Broadcast And Distribution System Patents (Class 398/66)
  • Patent number: 10687234
    Abstract: The present disclosure relates to a communication method and system for converging a 5th-Generation (5G) communication system for supporting higher data rates beyond a 4th-Generation (4G) system with a technology for Internet of Things (IoT). The present disclosure may be applied to intelligent services based on the 5G communication technology and the IoT-related technology, such as smart home, smart building, smart city, smart car, connected car, health care, digital education, smart retail, security and safety services. The present disclosure discloses a method and an apparatus for allocating a PTRS in a next-generation communication system.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: June 16, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hyunil Yoo, Mythri Hunukumbure, Yinan Qi, Hyungju Nam
  • Patent number: 10680843
    Abstract: A network node for use in a hybrid fiber-copper access network, wherein the node includes DSL and reverse-power feed functionality. The node has a substantially cylindrical shape such that it receives an input metallic cable at a first end, an output metallic cable at a second end and an optical fiber cable which is received at a point along the body of the node.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: June 9, 2020
    Assignee: British Telecommunications Public Limited Company
    Inventors: Leslie Humphrey, Ian Horsley, Ian Cooper, Trevor Linney, Trevor Morsman
  • Patent number: 10638400
    Abstract: The specialized networking and application system includes an enforcer configured to intercept the signaling messages and select an optimal SGW, PGW, SMF/UPF and application servers in real time. More specifically, the enforcer intercepts and generates GSM MAP, Diameter, GTP-C and HTTP2/JSON signaling messages. The enforcer executes a policy to force the user devices to re-establish the data connection, thus anchoring at different SGW, PGW, SMF/UPF and application server to keep end-to-end routing path optimal, when the impacting factor changes. The enforcer can further feed its performance data and decision matrix into the analyzer and database to further optimize the decision process. Analyzer and KPI metrics databases are installed at central data centers to collect the KPI data from different probes and enforcer, calculate in real-time the optimal routing path with different decision factors considered, and interact with enforcer to update the latest optimal path status based on the data collected.
    Type: Grant
    Filed: October 22, 2019
    Date of Patent: April 28, 2020
    Assignee: Syniverse Technologies, LLC
    Inventors: Huiyue Xu, Prashant Datar, Ravi Tandon
  • Patent number: 10630387
    Abstract: Embodiments of a method for establishing a virtual access node in an optical access network and a device are disclosed. An identifier of a virtual line corresponding to a physical line is obtained by an access device in a first network after receiving a first message from a user equipment. The physical line is a physical line between the user equipment and a physical access node AN in the first network. The virtual line is a logical line between the user equipment and a virtual AN. Configuration information is obtained by the access device from a configuration server in a second network according to the identifier of the virtual line. The configuration information is used to create the virtual AN. The virtual AN is created by the access device according to the configuration information.
    Type: Grant
    Filed: June 28, 2018
    Date of Patent: April 21, 2020
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Ruobin Zheng
  • Patent number: 10623129
    Abstract: A system comprising a first optical line terminal (OLT) of a first passive optical network (PON) with the first OLT configured to receive user data from a baseband unit (BBU) and send the user data to a remote radio unit (RRU) via a first optical network unit (ONU) of the first PON using a first wavelength, and a second OLT of a second PON, the second OLT configured to obtain control and management (C&M) information, share the C&M information with the first OLT, and send the C&M information to a second ONU that is co-located with the first ONU using a second wavelength.
    Type: Grant
    Filed: September 15, 2017
    Date of Patent: April 14, 2020
    Assignee: Futurewei Technologies, Inc.
    Inventors: Frank Effenberger, Xiang Liu, Huaiyu Zeng
  • Patent number: 10454587
    Abstract: Parallel optical transponders with an optical comb source, and methods of using the same, are provided. The optical comb source can provide multiple optical carriers from a single source. The multiple optical carriers can be phase-aligned, which can allow joint processing of a received signal. The multiple optical carriers can also allow for modulating a demultiplexed data signal using multiple modulators rather than modulating the entire data signal using a single modulator.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: October 22, 2019
    Assignee: Google LLC
    Inventors: Rene Schmogrow, Vinayak Dangui
  • Patent number: 10452446
    Abstract: Transparently executing applications among cores in a multi-processor system includes monitoring elements associated with each processor which align execution of threads within corresponding cores of the processors. Alignment is accomplished by monitoring system resource utilization by each core, comparing process counters associated with corresponding cores, and comparing data sets in and out during application frame switching. In a further aspect, inputs are coordinated by a synchronization element. Likewise, outputs for corresponding cores are compared to ensure no corrupted data is propagated.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: October 22, 2019
    Assignee: Rockwell Collins, Inc.
