公开(公告)号：US10063946B2

公开(公告)日：2018-08-28

申请号：US15545765

申请日：2015-03-04

Applicant: Mitsubishi Electric Corporation

Inventor： Mamiko Tanaka

IPC: H04Q11/00 ,  H04B10/50 ,  H04B10/69 ,  H04J14/02

CPC classification number: H04Q11/0005 ,  H04B10/03 ,  H04B10/50 ,  H04B10/69 ,  H04J14/00 ,  H04J14/02 ,  H04Q2011/0016 ,  H04Q2011/0039

Abstract: A transponder includes a multiplexing section, optical transmitters, optical receivers, an extracting section, and a warning monitor section, wherein the extracting section includes a first signal extracting unit for extracting reception data, a second signal extracting unit for extracting reception data, and a reception signal switching section. When carrier signals are in a link-establishable state, the reception signal switching section supplies reception electric signals generated by the optical receivers to the first signal extracting unit and outputs the reception data. When a carrier signal is in a non-link-establishable state, the reception signal switching section supplies a reception electric signal generated by an optical receiver using a carrier signal in the link-establishable state to the second signal extracting unit and outputs the reception data extracted by the second signal extracting unit.

公开(公告)号：US10056971B2

公开(公告)日：2018-08-21

申请号：US15049516

申请日：2016-02-22

Applicant: AT&T Intellectual Property I, L.P.

Inventor： Martin Birk ,  Mark David Feuer ,  Kathleen A. Tse

IPC: H04B10/293 ,  H04B10/077 ,  H04B10/03

CPC classification number: H04B10/03 ,  H04B10/0777

Abstract: An amplifier receives an optical signal including a number of labeled channels via a fiber. The amplifier determines a count of the labeled channels and a spectral distribution of the labeled channels. The amplifier adjusts a parameter of the amplifier based on the count of the labeled channels and the spectral distribution of the labeled channels. The amplifier amplifies the optical signal at an adjusted output gain resulting from adjusting the parameter of the amplifier.

公开(公告)号：US09985723B2

公开(公告)日：2018-05-29

申请号：US15116700

申请日：2015-02-03

Applicant: CommScope Connectivity Belgium BVBA

Inventor： Kristof Vastmans ,  Johan Geens

IPC: G02F1/00 ,  H04B10/03 ,  G02B6/44 ,  G02B6/35 ,  H04B10/25 ,  H04B10/27 ,  H04Q11/00

CPC classification number: H04B10/03 ,  G02B6/3562 ,  G02B6/4452 ,  H04B10/2504 ,  H04B10/27 ,  H04Q11/0005 ,  H04Q11/0062 ,  H04Q2011/0043 ,  H04Q2011/0081

Abstract: A fiber optic network (10) includes a mobile switching center (MSC) (12) which distributes fiber optic signals to one or more remote cabinets (40, 42, 44). The remote cabinets (40, 42, 44) distribute signals to one or more customers. The cabinets (40, 42, 44) receive service from the MSC (12) or from a temporary service provider, such as a vehicle (500), in the event of a catastrophic failure of the MSC (12). The cabinets (40, 42, 44) include equipment which allows patching to a temporary service provider through a patch panel (200), and sub-racks (154, 156, 158) and supporting cabling (134, 136) to provide service to each of the cabinets in the network.

公开(公告)号：US09954607B2

公开(公告)日：2018-04-24

申请号：US15129105

申请日：2015-03-20

Applicant: NEC Corporation

Inventor： Ryota Abe

IPC: H04B10/03 ,  H04B10/07 ,  H04B10/80 ,  H04J14/02

CPC classification number: H04B10/03 ,  H04B10/296 ,  H04B10/80 ,  H04B10/85 ,  H04J14/02 ,  H04J14/021 ,  H04J14/0221

Abstract: [Problem] To provide an optical transmission/reception device, an optical communication system, an optical communication method, and a program which are capable of securing the confidentiality of information included in an optical signal even when the optical signal is transferred to a device that is not an original transmission destination device.[Solution] This optical transmission/reception device is provided with: a wave separation unit for receiving a wavelength-multiplexed optical signal and separating the same into a plurality of optical signals; a plurality of reception units for receiving each of the plurality of optical signals separated by the wave separation unit; a plurality of output units for outputting optical signals differing in wavelength from each other; a control unit for requesting, in response to the inclusion in the received wavelength-multiplexed optical signal of an optical signal to which a prescribed process has been applied, that a prescribed change be applied to the optical signal outputted by at least one of the plurality of output units; and a wave combining unit for combining the plurality of optical signals outputted from the plurality of output units and outputting the combined signal.

