Patents by Assignee Tellabs Operations, Inc.
  • Publication number: 20170324504
    Abstract: Method and apparatus of a network configuration configured to permit a dense wavelength division multiplexing (“DWDM”) element to connect to a storage server, an Internet Protocol (“IP”) router, and DWDM network are disclosed. The configuration includes the DWDM network, storage area network (“SAN”) server, IP router, and optical transport network (“OTN”) switch. While the DWDM network transports information via optical fibers, the DWDM switch is coupled to the DWDM network for transporting optical signals. The SAN server is coupled to a port of the DWDM switch and is configured to store data at a remote location. The IP router which is coupled to the DWDM switch facilitates IP traffic between a user and the DWDM network. The OTN switch, coupled to the first DWDM switch, is capable of processing at least a portion of the optical signals.
    Type: Application
    Filed: July 21, 2017
    Publication date: November 9, 2017
    Applicant: Tellabs Operations, Inc.
    Inventors: David Jenkins, Ramasubramanian Anand, Joel Butz
  • Patent number: 9800341
    Abstract: A communications network, in one embodiment, includes a passive optical network (“PON”) network, user equipment (“UE”), and optical network terminal (“ONT”) plug to facilitate data transfer via an optical network. The PON network containing at least one fiber splitter and one optical line terminal (“OLT”) is capable of transmitting optical data. The UE having a high-speed electrical (“HSE”) port is able to process information based on electrical signals received from the HSE port. The ONT plug, in one embodiment, includes a modular electrical connector, a signal converter, and an optical and power hybrid (“OPH”) interface. The modular electrical connector contains at least eight (8) electrical contacts with eight (8) positions and can be inserted into the HSE port. The signal converter is used to convert optical signals received from the optical interface to electrical signals.
    Type: Grant
    Filed: November 12, 2013
    Date of Patent: October 24, 2017
    Assignee: Tellabs Operations, Inc.
    Inventor: Craig Lawrence Lutgen
  • Patent number: 9794182
    Abstract: A network device such as a router or switch, in one embodiment, includes a timing analyzer which is capable of providing timing analysis over one or more network circuits. The timing analyzer, in one aspect, receives a data packet traveling across a circuit emulation service (“CES”) circuit such as T1 or E1 circuit. Upon obtaining an arrival timestamp associated with the data packet, the arrival timestamp is stored in a timestamp buffer in accordance with a first-in first-out (“FIFO”) storage sequence. After identifying the oldest arrival timestamp in the timestamp buffer, an offset is generated based on the result of comparison between the arrival timestamp and the oldest timestamp. The timing analyzer can also be configured to generate timing reports on-demand based on generated offset(s).
    Type: Grant
    Filed: January 26, 2016
    Date of Patent: October 17, 2017
    Assignee: Tellabs Operations, Inc.
    Inventors: Anthony Leonard Sasak, Christopher V. O'Brien
  • Patent number: 9703582
    Abstract: A method or network system able to efficiently redistribute information, data, and/or context between virtual machines (“VMs”) using an in-memory file system (“IMFS”) is disclosed. After requesting memory access by an application program, a process of VM using IMFS is able to forward the memory allocation request from a VM kernel operating under a VM environment to an emulator. The emulator, which operates between the VM kernel and the hypervisor, again redirects the memory allocation request to the hypervisor for storage allocation. The hypervisor subsequently allocates at least a portion of storage space in the IMFS in accordance with the memory allocation request.
    Type: Grant
    Filed: September 7, 2012
    Date of Patent: July 11, 2017
    Assignee: Tellabs Operations, Inc.
    Inventors: Chakravarthi S. Chigurapati, Praveen Madhav, Sebastian Sapa, Anirban Sinha, Travis Frederick Brown, Duncan Stuart Ritchie
  • Patent number: 9686380
    Abstract: A process capable of distributing data is configured to receive a stream of data formatted under a wireless data communication protocol such as Universal Mobile Telecommunications System (“UMTS”) or Long Term Evolution (“LTE”). After identifying the portion of the IP data from the stream of data in accordance with a predefined IP data identifier, the process separates the IP data from the stream of data. Upon reformatting the IP data into one or more IP packets, the IP packet(s) bypasses at least a portion of circuit network and move directly to an Internet router.
