The Other Networks Are Ring Or Loop Networks Patents (Class 370/405)
  • Patent number: 10397823
    Abstract: For load balancing in a large-scale wireless mesh network, a device, a system and a method are provided for controlling data packet transmissions in the wireless mesh network, wherein a time slot is randomly selected within a determined answer interval for transmitting an answer responding to a received data packet.
    Type: Grant
    Filed: September 20, 2011
    Date of Patent: August 27, 2019
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Daniel Martin Gorgen, Tim Corneel Wilhelmus Schenk, Javier Perez Espina, Oscar Garcia Morchon
  • Patent number: 10261558
    Abstract: An example modular computing system may include a host unit. The host unit may include a port that includes a data bus and a power delivery bus. The system may further include a controller to populate a message delivery routing table. The message delivery routing table may include a first address for a first module directly connected to the host unit by the port and a second address for a second module indirectly connected to the host unit by the first module. The controller is to communicate with the second module across the power delivery bus based upon the message delivery routing table.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: April 16, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventor: Roger D. Benson
  • Patent number: 10185671
    Abstract: A controller is configured to transmit a broadcast write request on at least one bus. The broadcast write request includes an address and a value. A first logic module determines that the broadcast write request is targeting the first logic module. The first logic module stores the value at a first addressed register specified by the register address. The second logic module determines that the broadcast write request is targeting the second logic module. The second logic module stores the value at a second addressed register specified by the register address. The first and second logic modules are connected to the at least one bus.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: January 22, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Asif Khan, Robert Michael Johnson
  • Patent number: 10180919
    Abstract: A bus controller is configured to transmit a broadcast read request on at least one bus. The broadcast read request includes an address. A first logic module determines that the broadcast read request is targeting the first logic module. The first logic module reads a first value from a first register included in the first logic module. The first register is specified by the address included in the broadcast read request. The first value is transmitted onto the at least one bus. A second logic module determines that the broadcast read request is targeting the second logic module. The second logic module reads a second value from a second register included in the second logic module. The second register is specified by the address included in the broadcast read request. The second value is transmitted onto the at least one bus.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: January 15, 2019
    Assignee: Amazon Technologies, Inc.
    Inventors: Robert Michael Johnson, Asif Khan
  • Patent number: 10117287
    Abstract: Various methods and devices are provided to address the need for improved dual connectivity. For example, a network node (500) in a primary network includes a processing unit (501) and an interface unit (510), which includes a network interface (511) for communication with other network devices. The processing unit is communicatively coupled to the interface unit and configured to receive, from a user equipment (UE) via the interface unit, a secondary Internet Protocol (IP) address for the UE, the secondary IP address being associated with a secondary network of the UE. The processing unit is also configured to initiate via the interface unit the establishment of at least one tunnel to bridge the network node and the UE via the secondary network.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 30, 2018
    Assignee: Nokia of America Corporation
    Inventors: Krishna Balachandran, Joseph H. Kang, Kemal M. Karakayali, Kiran M. Rege
  • Patent number: 9990364
    Abstract: The present invention provides a fast and efficient way of processing structured data by utilizing an intermediate file to store the structural information. The structured data may be processed into a Binary mask Format (BMF) file which may serve as a starting point for post-processing. A tree structure built on top of the BMF file may be constructed very quickly, and also takes up less space than a DOM tree. Additionally, BMF records may reside entirely in the memory and contain structural information, allowing SAX-like sequential data access.
    Type: Grant
    Filed: December 29, 2016
    Date of Patent: June 5, 2018
    Assignee: Ximpleware, Inc.
    Inventor: Zhengyu Zhang
  • Patent number: 9667409
    Abstract: A sensor comprises a transmitter to transmit signals over a communication path, the sensor further capable to receive signals from the communication path, wherein the sensor is configured to communicate sensor data having a nibble data signal format at the transmitter in response to a trigger signal received at the sensor.
    Type: Grant
    Filed: February 21, 2014
    Date of Patent: May 30, 2017
    Assignee: Infineon Technologies AG
    Inventor: Wolfgang Scherr
  • Patent number: 9654553
    Abstract: Various exemplary embodiments relate to a method performed by a Diameter Routing Agent (DRA) for processing a Diameter message, the method including: providing alias Diameter identifiers (IDs) to peers with the same Diameter IDs; receiving a Diameter message at the DRA associated with one of the peers with the same Diameter ID; determining a correct peer of the peers with the same Diameter ID associated with the received Diameter message; setting the destination host of the received Diameter message to the aliased ID of the correct peer; and transmitting the Diameter message to the correct peer.
