| Fujitsu Network Communications, Inc. Patent applications |
| Patent application number | Title | Published |
|---|
| 20120102162 | DYNAMIC BANDWIDTH ADJUSTMENT FOR MULTIPLE SERVICE SUPPORT - A system and method are provided for dynamically modifying a first bandwidth profile assigned to end user | 04-26-2012 |
| 20120093152 | Method and System for Communicating Multicast Traffic Over Protected Paths - In accordance with embodiments of the present disclosure, a method is provided for communicating multicast traffic. The method may include in response to receipt of multicast control traffic at a network element to be communicated to a protection switching group, communicating the multicast control traffic to each of a working path and a protection path of the protection switching group. The method may also include in response to receipt of multicast control traffic via either of the working path and the protection path, processing the multicast control traffic as if the multicast control traffic was received via both the working path and the protection path. | 04-19-2012 |
| 20110280567 | IDENTIFYING FAULT LOCATIONS IN A NETWORK - Systems and methods for identifying a fault location in an optical network are disclosed. In accordance with one embodiment of the present disclosure, a method for identifying a fault location in an optical network comprises monitoring, by a network element, an eastward optical path and a westward optical path for faults. The method further comprises transmitting, by the network element, a first data packet along the eastward path and a second data packet along the westward path. The first and second data packets comprise an eastward fault indicator and a westward fault indicator comprising information associated with any eastward or westward faults occurring on the eastward or westward paths. The fault indicators indicate the existence of an eastward or westward fault and the network element that detected the fault. | 11-17-2011 |
| 20110280248 | Hierarchical Isolated Learning and Flooding for Metro Ethernet Bridging Domains - In one embodiment, a switch includes a processor coupled to a memory, one or more forwarding tables residing within the memory, and one or more ports. The one or more ports are associated with a plurality of virtual local area networks. The one or more ports are associated with a plurality of bridge domains. Each of the bridge domains is associated with one of the forwarding tables, and each of the forwarding tables is associated with one of the bridge domains. The processor is configured to assign a first tag to a received packet, the first tag comprising an identification of an active bridge domain, assign a second tag to the received packet, look up the destination address of the received packet in one of the forwarding tables, and if the destination address is not found in the forwarding table, and selectively flood the one or more ports of the active bridge domain with a copy of the received packet. The active bridge domain includes one of the plurality of bridge domains. The active bridge domain is associated with the ingress port of the received packet. The second tag includes an identification of one of the plurality of virtual local area networks. | 11-17-2011 |
| 20110249673 | SOFTWARE-ASSISTED VLAN AGING TIMER SCHEME FOR DISTRIBUTED SWITCHING SYSTEMS - A network processing unit includes a first table, a forwarding table, and a processor. The first table includes a first entry for a network, including a network aging, which includes the network processing unit. The forwarding table includes a second entry associated with a network entity which includes an indication of whether network traffic associated with the entity has been encountered in the current or previous network aging period. The processor is configured to receive an indication from a hardware timer that a hardware aging cycle has ended, and then determine whether the network aging period has ended. If so, the processor is configured to determine for a first network entity in the forwarding table whether traffic associated with the entity has been encountered in the current or previous network aging period. If not, then the processor is configured to remove the given first network entity from the forwarding table. | 10-13-2011 |
| 20110237178 | METHOD AND SYSTEM FOR CPRI CASCADING IN DISTRIBUTED RADIO HEAD ARCHITECTURES - A method of communicating between a base band unit and a plurality of remote radio heads includes the steps of receiving a first signal through an antenna in a first remote radio head, transmitting the first signal to a second remote radio head through a digital radio interface, receiving a second signal through an antenna in the second remote radio head, compensating for a delay accrued in the first signal, adding the first signal and the second signal to obtain a resulting signal, and transmitting the resulting signal to a base band unit through a digital radio interface. | 09-29-2011 |