    Type: Grant
    Filed: February 20, 2009
    Date of Patent: June 20, 2017
    Assignee: Tellabs Operations, Inc.
    Inventors: Pradeep Samudra, Kerby A. Lyons, Adrien J. Joseph
  • Patent number: 9660753
    Abstract: An optical add/drop multiplexer incorporates an integrated receiver module and an integrated transmitter which are interfaced to an intervening electrical network to provide an add/drop/pass-through functionality. The receiver module incorporates a wavelength demultiplexer which is in turn combined with optical/electrical converters PIN photodiodes, and amplifiers on a per wavelength basis to output a plurality of parallel electrical signals in response to a common optical input. The transmitter module combines an integrated plurality of drive circuits and lasers for converting a plurality of parallel input electrical signals to a plurality of optical signals, on a per wavelength basis, which in turn are coupled via an optical wavelength multiplexer to a common output optical fiber. The interconnected electrical network, ring mesh or tree, can provide a reconfigurable electrical add/drop interface to other portions of the network.
    Type: Grant
    Filed: November 18, 2011
    Date of Patent: May 23, 2017
    Assignee: Tellabs Operations, Inc.
    Inventors: Philip J. Lin, James D. Mills
  • Patent number: 9559775
    Abstract: One embodiment of the present invention illustrates a high-speed PON converter (“HPC”) configured to be a pluggable high-speed PON conversion device used for coupling a user equipment (“UE”) to an optical network. HPC, in embodiment, includes a passive optical network (“PON”) interface, a high-speed electrical (“HSE”) interface, and a conversion component. The PON interface, which is coupled to an optical network via an optical fiber, is able to receive optical information from the optical fiber. The HSE interface is configured to be pluggable to the UE, such as a personal computer (“PC”), laptop, or tablet via a predefined removable connector. The conversion component converts and transmits signals between the HSE and PON interfaces.
    Type: Grant
    Filed: August 15, 2013
    Date of Patent: January 31, 2017
    Assignee: Tellabs Operations, Inc.
    Inventors: Vincent P. Loredo, Jr., Leslie Robert Murray
  • Patent number: 9559987
    Abstract: An apparatus and method of using a cache to improve a learn rate for a content-addressable memory (“CAM”) are disclosed. A network device such as a router or a switch, in one embodiment, includes a key generator, a searching circuit, and a key cache, wherein the key generator is capable of generating a first lookup key in response to a first packet. The searching circuit is configured to search the content of the CAM to match the first lookup key. If the first lookup key is not found in the CAM, the key cache stores the first lookup key in response to a first miss.
    Type: Grant
    Filed: September 26, 2008
    Date of Patent: January 31, 2017
    Assignee: Tellabs Operations, Inc
    Inventors: Venkata Rangavajjhala, Marc A. Schaub
  • Patent number: 9531584
    Abstract: The present invention provides for a method for reserving spare bandwidth for a link in a communication network including a plurality of links. The method provides for monitoring the volume of traffic routed through each link of the communication network. A single link failure for each link is then simulated and the volume of traffic which would be rerouted through each link for maintaining communication and the volume of traffic removed from each link are determined for each simulated single link failure. The difference between the volume of traffic which would need to be rerouted through each link and the corresponding volume of traffic removed from each link is then computed, and a maximum difference value is determined for each link for all simulated single link failures. An amount of spare bandwidth equivalent to the determined maximum difference is then reserved for each link.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: December 27, 2016
    Assignee: Tellabs Operations, Inc.
    Inventors: Robert B. Magill, Philip J. Lin
  • Publication number: 20160261933
    Abstract: Method and apparatus of a network configuration configured to permit a dense wavelength division multiplexing (“DWDM”) element to connect to a storage server, an Internet Protocol (“IP”) router, and DWDM network are disclosed. The configuration includes the DWDM network, storage area network (“SAN”) server, IP router, and optical transport network (“OTN”) switch. While the DWDM network transports information via optical fibers, the DWDM switch is coupled to the DWDM network for transporting optical signals. The SAN server is coupled to a port of the DWDM switch and is configured to store data at a remote location. The IP router which is coupled to the DWDM switch facilitates IP traffic between a user and the DWDM network. The OTN switch, coupled to the first DWDM switch, is capable of processing at least a portion of the optical signals.