    Type: Grant
    Filed: November 14, 2014
    Date of Patent: May 16, 2017
    Assignee: Alcatel Lucent
    Inventor: Robert A. Mann
  • Patent number: 9602392
    Abstract: A novel method for fully utilizing the multicast or broadcast capability of a physical network is provided. The method identifies segments of the network within which broadcast traffic, multicast traffic, or traffic to unknown recipients (BUM traffic) is allowed or enabled. The identified segment encompasses parts of the network that the BUM traffic is able reach while excluding parts of the network nodes that the BUM traffic is unable to reach. Each identified segment includes network nodes that are interconnected by physical network hardware that supports BUM traffic. The method identifies multiple BUM traffic segments in a given network that each supports its own BUM traffic. The different BUM traffic segments are interconnected by physical network hardware that does not support BUM network traffic. Each identified segment is assigned an identifier that uniquely distinguishes the identified segment from other identified segments.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: March 21, 2017
    Assignee: NICIRA, INC.
    Inventors: Alexander Tessmer, Ram Dular Singh, Ganesan Chandrashekhar
  • Patent number: 9565618
    Abstract: Methods, systems and devices for an avionics mobile computer device capable of carrying out communications while moving among a plurality of inter-connected networks, and a mobile computer management device for managing moving location information of the mobile computer and transferring packets destined to the avionics mobile computer to a current location of the avionics mobile computer, as well as a mobile computer management method and a communication control method suitable for these devices.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: February 7, 2017
    Assignee: Satcom Direct, Inc.
    Inventors: Ken Bantoft, Curt Gray
  • Patent number: 9164795
    Abstract: Technologies are described herein for establishing a secure tunnel infrastructure between host computers in a hybrid network environment. A first network tunnel is established between a border device in a first network and a border device in a second network. A second network tunnel is established between a first host computer in the first network and the border device in the first network. Similarly, a third network tunnel is established between the border device in the second network and a second host computer in the second network. The networking infrastructures of the first and second networks are then configured so that network packets from the first host computer arriving at the border device in the first network through the second network tunnel are sent through the first network tunnel to the border device in the second network, and then through the third network tunnel to the second host computer.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: October 20, 2015
    Assignee: Amazon Technologies, Inc.
    Inventor: Pradeep Vincent
  • Patent number: 9143426
    Abstract: A communication apparatus is configured to include first and second cards, and a card-to-card link connecting the cards. Each card is communicably connected to another communication apparatus through a route connected to the card. One of the cards is determined to be a primary card that controls data transmission between the communication apparatus and another communication apparatus, and the other card is determined to be a secondary card controlled by the primary card. The primary card establishes a primary data-path for transmitting primary data, using one of the first and second routes connected to the primary card. The primary card further establishes a secondary data-path for transmitting secondary data, using the card-to-card link, the secondary card, and the other one of the first and second routes connected to the secondary card.
    Type: Grant
    Filed: April 9, 2010
    Date of Patent: September 22, 2015
    Assignee: FUJITSU LIMITED
    Inventors: Satoru Hirasawa, Yoshimi Sasaki, Takenari Takahashi, Takayuki Ohtsuka, Toshifumi Inoue, Kenji Fukuda
  • Patent number: 9128753
    Abstract: Technologies are described herein for establishing a secure tunnel infrastructure between host computers in a hybrid network environment. A first network tunnel is established between a border device in a first network and a border device in a second network. A second network tunnel is established between a first host computer in the first network and the border device in the first network. Similarly, a third network tunnel is established between the border device in the second network and a second host computer in the second network. The networking infrastructures of the first and second networks are then configured so that network packets from the first host computer arriving at the border device in the first network through the second network tunnel are sent through the first network tunnel to the border device in the second network, and then through the third network tunnel to the second host computer.
    Type: Grant
    Filed: March 30, 2012
    Date of Patent: September 8, 2015
    Assignee: Amazon Technologies, Inc.
    Inventor: Pradeep Vincent
  • Patent number: 9042394
    Abstract: A wireless transmission method is provided for allowing data transmission between plural wireless devices. In the wireless transmission method, each time cycle is divided into a flag time segment and a transmission time segment. The flag time segment includes plural flag time slots corresponding to respective wireless devices, and the transmission time segment includes plural transmission time slots. After the plural wireless devices are synchronized with each other, the wireless device for transmitting data issues a transmission request during the corresponding flag time slot. In response to the transmission request, a corresponding wireless device issues an assigning command during the corresponding flag time slot. The wireless device issuing the transmission request will transmit data during a transmission time slot assigned by the assigning command. In accordance with the wireless transmission method, each of the plural wireless devices has transmitting and receiving capability.
    Type: Grant
    Filed: May 23, 2012
    Date of Patent: May 26, 2015
    Assignee: PRIMAX ELECTRONICS LTD.
