a specific range of downstream wavelengths and a specific range of upstream wavelengths, and supporting a specific downstream line rate and a specific upstream line rate. The OLT is configured to assemble a broadcast management message conveying information about bi-directional wavelength channels in said MW-PON system and transmit said message downstream over the associated bi-directional wavelength channel. 1. A multi-wavelength passive optical network (MW-PON) system comprising:an optical distribution network (ODN) comprising a trunk fiber, one or more branching elements coupled to the trunk fiber, and a plurality of distribution fibers coupled to the one or more branching elements;a plurality of optical line terminations (OLTs) communicatively coupled to the trunk fiber, each OLT being associated with an individual bi-directional wavelength channel using a corresponding single downstream wavelength and a corresponding single upstream wavelength, and supporting a specific downstream line rate and one or more distinct upstream line rates;a wavelength multiplexor (WM) coupled between the OLTs and the trunk fiber direct light between the OLTs and the trunk fiber; anda plurality of optical network units (ONUs), each ONU being communicatively coupled to a respective distribution fiber, being tunable over a specific range of downstream ...

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Номер записи: 93

07-01-2016 дата публикации

Methods and Arrangements for Providing Radio Access at Local Site

Номер: US20160006615A1

Автор: ALMEIDA Henrik, Dortschy Boris, LARAQUI Kim, Lu Chenguang, Trojer Elmar

Принадлежит:

Methods and nodes for providing radio access to a communication network () for mobile terminals (T) at a local site (). When a local transition unit () at the local site receives incoming signals from an antenna (a) and associated radio head (b) installed at the local site, the signals are converted into optical form and the local transition unit sends the signals in optical form over an optical link () to a central office () comprising a set of radio units (). A central transition unit () at the central office converts the signals into a form adapted for reception by a radio unit. The central transition unit is further instructed by a control unit () to forward the signals to one of the radio units based on configuration data of the antenna/radio head. The configuration data has been registered at the control unit when received from the antenna/radio head over a control channel automatically at installation. The central transition unit accordingly forwards the signals according to the instruction from the control unit to the correct radio unit for processing in digital format and digital transmission over the communication network. 1. A method for providing radio access to a communication network for one or more mobile terminals at a local site , the method comprising:receiving, by a local transition unit at the local site, analog signals from at least one antenna and associated radio head installed at the local site, when the at least one antenna receives the signals from the one or more mobile terminals,converting, by the local transition unit, the analog signals into optical form,sending, by the local transition unit, the signals in optical form over an optical link to a central office comprising or being connected to a set of radio units,converting, by a central transition unit at the central office, the signals into a form adapted for reception by a radio unit in the set of radio units,instructing or having instructed, by a control unit the central transition ...

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Номер записи: 94

07-01-2016 дата публикации

Method and apparatus for link check in passive optical network

Номер: US20160006631A1

Автор: QIN Zunming

Принадлежит:

A method and an apparatus for checking a PON link are provided. The method includes that MEPs are established respectively at the OLT interface of an OLT and the network interfaces of a plurality of gateways to form an access OAM domain; and in the access OAM domain, an Ethernet OAM message is sent between the MEP of the OLT and the MEP of the corresponding gateway to test the continuity of a service link between the OLT interface of the OLT and the corresponding gateway. Thus, the related functions of the ONU are transferred to the OLT, the OLT simulates the UNI of the ONU to enable the Ethernet OAM function and monitors in real time or manually checks the status of the service link from the gateway to the OLT, so that a failure point of an internal service layer of an access node is determined, the cost on the ONU device and the system configuration and administration cost are reduced greatly, and the Ethernet maintenance requirement of an optical access node in the TR101VLAN architecture is met. 1. A method for link check in a Passive Optical Network (PON) , comprising:establishing Maintenance End Points (MEPs) respectively at an Optical Line Terminal (OLT) interface of an OLT and at network interfaces of a plurality of gateways to form an access Operation, Administration and Maintenance (OAM) domain; andin the access OAM domain, sending an Ethernet OAM message between the MEP of the OLT and an MEP of a corresponding gateway to test continuity of a service link between the OLT interface of the OLT and the corresponding gateway.2. The method according to claim 1 , wherein the Ethernet OAM message carries a Virtual Local Area Network (LAN) Identifier (VID) corresponding to a virtual LAN property of a user.4. The method according to claim 1 , wherein the step of sending an Ethernet OAM message between the MEP of the OLT and an MEP of a corresponding gateway to test continuity of a service link between the OLT interface of the OLT and the corresponding gateway ...