    Type: Application
    Filed: March 6, 2015
    Publication date: September 8, 2016
    Applicant: Tellabs Operations, Inc.
    Inventors: David Jenkins, Ramasubramanian Anand, Joel Butz
  • Patent number: 9430502
    Abstract: A method and apparatus for collecting statistics data over a communications network using scalable stateless processes are disclosed. A process capable of obtaining statistics data, in one embodiment, detects a delay associated with the availability of statistics data in accordance with predefined lag duration, and subsequently, adds one or more stateless processes to a pool of stateless processes to increase capacity of collecting statistics data. Upon enabling a stateless process to collect statistics data from network element (“NE”) in response to a statistics collecting tasks, the statistics data is stored in a database.
    Type: Grant
    Filed: September 10, 2010
    Date of Patent: August 30, 2016
    Assignee: Tellabs Operations, Inc.
    Inventors: Mahesh Purushothaman, Debashis Dey, Ajaykumar L. Upadhyay, Anand K. Palanisamy
  • Publication number: 20160142329
    Abstract: A network device such as a router or switch, in one embodiment, includes a timing analyzer which is capable of providing timing analysis over one or more network circuits. The timing analyzer, in one aspect, receives a data packet traveling across a circuit emulation service (“CES”) circuit such as T1 or E1 circuit. Upon obtaining an arrival timestamp associated with the data packet, the arrival timestamp is stored in a timestamp buffer in accordance with a first-in first-out (“FIFO”) storage sequence. After identifying the oldest arrival timestamp in the timestamp buffer, an offset is generated based on the result of comparison between the arrival timestamp and the oldest timestamp. The timing analyzer can also be configured to generate timing reports on-demand based on generated offset(s).
    Type: Application
    Filed: January 26, 2016
    Publication date: May 19, 2016
    Applicant: Tellabs Operations Inc.
    Inventors: Anthony Leonard Sasak, Christopher V. O'Brien
  • Patent number: 9280514
    Abstract: An apparatus and method for managing and maintaining a network device are disclosed. A process performed by a router, for example, is able to generate configuration data in accordance with network configuration of the router and store the data in a memory. A converter generates human-readable representation of requested status in accordance with configuration data. For example, command line interface (“CLI”) show output is generated by the converter for displaying system status. In one embodiment, a second converter is used to convert the configuration data to markup language configuration output such as extensible markup language (“XML”) based CLI output. A script, in one aspect, is able to run test cases to verify network configuration in light of the markup language configuration output.
    Type: Grant
    Filed: July 11, 2012
    Date of Patent: March 8, 2016
    Assignee: Tellabs Operations, Inc.
    Inventors: Malyadri Jaladanki, Surya P. Rao, Gilbert Levesque
  • Patent number: 9270396
    Abstract: A network device such as a router or switch, in one embodiment, includes a timing analyzer which is capable of providing timing analysis over one or more network circuits. The timing analyzer, in one aspect, receives a data packet traveling across a circuit emulation service (“CES”) circuit such as T1 or E1 circuit. Upon obtaining an arrival timestamp associated with the data packet, the arrival timestamp is stored in a timestamp buffer in accordance with a first-in first-out (“FIFO”) storage sequence. After identifying the oldest arrival timestamp in the timestamp buffer, an offset is generated based on the result of comparison between the arrival timestamp and the oldest timestamp. The timing analyzer can also be configured to generate timing reports on-demand based on generated offset(s).
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: February 23, 2016
    Assignee: Tellabs Operations, Inc.
    Inventors: Anthony Leonard Sasak, Christopher V O'Brien
  • Publication number: 20150372866
    Abstract: A network element (“NE”) is capable of starting an automatic configuration in response to an initiator such as a dongle. In one embodiment, after resetting a counter used for identifying a signal, a process for the automatic configuration forces a first test signal at a test mode output (“TMO”) pin of a console interface to a logic state zero. Upon detecting a break condition at a receiver pin, a second test signal at the TMO pin is forced to a logic state one. When logic state one is detected at the receiver pin of the NE, an automatic configuration mode at the NE is activated.
    Type: Application
    Filed: June 20, 2014
    Publication date: December 24, 2015
    Applicant: Tellabs Operations, Inc.