| 20110236024 | METHOD AND APPARATUS FOR PICOCELL DISTRIBUTED RADIO HEADS PROVIDING MACROCELL CAPABILITIES - In one embodiment, a system for telecommunications includes a base band unit, a backhaul network, a shared network, a cascaded chain of remote radio heads, and an optical node coupled to the cascaded chain of remote radio heads. The backhaul network is coupled to the base band unit and to the shared network. The cascaded chain includes a first remote radio head coupled to a first set of antennas, a second remote radio head coupled to a second set of antennas. The second remote radio head is coupled to the first remote radio head through the shared network. The cascaded chain of remote radio heads is coupled to the shared network. The second remote radio head is configured to receive signals from the second set of antennas and communicate the signals to the first remote radio head. The first remote radio head is configured to receive signals from the first set of antennas, receive signals from the from the second remote radio head, and transmit the signals to the base band unit. The base band unit, the first remote radio head, and the second remote radio head communicate through a digital radio interface. The optical node is configured to communicate signals between the backhaul network and data subscribers accessing the shared network. | 09-29-2011 |
| 20110235640 | METHOD AND SYSTEM FOR FORWARDING AND SWITCHING OVER PROTECTED PATHS - In one embodiment, a method for telecommunications includes steps of receiving a first packet through a first port, and determining whether the first packet arrived over a protected path. If the first packet arrived over a protected path, the method also includes the steps of hashing a source address of the first packet, adding a first entry into a forwarding table, and adding a second entry into the forwarding table. The protected path is coupled to at least the first port and a second port. The first entry includes the result of hashing the packet, and an identification of the first port. The second entry includes the result of hashing the packet, and an identification of the second port. | 09-29-2011 |
| 20110217009 | System for Mounting Optical Modules in an Optical Network - A system for connecting optical modules in an optical network may comprise a printed circuit board, two cages, and two connectors. The printed circuit board may house electronic circuitry and a plurality of electronic components. The printed circuit board may have a component side and a solder side. The two cages may be mounted back-to-back on opposite sides of the printed circuit board, each cage having a connector end and an I/O end. The two connectors may be mounted back-to-back on opposite sides of the printed circuit board. Each of the two cages may be configured to guide an optical module into the respective connector. Each of the two cages may be mounted at an angle from the respective surface of the printed circuit board such that the respective I/O ends of the two cages are farther apart than the respective connector ends of the two cages. | 09-08-2011 |
| 20110203844 | Composite Conductive Plastic Filler Panel - A filler panel for blocking an unused portion of a communications system. That filler panel may include an electromagnetic shielding base and a base cover removably coupled to the electromagnetic shielding base. The filler panel may also include an air dam composed substantially of low-cost, nonconductive material coupled to either the electromagnetic shielding base or to the base cover through the electromagnetic shielding base. | 08-25-2011 |
| 20110194562 | Systems and Methods for Communication of Management Traffic Over Link Aggregation Group Interface for a Network Element with Distributed Architecture - According to one embodiment, a network element may include one or more network interfaces and a master control unit communicatively coupled to the one or more network interfaces. The one or more network interfaces may include in the aggregate, a plurality of physical ports configured as member ports of a link aggregation group. The master control unit may be configured to maintain a routing table, such routing table including information regarding which of the plurality of physical ports of the link aggregation group is designated as an active port for management traffic egressing via the link aggregation group, wherein the active port carries a communication channel for the management traffic segregated from carrier traffic, and communicate the routing table to each of the one or more network interfaces. | 08-11-2011 |
| 20110180315 | Filler Panel for Air Flow Management - A filler panel for an electronics shelf is provided. The electronics shelf includes a plurality of slots each configured to receive an electronic device. The filler panel includes a non-conductive main body that includes a front wall, a back wall, a top wall, a bottom wall and a single side wall. The front wall, back wall, top wall and bottom wall are configured to fill a width of a slot of the electronics shelf. The side wall is configured to extend into a depth of the slot, The filler panel also includes an electromagnetic shielding portion comprising a conductive material that is coupled to the main body. The main body further includes one or more vents positioned in each of the top wall and the bottom wall, the vents configured to allow air flow though the main body. | 07-28-2011 |
| 20110180314 | Filler Panel with Cable Management Feature - A filler panel for an electronics shelf is provided. The electronics shelf includes a number of slots each configured to receive an electronic device. The filler panel includes a non-conductive main body that includes a front wall, a side wall, and a back wall. The front wall and back wall are configured to fill a width of a slot of the electronics shelf and the side wall is configured to extend into a depth of the slot. The filler panel also includes an electromagnetic shielding portion made of a conductive material and coupled to the main body. Furthermore, the main body includes one or more cable clips each configured to retain one or more cables within the main body. | 07-28-2011 |
