Utilizing A Plurality Of Atm Networks (e.g., Mpoa, Sonet, Or Sdh) Patents (Class 370/395.51)
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Patent number: 12184452Abstract: According to one embodiment, a communication device includes: acquisition circuitry including a plurality of data acquirers configured to acquire data for transmission; processing circuitry configured to determine consecutive first sequence numbers for a plurality of pieces of the data acquired by the plurality of data acquirers, and to generate a plurality of packets that include the data acquired by the plurality of data acquirers and the first sequence numbers determined for the plurality of pieces of the data; and transmitting circuitry configured to transmit the plurality of packets wherein the packet includes an identifier that identifies the data acquirer having acquired the data in the packet or an identifier that identifies an application corresponding to the data in the packet.Type: GrantFiled: July 28, 2022Date of Patent: December 31, 2024Assignee: TOYOTA JIDOSHA KABUSHIKI KAISHAInventors: Hirochika Asai, Yusuke Doi, Masahiro Ishiyama, Ryokichi Onishi
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Patent number: 11259192Abstract: Methods and apparatus for communicating audio packets with ultra-low latency at high data rates from an audio source device to one or more audio output devices over a wireless personal area network (WPAN) connection, such as via a Bluetooth connection. Latency is reduced by using time-efficient audio coding and decoding, limited retransmissions, reduced time and frequency of acknowledgements, and by combining Bluetooth Classic (BTC) packets for downlink audio and downlink control with Bluetooth Low Energy (BTLE) packets for uplink control, uplink acknowledgements, and inter-device wireless communication. The number of retransmissions and packet concealments per frame cycle can be limited to an upper threshold number to satisfy a low latency requirement.Type: GrantFiled: September 28, 2018Date of Patent: February 22, 2022Assignee: Apple Inc.Inventors: Sriram Hariharan, Alon Paycher, Ran Irony, Sreeraman Anantharaman, Robert D. Silfvast
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Patent number: 11038664Abstract: Embodiments of the present invention disclose a method and an apparatus for sending a service, a method and an apparatus for receiving a service, and a network system. The method for sending a service includes: obtaining, by a transmit end device, an original data stream; inserting a quantity mark k into the original data stream, to generate a first data stream, where the quantity mark k is a quantity of first data units in the original data stream, and k is greater than or equal to 0; and sending the first data stream.Type: GrantFiled: July 7, 2020Date of Patent: June 15, 2021Assignee: Huawei Technologies Co., Ltd.Inventors: Qiwen Zhong, Xiaofei Xu, Xiaojun Zhang
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Patent number: 11025982Abstract: An interactive media player includes an input interface configured to receive a user input signal, a receiver configured to receive content and data from a server, a synchronizer configured to synchronize the content and the data based on timing information and a self-correcting clock of a user device upon which the media player is included, a graphics overlay processor configured to generate information indicative of a graphics overlay based on the data, and a render engine configured to render the graphics overlay indicating the data synchronized to the content for display on a user interface. The data synchronized to the content is selected based on the user input signal.Type: GrantFiled: March 29, 2019Date of Patent: June 1, 2021Assignee: TWIZTED DESiGN, INC.Inventors: Jan Umansky, Danny Umansky
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Patent number: 10771177Abstract: A method for transmitting a client signal in an optical transport network includes: dividing a payload of an optical payload unit signal into m first-granularity tributary slots; dividing one of the m first-granularity tributary slots into n second-granularity tributary slots, where a rate of the first-granularity tributary slot is n times that of the second-granularity tributary slot, m is a positive integer, and n is a positive integer greater than 1; mapping a first client signal onto a payload in which one or more of the n second-granularity tributary slots are located; adding an overhead of the first-granularity tributary slot and an overhead of the second-granularity tributary slot for the optical payload unit signal, to generate an optical data unit signal; and sending the optical data unit signal.Type: GrantFiled: December 27, 2018Date of Patent: September 8, 2020Assignee: Huawei Technologies Co., Ltd.Inventor: Wei Su
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Patent number: 10547920Abstract: A method and an apparatus for establishing a transmission path for exchanging an optical signal, where a gate device is disposed in front of an optical switch matrix, where the optical signal reaches the optical switch matrix through the gate device. A working state of the gate device and a working state of a first optical switch used for transmitting the optical signal in the optical switch matrix are adjusted in a time sequence such that when a transmission path used for transmitting the optical signal in the optical switch matrix is established, dynamic crosstalk can be reduced, and communication quality is improved.Type: GrantFiled: October 27, 2017Date of Patent: January 28, 2020Assignee: HUAWEI TECHNOLOGIES CO., LTD.Inventor: Xiaoling Yang