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Номер записи: 95

07-01-2016 дата публикации

METHOD AND NODE FOR DETECTING SUBFRAME SEQUENCE ERROR IN INVERSE MULTIPLEXING

Номер: US20160006636A1

Автор: Fu Xihua, Zhang Xinling

Принадлежит:

Disclosed are a method and a node for detecting subframe misordering, including that: a receiving node receives subframes from a transmitting node, and judges whether a trail trace identifier carried in each subframe received is same with a desired trail trace identifier of a subframe to be received; when the trail trace identifier carried in each subframe received is same with the desired trail trace identifier of the subframe to be received, judges whether a subframe number value carried in each subframe belongs to a range of desired subframe number values of the subframe to be received, and if it has been judged that the subframe number value carried in the received subframe does not belong to the range of desired subframe number values of the subframe to be received, determines that there is subframe misordering. 1. A method for detecting subframe misordering in inverse multiplexing , comprising:a receiving node receiving subframes from a transmitting node, judging whether a trail trace identifier carried in each subframe received is same with a desired trail trace identifier of a subframe to be received; andif the trail trace identifier carried in each subframe received is same with the desired trail trace identifier of the subframe to be received, the receiving node judging whether a subframe number value carried in each subframe belongs to a range of desired subframe number values of the subframe to be received, and if it has been judged that the subframe number value carried in the received subframe does not belong to the range of the desired subframe number values of the subframe to be received, determining that there is subframe misordering.2. The method of claim 1 , wherein claim 1 ,when the subframe is an optical channel transport unit for continue rate (OTUC) subframe, the desired trail trace identifier of the subframe to be received is a trail trace identifier carried in an OTUC subframe under an OTUC high-speed administrative group (OTUCnAG) to be ...

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Номер записи: 96

05-01-2017 дата публикации

Data provisioning

Номер: US20170006361A1

Автор: John Berg, Jon Schnoor

Принадлежит: Cable Television Laboratories Inc

Provisioning of Internet Protocol (IP) configuration data or other configuration related data for devices or services connected to a passive optical network (PON) is contemplated. The provisioning may be facilitated with an optical line terminal (OLT) providing the desired configuration data over the PON to an optical network unit (ONU) connected to the device or service desired for provisioning, such as to enable the ONU to provision the device or service without exchanging Dynamic Host Configuration Protocol (DHCP) messaging with a DHCP server.

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Номер записи: 97

05-01-2017 дата публикации

OPTICAL BURST TRANSPORT NETWORK, NODE, TRANSMISSION METHOD AND COMPUTER STORAGE MEDIUM

Номер: US20170006362A1

Автор: SHANG Yingchun, Shi Sheping, Wang Huitao, Wang Lei

Принадлежит:

Disclosed are an optical burst transport network, a node, a transmission method and a computer storage medium. The method comprises: measuring, by a master node, the network ring length of an OBTN, and according to a measurement result, calculating the length of a data frame, the number of time slots in the data frame, the length of the time slots and the guard interval of the time slots; according to the calculated length of the data frame, the number of time slots in the data frame, the length of the time slots and the guard interval of the time slots, sending a testing data frame and a testing control frame to a slave node to conduct frame synchronization training and time slot synchronization training; according to a result of the frame synchronization training and a result of the time slot synchronization training, sending, by the master node, a data frame and a bandwidth map to the slave node; and according to a bandwidth request sent from the node, generating, by the master node, a new bandwidth map, and sending the new bandwidth map to the slave node. 15.-. (canceled)6. A transmission method for an Optical Burst Transport Network (OBTN) , comprising:measuring, by a master node, a network ring length of the OBTN, and calculating, by the master node, a length of a data frame, the number of timeslots in the data frame, a length of the timeslot and a guard interval for the timeslot according to a result of the measurement;transmitting, by the master node, a test data frame and a test control frame to a slave node according to the calculated length of the data frame, number of the timeslots in the data frame, length of the timeslot and guard interval for the timeslot, for performing frame synchronization training and timeslot synchronization training;transmitting, by the master node, the data frame and a control frame containing a bandwidth map to the slave node according to a result of the frame synchronization training and a result of the timeslot ...