    Inventor: Chien-Nan Lin
  • Patent number: 8989220
    Abstract: In one embodiment, a system includes a station circuit. The station circuit includes a data layer and a transport layer. The station circuit is capable of a source mode and a destination mode. The data layer of the station circuit in source mode disassembles a source packet into one or more source parcels and sends the one or more source parcels to the transport layer. The station circuit in destination mode receives the one or more destination parcels over a ring at its transport layer, reassembles the one or more destination parcels into a destination packet, and delivers the destination packet from the transport layer to the data layer. The transport layer of the station circuit in source mode transmits the one or more source parcels over the ring. The transport layer of the station circuit in destination mode receives the one or more destination parcels over the ring.
    Type: Grant
    Filed: May 25, 2012
    Date of Patent: March 24, 2015
    Assignee: Cavium, Inc.
    Inventors: Paul G. Scrobohaci, Ahmed Shahid, Bryan W. Chin, Leo Chen
  • Patent number: 8902911
    Abstract: A system and method for interconnecting Ethernet and fiber channel is provided. The system includes a port containing an optical receiver, a port control module, a route determination module, and a connectivity module. The port control module is operably connected to the port and may perform 8B/10B encoding and decoding. The route determination module selects a route between the port control module and the Ethernet link. The connectivity module is operably connected to the port control module and to the route determination module. The connectivity apparatus may switch frames between the port control module and the Ethernet link under control of the route determination module in order to transfer Fiber Channel frames to the Ethernet link.
    Type: Grant
    Filed: February 21, 2012
    Date of Patent: December 2, 2014
    Assignee: Emulex Corporation
    Inventor: Stuart B. Berman
  • Patent number: 8856358
    Abstract: A communication system is adapted to provide access to application information on an application server utilizing a specific one of multiple radio access types. Access is provided via an access network using an access bearer. The capability of the specifically requested access bearer is sent to the application server to tailor the application information content according to the capability of the specific access bearer. The information content is then transmitted to the requesting device.
    Type: Grant
    Filed: January 6, 2003
    Date of Patent: October 7, 2014
    Assignee: Optis Wireless Technology, LLC
    Inventors: Robert Bengt Skog, Staffan Pehrson
  • Patent number: 8837346
    Abstract: Embodiments of this invention include a network communications stack for a system for communicating data over a network. A media access control (MAC) layer running on a radio processor of the communications stack at least partially processes messages received from a network, i.e., before the message is passed to a host processor. Specifically, the MAC layer includes software configured to analyze a destination address contained in the message, and determine whether the destination address contained in the message matches a destination address programmed in the MAC layer.
    Type: Grant
    Filed: June 1, 2011
    Date of Patent: September 16, 2014
    Assignee: General Electric Company
    Inventors: Bradley Richard Ree, Robert Warren Hepler, Ryan Marc LaFrance, Vernon Meadows
  • Patent number: 8660125
    Abstract: A node device in a ring transmission system in which a plurality of node devices are connected as a ring via serial links has a PHY transitioning between a normal mode and a loopback mode with timing that maintains symbol lock between an idle frame transmitted to a later serial link in the normal mode according a transmission instruction, and an idle frame from an earlier node device looped back for output to a later serial link during the loopback mode, thus performing relay processing on non-locally addressed data packets during the loopback mode.
    Type: Grant
    Filed: May 24, 2011
    Date of Patent: February 25, 2014
    Assignee: Panasonic Corporation
    Inventor: Shinichiro Nishioka
  • Patent number: 8644134
    Abstract: Techniques are described which provide mechanisms for dual-homing an access ring for virtual private wire service (VPWS) Ethernet line (E-Line) services. The mechanism may provide resiliency against access ring failures and offer a restoration time of 50 msec upon failure. A method to provide such resiliency may generally include determining, at a first ring port of an access node, a ring failure in an Ethernet ring. Upon determining the first ring port of the access node is not situated on a same side of the Ethernet ring as a node designated as a ring protection link (RPL) owner, a message is transmitted on a second ring port of the access node towards a provider edge (PE) node. The message is used to activate pseudowires (PWs) at the PE node for virtual local area networks (VLANs) of the access node.
    Type: Grant
    Filed: October 28, 2010
    Date of Patent: February 4, 2014
    Assignee: Cisco Technology, Inc.