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Patent number: 10404447Abstract: A clock recovery device recovers frequency and timing information from an incoming packet stream over asynchronous packet networks. A phase locked loop (PLL) block has predefined states and includes a type II PLL. One of the states involves type II PLL operation. A state machine controller for controls the transition between the predefined states in response to changes in the incoming packet stream. A controlled oscillator is responsive to the PLL block to generate an output signal.Type: GrantFiled: August 8, 2018Date of Patent: September 3, 2019Assignee: MICROSEMI SEMICONDUCTOR ULCInventors: Tariq Haddad, Xihao Li, Robert Friesen
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Patent number: 9998298Abstract: Disclosed is a data transmission method. When it is determined that a transmitting end device and a receiving end device both support a link binding capability, a binding group is established; when data is selected to be transmitted by a binding link in the binding group, the data to be transmitted is encapsulated according to a binding data format and is transmitted through the binding link; and when data is selected to be transmitted by a non-binding link, the data to be transmitted is encapsulated according to a common data format and is transmitted through the non-binding link. Also disclosed are a data transmission apparatus and a computer storage medium.Type: GrantFiled: April 16, 2014Date of Patent: June 12, 2018Assignee: ZTE CORPORATIONInventors: Qiongwen Liang, Lin Wang, Liquan Yuan, Weiliang Zhang, Junjian Zhang
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Patent number: 9871622Abstract: A method for improving the resilience of a communication channel (such as an optical communication channel) to correlated errors (e.g., burst errors), the channel is being formed by a time-multiplexed aggregation of a plurality of lower rate constituent lanes and employs a Forward Error-Correction (FEC) mechanism for forming codewords from data carried by the constituent lanes. Accordingly, the distribution of errors among the codewords is modified by introducing, at the transmitter side, specific delays to the transmission times via the constituent lanes, relative to each other.Type: GrantFiled: March 19, 2015Date of Patent: January 16, 2018Assignee: Multiphy Ltd.Inventors: Omri Levy, Udi Barzilai
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Patent number: 9521095Abstract: It is provided a transport apparatus including: a port information management unit for obtaining port information which includes a type first interfaces, a transport rate of first interfaces, and a physical lane count from the first interfaces into the transport apparatus, and for determining, based on the obtained port information, a virtual lane count into which the physical lanes from the first interfaces are converted; virtual lane creating units for setting as many virtual lanes as the determined virtual lane count; a lane information creating unit for creating, based on the port information, lane information which associates the first interfaces, the physical lane count, and identification information of virtual lanes in association with the physical lanes; and a multiplexing unit for multiplexing data that is transported along the virtual lanes, and for inserting the lane information in an invalid data field which is generated when the data is multiplexed.Type: GrantFiled: March 6, 2015Date of Patent: December 13, 2016Assignee: Hitachi, Ltd.Inventors: Masashi Kono, Satoshi Tsutsumi, Hidehiro Toyoda
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Patent number: 9496960Abstract: Integrated performance monitoring (PM); optical layer operations, administration, maintenance, and provisioning (OAM&P); alarming; amplification, and the like is described in optical transceivers, such as multi-source agreement (MSA)-defined modules. A pluggable optical transceiver defined by an MSA agreement can include advanced integrated functions for carrier-grade operation which preserves the existing MSA specifications allowing the pluggable optical transceiver to operate with any compliant MSA host device with advanced features and functionality, such as Forward Error Correction (FEC), framing, and OAM&P directly on the pluggable optical transceiver. The advanced integrated can be implemented by the pluggable optical transceiver separate and independent from the host device.Type: GrantFiled: September 15, 2015Date of Patent: November 15, 2016Assignee: Menara Networks, Inc.Inventors: Siraj Nour El-Ahmadi, Salam El Ahmadi, Adam R. Hotchkiss, Gabriel E. Cardona
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Patent number: 9407458Abstract: An exemplary method and apparatus are provided for transmitting an asynchronous transport signal over an optical fiber section of an Optical Transport Network. Higher order Optical Data Units of an asynchronous transport signal to be transmitted may be encapsulated into outer transport frames that offer a payload rate higher than a nominal bit rate of the asynchronous transport signal. An output optical signal, which contains the outer transport frames with the encapsulated asynchronous transport signal, is generated at a locally generated clock rate and transmitted over an optical fiber section. To encapsulate the asynchronous transport signal, its bit rate is adapted to the payload rate of the outer transport frames, which is derived from the locally generated clock through a justification and stuffing process. The rate adapted transport signal is then synchronously mapped into the outer transport frames at the rate of the locally generated clock.Type: GrantFiled: November 22, 2013Date of Patent: August 2, 2016Assignee: Alcatel LucentInventors: Klaus-Dieter Fritschi, Gerhard Meyer, Jurgen Rahn, Wolfgang Thomas