    Inventors: Nicholas H. Bloom, Eric N. Anderson, Matthew P. Corbett, Timothy R. Fannin, Jason R. Owen
  • Patent number: 10447588
    Abstract: A decentralized Integrated Modular Avionics (IMA) architecture configured for onboard avionics processing eliminates centralized computing cabinets and distributes avionics processing capabilities to a network of smart switching devices positioned throughout the aircraft, each smart switch including a multicore processing environment (MCPE) for generalized application hosting in addition to the switching elements. The smart switching network can be scaled up or down for smaller or larger aircraft, or organically grown by adding more processing components. Additional real-time multicore processors may be located in smart remote data concentrators (RDC) for handling I/O and routing of network data between external remote units and aircraft systems and the hosted applications on the smart switches. The real-time environments executing on the smart RDCs may be reserved for low-latency closed-loop functions, or may host additional general-purpose avionics processing.
    Type: Grant
    Filed: June 28, 2017
    Date of Patent: October 15, 2019
    Assignee: Rockwell Collins, Inc.
    Inventors: Timothy R. Fannin, Nicholas H. Bloom, Matthew P. Corbett, Eric N. Anderson
  • Patent number: 10396972
    Abstract: An optical system supporting timing synchronization, alignment and deskewing across optical modules includes a plurality of optical devices each providing an Optical Tributary Signal (OTSi) which are part of an Optical Tributary Signal Group (OTSiG); and a management communication mechanism between the plurality of optical devices, wherein each of the plurality of optical devices are timing synchronized using the management communication mechanism and Precision Time Protocol (PTP) messaging. Each of the plurality of optical devices can include delay circuitry configured to deskew an associated OTSi with respect to other OTSi signals in the OTSiG.
    Type: Grant
    Filed: February 22, 2018
    Date of Patent: August 27, 2019
    Assignee: Ciena Corporation
    Inventors: Sebastien Gareau, Daniel Claude Perras, Michael Watford
  • Patent number: 10397674
    Abstract: Methods, systems, and apparatus for Passive Optical Network (PON) wavelength bonding are disclosed. In one aspect, a first frame of data to a first optical network unit (ONU) is transmitted by an optical line terminal (OLT) over a first wavelength. While the first frame of data is being transmitted to the first ONU over the first wavelength, a first portion of a second frame of data to a second ONU is transmitted by the OLT over a second wavelength. After transmission of the first frame of data over the first wavelength has completed and while the first portion of the second frame of data is still being transmitted to the second ONU over the second wavelength, a second portion of the second frame of data to the second ONU is transmitted by the OLT over the first wavelength.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: August 27, 2019
    Assignee: ADTRAN, Inc.
    Inventors: Thomas Detwiler, Richard Lee Goodson
  • Patent number: 10320487
    Abstract: An optical link power management scheme takes the best advantage of a dynamic connection environment, where ports may be connected and disconnected at any time, and where data flows may start and stop as needed by the applications using the high speed data links. Power consumption is optimized, eye safety standards are met, and robust connection detection is preserved.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: June 11, 2019
    Assignee: INTEL CORPORATION
    Inventors: Klaus D. Giessler, Christine M. Krause
  • Patent number: 10277966
    Abstract: The present application relates to a bus FC-AE-1553 network system and a method of data transmission and acquisition. The bus FC-AE-1553 network system includes a network controller, at least one network terminal, a bus optical distribution network, an optical splitter and a network matching device. The network controller optical distribution networks used for managing a communication process of the whole bus FC-AE-1553 network system; the network terminal optical distribution networks used for passively receiving an instruction of the network controller in the FC-AE-1553 network system, and completing an operation for the instruction of the network controller; the optical splitter is used for realizing branching of a fibre channel signal; and the network matching device is used for terminal matching of the bus optical distribution network, and realizing sequence forwarding.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: April 30, 2019
    Assignee: BEIJING TASSON SCIENCE & TECHNOLOGY CO. LTD.