| 20110167119 | Systems and Methods for Processing Heartbeat Messages - According to one embodiment, a method for processing heartbeat messages includes processing heartbeat messages received at a first network interface integral to a first network element from a second network element to determine a first status parameter associated with the second network element. The method may also include processing heartbeat messages received at a second network interface integral to the first network element from the second network element to determine a second status parameter associated with the second network element. The method may further include determining a status of the second network element based on the first status parameter and the second status parameter. | 07-07-2011 |
| 20110154099 | METHOD AND SYSTEM FOR MASKING DEFECTS WITHIN A NETWORK - A method and system for masking defects within a network are disclosed. In accordance with an embodiment of the present invention, a method for masking defects within a network comprises detecting by a service entity defects within a network. The method further comprises determining a number of detected defects associated with a network component included in the network. The method further comprises generating by the network component a summary alarm if the number of detected defects within the network is greater than a first threshold. | 06-23-2011 |
| 20110153804 | METHOD AND SYSTEM FOR REPORTING DEFECTS WITHIN A NETWORK - A method and system for reporting defects within a network are disclosed. In accordance with an embodiment of the present invention, a method for reporting defects within a network comprises generating a summary alarm by a network element based on defects detected within a network. The method further comprises receiving at the network element a first request for the detected defects within the network from a network management system in response to generation of the summary alarm. The method further comprises reporting the detected defects by the network element in response to the first request from the network management system. | 06-23-2011 |
| 20110117915 | METHOD AND SYSTEM FOR DETERMINATION OF WIRELESS DEVICE SPEED VIA CHANNEL QUALITY INDICATOR FADING CHARACTERISTICS - A method for determining the speed of a wireless device includes the steps of receiving channel quality indicator data, determining the fast fading characteristics of the received channel quality indicator data, comparing the fast fading characteristics of the received channel quality indicator data against benchmark channel quality indicator data, and determining the speed of the wireless device based on the comparison. The channel quality indicator data is indicative of the signal quality at a wireless device. The benchmark data includes fast fading characteristics. | 05-19-2011 |
| 20110103223 | System and Method to Determine Resource Status of End-to-End Path - Determining availability of an end-to-end physical path associated with reserved resources of a tunnel may include determining, for one or more nodes, a resource status for one or more resources integral to each node. Resource status for the integral resources of each node may be recorded in a message. Each node may communicate its associated message to one or more other nodes. At least one particular node of the one or more nodes may receive the messages communicated from the one or more nodes. The at least one particular node may store resource statuses for each of the one or more nodes. Based on an analysis of resource statuses, the at least one particular node may determine an availability of an end-to-end path of reserved resources of a tunnel including one or more of the nodes based on an analysis of resource statuses. | 05-05-2011 |
| 20110081145 | DEVICE AND METHOD TO ALLOW FOR UNI-DIRECTIONAL TRAFFIC ON LOCAL AREA NETWORKS - A communication network access device is adapted for duplex communication and provides transmit and receive signal paths. A controllable socket is coupled to the transmit and receive signal paths and linked to a control interface for activating/deactivating the control interface. A pluggable module is coupled to the transmit and receive signal paths via the controllable socket in an activated status and to a transmission path carrying uni-directional signals. The module includes a first optical device and a splitter in the transmission path and is coupled to a second optical device via the splitter. The second optical device responds to a portion of uni-directional signals provided by the splitter for placing the communication access device in a link up condition for uni-directional signals provided by the first optical device to the transmission path serving an optical local area network. | 04-07-2011 |
| 20110080846 | Determining Paths In A Network With Asymmetric Switches - According to particular embodiments, determining paths in a network with asymmetric switches includes receiving a graph representing the network. Each asymmetric switch has defined degree connectivity between one or more pairs of degrees of the asymmetric switch. The graph is transformed to yield a transformed graph that accounts for the asymmetric switches. A routing process is applied to the transformed graph to yield one or more paths through the network. | 04-07-2011 |