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Patent number: 9344210Abstract: A method, a controller, and an Optical Transport Network (OTN) network include provisioning an end-to-end path with a defined committed information rate (CIR) and a peak information rate (PIR) via an optical control plane; computing a path for the end-to-end path based on the CIR and the PIR; configuring the end-to-end path on the computed path at an Optical Channel Data Unit (ODU) data rate supporting the PIR if the computed path can support the PIR or at the ODU data rate supporting the CIR if the computed path can support the CIR and not the PIR; and adjusting the ODU data rate of the end-to-end path based on a rate adjustment requirement in the OTN network and based on the CIR and the PIR.Type: GrantFiled: February 10, 2014Date of Patent: May 17, 2016Assignee: Ciena CorporationInventors: Jeffrey Scott Moynihan, Matthew W. Connolly
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Patent number: 9160654Abstract: Routers split and share routing information among several routers within a group of routers acting as a single border router in an Internet protocol (IP) network, each router comprising a routing table. A router of the group selects routes in the routing table of the router; requests other routers of the group to replace, in their routing tables, each selected route with the router as next hop; associates parts of-non selected routes, each one with another router of the group; and removes and replaces, in the routing table, each-non selected route associated with a router of the group by the associated router as next hop.Type: GrantFiled: January 9, 2013Date of Patent: October 13, 2015Assignee: International Business Machines CorporationInventors: Jean-Claude Dispensa, Amaud Lund
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Patent number: 9077477Abstract: A continuous-mode wavelength converting apparatus, a burst-mode wavelength converting apparatus, a remote termination apparatus and a central office termination apparatus for converting a burst-mode upstream wavelength signal into a continuous-mode upstream wavelength signal, and thereby transmitting the signal to a long distance and increasing link capacity. The continuous-mode wavelength converting apparatus may convert a received burst-mode upstream electric signal into a continuous-mode upstream electric signal by inserting a first frame at the front of the signal as an indicator of a start of the signal, inserting a second frame at the end of the burst-mode upstream electric signal as an indicator of an end of the signal, and inserting an idle signal into at least one remaining region of the burst-mode upstream electric signal.Type: GrantFiled: December 22, 2011Date of Patent: July 7, 2015Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Kwang-Ok Kim, Han-Hyub Lee, Sang-Soo Lee
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Patent number: 9030924Abstract: 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.Type: GrantFiled: December 9, 2009Date of Patent: May 12, 2015Assignee: ZTE CorporationInventors: Ruichun Dai, Dezhi Zhang
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Patent number: 8824504Abstract: A packet add/drop multiplexer and a data transmission method of a packet add/drop multiplexer are provided. The packet add/drop multiplexer includes: a line interface unit including a first line interface and a second line interface; a scheduling unit, configured to schedule a data frame of an input transporting side and send a data frame of an output transporting side through the second line interface; a branch unit, configured to encapsulate received data to a third Transmission Container (T-CONT) data packet and send the third T-CONT data packet to the scheduling unit, or decapsulate a first T-CONT data packet sent by the scheduling unit to recover data.Type: GrantFiled: February 18, 2011Date of Patent: September 2, 2014Assignee: Huawei Technologies Co., Ltd.Inventor: Shimin Zou
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Patent number: 8767748Abstract: A signal distribution circuit includes: first to n-th input lines on which first to n-th signals are respectively input; first to (n?1)th selectors each of which selects one of two inputs under the control of a select signal; and a first output line on which the first signal is output and second to n-th output lines on which output signals of the first to (n?1)th selectors are respectively output, wherein: the first and second inputs of the first selector are supplied with the first signal and the second signal, respectively, the first and second inputs of the i-th selector (i is an integer between 2 and (n?1)) are supplied with the output signal of the (i?1)th selector and the (i+1)th signal, respectively, and any of the selectors, when selected by the select signal, selects the second input and, when not selected by the select signal, selects the first input.Type: GrantFiled: August 29, 2011Date of Patent: July 1, 2014Assignee: Fujitsu LimitedInventors: Masafumi Ohta, Hiromichi Makishima, Hiroyuki Honma