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Номер записи: 98

05-01-2017 дата публикации

Dynamic intelligent bidirectional optical access communication system with object/intelligent appliance-to-object/intelligent appliance interaction

Номер: US20170006363A1

Автор: Mazed Mohammad A.

Принадлежит:

Present invention can enable significant bandwidth to a connected home, which comprises an intelligent subscriber optical subsystem, configured for receiving wavelength/bandwidth on-Demand. The intelligent subscriber optical subsystem also connects with one or more objects; and one or more intelligent appliances, wherein the one object at least comprises a radio module and a sensor/bio-sensor module, wherein the one intelligent appliance at least comprises a processor module and a radio module. 1. An optical system comprising:(a) a node, which is optically connected with a remote node by at least one single-mode optical fiber; (i) an optical subsystem wherein the optical subsystem is selected from the group consisting of: a wavelength division multiplexer, a wavelength division demultiplexer and a cyclic arrayed waveguide grating router,', '(ii) a first optical transmitter of more than one gigabit per second of optical signals, wherein the optical signals are selected from one or more wavelengths of a first set of wavelength, wherein the first transmitter comprises: a laser,', '(iii) a first optical receiver of at least one gigabit per second of optical signals, wherein the optical signals are selected from one or more wavelengths of a second set of wavelength, which are offsets in wavelengths with respect to the first set of wavelengths, wherein the first optical receiver comprises: a photodiode or an avalanche photodiode; and, '(b) the node comprises(c) the remote node, which is optically connected with a subscriber optical subsystem, (i) a second optical receiver of more than one gigabit per second of optical signals, wherein the optical signals are selected from one or more wavelengths of the first set of wavelength wherein the second optical receiver comprises: a photodiode or an avalanche photodiode,', '(ii) an optical micro-subsystem,', 'wherein the optical micro-subsystem comprises: a laser or an optical amplifier or an optical intensity attenuator,', ' ...

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Номер записи: 99

05-01-2017 дата публикации

OPTICAL NETWORK ELEMENT AND METHOD OF OPERATING AN OPTICAL NETWORK ELEMENT

Номер: US20170006364A1

Автор: ANTHAPADMANABHAN Nagaraj Prasanth, NGA Dinh Thi Thuy, WALID Anwar

Принадлежит:

An optical network element is configured to operate in a primary operational state in which the optical network element can exchange optical signals with at least one further optical network element, particularly an optical line terminal of a passive optical network PON. The optical network element is configured to operate in at least one secondary operational state in which an electrical power consumption of the optical network element is lower as compared to the primary operational state. The optical network element is configured to directly transit from the primary operational state to the at least one secondary operational state. 1. Optical network element , particularly optical network unit , ONU , for a passive optical network , PON , , wherein said optical network element is configured to operate in a primary operational state in which said optical network element can exchange optical signals with at least one further optical network element , particularly an optical line terminal of a PON , wherein said optical network element is configured to operate in at least one secondary operational state in which an electrical power consumption of said optical network element is lower as compared to said primary operational state , wherein said optical network element is configured to directly transit from the primary operational state to said at least one secondary operational state.2. Optical network element according to claim 1 , wherein said optical network element is configured to operate in a first secondary operational state in which said optical network element can deactivate an optical receiver and an optical transmitter claim 1 , and a second secondary operational state in which said optical receiver is activated and in which said optical network element can deactivate said optical transmitter claim 1 , wherein said optical network element is configured to transit from the first secondary operational state to the second secondary operational state and/or ...

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Номер записи: 100