    Inventors: Jingzhou Xie, Changming Xian, Peng Xie, Jianglong Wei
  • Patent number: 10256935
    Abstract: A disclosed method for optimizing channel selection in a flexible grid of an optical network may be used to select a minimum number of channels to allocate to traffic between pairs of optical transponders at a particular distance based on the modulation format and the FEC mechanism used. The method may include selecting an initial number of channels to allocate to the traffic, tuning the modulation format for the traffic while potentially reducing the number of channels, and tuning the FEC mechanism for the traffic while potentially further reducing the number of channels. The transponders may support multiple modulation formats of different orders and an adaptive FEC mechanism for which the maximum number of FEC overhead bytes is equal to the number of bytes in the transmitted data packets. The method may be implemented by an SDN controller and may be dependent on a feedback mechanism between the optical transponders.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: April 9, 2019
    Assignee: FUJITSU LIMITED
    Inventor: Arvind Kumar
  • Patent number: 10218455
    Abstract: Embodiments of the present invention provide a method and an apparatus for increasing and decreasing variable optical channel bandwidth. The method for increasing includes: sending a higher order optical channel data unit (HO ODU) frame to which a timeslot increase indication is added to a second NE; starting from a next HO ODU frame, mapping, by an NE, a bit stream formed by a flexible optical transport data unit (ODUflex) bit stream at a first rate and an idle data bit stream to Y timeslots of the HO ODU frame; sending an ODUflex frame to which a rate increase indication is added to the second NE; and starting from a next ODUflex frame, mapping an ODUflex bit stream at a second rate to the Y timeslots of the HO ODU frame.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: February 26, 2019
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Zhiyun Chen, Xing Hu
  • Patent number: 10187154
    Abstract: It is disclosed a optical transmitter for an optical network unit of a multi-wavelength passive optical network comprising an optical line termination and a number of further optical network units for transmitting upstream signals to said optical line termination on multiple upstream channels. The optical transmitter is configured to generate and transmit an optical activation signal carrying activation information to be transmitted to said optical line termination on an upstream channel, the activation signal having an optical power lower than the optical power of each one of said upstream signals. The optical transmitter comprises an optical source, a first electric source configured to modulate the optical source with a first electric signal carrying the activation information; and a second electric source configured to directly modulate the optical source with a second electric signal so as to produce a frequency chirp on the optical activation signal.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: January 22, 2019
    Assignees: TELECOM ITALIA S.p.A., POLITENCNICO DI TORINO
    Inventors: Stefano Capriata, Roberto Gaudino, Valter Ferrero, Maurizio Valvo
  • Patent number: 10153839
    Abstract: A terminal device registration method and a device, where the method includes sending upstream registration window information to a terminal device, where the upstream registration window information indicates a starting position of an upstream registration window to the terminal device, receiving an upstream access signal sent by the terminal device from the starting position of the upstream registration window, where the upstream access signal includes a correlation sequence symbol and at least one orthogonal frequency division multiplexing (OFDM) symbol following the correlation sequence symbol, the correlation sequence symbol is constituted by a first sequence that meets a preset condition, and the at least one OFDM symbol modulates access information by means of differential phase modulation in a frequency domain, and performing upstream ranging according to the starting position of the upstream registration window and the correlation sequence symbol.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: December 11, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Xiaofeng Zhang, Guikai Peng
  • Patent number: 10142094
    Abstract: A first apparatus comprises: a processor configured to generate a first synchronization message; a transmitter coupled to the processor and configured to transmit the first synchronization message to a second apparatus at a first wavelength; and a receiver coupled to the processor and configured to receive a second synchronization message from the second apparatus at a second wavelength and in response to the first synchronization message, the first wavelength and the second wavelength are based on a reduction of a latency difference between the second synchronization message and the first synchronization message, and the processor is further configured to calculate a TO between the first apparatus and the second apparatus based on the reduction.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: November 27, 2018
    Assignee: Futurewei Technologies, Inc.
    Inventors: Xiang Liu, Frank Effenberger, Huaiyu Zeng
  • Patent number: 10009650
    Abstract: A method for processing data by a source device which transmits an object-based audio (OBA) using a high definition media interface (HDMI), includes when a sink device is connected, requesting the sink device to read an enhanced extended display identification data (E-EDID), receiving an E-EDID including OBA-processing information of the sink device from the sink device, the OBA processing information including at least one of capability information indicating capability of processing the OBA and property information required for processing the OBA, and determining whether the sink device is capable of processing the OBA based on the OBA processing information.
    Type: Grant
    Filed: June 12, 2015
    Date of Patent: June 26, 2018
    Assignee: LG ELECTRONICS INC.
    Inventors: Jangwoong Park, Hyeonjae Lee, Dokyun Kim, Jinkwon Lim, Hyunsik Yang
  • Patent number: 10003428
    Abstract: A method of Noisy Window and associated management messages to support set splitting if activating ONUs with uncalibrated transmitter, offering a power grant for unmodulated upstream transmission, measuring the average received optical power in all upstream wavelength channels and providing downstream indication of the upstream wavelength channel with abnormally high average received power.
    Type: Grant
    Filed: March 24, 2014
    Date of Patent: June 19, 2018
    Assignees: ZTE Corporation, ZTE (USA) Inc.