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Patent number: 8755695Abstract: 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.Type: GrantFiled: September 25, 2013Date of Patent: June 17, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Jing Li, Dongning Feng, Dongyu Geng, Frank Effenberger
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Patent number: 8718069Abstract: A transmission apparatus that receives plural packets and transmits a frame of a synchronous network, includes a multiplexing part that divides, in segment units, the plural packets, each segment having a predetermined length, and multiplexes the segments to generate a data stream signal; a transmitting part that transmits the data stream signal to a mapping part; and the mapping part that maps the data stream signal in the frame of the synchronous network.Type: GrantFiled: September 8, 2010Date of Patent: May 6, 2014Assignee: Fujitsu LimitedInventor: Haruhiko Hashimoto
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Patent number: 8711882Abstract: Reframing circuitry controls communications between a physical layer device and a link layer device. In a first direction of communication, the reframing circuitry receives a container frame with the container frame having a first arrangement of columns, and outputs a virtual container frame that includes a modified version of the container frame received by the reframing circuitry, with the modified version of the container frame having a second arrangement of columns different than the first arrangement of columns. For example, the reframing circuitry in generating the modified version of the container frame may remove a path overhead column of the container frame and replace that path overhead column with a stuff column in the modified version of the container frame. The virtual container frame may be configured to include the path overhead column that was removed from the container frame in generating the modified version of the container frame.Type: GrantFiled: December 23, 2011Date of Patent: April 29, 2014Assignee: LSI CorporationInventors: Tao Wang, Yifan Lin, Lin Sun, Hao Li
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Patent number: 8705570Abstract: A communication device includes a control signal generating unit to generate a control signal for each of a plurality of second frames, and a mapping unit to map a payload signal of the plurality of second frames in a payload area of a first frame, and map at least some of the control signals generated by the control signal generating unit in a control signal area of the first frame.Type: GrantFiled: December 16, 2010Date of Patent: April 22, 2014Assignee: Fujitsu LimitedInventors: Tetsuya Uchida, Takashi Kuwabara
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Patent number: 8699499Abstract: Methods and apparatus to provision cloud computing network elements are disclosed. A disclosed example method includes receiving a selection of a cloud networking template from a client, wherein the cloud networking template includes a data center connector type and a wide area network connector type, configuring a virtual machine on a host server based on the cloud networking template, configuring a data center connector based on the data center connector type, configuring a wide area network connector based on the wide area network connector type, and coupling the wide area network connector to the data center connector and coupling the data center connector to the virtual machine within the host server to enable the client to access the virtual machine.Type: GrantFiled: December 8, 2010Date of Patent: April 15, 2014Assignee: AT&T Intellectual Property I, L.P.Inventors: John T. Mulligan, David John Knight, Ronnie R. Kulper, Don J. Moloney, Mai-Uyen Thi Nguyen, Han. Q. Nguyen, Diana Lynn Toll-Verry, Simon S. Zelingher
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Patent number: 8693480Abstract: The present invention provides a method, apparatus and system for transmitting and receiving a client signal. The method for transmitting a client signal includes, at the transmitting end, mapping a client signal to be transmitted to a corresponding low-order Optical Channel Data Unit (ODU) in a low-order ODU set, wherein low-order ODUs in the low-order ODU set having rates increased in order, and having rate correspondence relations with the client signals; mapping the low-order ODU to a timeslot of a high-order Optical Channel Payload Unit (OPU) in a high-order OPU set; and adding overheads to the high-order OPU to form an Optical Channel Transport Unit (OTU), and transferring the OTU to an Optical Transport Network (OTN) for transmission.Type: GrantFiled: March 10, 2010Date of Patent: April 8, 2014Assignee: Huawei Technologies Co., Ltd.Inventors: Limin Dong, Qiuyou Wu, Qiwen Zhong, Zhiying Yao, Maarten Vissers
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Patent number: 8638801Abstract: An optical packet switching system includes: an optical packet switching device configured to route and output an input optical packet signal; an optical amplifier device provided in a stage subsequent to the optical packet switching device; and a dummy packet insertion device configured to insert a dummy packet in an optical packet signal prior to input to the optical amplifier device. A dummy packet includes a flag indicating that the packet is a dummy packet.Type: GrantFiled: December 20, 2011Date of Patent: January 28, 2014Assignee: Fujitsu Telecom Networks LimitedInventor: Reiko Sato