公开(公告)号：US20180109312A1

公开(公告)日：2018-04-19

申请号：US15844795

申请日：2017-12-18

Applicant: International Business Machines Corporation

Inventor： Suresh Guduru

IPC: H04B10/038 ,  H04L12/24 ,  H04L12/46 ,  H04L12/703 ,  H04L12/40 ,  H04B10/03

CPC classification number: H04B10/038 ,  H04B10/03 ,  H04B10/0791 ,  H04L12/40 ,  H04L12/4625 ,  H04L41/0654 ,  H04L41/0659 ,  H04L41/0896 ,  H04L43/0823 ,  H04L45/22 ,  H04L45/28 ,  H04Q11/0066 ,  H04Q2011/0081

Abstract: A first set of signal carriers of a plurality of signal carriers may be determined to be faulty. The first set of signal carriers may be for transmitting a first set of respective lane signals of a plurality of lane signals. A second set of signal carriers of the plurality of signal carriers may be identified as not faulty. The second set of signal carriers may be for transmitting a second set of lane signals of the plurality of lane signals. Based on the determining and identifying, one or more of the first set of lane signals may be routed from the first set of signal carriers through a first subset of the second set of signal carriers, the routing of the one or more of the first set of lane signals may cause a bandwidth capacity to increase to a highest available bandwidth.

公开(公告)号：US09948384B1

公开(公告)日：2018-04-17

申请号：US15360616

申请日：2016-11-23

Applicant: Google Inc.

Inventor： Michele Morara ,  Raphael Cendrillon

IPC: H04B10/079 ,  H04B10/03 ,  H04B10/272

CPC classification number: H04B10/03 ,  H04B10/0791 ,  H04B10/272

Abstract: A method of identifying network faults includes receiving subscriber statuses of customer premises equipment (CPE) of a communication network represented as a tree having a root node and leaf nodes. Each leaf node corresponds to a CPE. For each CPE, the method includes: (i) determining a conditional probability of the subscriber status of the CPE for each sub-tree in the network tree; (ii) determining a joint probability of the subscriber status of the CPE for every sub-tree in the network tree; (iii) determining a joint probability of the subscriber status of the CPE for every residual tree in the network tree; and (iv) determining a Bayesian posterior probability of a cut at each leaf node, given the subscriber status of the CPE. The method further includes determining a network node status topology indicating node statuses of nodes of the network tree based on the determined Bayesian posterior probabilities.

公开(公告)号：US20180062746A1

公开(公告)日：2018-03-01

申请号：US15555960

申请日：2016-03-04

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Shoko OHTERU ,  Namiko IKEDA ,  Saki HATTA ,  Satoshi SHIGEMATSU ,  Nobuyuki TANAKA ,  Kenji KAWAI ,  Junichi KATO ,  Tomoaki KAWAMURA ,  Hiroyuki UZAWA ,  Yuki ARIKAWA ,  Naoki MIURA

IPC: H04B10/27 ,  H04B10/038 ,  H04B10/40 ,  H04J14/02 ,  H04J14/08

CPC classification number: H04B10/27 ,  H04B10/03 ,  H04B10/038 ,  H04B10/272 ,  H04B10/40 ,  H04J14/0221 ,  H04J14/08 ,  H04L12/44 ,  H04Q11/0062 ,  H04Q2011/0081

Abstract: A selection and distribution circuit (13) is provided between N optical transceivers (11) and one PON control circuit (12). The selection and distribution circuit (13) selects the optical transceiver (11) corresponding to an upstream frame that time-divisionally arrives, thereby transferring the upstream frame opto-electrically converted by the transceiver (11) to the PON control circuit (12) and distributing a downstream frame from the PON control circuit (12) to each optical transceiver (11). A power supply control circuit (23) stops power supply to at least one of one of optical transceivers (11) that are not used to transfer the frame of the optical transceivers (11) and a circuit that is not used to transfer the frame in the selection and distribution circuit (13). This can reduce the system cost per ONU in the optical transmission system.