    Inventors: Denis Andreyevich Khotimsky, SongLin Zhu, DeZhi Zhang
  • Patent number: 9977208
    Abstract: A power and optical fiber interface system includes a housing having an interior. A cable inlet is configured to receive a hybrid cable having an electrical conductor and an optical fiber. An insulation displacement connector (IDC) is situated in the interior of the housing configured to electrically terminate the conductor, and a cable outlet is configured to receive an output cable that is connectable to the IDC and configured to output signals received via the optical fiber.
    Type: Grant
    Filed: December 9, 2016
    Date of Patent: May 22, 2018
    Assignee: COMMSCOPE TECHNOLOGIES LLC
    Inventors: Thomas P. Huegerich, Wayne M. Kachmar, Robert Charles Flaig, Dwight Andrew Bretz
  • Patent number: 9942634
    Abstract: A method and apparatus for authentication in a passive optical network are disclosed. In the disclosure, a first terminal serial number of an ONU and a first logic registration code are transmitted from the ONU to an OLT; if the OLT determines that the first terminal serial number does not match a second terminal serial number stored on the OLT, the OLT judges whether the first logic registration code received from the ONU matches a second logic registration code stored on the OLT; the OLT stores the first terminal serial number received from the ONU on the OLT if the first logic registration code matches the second logic registration code.
    Type: Grant
    Filed: April 25, 2017
    Date of Patent: April 10, 2018
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Wei Wu, Hai Gao
  • Patent number: 9893814
    Abstract: Particular embodiments use aggregation logic that reduces the noise in a daisy-chained optical return signal aggregation of multiple nodes. The aggregation logic determines when an input to a transmitter/receiver is not used and disables or turns off that input. Further, in the case of daisy-chaining, a service group aggregation signal (e.g., RF signals) from the customer premise equipment (CPEs) serviced by a respective node are presented to the channel “A” port of a digital return transmitter/receiver. However, internal to the transmitter/receiver, aggregation logic auto-senses what optical return signals have already been aggregated up to that point in the daisy chain and can then intelligently place the service group aggregation signal onto one of the digital return transmitter channels. In one embodiment, if there are two return channels, A and B, whichever of these channels has seen fewer aggregations up to this point, will receive the service group aggregation signal.
    Type: Grant
    Filed: February 16, 2017
    Date of Patent: February 13, 2018
    Assignee: ARRIS Enterprises LLC
    Inventors: Zhijian Sun, Reza A. Saedi, Zoran Maricevic, Dean Painchaud
  • Patent number: 9860072
    Abstract: A system includes a master and a slave coupled via a wire pair for transmitting differential data. The master and slave are each powered by a local DC power supply. In a normal mode, a DC voltage and differential data are supplied over the same wire pair. The differential data is processed by a PHY AC-coupled to the wire pair. To enter a low power sleep mode, such as due to a temporary non-use of the system, the master interrupts the DC voltage on the wire pair, which signals to the slave to enter the sleep mode. The system is woken up by reapplying the DC voltage to the wire pair to signal to the slave to wake up. Only the DC path, and not the data path, is used for signaling the sleep mode and awake mode, so the data path can be disabled to conserve power.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: January 2, 2018
    Assignee: Linear Technology Corporation
    Inventors: Andrew J. Gardner, David M. Dwelley, Heath Stewart
  • Patent number: 9706275
    Abstract: The invention relates to a method for performing network functions for a subscriber-sided (CPE) network access unit (ONT) in a telecommunication's access network with a central unit (CO, OLT), a distribution network (AN), and a multiple of network-sided network termination units (DPD) with subscriber-sided network access units (ONT) connected or connectable thereto, in which network a bidirectional communication path (1) is present between the central unit (CO) and that network-sided network termination unit (DPD), to which the subscriber-sided network access unit (ONT) under consideration is connected, in which for performing network functions a further bidirectional communication path (2) between the subscriber-sided network access unit (ONT) under consideration and the corresponding network-sided network termination unit (DPD) is used in connection with the bidirectional communication path (1) between the central unit (CO, OLT) and that network-sided network termination unit (DPD), as well as to a telecomm
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: July 11, 2017
    Assignee: Alcatel Lucent
    Inventors: Harald Schmuck, Michael Straub, Thomas Pfeiffer, Jörg Hehmann
  • Patent number: 9647801
    Abstract: With the introduction of orthogonal frequency division multiplexing (OFDM) technology to communication channels in a cable network, cable modems that receive data downstream over subcarriers of the OFDM channel are grouped into modulation tiers based on at least one metric. Modulation tiers are generated at a subcarrier group level such that network elements can use different profile tiers depending in the subcarrier group in use. A scheduler facilitates the scheduling of modulation tiers for network element destination groups across subcarrier groups, where the modulation tier for a network element may vary between subcarrier groups. The scheduler also facilitates scheduling multiple network element destination groups for transmission of a plurality of subcarrier groups for optimal transmission to the network elements.
