Using Oam (operation, Administration And Maintenance) Cells Patents (Class 370/236.2)
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Patent number: 9019814Abstract: In general, techniques are provided for receiving a first control plane message that indicates the reachability of the second PE network device as a designated forwarder in an Ethernet segment. The techniques include receiving a second control plane message comprising information that indicates, in the event of a network failure at the second PE router, that the third PE network device of the plurality of PE network devices is the designated forwarder in the layer two segment. The techniques also include forwarding layer two frames to the second PE network device identified as the designated forwarder in the layer two segment; and responsive to determining a network failure at the second PE network device, configuring, based at least in part on the second control plane message, a forwarding plane of the first PE network device to forward layer two frames to the third PE network device as the designated forwarder.Type: GrantFiled: August 5, 2013Date of Patent: April 28, 2015Assignee: Juniper Networks, Inc.Inventors: Satya Ranjan Mohanty, Wen Lin, John E. Drake
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Patent number: 9007917Abstract: After statically provisioned paths are created through an Ethernet network, trunks may be created to extend along those paths. The trunks extend between pairs of NNI interfaces on either end of the path, and Ethernet OAM may be run over the trunks to detect connectivity along the paths. Service instances and service groups may be provisioned over particular paths through the network. Each service instance/service group is associated with a trunk and the Ethernet OAM service on the trunk may be used to provide Ethernet connectivity OAM for the service instance/service group. Upon detection of a failure on the trunk, the service instances/service groups associated with the trunk may be caused to failover to an alternate path through the network. Thus, a single Ethernet OAM service instance may be used to provide connectivity verification so that connectivity detection does not need to be performed on each individual service instances/service group.Type: GrantFiled: May 1, 2014Date of Patent: April 14, 2015Assignee: Rockstar Consortium US LPInventor: John Osswald
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Patent number: 8995294Abstract: Methods and apparatus are provided for a base station to assign to a UE communicating with the base station a number of coded control information symbols being transmitted with coded data information symbols during a transmission time interval by the UE. At least one offset value is assigned to the UE. A size of data is assigned to the UE. The base station transmits information regarding the at least one offset value to the UE. The base station transmits information regarding the size of data to the UE. The number of coded control information symbols assigned to the UE for transmission of control information is determined based on the size of data and the at least one offset value. The control information includes at least one of CQI, ACK/NAK, PMI, and RI.Type: GrantFiled: April 23, 2012Date of Patent: March 31, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Aris Papasakellariou, Joon-Young Cho
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Patent number: 8982705Abstract: A transmission control apparatus includes: a communication unit communicating with each of communication apparatuses, which are included in a communication system in which communication is executed via one relay apparatus, via the relay apparatus; a determination unit determining, as a transmission apparatus transmitting content data indicating a content to be transmitted, the apparatus with higher transmission quality between the apparatus and the relay apparatus in the communication system based on quality information of each communication apparatus, which is received by the communication unit and includes information regarding the transmission quality between the relay apparatus and the communication apparatus; and a transmission control unit allowing the transmission apparatus determined by the determination unit to concurrently transmit the content data indicating the content to the respective apparatuses of the communication system excluding the transmission apparatus.Type: GrantFiled: April 15, 2011Date of Patent: March 17, 2015Assignee: Sony CorporationInventor: Koichiro Watanabe
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Patent number: 8971390Abstract: A communication device includes an application data interface, a first communication layer and a physical media interface. The first communication layer includes a first entity configured to process application data and a second entity configured to process operations, administrations and maintenance data. The communication device further includes a switching device. In a first power mode, the switching device couples the application data interface to the first entity of the first communication layer. In a second power mode, the switching device couples the application data interface to the second entity of the first communication layer.Type: GrantFiled: June 14, 2010Date of Patent: March 3, 2015Assignee: Infineon Technologies AGInventor: Dietmar Schoppmeier