    Inventors: Ali Sajassi, Samer M. Salam
  • Patent number: 8538567
    Abstract: Even when a system is made to have a configuration in which a plurality of transmission paths are connected to each other, a transmission-impossible time in each transmission path caused by changing a clock source to a device of a different transmission path can be shortened. In an audio signal processing system including first and second networks connected to each other through a bridge device, the bridge device operates as a slave in the first network and as a master in the second network. When the second network is reset, the bridge device starts to operate as a slave in the second network. Then, when continuous reception of an audio transmission frame that another device operating as a master in the second network has transmitted is started, the bridge device resets the first network and starts to operate as a master in the first network.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: September 17, 2013
    Assignee: Yamaha Corporation
    Inventors: Kei Nakayama, Yuki Furumoto
  • Patent number: 8520693
    Abstract: A data processing apparatus which circulates a packet on a ring bus by connecting a plurality of communication modules to the ring bus and causing each communication module to send the packet to an adjacent communication module in synchronism with a predetermined periodical signal includes a plurality of data process modules each connected to a corresponding one of the plurality of communication modules to process data held in the packet, and an input/output module connected to at least one of the plurality of communication modules to receive/output data from/to the communication module. The number of circulations of data through the ring bus, which is input from the input/output module to one of the communication modules, until the data completes a predetermined processing and is received by the input/output module is acquired. The frequency of the periodical signal is changed in accordance with the number of circulations.
    Type: Grant
    Filed: January 24, 2011
    Date of Patent: August 27, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Hirowo Inoue, Hisashi Ishikawa
  • Patent number: 8401029
    Abstract: A method for establishing a bearer for a GSM network is disclosed in embodiments of the present invention. The method includes: receiving, by a Media Gateway, a message for adding a wireless side end point, assigning an IP address and a port number for a call and transmitting a response message containing the IP address and the port number assigned for the call; acquiring, by the Media Gateway, the IP address and the port number assigned for the call by the Base Station Controller via the Mobile Switching Center Server and establishing an IP bearer with the Base Station Controller. A device and a system for establishing a bearer for a GSM network are also disclosed in embodiments of the present invention. With the present invention, a full or part path transcoder-free operation may be realized, which can avoid quality reduction and transmission delay.
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: March 19, 2013
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Shaohua Luo, Zhenhua Liu, Hao Zhang
  • Patent number: 8401684
    Abstract: In the case where an audio network system that performs transport of audio signals between a plurality of processors is constructed such that the plurality of processors each including two sets of transmission I/Fs and reception I/Fs are connected in series, and a TL frame generated by a master node is circulated along a ring transmission route formed among the processors in each fixed period, the TL frame including a plurality of storage regions for audio signals, when one of the processors is required to be the master node, the one processor resets in sequence processors which are connected on both sides thereof and processors behind the processors connected on both sides to once remove each of those processors from a ring transmission route if it belong to any ring transmission route, then incorporates the processors into a ring transmission route in which the one processor belongs to.
    Type: Grant
    Filed: August 12, 2010
    Date of Patent: March 19, 2013
    Assignee: Yamaha Corporation
    Inventor: Kei Nakayama
  • Patent number: 8390429
    Abstract: A mobile RFID (Radio Frequency Identification) system and method are provided to monitor multiple control zones of the system simultaneously through a mobile outpost monitor. The control zones included in the system are connected with each other through a data exchange interface. Each of the control zones includes a link interface connecting with a gateway of at least one RFID tracking module. The gateway connects with at least one RFID reader and a signal transmitter to receive tag information of RFID tags within the control zone, and transmits the tag information through the signal transmitter. When the mobile outpost monitor moves from one control zone to another, the mobile outpost monitor may switch to link with the signal transmitter of the gateway in the current control zone. Through the data exchange interface, the mobile outpost monitor is able to obtain the monitoring information of another control zones.
    Type: Grant
    Filed: January 23, 2009
    Date of Patent: March 5, 2013
    Assignee: Getac Technology Corporation
    Inventors: Jun-Ting Shiau, Ta-Yung Lee, Jen-Hao Hsu, Chia-Chin Yu
  • Publication number: 20130016733
    Abstract: Methods and apparatus for communicating Fibre Channel frames between a private loop device and an Ethernet link through a Fibre Channel private loop device interconnect system. In the preferred embodiments, the Fibre Channel private loop device interconnect system is a fabric or an intelligent bridging hub. In one aspect of this invention, a Fibre Channel private loop device is storage device which contains JBODsd or RAIDs. Preferably, the interconnect system includes a routing filter to filter incoming Arbitrated Loop physical addresses (ALPAs) to determine which Fibre Channel frames must attempt to be routed through the fabric. Numerous topologies of interconnect systems may be achieved.