公开(公告)号：US09859974B2

公开(公告)日：2018-01-02

申请号：US14749853

申请日：2015-06-25

Applicant: International Business Machines Corporation

Inventor： Suresh Guduru

IPC: H04L12/707 ,  H04B10/038 ,  H04Q11/00 ,  H04L12/40 ,  H04L12/24 ,  H04L12/26 ,  H04L12/703 ,  H04L12/46

CPC classification number: H04B10/038 ,  H04B10/03 ,  H04B10/0791 ,  H04L12/40 ,  H04L12/4625 ,  H04L41/0654 ,  H04L41/0659 ,  H04L41/0896 ,  H04L43/0823 ,  H04L45/22 ,  H04L45/28 ,  H04Q11/0066 ,  H04Q2011/0081

Abstract: A first set of signal carriers of a plurality of signal carriers may be determined to be faulty. The first set of signal carriers may be for transmitting a first set of respective lane signals of a plurality of lane signals. A second set of signal carriers of the plurality of signal carriers may be identified as not faulty. The second set of signal carriers may be for transmitting a second set of lane signals of the plurality of lane signals. Based on the determining and identifying, one or more of the first set of lane signals may be routed from the first set of signal carriers through a first subset of the second set of signal carriers, the routing of the one or more of the first set of lane signals may cause a bandwidth capacity to increase to a highest available bandwidth.

公开(公告)号：US20170366288A1

公开(公告)日：2017-12-21

申请号：US15527274

申请日：2015-11-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Masahiro YOKOTA ,  Takafumi HAMANO ,  Takashi KOTANIGAWA ,  Kaoru ARAI ,  Kei KITAMURA ,  Hideki MAEDA ,  Yoshiaki YAMADA ,  Takuya OHARA ,  Kengo SHINTAKU

IPC: H04J3/16 ,  H04J14/08 ,  H04L12/801 ,  H04L12/939

CPC classification number: H04J3/1652 ,  H04B10/03 ,  H04J3/14 ,  H04J14/00 ,  H04J14/02 ,  H04J14/08 ,  H04L47/34 ,  H04L49/552

Abstract: A framer in a transmission device that allocates time slots of an optical channel to a logical path, divides client signals received via the logical path to the time slots allocated to the logical path, and transmits the client signals by a plurality of optical suhcarriers using optical wavelengths correlated with the time slots includes: a time slot allocating unit configured to perform a process of reducing a transmission band of the logical path when some of the optical wavelengths are unavailable and changing the time slots allocated to the logical path depending on the reduced transmission band to avoid using the time slots corresponding to the unavailable optical wavelengths.

公开(公告)号：US20170353244A1

公开(公告)日：2017-12-07

申请号：US15537501

申请日：2015-12-15

Applicant: NEC Corporation

Inventor： Hitoshi TAKESHITA ,  Shinsuke FUJISAWA ,  Tomoyuki HINO ,  Akio TAJIMA

IPC: H04B10/275 ,  H04B10/03 ,  H04B10/079 ,  H04J14/02

CPC classification number: H04B10/275 ,  H04B10/03 ,  H04B10/0795 ,  H04J14/02 ,  H04J14/0257 ,  H04L12/437

Abstract: In a multi-layer network, a control load in the upper layer network increases, and the usage efficiency and the reliability of the entire network decrease; therefore, a multi-layer network system according to an exemplary aspect of the present invention includes a first network manager configured to set a logical path in a first network layer; and a second network manager configured to set a physical path corresponding to the logical path, in a second network layer, wherein the second network manager includes a network information storage configured to store physical network information including physical route information and transmission characteristic information on the second network layer, and the first network manager sets the logical path based on the physical network information.