    Type: Grant
    Filed: December 27, 2013
    Date of Patent: May 9, 2017
    Assignee: ARRIS Enterprises, Inc.
    Inventor: Ayham Al-banna
  • Patent number: 9577760
    Abstract: A Universal Serial Bus (USB) key may include an optical transceiver having a USB interface for engagement to an electronic device such as a laptop computer or other USB-configured device. The USB key may include a converter or buffering, isolation, modulation or amplification circuitry. The USB key sends and receives data signals which may be carried upon an optical transmission as generated by an LED light source which in turn is in communication with a host device such as a network processor. The USB key may also include operational amplifiers (op-amps) and transistor amplifiers.
    Type: Grant
    Filed: March 21, 2016
    Date of Patent: February 21, 2017
    Assignee: Federal Law Enforcement Development Services, Inc.
    Inventor: John C. Pederson
  • Patent number: 9503180
    Abstract: Presented herein are techniques for detection and avoidance of interference in a telecommunications network. In one example, a cable modem termination system (CMTS) is configured to receive upstream traffic from a plurality of cable modems. The CMTS detects collision characteristics resulting from substantially simultaneous transmissions from different combinations of the cable modems. Based on the detected collision characteristics, the CMTS designates/identifies collision groups for each of a plurality of the cable modems. After designation of the collision groups, the CMTS schedules upstream transmissions by the plurality of cable modems such that cable modems within the same collision group do not transmit within a same time frame and such that two or more cable modems that are not within the same collision group may transmit within a same time frame.
    Type: Grant
    Filed: September 4, 2014
    Date of Patent: November 22, 2016
    Assignee: Cisco Technology, Inc.
    Inventors: Hang Jin, Tong Liu, Pawel Sowinski, De Fu Li, John Skrobko
  • Patent number: 9287982
    Abstract: 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.
    Type: Grant
    Filed: March 20, 2012
    Date of Patent: March 15, 2016
    Assignee: ZTE CORPORATION
    Inventors: Meiyan Zang, Liquan Yuan, Chaoqin Zhang
  • Patent number: 9250391
    Abstract: A multicast optical switch uses a diffractive bulk optical element, which splits at least one input optical beam into sub-beams, which freely propagate in a medium towards an array of directors, such as MEMS switches, for directing the sub-beams to output ports. Freely propagating optical beams can cross each other without introducing mutual optical loss. The amount of crosstalk is limited by scattering in the optical medium, which can be made virtually non-existent. Therefore, the number of the crossover connections, and consequently the number of inputs and outputs of a multicast optical switch, can be increased substantially without a loss or a crosstalk penalty.
    Type: Grant
    Filed: June 8, 2015
    Date of Patent: February 2, 2016
    Assignee: Lumentum Operations LLC
    Inventors: Sheldon McLaughlin, Peter David Roorda, Paul Colbourne, Barrie Keyworth
  • Patent number: 9225462
    Abstract: The present invention provides a method, apparatus and system for transmitting and receiving a client signal. A client signal is mapped to a low-order ODU via a GFP scheme, wherein the low-order ODU is sized to M equal sized timeslots of a high-order OPUk, wherein the high-order OPUk is divided into N equal sized timeslots, wherein M is any one of a group from 1 to N; wherein if k=2, then N=8, if k=3, then N=32 and if k=4, then N=80. The low-order ODU with the client signal is mapped to M equal sized timeslots of the high-order OPUk via a GMP scheme; and an OTU with the high-order OPUk and overheads is formed, and then the OTU is transmitted.
    Type: Grant
    Filed: February 13, 2014
    Date of Patent: December 29, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Limin Dong, Qiuyou Wu, Qiwen Zhong, Zhiying Yao, Maarten Vissers
  • Patent number: 9210353
    Abstract: Electronic equipment and methods for permitting quick control of the operating state of a source equipment side from sink equipment. A television receiver (sink equipment) 100 and an amplifier (repeater equipment) 200 are interconnected over an HDMI cable 610, and the amplifier 200 and a DVD recorder (source equipment) 300 are interconnected over an HDMI cable 620. Each of the pieces of equipment includes, in addition to an HDMI receiving unit and an HDMI transmitting unit, a high-speed data line I/F included in a bidirectional communication unit that uses predetermined lines of the HDMI cable. The bidirectional communication unit is used to transmit channel selection information, a remote control code instructing recording, “theater mode” designating information, a remote control code, or the like from the television receiver 100 to the audio amplifier 200 or DVD recorder 300.