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Patent number: 8634426Abstract: When multiple SDH/SONET frame are accumulated and then lower-order path information removed from multiple frames is multiplexed into the same packet to achieve better transmission efficiency during packetization, the delay for accumulating increases. Disclosed is a transmission device that packetizes an SDH/SONET lower-order path with timing which is an integer factor of 1 cycle of the SDH frame. In this case, the destination loads the same multiple lower-order path in one packet. The result is that delay time accompanying lower-order path packetization is kept to less than the time of 1 cycle of the SDH frame, and the efficiency with which lower-order paths are accommodated in packets is further increased. The result is that improved transmission efficiency is realized.Type: GrantFiled: November 14, 2008Date of Patent: January 21, 2014Assignee: Hitachi, Ltd.Inventors: Yoshio Nogi, Masatoshi Shibasaki, Naohiro Sakakida, Yoshihiro Ashi, Kazutaka Sakai
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Patent number: 8619769Abstract: Packet forwarding systems and methods allow packet-layer transparent, multi-stage packet forwarding among a set of network access points. Packet forwarding across networks utilizing the invention is directly controllable through the upper-layer nodes, e.g. routers, interconnected by such transparent packet forwarding networks. The systems and methods provide packet-layer routing, switching and forwarding look-up-table free and transparent forwarding of label-encapsulated multi-protocol packet traffic among a set of routers. The invention enables flexible and efficient packet multicast and anycast capabilities along with real-time dynamic load balancing and fast packet-level traffic protection rerouting.Type: GrantFiled: February 20, 2009Date of Patent: December 31, 2013Inventor: Mark Henrik Sandstrom
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Patent number: 8611226Abstract: A method, apparatus and system for equalizing flows are provided. The method includes: by a relay node, receiving a link setup request of the service flow sent from a source node; acquiring link load information of each bearer network between the source node and a destination node according to the link setup request of the service flow, and selecting a bearer network with a less link load to set up a forwarding link for a service flow; and forwarding the service flow according to the forwarding link. The technical solution provided by the invention implements the equalization of data flows forwarded on networks, and improves the bearer efficiency and transmission efficiency of bearer networks, thus saving the equipment purchase cost and maintenance cost.Type: GrantFiled: October 29, 2010Date of Patent: December 17, 2013Assignee: Huawei Technologies Co., Ltd.Inventor: Liang Li
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Patent number: 8582582Abstract: A method performed by an optical node, operating as a first network edge device of an optical layer one virtual private network (L1VPN), includes generating, by a first module of the optical node, a first optical data frame, where the first optical data frame includes an L1VPN overhead, and where the L1VPN overhead includes a control plane communication field; generating, by a second module of the optical node, a first control plane message for a second network edge device of the optical L1VPN, where the second network edge device is connected to the first network edge device across a provider network via an optical L1VPN link; incorporating, by the first module, the first control plane message into the control plane communication field of the first optical data frame; and transmitting, by the first module, the first optical data frame to the second network edge device via the optical L1VPN link.Type: GrantFiled: March 26, 2010Date of Patent: November 12, 2013Assignee: Infinera CorporationInventors: Radhakrishna Valiveti, Biao Lu
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Patent number: 8571037Abstract: An optical digital transmission system of the present invention newly defines one second negative stuff byte in an overhead area for accommodation of the client signals with multiplexing into the OTU frame, newly defines one third positive stuff byte in a corresponding tributary slot in a payload area for accommodation of client signals with multiplexing, newly defines stuff control bits that is used for decision of the use of the second negative stuff byte and the third positive stuff byte in three different places in the overhead area for client signal accommodation with multiplexing, performs control by using the newly defined stuff control bits when accommodation of the client signal with the third positive stuff byte or the second negative stuff byte is required, and performs stuff control without using the newly defined stuff control bits when accommodation of the client signal by the third positive stuff byte and the second negative stuff byte is not required.Type: GrantFiled: November 13, 2009Date of Patent: October 29, 2013Assignees: Nippon Telegraph and Telephone Corporation, NTT Electronics CorporationInventors: Shigeki Aisawa, Masahito Tomizawa, Yutaka Miyamoto, Yoshiaki Kisaka, Yasuyuki Endo, Katsuyoshi Miura, Kazuhito Takei
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Patent number: 8571422Abstract: 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. Therefore, the complexity of the implementation of the RE is reduced, and the method is simple and effective.Type: GrantFiled: August 16, 2011Date of Patent: October 29, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Jing Li, Dongning Feng, Dongyu Geng, Frank Effenberger