    Type: Application
    Filed: February 21, 2012
    Publication date: January 17, 2013
    Inventor: STUART B. BERMAN
  • Patent number: 8326934
    Abstract: A method and system for remotely configuring a desktop mailbox manager. A mobile node operable to communicate within a wireless network includes a remote desktop controller to generate configuration messages for transmission to a home node at which the desktop mailbox manager is located. When reconfiguration is required, reconfiguration criteria are formulated, usually at the direction of the user. The reconfiguration criteria are then used by the remote desktop controller to create a reconfiguration message, which is addressed for delivery to the home node. A network connection is established, and the reconfiguration message is transmitted. A network server associated with the base station through which the mobile node is communicating with the network routes the message to a server associated with the home node, utilizing an appropriate gateway if necessary. The message is stored on the server until the home node establishes communication and then the message is downloaded to the home node.
    Type: Grant
    Filed: September 7, 2010
    Date of Patent: December 4, 2012
    Assignee: Research In Motion Limited
    Inventor: Anthony George Burns
  • Patent number: 8320387
    Abstract: Ring type switches 10X, 10Y that connect to two sub-rings 51, 52 are provided to maintain Ethernet communications between sub-rings even when a fault occurs in a ring type switch. By carrying out redundant control processing based on the operating status of itself and the companion in these ring type switches 10X, 10Y, one operates as the currently used system and carries out relay connections between the sub-rings 51, 52 and the other operates as a standby system and stops relay connections between the sub-rings 51, 52.
    Type: Grant
    Filed: January 25, 2010
    Date of Patent: November 27, 2012
    Assignee: Azbil Corporation
    Inventors: Wei Jiang, Atsushi Seita, Hideki Tashiro
  • Patent number: 8274919
    Abstract: Various systems and methods for implementing virtual ports within ring networks are disclosed. For example, one method involves allocating a logical port that corresponds to a first port and a second port and instantiating a spanning tree protocol instance. The first port and the second port are both assigned to a first ring network. The spanning tree protocol instance selectively blocks the logical port; however, the spanning tree protocol instance is unable to block the first port independently of blocking the second port. Events (e.g., link failures and recoveries) that occur within the ring network are communicated to spanning tree by transitioning the state of the logical port in response to receiving a ring protocol control packet. The spanning tree protocol instance initiates a bridge protocol data unit (BPDU) exchange from the logical port in response to a transition in the state of the logical port.
    Type: Grant
    Filed: September 2, 2005
    Date of Patent: September 25, 2012
    Assignee: Cisco Technology, Inc.
    Inventors: Lionel Florit, Robert W. Klessig, Pauline Shuen, Francois E. Tallet
  • Publication number: 20120224589
    Abstract: A relay station for relaying data between first and second ring networks, each of the first and the second ring networks including a plurality of stations includes a first transmission and receiving circuit transmitting and receiving data to and from the first ring network; a second transmission and receiving circuit transmitting and receiving the data to and from the second ring network; and a switch that, when a destination of the data received by the first transmission and receiving circuit is one of the stations included in the second ring network, inputs the data to the second transmission and receiving circuit, and, when a destination of the data received by the second transmission and receiving circuit is another of the stations included in the first ring network, inputs the data to the first transmission and receiving circuit.
    Type: Application
    Filed: December 23, 2011
    Publication date: September 6, 2012
    Applicant: FUJITSU LIMITED
    Inventor: Junichi SAWADA
  • Patent number: 8238358
    Abstract: Frame-transfer functional units function as a switch for transferring a frame to a destination retrieved from an FDB. In transferring a frame to a ring selecting unit, the frame-transfer functional units transfers the frame with the frame added with a header in device. RPR functional units execute processing on an RPR frame received from the other communication device or a frame from the frame-transfer functional units with ring processing functional units based on an RPR protocol. The ring selecting unit searches a switch table based on information about the header in device added to the frame with the frame-transfer functional units and the RPR functional units to transfer the frame to a retrieved destination. The ring selecting unit can distribute a frame addressed to one port to plural ports.
    Type: Grant
    Filed: March 29, 2007
    Date of Patent: August 7, 2012
    Assignee: NEC Corporation
    Inventor: Hiroshi Tanaka
  • Publication number: 20120195321
    Abstract: An apparatus comprising a chip comprising a global ring network comprising a plurality of global routers configured in a unidirectional ring network, and a plurality of local ring networks directly connected to the global ring network. A method comprising transmitting a first flit from a first router to a second router, wherein a first ring network comprises the first and second routers, and transmitting a second flit from the first router to a third router, wherein a second ring network comprises the first and third routers, wherein the first and second ring networks are in a hierarchical relationship with each other, and wherein a chip comprises the first and second ring networks.
    Type: Application
    Filed: December 31, 2011
    Publication date: August 2, 2012
    Applicant: FUTUREWEI TECHNOLOGIES, INC.