| 20110038267 | System and Method for Monitoring the Connectivity of a Path Between Nodes in a Network - A method and system for determining a path between nodes in a network are disclosed. In accordance with an embodiment of the present disclosure, a system for determining a path between nodes in a network comprises a destination node and a link aggregation group (LAG) that includes a first link and a second link. The system further comprises a source node communicatively coupled to the destination node by the LAG where the source node, the LAG and the destination node form a path. The source node is operable to determine a link availability status for each of the first and second links using a layer-2 protection scheme. The source node is further operable to monitor the path for connectivity based on the link availability status using a layer-3 protection scheme. | 02-17-2011 |
| 20110004661 | METHODS AND SYSTEMS FOR MANAGING NETWORK ELEMENTS - A system for managing networks includes a gateway capable of receiving a first TARP request from a requesting node and generating a second TARP request based on the first TARP request. The second TARP request includes an NSAP address of the gateway. The gateway is further capable of transmitting the second TARP request to a destination node. The gateway is also capable of receiving a first TARP response from the destination node and generating a second TARP response based on the first TARP response. The second TARP response includes the NSAP address of the gateway. The gateway is further capable of transmitting the second TARP response to the requesting node. | 01-06-2011 |
| 20100323535 | System and Apparatus for Reducing Crosstalk - An electrical system includes a backplane, a first electrical component, and a second electrical component. The backplane includes a first column of connectors, a second column of connectors, a third column of connectors, and a fourth column of connectors. The backplane also includes a first plurality of conductive paths that couple the connectors in the first column to an alternating sequence of connectors in the third column and the fourth column. Additionally, the backplane includes a second plurality of conductive paths that couple the connectors in the second column to an alternating sequence of connectors in the fourth column and the third column. The first electrical component couples to the backplane through the first column and the second column. The second electrical component couples to the backplane through the third column and the fourth column. | 12-23-2010 |
| 20100312878 | Providing Ring Protection For Access Networks - According to one embodiment, an apparatus comprises one or more hub interfaces and one or more processors. A hub interface is coupled to an access network element of a ring network comprising a number of access network elements. The ring network comprises a pair of rings: a first ring traveling in a first direction and a second ring traveling in a second direction. The processors perform the following for each access network element: facilitate establishing a pair of point-to-point logical connections to couple a access network element to a hub interface at a corresponding dedicated bandwidth, a first connection traveling along the first ring, a second connection traveling along the second ring; facilitate establishing a pair of tunnels on the pair of point-to-point connections; and utilize the tunnels to protect the ring network. | 12-09-2010 |
| 20100296396 | Traffic Shaping Via Internal Loopback - A method for traffic shaping includes receiving traffic from one or more clients at one or more ingress ports of forwarding engine of a network node. The method also includes transmitting at least a portion of the traffic through the forwarding engine to one or more first egress ports of the forwarding engine and shaping the traffic transmitted to the egress ports. Furthermore, the method includes looping the shaped traffic internally within the network node back to one or more ingress ports of the forwarding engine. The method further includes transmitting the looped traffic through the forwarding engine to one or more second egress ports (the second egress ports different than the first egress ports) and outputting the shaped traffic from the network node. | 11-25-2010 |
| 20100288552 | System and Method for Utilizing Plastic Conductive Gaskets - A system and method for shielding electromagnetic radiation includes an apparatus for shielding electromagnetic radiation. The apparatus includes a conductive surface comprised of electrically-conductive plastic. The apparatus further includes a flexible element comprised of electrically-conductive plastic extending from the conductive surface. The element is operable to contact an adjacent surface abutting the flexible element and form a conductive connection with the adjacent surface. When assembled with other components in a housing, the electrically-conductive surface and the flexible element may form a portion of a Faraday shield. | 11-18-2010 |
| 20100254409 | System and Method for Optimizing Network Bandwidth Usage - A method of optimizing bandwidth usage in a link aggregated network includes identifying available bandwidth on a plurality of data links in a link aggregation group, selecting the data link with the least available bandwidth, and determining whether the available bandwidth of the selected data link is less than a guaranteed bandwidth of an incoming data flow. If the available bandwidth of the selected data link is less than the guaranteed bandwidth of the incoming data flow, the method includes selecting the data link with the next least available bandwidth and repeating the previous steps until the available bandwidth of the selected data link is greater than the guaranteed bandwidth of the incoming data flow. The method further includes assigning the data flow to the data link determined to have an available bandwidth greater than the guaranteed bandwidth of the incoming data flow. | 10-07-2010 |