    Inventors: James Kelly, Michael Krupicka
  • Patent number: 9215192
    Abstract: An embodiment of the invention may comprise pairing a first switching module with a second switching module such that the first switching module is enabled to switch signals received via its first input ports and its second input ports to its first output ports and second output ports, wherein the signals received by the first input ports of the first switching module are communicated from the first output ports of the second switching module, and the signals communicated by the first output ports of the second switching module are signals received by the second input ports of the second switching module and forwarded to the first output ports of the second switching module.
    Type: Grant
    Filed: February 17, 2011
    Date of Patent: December 15, 2015
    Assignee: Tellabs Operations, Inc.
    Inventor: Bradley Ronald Kangas
  • Patent number: 9178804
    Abstract: Embodiments including methods, systems, and apparatuses for distributing, processing, and reacting to path information distributed via a service-agnostic packet fabric for the purpose of enabling path selection are disclosed. By configuring two ingress line cards to send path quality words to each other via the switch fabric, compare the path quality words, and determine whether to transmit traffic to an egress line card via the switch fabric based on the comparison of the path quality words, the embodiments enable a central switch fabric to be unaware of the paths that it carries, and enable both ingress and egress bandwidth of the switch fabric to be sized according to the facilities for which it is terminating. The switch fabric does not need to support working and protection paths simultaneously in some embodiments, allowing it to be scaled appropriately to termination facilities.
    Type: Grant
    Filed: November 12, 2010
    Date of Patent: November 3, 2015
    Assignee: Tellabs Operations, Inc.
    Inventors: Bradley R. Kangas, Anoop J. Mathew, Jai Harpalani, James N. Turner, Mark A. Richmond, Kenneth S. Mizialko
  • Patent number: 9173158
    Abstract: A communication network configured to substitute serving gateway (“SGW”), packet data network gateway (“PGW”), and mobility management entity (“MME”) with an OpenFlow network controller (“OFNC”) for packets routing between mobile devices and the Internet is disclosed. The network includes a cellular base station, a packet data network (“PDN”), and OFNC. The cellular base station provides wireless communication for user equipments (“UEs”). The PDN is able to route packet flows to their destination(s). The routing controller or OFNC manages a cluster of routers including at least one edge router via OpenFlow protocol. The OFNC, in one embodiment, establishes a routing path between the cellular base station and the PDN for an authenticated UE via a group of routers based on information obtained from an authenticating server and a charging system.
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: October 27, 2015
    Assignee: Tellabs Operations, Inc.
    Inventor: Subir Varma
  • Patent number: 9160686
    Abstract: Example embodiments of the present invention relate to increasing an aggregate capacity of a network without using a centralized switch fabric. A method and corresponding apparatus in an example embodiment of the present invention relates to increasing overall aggregate capacity of a switching system. The example embodiment includes a first switching shelf having a first predetermined aggregate capacity, and multiple second switching shelves having a second predetermined aggregate capacity. The second predetermined aggregate capacity is less than the first predetermined aggregate capacity. The example embodiment increases the overall aggregate capacity as a function of connections between the first switching shelf and the multiple second switching shelves. The shelves are interconnected with interconnection links and can be configured to connect to additional shelves as the switching system grows to larger sizes. Embodiments can increase capacity while reducing cost within a network node.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: October 13, 2015
    Assignee: Tellabs Operations, Inc.
    Inventors: Mark E. Boduch, Jonathan B. Sadler
  • Patent number: 9146826
    Abstract: Embodiments disclosed herein enable network simulation including a range of networking technologies to be scaled to include large numbers of devices under test (DUTs) even though computing resources, such as a total number of simulation hosts or IP addresses, may be limited. By enabling a network simulator to scale with limited computing resources, developers may be enabled to reduce the requirements for physical space, power, cost, and maintenance for network simulation. For example, developers may be able to determine capacity, such as a total number of DUTs that a network management system (NMS) is capable of managing, even though few simulation hosts or IP addresses may be available for simulation of the DUTs.
    Type: Grant
    Filed: March 12, 2013
    Date of Patent: September 29, 2015
    Assignee: Tellabs Operations, Inc.
    Inventors: Hammad A. Khan, Li Zou, John Chan