    Inventors: Rohit Sunkam Ramanujam, Sailesh Kumar, William Lynch
  • Patent number: 8223782
    Abstract: A method and apparatus for optimizing the radio bearer setup procedure is provided. Downloading new default configurations allows a mobile terminal to use the default configuration as often as possible for radio bearer setup, thereby precluding the need to broadcast any pre-defined configurations, parameters and identifiers.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: July 17, 2012
    Assignee: LG Electronics Inc.
    Inventors: Patrick Fischer, Remi Feuillette
  • Publication number: 20120155484
    Abstract: A dual homing technique for ensuring loop free transmission of traffic between telecommunication networks such as VPLS by utilizing a loop protocol in the dual homed connection. The technique also provides selective handling of VPLS data streams protected and non-protected by the dual homing loop protocol.
    Type: Application
    Filed: August 9, 2010
    Publication date: June 21, 2012
    Inventors: Andrew Sergeev, Alexander Kugel, Gidean Agmon, Rotem Cohen
  • Patent number: 8184605
    Abstract: A hierarchical directional internet-oriented ad-hoc network, defined by a software infrastructure, is composed of gateway nodes and a plurality of wireless nodes, which may be fixed or mobile, and which may act as subscribers, routers, or both. The infrastructure hierarchy is defined by the hop count of each node (distance of that node to a fixed gateway node). The software infrastructure includes two tables associated with each node in the network: the upstream routing table which provides shortest routes to fixed gateway nodes through upstream neighbors, and the downstream routing table which provides shortest routes to subscribers through downstream neighbors. These two tables are used by routing algorithms. A peer table can also be used for alternate routes. The maintenance of the aforementioned tables is performed by autonomous algorithms operating locally on each node by receiving and processing signals from their neighbors.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: May 22, 2012
    Assignee: Connectivities, LLC
    Inventors: Issac Levendel, Jacques Hara
  • Patent number: 8131871
    Abstract: A method and system for rerouting data over a local area network is provided. The method comprises defining at least one port group associated with a bridging device, each port group including interfaces linked to the bridging device. A plurality of statuses for each port group is defined, the status being dependent on the individual statuses of the interfaces linked to the bridging device. At least one target port associated with each port group, each target port relating to a path for data. The method further comprises defining an action for each status of a port group and monitoring the status of the interfaces forming part of each port group. In response to determining the status of a port group, triggering the predefined action associated with the port group status at one of the port group's target ports.
    Type: Grant
    Filed: January 12, 2006
    Date of Patent: March 6, 2012
    Assignee: Cisco Technology, Inc.
    Inventor: Christophe Paggen
  • Patent number: 8073010
    Abstract: On an optical ring network side, an optical ring transmission apparatus is provided with a first ring-side TDM device and a separately implemented first packet ring device, on a first ring side. On a client network side, the apparatus is provided with a first client-side TDM device and a first packet transceiver, which are implemented separately from the devices on the optical ring network side. The devices on the client network side can be connected to the devices on the optical ring network side through a switch section including a packet switch and a TDM switch. Further, the apparatus has a dual configuration with the provision of devices that pair up with the above-mentioned devices, such as a second packet ring device. The flexibility can be ensured by the redundant configuration and the independent implementation of the devices as described above.
    Type: Grant
    Filed: October 24, 2007
    Date of Patent: December 6, 2011
    Assignee: NEC Corporation
    Inventor: Kohei Okazaki
  • Patent number: 8031640
    Abstract: A packet transmission system enabling VLAN packet forwarding of the MAC layer at the RPR layer. An address translation table associates with a VLAN identifier a MAC address and a flag showing validity of the VLAN identifier. A flag set valid means that an own node belongs to a VLAN domain with the VLAN identifier. In a case where a received packet is a VLAN packet, a first node searches the address translation table based on the VLAN identifier for a MAC address, creates an RPR packet with the MAC address stored as an RPR destination address, and transmits the RPR packet to an RPR network. A second node searches the address translation table based on the MAC address stored in the RPR packet, and if a corresponding flag is a valid flag, regards the packet as being addressed to a VLAN to which the own node belongs, and transmits the packet to the VLAN after deleting the RPR header therefrom.