| 20100216319 | Protected and Unprotected Interfaces via I/O Panel Choice - A system comprises a backplane configured to receive a first signal and a second signal from a first plug-in unit, and a third signal and a fourth signal from a second plug-in unit, wherein the backplane is further configured to communicate each of the signals to one or more mid-plane connectors. The system further comprises the one or more mid-plane connectors configured to output the first and third signals at a first output as separate signals, and configured to output the second and fourth signals at a second output as separate signals. The system further comprises one or more I/O panels each configured to receive the first and third signals at a first input and to receive the second and fourth signals at a second input. | 08-26-2010 |
| 20100202117 | Backplane Wiring For An Input-Output Panel Used For Front Or Rear Access - According to one embodiment, an input-output (I-O) panel is transformed. The I-O panel is configured to couple to an array of first midplane connectors of a first shelf configured according to a first format, where the first shelf has rear access. The I-O panel comprises an array of I-O panel connectors and defines an xy-plane. An array of second midplane connectors of a second shelf is transformed to substantially align the second midplane connectors with the I-O panel connectors. The second shelf is configured according to a second format, where the second shelf has front access. The array of second midplane connectors is arranged in columns defining a midplane column axis and rows defining a midplane row axis. | 08-12-2010 |
| 20100189116 | Routing A Packet Flow In A VLAN - According to one embodiment, routing a packet flow includes routing the packet flow from a sender along a first VLAN to a receiver by applying a first service tag to the packet flow. The first service tag comprises a first VLAN identifier with a first masked portion indicating the first VLAN, where the first masked portion is masked to the receiver. The packet flow is sent to the receiver along the first VLAN. The packet flow is switched to a second VLAN associated with the first VLAN by applying a second service tag to the packet flow. The second service tag comprises a second VLAN identifier with a second masked portion indicating the second VLAN, where the second masked portion is masked to the receiver. The packet flow is sent to the receiver along the second VLAN. | 07-29-2010 |
| 20100088577 | Multi-Mode Forward Error Correction - According to one embodiment, a system for multi-mode forward error correction comprises a substrate, forward error correction (FEC) modules, and a controller. The FEC modules are disposed outwardly from the substrate. A first FEC module performs forward error correction according to a first FEC scheme, and a second FEC module performs forward error correction according to a second FEC scheme. The controller configures the first FEC module and the second FEC module to convert from an input FEC scheme to an output FEC scheme for a stream. | 04-08-2010 |
| 20100085687 | Power Distribution System - A back-wiring board that connects to a main circuit board of a power distribution system. The back-wiring board includes a plurality of connectors configured to mechanically secure to a plurality of bus bars. The connectors of the back-wiring board are further configured to receive a voltage signal from the plurality of bus bars and to transmit the voltage signal to the back-wiring board. The back-wiring board also includes a plurality of wire-wrap pins integrated into a surface of the back-wiring board, wherein the wire-wrap pins are configured to receive data input signals. The back-wiring board includes a right-angle connector configured to couple the back-wiring board to the main circuit board. | 04-08-2010 |
| 20100077460 | System And Method For Securing A Network - A method of securing a telecom network, the operation of the telecom network controlled using a plurality of telecom network commands, includes grouping at least some of the plurality of telecom network commands into a plurality of different task sets. Each task set includes one or more telecom network commands. The method further includes grouping at least some of a plurality of users into a plurality of different user groups. In addition, the method includes each user group to the plurality of task sets. The method also includes allowing the at least one user access to the plurality of telecom network commands based on the association of each user group to the plurality of task sets. | 03-25-2010 |
| 20100058311 | Providing Code To A Programmable Device - According to one embodiment, providing a bitstream to one or more programmable devices of a service unit card includes receiving the bitstream at a snooper of the service unit card. The snooper determines whether the bitstream is current. If the bitstream is current, the bitstream is loaded onto the programmable devices. If the bitstream is not current, the received bitstream is discarded, and a substitute bitstream is identified. The substitute bitstream is loaded onto the programmable devices. | 03-04-2010 |
| 20100054153 | Communicating Information Between Core And Edge Network Elements - In particular embodiments, a network element filters information sent to a neighboring network element. In the embodiments, the core network element may determine whether the neighboring network element is an edge network element or a core network element. If the neighboring network element is an edge network element, the core network element may set a filter, remove traffic engineering information according to the filter, and send the remaining information to the neighboring network element. | 03-04-2010 |