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Patent number: 8553705Abstract: Service providers can reduce multiple overlay networks by creating multiple logical service networks (LSNs) on the same physical or optical fiber network through use of an embodiment of the invention. The LSNs are established by the service provider and can be characterized by traffic type, bandwidth, delay, hop count, guaranteed information rates, and/or restoration priorities. Once established, the LSNs allow the service provider to deliver a variety of services to customers depending on a variety of factors, for example, a customer's traffic specifications. Different traffic specifications are serviced on different LSNs depending on each LSN's characteristics. Such LSNs, once built within a broadband network, can be customized and have its services sold to multiple customers.Type: GrantFiled: August 8, 2011Date of Patent: October 8, 2013Assignee: Tellabs San Jose, Inc.Inventors: Michael Kazban, Mitri Halabi, Ken Koenig, Vinai Sirkay
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Patent number: 8532094Abstract: A backbone network, comprising a network switch configured to communicate data over Ethernet and SONET/SDH interfaces without encapsulating the data. Also disclosed is a backbone network, comprising a plurality of synchronized network switches, wherein the switches are configured to communicate a plurality of time division multiplexed data streams across at least part of the network via a plurality of Ethernet interfaces and a plurality of SONET/SDH interfaces, and wherein the switches are configured to communicate the data streams without encapsulating the data streams.Type: GrantFiled: October 12, 2011Date of Patent: September 10, 2013Assignee: Futurewei Technologies, Inc.Inventor: Serge Francois Fourcand
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Patent number: 8520685Abstract: A ROADM device generates link information including a virtual link in which a first link that is used by a node apparatus for transmitting a signal and a second link of a ROADM device that is capable of branching a signal transmitted via the first link when the signal is transmitted via a WDM network are virtually connected each other, and transmits the generated link information.Type: GrantFiled: January 31, 2007Date of Patent: August 27, 2013Assignee: Fujitsu LimitedInventors: Akira Nagata, Keiji Miyazaki, Shinya Kano, Yasuki Fujii
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Patent number: 8514897Abstract: A method and a device for mapping Ethernet code blocks to an optical transport network (OTN) for transmission is provided. According to a preset mapping manner, four groups of 10 Gigabit (10G) Ethernet code blocks are uniformly mapped to a payload area of a general frame provision (GFP) frame, or each group of 10G Ethernet code blocks is interleaved into the payload area of each row of the OTN frame. Thus, specific solutions for mapping four groups of 10G Ethernet code blocks having an encoding rate smaller than the minimum payload bandwidth of the OPU3 to the OTN for transmission are provided, thereby achieving transparent transmission without changing the mature OTN architecture.Type: GrantFiled: December 21, 2009Date of Patent: August 20, 2013Assignee: Huawei Technologies Co., Ltd.Inventor: Zhangzhen Jiang
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Patent number: 8509243Abstract: A method and a device for sending a packet based on Tunneling Protocol used in Layer 2 are provided. Specifically, when a traffic flow needs to be sent from a network side to a client via QinQ termination equipment in which the tunneling protocol used in Layer 2 is used, forwarding address information corresponding to the client is obtained by searching a Dynamic Host Configuration Protocol (DHCP) snooping binding table according to Internet Protocol (IP) address information of the client in a packet of the traffic flow. The packet of the traffic flow can be sent to the client according to the obtained forwarding address information.Type: GrantFiled: July 12, 2010Date of Patent: August 13, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Rongwei Gu, Xingguo Sun
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Patent number: 8493982Abstract: The invention relates to a method to discover Optical Network Units (ONU) with different speed capabilities in an Ethernet Passive Optical Network (EPON) by an Optical Line Termination (OLT), where logical links in the network are identified by Logical Link IDs, and the OLT can transmit and receive data with 1 Gbit/s-speed (1 G) and 10 Gbit/s-speed (10 G), and the discovery process is handled in the OLT by a Multi Point Control Process (MPCP), which exchanges messages as Data Units (MPCPDU) with the ONUs. This is achieved by extending the standard MPCPDUs in a way, that backward compatability is assured.Type: GrantFiled: May 5, 2009Date of Patent: July 23, 2013Assignee: Adtran GmbHInventors: Nuno Borges, Marek Hajduczenia, Paulo Miguel Monteiro, Henrique Silva
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Patent number: 8446906Abstract: A method includes receiving client data; extracting overhead data from the client data; mapping the client data into one or more frames, where each of the one or more frames has a frame payload section and a frame overhead section, where the client data is mapped into the frame payload section of the one or more frames; inserting the overhead data into the frame overhead section of the one or more frames; transporting the one or more frames across a network; extracting the overhead data from the frame overhead section of the one or more frames; recovering the client data from the one or more frames; inserting the extracted overhead data into the recovered client data to create modified client data; and outputting the modified client data.Type: GrantFiled: July 1, 2009Date of Patent: May 21, 2013Assignee: Infinera CorporationInventors: Edward E. Sprague, Radhakrishna Valiveti, Jan Bialkowski, Ting-Kuang Chiang, Biao Lu, Rajan Rao, Parthiban Kandappan