    Type: Grant
    Filed: October 2, 2006
    Date of Patent: October 4, 2011
    Assignee: Fujitsu Limited
    Inventor: Yasuyuki Mitsumori
  • Patent number: 7991352
    Abstract: A retransmission method and apparatus in a multi-hop broadband wireless communication system are provided, in which if there is a failed data block among data blocks received from a source node, a Relay Station (RS) transmits a feedback message requesting retransmission of the failed data block to the source node, transmits a successfully received data block to a destination node, receives a retransmitted data block for the failed data block from the source node, transmits the received retransmitted data block to the destination node, receives from the destination node a feedback message about data blocks transmitted to the destination node, and transmits the feedback message to the source node.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: August 2, 2011
    Assignee: Samsung Electronics Co., Ltd
    Inventors: Kyung-Joo Suh, Dae-Gyun Kim, Beom-Sik Bae, Jung-Won Kim, June Moon
  • Patent number: 7979897
    Abstract: Provided are a system and article of manufacture for bidirectional data transfer. In certain embodiments a link layer login is sent from a first port to a second port. Subsequently, an application layer login is sent from the first port to the second port to establish a first data path, wherein the first data path is from the first port to the second port. Subsequently, another application layer login is sent from the second port to the first port to establish a second data path, wherein the second data path is from the second port to the first port. In certain other embodiments, a first data path is established from a first port to a second port. A determination is made at the first port, whether the second port has a second data path established from the second port to the first port. An application layer logout is sent from the first port to the second port, in response to determining that the second port has the second data path established from the second port to the first port.
    Type: Grant
    Filed: April 22, 2008
    Date of Patent: July 12, 2011
    Assignee: International Business Machines Corporation
    Inventors: Steven Edward Klein, James Chien-Chiung Chen, Patricia Ching Lu, Minh-Ngoc Le Huynh
  • Patent number: 7974223
    Abstract: A method for communication via a ring network that includes a plurality of nodes. The method includes receiving at a first node in the ring network a data packet transmitted over a virtual private LAN service (VPLS), the data packet including an identification of the VPLS. The first node reads the identification from the data packet. Responsively to reading the identification, the first node forwards the data packet to at least one second node in the ring network that is associated with the VPLS.
    Type: Grant
    Filed: November 19, 2004
    Date of Patent: July 5, 2011
    Assignee: Corrigent Systems Ltd.
    Inventors: David Zelig, Leon Bruckman, Ronen Solomon, Uzi Khill, Gal Mor
  • Patent number: 7965725
    Abstract: A network-on-chip interconnects an array of integrated circuit resources. The network-on-chip includes at least one vertical communications ring per column of the array and at least one horizontal communications ring per row of the array. A network interface is associated with each resource of the array and operates to interface the communications rings with each other and the resource with the communications rings. A ring hop is provided at each network interface and for each communications ring thereat. Each ring hop functions as an add/drop multiplexer with respect to inserting packets onto the associated communications ring and extracting packets from the associated communications ring. Packets are communicated over the vertical/horizontal rings using a logical transport channel that flows in a cyclic manner through the communications ring without interruption.
    Type: Grant
    Filed: March 8, 2006
    Date of Patent: June 21, 2011
    Assignee: STMicroelectronics, Inc.
    Inventors: Michel Langevin, Charles Pilkington
  • Patent number: 7916740
    Abstract: An access network system, an address resolution protocol proxy method and an IP bridging forwarding method for the access network system are disclosed. The access network system comprises: one or more access network edge nodes that connect to one or more access nodes; one or more access nodes that connect to user terminals to the access network, and a reference point that is introduced between two adjacent access nodes for the access nodes interconnection. With this system, the multi-cast or broadcast flow in the network can be reduced and the communication delay and path can also be decreased. Therefore the communication bottleneck brought by BRAS/BNG can be avoided.
    Type: Grant
    Filed: January 28, 2009
    Date of Patent: March 29, 2011
    Assignee: Huawei Technologies Co., Ltd.
    Inventor: Ruobin Zheng
  • Patent number: 7898942
    Abstract: In a multi-ring network with a plurality of rings to which RPR is applied connected, high-speed failure recovery is enabled when a failure occurs between the rings. The contact nodes 700-1 and 700-3 connected to the living inter-link 505 periodically transmit and receive a KeepAlive signal to/from each other. Then, when a KeepAlive signal fails to arrive for a fixed time period, determination is made that the inter-link 505 develops a fault to broadcast-transmit an inter-link failure notification RPR-MAC frame indicative of failure occurrence on the inter-link to each node. A contact node as a transmission source of the inter-link failure notification RPR-MAC frame and each node having received the inter-link failure notification RPR-MAC frame immediately flush learning contents of their own learning data bases. A contact node connected to the spare inter-link 506 switches the spare inter-link 506 to a forwarding state.