    Type: Grant
    Filed: December 17, 2014
    Date of Patent: December 8, 2015
    Assignee: Sony Corporation
    Inventors: Yasuhisa Nakajima, Hidekazu Kikuchi, Takamichi Mitsuhashi
  • Patent number: 9184844
    Abstract: An optical network system for controlling a passive optical network (PON) in which at least one symmetric optical subscriber terminal and at least one asymmetric optical subscriber terminal coexist is provided.
    Type: Grant
    Filed: January 18, 2013
    Date of Patent: November 10, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Mun Seob Lee, Dong Soo Lee, Hark Yoo, Sung Chang Kim, Geun Yong Kim, Young Suk Lee
  • Patent number: 9178644
    Abstract: An apparatus comprising a processor, wherein the processor is configured to determine a plurality of available wavelengths that are available to transmit data over an optical network comprising a plurality of downstream nodes, select a plurality of encoding wavelengths from the available wavelengths, wherein the encoding wavelengths are a subset of the available wavelengths, apply a plurality of relative power levels to the encoding wavelengths, and encode the data using the encoding wavelengths and the relative power levels, wherein the encoding wavelengths and the relative power levels dictate the switching behavior of the downstream nodes when the data is received by the downstream nodes.
    Type: Grant
    Filed: October 12, 2012
    Date of Patent: November 3, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Peter Ashwood-Smith, Alan Graves
  • Patent number: 9167323
    Abstract: The disclosure provides a method for quickly updating ranging results of optical network units by an optical line terminal. The method comprises the following steps: an Optical Line Terminal (OLT) distributes an acquired ranging difference to all the Optical Network Units (ONUs); and the current ONU implements quick updating of the ranging result of the current ONU itself according to the acquired ranging difference. The disclosure also provides a system for quickly updating ranging results of ONUs by an OLT, wherein a distributing unit in the OLT is used for distributing an acquired ranging difference to all the ONUs; an updating unit in the ONU is used for implementing quick updating of ranging result of the current ONU itself according to the acquired ranging difference. the method and system of the disclosure can save the quantity of messages, enable quick switching in protection status, thus implementing protection switching efficiently.
    Type: Grant
    Filed: May 14, 2010
    Date of Patent: October 20, 2015
    Assignee: ZTE CORPORATION
    Inventors: Dezhi Zhang, Weiliang Zhang, Liquan Yuan
  • Patent number: 9118435
    Abstract: An integrated passive optical network system is disclosed. The system comprises an optical distribution network (ODN), a time-division multiplexing (TDM)-optical line terminal (OLT), a wavelength-division multiplexing (WDM)-optical line terminal (OLT), a plurality of time-division multiplexing (TDM)-optical network units (ONUs), and at least one wavelength-division multiplexing (WDM)-optical network unit (ONU) comprising a first filter. The TDM-OLT and the WDM-OLT respectively transmit a first optical signal carrying a first downstream signal and a second optical signal carrying a second downstream signal to the ONUs through the ODN, and wavelengths of the second optical signal and the first optical signal are different. The TDM-ONUs respectively retrieve the first downstream signal. The WDM-ONU uses the first filter to retrieve the second downstream signal.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: August 25, 2015
    Assignee: National Chiao Tung University
    Inventors: Chi-Wai Chow, Chien-Hung Yeh, Jiun-Yu Sung
  • Patent number: 9100121
    Abstract: A link setup method for a wavelength-division-multiplexing passive optical network (WDM PON) system. The system includes a service providing device, a local node, and a plurality of subscriber devices. The link setup method includes assigning an initial wavelength for communication between the service providing device and a new subscriber device to be installed in the local node. The assigning of the initial wavelength may be performed as a part of process for activating the subscriber device, and this procedure may be performed between a physical layer of the service providing device and a physical layer of the new subscriber device.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: August 4, 2015
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Eun-Gu Lee, Eui-Suk Jung, Sil-Gu Mun, Jie-Hyun Lee, Han-Hyub Lee
  • Publication number: 20150147061
    Abstract: The specification described a multifunction CSP (MCSP), and a MCSP/ONT assembly that is adapted for mounting inside the customer premises. In the MCSP/ONT assembly the MCSP subunit and the ONT subunit are stacked and attached directly together. The MCSP/ONT assembly combines the functions of the standard CSP box and the ONT box, thus eliminating the need for the building cable. In addition the MCSP subunit is adapted to integrate more than one ONT in the MCSP/ONT assembly. The MCSP subunit comprises a back box, a splice tray, and a cover.