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Patent number: 8432921Abstract: A forwarding node decapsulates and encapsulates data. The decapsulation may be performed using pattern matching techniques and the encapsulation may be performed using pattern insertion techniques. The decapsulation and encapsulation are preferably performed by hardware devices such as application specific integrated circuits (ASICs) to enhance the speed of such operations. The decapsulation and encapsulation may be independent of each other and performed on a per virtual circuit basis.Type: GrantFiled: August 26, 2010Date of Patent: April 30, 2013Assignee: Juniper Networks, Inc.Inventors: Steven R. Willis, Gregg F. Bromley, Eric S. Crawley, Frank Kastenholz
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Patent number: 8428069Abstract: Systems, methods, devices, and network architectures are disclosed for creating and implementing secure wireless, wired, and/or optical stealth-enabled networks using specially modified packets, cells, frames, and/or other “stealth” information structures. This enables stealth packets to have a low probability of detection, a low probability of interception, and a low probability of interpretation. Stealth packets are only detected, intercepted, and correctly interpreted by stealth-enabled network equipment. In its simplest form, stealth packet switching modifies the packet structure, protocols, timing, synchronization, and other elements through various rule-violations. This creates stealth packets, which normal equipment cannot receive correctly, and hence normal equipment discards the stealth packets. Stealth packets may be further enhanced with encryption techniques which focus on encrypting the packet structure itself, as opposed to merely encrypting the data.Type: GrantFiled: November 10, 2004Date of Patent: April 23, 2013Inventor: Wayne Richard Howe
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Patent number: 8401010Abstract: A backbone network, comprising a first switch comprising a first port configured to communicate a data stream via an Ethernet interface, and a second port configured to communicate the data stream via a SONET/SDH interface, and a second switch comprising a third port configured to receive the data stream from the first switch via the Ethernet interface, wherein the first switch and the second switch are synchronized.Type: GrantFiled: January 21, 2010Date of Patent: March 19, 2013Assignee: Futurewei Technologies, Inc.Inventor: Serge Francois Fourcand
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Patent number: 8374186Abstract: The present invention provides a method, apparatus and system for transmitting and receiving a client signal. The method for transmitting a client signal includes, at the transmitting end, mapping a client signal to be transmitted to a corresponding low-order Optical Channel Data Unit (ODU) in a low-order ODU set, wherein low-order ODUs in the low-order ODU set having rates increased in order, and having rate correspondence relations with the client signals; mapping the low-order ODU to a timeslot of a high-order Optical Channel Payload Unit (OPU) in a high-order OPU set; and adding overheads to the high-order OPU to form an Optical Channel Transport Unit (OTU), and transferring the OTU to an Optical Transport Network (OTN) for transmission.Type: GrantFiled: November 14, 2011Date of Patent: February 12, 2013Assignee: Huawei Technologies Co., Ltd.Inventors: Limin Dong, Qiuyou Wu, Qiwen Zhong, Zhiying Yao, Maarten Vissers
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Patent number: 8351436Abstract: Provided are an apparatus and method for efficiently and dynamically allocating a bandwidth on a Time Division Multiple Access-based Passive Optical Network (TDMA PON).Type: GrantFiled: August 19, 2008Date of Patent: January 8, 2013Assignee: Electronics and Telecommunications Research InstituteInventors: Bin-yeong Yoon, Man-soo Han, Sung-chang Kim, Hark Yoo, Dong-soo Lee, Jong-deog Kim, Kyeong-hwan Doo, Yong-tae Kim, Kwang-ok Kim, Bong-kyu Kim, Geun-yong Kim, Sung-hoon Kwak, Mun-seob Lee, Le Quan
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Patent number: 8335235Abstract: One embodiment provides a media access control (MAC) module facilitating operations of an Ethernet passive optical network (EPON). The MAC module includes a frame formatter configured to generate a MAC control frame. The generated MAC control frame includes at least one of: an organizationally unique identifier (OUI) field, an OUI-specific operation code (opcode) field, and a number of fields associated with the OUI-specific opcode. Transmission of the MAC control frame facilitates realization of an EPON function based on the fields associated with the OUI-specific opcode.Type: GrantFiled: March 16, 2010Date of Patent: December 18, 2012Assignee: Broadcom CorporationInventors: Lawrence D. Davis, Glen Kramer, Jaroslaw Wojtowicz, Ryan E. Hirth, Edward W. Boyd