| 20100023613 | Managing Pluggable Modules Of A Network Element - Managing pluggable modules of a network element includes receiving an approved pluggable module list for the network element. A pluggable module is received at the network element, and a component identifier of the pluggable module is determined. If the component identifier is on the approved pluggable module list, the pluggable module is approved for operation with the network element. If the component identifier is not on the approved pluggable module list, the pluggable module is rejected for operation with the network element. | 01-28-2010 |
| 20090313703 | File-Based Chat System And Method - A method for computer-based chat includes coupling a plurality of clients to at least one chat file residing in a file system. The method also includes appending a first text from at least one of the plurality of clients to the at least one chat file. In addition, the method includes updating the plurality of clients with changes made to the at least one chat file. | 12-17-2009 |
| 20090279544 | Provisioning Point-To-Multipoint Paths - Establishing a point-to-multipoint path includes establishing a first label switched path from a source to a first destination, where the first label switched path is represented by a first label set comprising first node-label pairs. A second label switched path is established from the source to a second destination, where the second label switched path is represented by a second label set comprising second node-label pairs. One or more of the second node-label pairs are equivalent to one or more of the first node-label pairs. The first label set and the second label set are combined to establish the point-to-multicast path. | 11-12-2009 |
| 20090276830 | Facilitating Protection Of A Maintenance Entity Group - According to one embodiment, maintenance points of a maintenance entity group are identified. The maintenance points comprise end points and intermediate points. A secure connectivity association set is established for the maintenance points. The following is performed for each frame of a number of frames: determining security data of the secure connectivity association set; placing the security data into a frame; and communicating the frame to a maintenance point. The maintenance point is configured to determine whether a frame is acceptable from the security data of the frame. | 11-05-2009 |
| 20090136229 | Method and System for Transmitting Information in an Optical Communication System Using Distributed Amplification - A method and system for transmitting information in an optical communication system includes modulating a non-intensity characteristic of an optical carrier signal with a data signal to generate an optical information signal. The optical information signal is transmitted over an optical link. The optical information signal is amplified over a length of the optical link with a co-launched amplification signal traveling in the optical link in a same direction as the optical information signal. | 05-28-2009 |
| 20090067337 | TESTING A CIRCUIT USING A SHARED BANDWIDTH TEST BUS - According to one embodiment, a method for testing a circuit includes receiving a test access session request, where the test access session request indicates that a test session is to be performed on a circuit path. A reservation message is sent to a test bus, where the reservation message reserves the test bus for the test session. The test bus includes a portion of bandwidth shared among a plurality of network elements. Traffic associated with the circuit path is copied to the test bus. | 03-12-2009 |
| 20090052445 | System and Method for Synchronizing Packet Forwarding Information - In accordance with the teachings of the present invention, a system and method for synchronizing packet forwarding information is provided. In a particular embodiment, the system includes a control processor configured to implement a control plane to generate first forwarding information and transfer the first forwarding information to an active forwarding table of a network processor. The system also includes a network processor configured to implement a forwarding plane to receive packets and use the first forwarding information in the active forwarding table to forward the received packets to one or more network devices. After the control plane is restarted, the control processor is further configured to use the restarted control plane to generate second forwarding information and incrementally update the first forwarding information in the active forwarding table with the second forwarding information while the network processor's forwarding plane continues to forward traffic. | 02-26-2009 |
| 20090038148 | Press-Fit Connector Removal Tool - A system for removing connector pins from a backplane comprises at least two clamp plates and a plurality of pin plates coupled between the clamp plates, the pin plates configured to be positioned between adjacent rows of the connector pins. The system further comprises a tightening mechanism to tighten the clamp plates and the pin plates around the connector pins. In some embodiments, the system comprises a frame assembly configured to be positioned over the clamp plates, and configured to pull the clamp plates, the pin plates, and the connector pins off of the circuit board. | 02-12-2009 |