    Type: Application
    Filed: February 5, 2013
    Publication date: May 28, 2015
    Inventors: Denis E. Burek, Willard C. White
  • Patent number: 9042737
    Abstract: In the present invention, wasted power consumption caused when a clock and data recovery unit in an optical network unit in a PON system is activated from a power-saving state is reduced and rapid, secure communication is performed. A clock and data recovery unit includes a phase-locked loop that can be set to normal mode or power-saving mode and that includes a voltage-controlled oscillator and recovers a clock signal and a data signal from input signals. The clock and data recovery unit includes a reference clock multiplier circuit that multiplies a reference clock signal and outputs the multiplied reference clock signal; and a frequency training loop that includes the same voltage-controlled oscillator and performs synchronous oscillation training by the voltage-controlled oscillator using the reference clock multiplier circuit before the phase-locked loop transitions from power-saving mode to normal mode.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: May 26, 2015
    Assignee: SUMITOMO ELECTRIC INDUSTRIES, LTD.
    Inventor: Naruto Tanaka
  • Publication number: 20150139650
    Abstract: Embodiments of the present invention provide a method and an apparatus for transmitting and receiving a client signal in an optical transport network. In the transmission method, a received client signal is mapped into a variable-rate container OTU-N, wherein a rate of the OTU-N is N times as high as a preset reference rate; and then, the variable-rate container OTU-N is split into N optical sub-channel transport units OTUsubs by column, where a rate of each OTUsub equals to the reference rate; next, the N optical sub-channel transport units OTUsubs are modulated onto one or more optical carriers; at last, the one or more optical carriers is transmitted through a fiber.
    Type: Application
    Filed: January 29, 2015
    Publication date: May 21, 2015
    Inventors: Wei Su, Qiuyou Wu, Limin Dong
  • Patent number: 9031409
    Abstract: A headend communications device communicates via a network to downstream network elements, such as cable modems coupled behind optical network units, and allocates and grants timeslots for upstream transmissions from the network elements. The headend communications device has a scheduler for managing and controlling timeslot allocations in a manner avoiding interference such as optical beat interference or FM carrier collisions. The scheduler identifies two or more cable modems or like customer network elements served by the headend communications device that will cause at least a pre-determined intolerable level of interference when allocated overlapping timeslots for upstream transmissions and prevents these two or more cable modems or network elements from being allocated and granted overlapping timeslots.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: May 12, 2015
    Assignee: ARRIS Technology, Inc.
    Inventors: Nagesh S. Nandiraju, Dean A. Stoneback, Amarildo J. C. Vieira
  • Patent number: 9031410
    Abstract: An optical network unit according to the present invention is provided as comprising a configuration that component units built therein are grouped for at least two sheets of substrate modules and arranged thereat. There are provided individual embodiments: (a) arranging an L2 layer and a part of the component unit of an L1 layer at a first substrate module, meanwhile, arranging the left part of the component unit of the L1 layer at a second substrate module; (b) arranging the component units of the L1 layer and of the L2 layer at the first substrate module and the second substrate module individually by grouping therefor; and (c) arranging the component units of the L2 layer and of the L1 layer at the first substrate module and the second substrate module respectively.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: May 12, 2015
    Assignee: Furukawa Electric Co., Ltd.
    Inventors: Kazutaka Shimoosako, Kunio Odaka, Katsuya Aboshi
  • Patent number: 9025954
    Abstract: An apparatus comprising a processor configured to obtain one or more plant conditions regarding at least one of a plurality of customer premises equipment (CPEs) remotely coupled to the apparatus via electrical lines, and divide the plurality of coupled CPEs into a number of profile groups based on the one or more plant conditions, wherein each profile group comprises at least one CPE and supports one or more modulation orders.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: May 5, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Liming Fang, Jim Chen, Li Zhang
  • Patent number: 9025956
    Abstract: 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.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: May 5, 2015
    Assignee: Dali Systems Co. Ltd.
    Inventors: Shawn Patrick Stapleton, Sasa Trajkovic
  • Patent number: 9025960
    Abstract: A method implemented by a middlebox comprising registering a customer premises equipment (CPE) in the middlebox, wherein the CPE is coupled to the middlebox via an electrical line, and facilitating registration of the CPE in a central office (CO) equipment coupled to the middlebox.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: May 5, 2015
    Assignee: Futurewei Technologies, Inc.