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Patent number: 8331379Abstract: The present disclosure relates to the Passive Optical Network (PON) technology, and a method for sending an upstream transfer frame in a PON is provided, so as to improve flexibility of a system and satisfy a requirement that an error probability is reduced as low as possible. The method includes: after success of link, sending a preamble according to an allocated time slot, sending a burst synchronization delimiter, and then sending successively a burst header, a Gigabit-Capable Passive Optical Network (GPON) Transmission Convergence (GTC) frame header, and GTC frame data. In the sent synchronization delimiter, the number of non-zeros is the same as the number of zeros, and in a delimiter sequence, the number of non-zeros on odd bits is equal to the number of zeros on even bits, and the number of non-zeros on even bits is equal to the number of zeros on odd bits.Type: GrantFiled: October 10, 2011Date of Patent: December 11, 2012Assignee: Huawei Technologies Co., Ltd.Inventors: Dongning Feng, Dongyu Geng, Jing Li, Wai Kong Raymond Leung, Frank Effenberger
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Patent number: 8300527Abstract: One embodiment of the present invention provides a system that facilitates dynamic allocation of upstream bandwidth in a passive optical network which includes a central node and at least one remote node. Each remote node is coupled to at least one logical entity, which corresponds to a device or a user, that transmits upstream data to the central node and receives downstream data from the central node. The central node is coupled to an external network outside of the passive optical network through a shared out-going uplink.Type: GrantFiled: May 17, 2010Date of Patent: October 30, 2012Assignee: Broadcom CorporationInventors: John Ferdinand Sisto, Edward Wayne Boyd
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Patent number: 8289962Abstract: A backbone network, comprising a first switch comprising a first port configured to communicate a data stream via an Ethernet interface, and a second port configured to communicate the data stream via a SONET/SDH interface, and a second switch comprising a third port configured to receive the data stream from the first switch via the Ethernet interface, wherein the first switch and the second switch are synchronized.Type: GrantFiled: January 21, 2010Date of Patent: October 16, 2012Assignee: Futurewei Technologies, Inc.Inventor: Serge Francois Fourcand
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Patent number: 8279879Abstract: A chunk format for a large-scale, high data throughput router includes a preamble that allows each individual chunk to have clock and data recovery performed before the chunk data is retrieved. The format includes a chunk header that contains information specific to the entire chunk. A chunk according to the present format can contain multiple packet segments, with each segment having its own packet header for packet-specific information. The format provides for a scrambler seed which allows scrambling the data to achieve a favorable zero and one balance as well as minimal run lengths. There can be a random choice of available scrambler seeds for any particular chunk to avoid malicious forcing of zero and one patterns or run lengths of bit zeroes and ones. There are a chunk cyclical redundancy check (CRC) as well as forward error correction (FEC) bytes to detect and/or correct any errors and also to insure a high degree of data and control integrity.Type: GrantFiled: September 21, 2009Date of Patent: October 2, 2012Assignee: Foundry Networks, LLCInventors: Tony M. Brewer, Harry C. Blackmon, Chris Davies, Harold W. Dozier, Thomas C. McDermott, III, Steven J. Wallach, Dean E. Walker, Lou Yeh
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Patent number: 8259733Abstract: The present disclosure provides systems and methods for rapid circuit provisioning in Optical Transport Networks (OTN) using signaling and routing protocols thereby enabling fast mesh restoration. The present invention utilizes a shim layer between OTN messaging (e.g., GCC or High-Level Data Link Control (HDLC)) and the associated signaling and routing protocol (e.g., OSRP, GMPLS, etc.). If an ODUk Connection CTP or TTP needs to be created, the shim layer runs a fast “OTN Setup” protocol, while buffering out going OTN messages. Incoming messages are still processed and do not require additional buffering. The purpose of the OTN Setup protocol is to allow the OTUk to re-frame on its client ODUk, while buffering out-going messages. When re-framing completes, buffers are released and the OTN messaging resumes without dropping any of the signaling frames.Type: GrantFiled: April 27, 2009Date of Patent: September 4, 2012Assignee: Ciena CorporationInventors: Richard W. Conklin, Matthew Connolly, Vagish Madrahalli
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Patent number: 8259734Abstract: The present invention relates to the Passive Optical Network (PON) technology, and a method for sending an upstream transfer frame in a PON is provided, so as to improve flexibility of a system and satisfy a requirement that an error probability is reduced as low as possible. The method includes: after success of link, sending a preamble according to an allocated time slot, sending a burst synchronization delimiter, and then sending successively a burst header, a Gigabit-Capable Passive Optical Network (GPON) Transmission Convergence (GTC) frame header, and GTC frame data.Type: GrantFiled: August 26, 2011Date of Patent: September 4, 2012Assignee: Huawei Technologies Co., Ltd.Inventors: Dongning Feng, Dongyu Geng, Jing Li, Wai Kong Raymond Leung, Frank Effenberger