    Type: Grant
    Filed: March 31, 2006
    Date of Patent: March 1, 2011
    Assignee: NEC Corporation
    Inventors: Kazuo Takagi, Masahiro Sakauchi, Daisaku Ogasahara
  • Patent number: 7872990
    Abstract: A method and system for providing a multi-level interconnection network is provided. A multi-level interconnection network comprises basic cells that are aggregated into higher level cells at each level of the network. At the first level, the basic cells are aggregated into first level cells. Each first level cell is an aggregation of a number of basic cells that is one more than the number of devices in a basic cell. The basic cells of a first level cell are fully connected; that is, each basic cell has a first level link or connection to each other basic cell. In a first level cell, each device of a basic cell has a first level link to each other basic cell. The multi-level interconnection network has higher level cells that are aggregations of lower level cells in a similar manner.
    Type: Grant
    Filed: April 30, 2008
    Date of Patent: January 18, 2011
    Assignee: Microsoft Corporation
    Inventors: Chuanxiong Guo, Songwu Lu, Lei Shi, Kun Tan, Haitao Wu, Yongguang Zhang
  • Patent number: 7873773
    Abstract: A circuit arrangement, method and apparatus utilize communication links that are selectively configurable to operate in both unidirectional and bidirectional modes to communicate data between multiple nodes that are interconnected to one another in a daisy chain configuration. As a result, in many instances communications may be maintained with nodes located both before and after a discontinuity in a daisy chain configuration.
    Type: Grant
    Filed: April 26, 2007
    Date of Patent: January 18, 2011
    Assignee: International Business Machines Corporation
    Inventors: Gerald Keith Bartley, John Michael Borkenhagen, Robert Allen Drehmel, James Anthony Marcella
  • Patent number: 7831700
    Abstract: A distributed path computation element based system in a multi-layer network. The system comprises at least one higher-layer path computation element, and at least one lower-layer path computation element, adapted to provide dynamic multi-layer path computations; at least one higher-layer traffic engineering database, and at least one lower-layer traffic engineering database, adapted to provide multi-layer traffic engineering label switched paths, while maintaining layer-specific traffic engineered database in a distributed fashion; and at least one path computation element agent, adapted to provide static optical layer path provisioning, and reconfiguration of optical layer label switched paths in cooperation with the at least one lower-layer path computation element.
    Type: Grant
    Filed: October 16, 2006
    Date of Patent: November 9, 2010
    Assignee: Futurewei Technologies, Inc.
    Inventor: Young Lee
  • Patent number: 7822055
    Abstract: The Fibre Channel Credit Extender (FCCE) (600) is a network device that is disposed between and connected to an end node (210) and an optical repeater (220). The FCCE (600) contains as many buffer credits as necessary, to solve bandwidth problems in a network. In a situation where maximum bandwidth is required in both directions of a link, the FCCE (600) breaks a single logical link into three physically separated “linklets.” The short-distance linklets attain maximum bandwidth by use of the existing buffer credits of the end nodes. The long-distance linklet attains maximum bandwidth by use of very high receive buffer credits in the FCCEs (600). In this way, only those links that need maximum bandwidth over distances not covered by end-node credit counts need be attached to an FCCE (600). The FCCE (600) contains the optical repeater to gain distance on that link, and contains high credit count receive buffers to gain bandwidth on the link.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: October 26, 2010
    Assignee: QLogic Switch Products, Inc.
    Inventors: William R. George, Steven M. Betker
  • Patent number: 7818018
    Abstract: An ad hoc network with distributed hierarchical scheduling is disclosed. In one aspect, stations in a network mesh detect interfering neighbor stations and form interference lists. Stations transmit their interference lists. Scheduling stations schedule allocations for child stations in response to interference lists, received remote allocations, or a combination thereof. Coordination messages are transmitted including frame structure, allocations, and interference lists, among others. In another aspect, an ad hoc mesh network may be organized into a tree topology. In an example wireless backhaul network, this matches traffic flow. Distributed, hierarchical scheduling is provided where parents schedule communication with children while respecting already scheduled transmissions to/from interferers and to/from interferers of their respective children.
    Type: Grant
    Filed: January 26, 2005
    Date of Patent: October 19, 2010
    Assignee: Qualcomm Incorporated
    Inventors: Sanjiv Nanda, Jay Rodney Walton
  • Patent number: 7809006
    Abstract: An approach to introducing adaptive routing into a communication approach for passing messages between nodes over links between the nodes includes forming virtual channels over the links of the system and defining a deterministic routing function over the virtual channels such that the deterministic routing function is deadlock free. Adaptive routing is then permitted at nodes using the existing virtual channels by introducing a constraint on the available virtual channels used to forward communication that arrives at a node for a particular destination. The constraint on the virtual channels is such that the adaptive system is also deadlock free.
    Type: Grant
    Filed: August 12, 2008
    Date of Patent: October 5, 2010
    Assignee: D. E. Shaw Research, LLC
    Inventor: Brian Patrick Towles