    Inventors: Liming Fang, Jim Chen, Li Zhang
  • Patent number: 9020349
    Abstract: An arrangement at a Remote Node, a Remote Node, a Central Office, a WDM-PON and a method in an arrangement at a Remote Node, and a method in a Central Office are provided for supervision of the WDM-PON. The arrangement comprises at least one filter connected to the feeder fiber links and adapted to separate a data signal and an original OTDR signal received on either of the feeder fiber links. Further, the arrangement comprises a first splitter adapted to receive, from the at least one filter, the original OTDR signal, to split the original OTDR signal into a plurality of OTDR sub-signals and to output, to an N*M AWG, the plurality of OTDR sub-signals. The at least one filter is further adapted to output the original OTDR signal to the first splitter and to output the data signal to the AWG, thereby enabling supervision of the WDM-PON.
    Type: Grant
    Filed: March 28, 2012
    Date of Patent: April 28, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: Jiajia Chen, Patryk Urban
  • Patent number: 9007228
    Abstract: An Ethernet-based transmission system using a dying gasp according to the present invention includes an SMPS for supplying power to an Ethernet-based lower level system, detecting a state of a power fault, and outputting a dying gasp alarm signal. A CPU receives the dying gasp alarm signal, and generates and transmits an alarm packet. A PHY chip receives the alarm packet, and uplinks the alarm packet so that the alarm packet is transferred to a higher level stage. An L3 switch receives the alarm packet and determines whether a power fault has occurred in the lower level system. Accordingly, the present invention applies a dying gasp to an Ethernet-based or EPON-based transmission system and is then capable of generating and transmitting an alarm packet so that when a power fault occurs, a device in a higher level network can rapidly determine the occurrence of the power fault.
    Type: Grant
    Filed: July 2, 2013
    Date of Patent: April 14, 2015
    Assignee: UBIQUOSS Inc.
    Inventors: Dong Il Song, Min-kyu Cho
  • Publication number: 20150098703
    Abstract: Embodiments of the present invention provide a method and an apparatus for transmitting and receiving a client signal, and relate to the field of communications technologies. The method includes: mapping the client signal into channels of a parallel transmission frame, where the parallel transmission frame includes at least two channels; adding an overhead for the channels of the parallel transmission frame after the mapping, to form transmission channels of the parallel transmission frame, where bit rates of the transmission channels of the parallel transmission frame are fixed; and modulating the transmission channels of the parallel transmission frame onto one or more optical carriers in a same optical fiber, and transmitting the optical carrier after the modulation.
    Type: Application
    Filed: December 12, 2014
    Publication date: April 9, 2015
    Inventors: Qiuyou Wu, Limin Dong, Wei Su
  • Publication number: 20150098702
    Abstract: A transmission device that is coupled to a mesh network includes a memory, and a processor coupled to the memory, configured to detect an another transmission device in the mesh network, which receives a first data signal that is same as a second data signal requested to the transmission device, and branch the first data signal to the transmission device from the detected another transmission device.
    Type: Application
    Filed: September 30, 2014
    Publication date: April 9, 2015
    Applicant: FUJITSU LIMITED
    Inventors: Toshihiro TOGO, Kanji NAITO, Koji TAKEGUCHI, Mineshi NAKASHIMA
  • Publication number: 20150093112
    Abstract: The present invention provide an optical distribution method that includes determining, a first optical distribution frame and a second optical distribution frame, and generating first port indication information and second port indication information according to fiber patch cord setting information; and sending the first port indication information to the first optical distribution frame, sending the second port indication information to the second optical distribution frame, receiving a first port identity and a fiber patch cord identity corresponding to the first port identity which are sent by the first optical distribution frame, and receiving a second port identity and a fiber patch cord identity corresponding to the second port identity which are sent by the second optical distribution frame.
    Type: Application
    Filed: December 5, 2014
    Publication date: April 2, 2015
    Applicant: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Shiquan Wu, Zhiwei Zhong, Guoping Liu
  • Publication number: 20150093113
    Abstract: The embodiments of the present invention disclose methods and apparatuses for mapping processing and de-mapping processing in an optical transport network. A Lower Order Optical Channel Data Unit (LO ODU) signal is mapped into a payload area of an Optical Channel Data Tributary (ODTU) signal in units of M bytes. M is equal to the number of tributary slots of a Higher Order Optical Channel Payload Unit (HO OPU) that are to be occupied by the ODTU signal, and M is an integer larger than 1. Overhead information is encapsulated to an overhead area of the ODTU signal. Thereafter, the ODTU signal is multiplexed into the HO OPU. In this way, an efficient and universal mode for mapping the LO ODU to the HO OPU is provided.
    Type: Application
    Filed: December 10, 2014
    Publication date: April 2, 2015
    Inventors: Maarten VISSERS, Qiuyou WU, Xin XIAO, Wei SU