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Patent number: 8964563Abstract: A method performed by a network element implementing an OpenFlow controller, the OpenFlow controller including an operations, administration and management (OAM) module. The OAM module services an OAM function request in a network implementing OpenFlow. The method requests that a subset of OpenFlow switches in the network report metrics for an OpenFlow data flow to provide the OAM module with information for executing the requested OAM function.Type: GrantFiled: October 21, 2011Date of Patent: February 24, 2015Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: David Jocha, Andras Kern
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Publication number: 20150049601Abstract: Novel tools and techniques for providing network state information to customer equipment. In some embodiments, an operations, administration, and management (“OAM”) server might determine a status of a network connection between at least two network devices, might generate state information indicating the determined status of the network connection, and might send the state information to one or more customer equipment, using in-band signaling over a band between the at least two network devices. The state information might include one or more alarms that indicate one or more of a receive path error, a transmit path error, or a performance issue error (which might indicate at least one of jitter, delay, frame loss, peak actual throughput, or average actual throughput). The OAM server might be disposed or embodied within at least one of a customer equipment, a user network interface device, a network interface device, or a server over a network.Type: ApplicationFiled: August 14, 2014Publication date: February 19, 2015Inventor: Michael K. Bugenhagen
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Patent number: 8953456Abstract: Maintenance entities may be defined between customer and provider flow points to allow performance management to take place on an Ethernet network. The maintenance entities may be defined for access link, intra-domain, and inter-domain, and may be defined on a link or service basis. The maintenance entities may be used to monitor performance within a network or across networks, and may be used to monitor various performance parameters, such as frame loss, frame delay, frame delay variation, availability, errored frame seconds, service status, frame throughput, the number of frames transmitted, received or dropped, the status of a loopback interface, the amount of time a service has been unavailable, and many other parameters. Several management mechanisms may be used, and the measurements may be collected using a solicited collection method, in which a response is required and collected, or an unsolicited collection method in which a response is not required.Type: GrantFiled: March 14, 2011Date of Patent: February 10, 2015Assignee: Rockstar Consortium US LPInventors: Dinesh Mohan, Marc Holness
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Patent number: 8948744Abstract: A spatio-temporal random voting scheme is provided that incorporates location distribution, spatial randomness, and temporal randomness in the collection of information from a plurality of sensing devices within the cognitive network. The region is divided into a plurality of sectors, where each sector is a portion of the region. A subset of sectors is selected from the plurality of sectors in the region to provide spatial randomness. A device is randomly selected from each sector in the subset of sectors to provide additional spatial randomness to the information collection process. Temporal randomness may be introduced by randomly selecting a timeslot within a sensing window period in which devices are to scan a frequency spectrum band to determine if a signal energy above a threshold is detected. Sensing reports are then collected from the selected sensing devices and used to determine whether the frequency spectrum band is available or in use.Type: GrantFiled: June 12, 2013Date of Patent: February 3, 2015Assignee: QUALCOMM IncorporatedInventors: Yong Jin Kim, Lakshminath Reddy Dondeti, Stephen Jay Shellhammer, Wenyi Zhang
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Patent number: 8934343Abstract: A method and apparatus for Ethernet data compression enables the size of Ethernet frames to be reduced. Compression and decompression of Ethernet frames occur by the Ethernet network elements, rather than by user computers or end devices that transmit data on the Ethernet network. A new EtherType value may be used to identify the type of compressed Ethernet frames and optionally the type of mechanism used to compress the payload of Ethernet frames. The new EtherType may be inserted into a newly assembled frame ahead of the original EtherType. Alternatively, the new EtherType may replace the original EtherType and a short subheader may be used to identify the original EtherType. Out-of-band network signaling by the Ethernet control plane may also be used to determine whether frames are to be compressed and decompressed over controlled Ethernet links and tunnels, with or without use of the new EtherType.Type: GrantFiled: January 25, 2013Date of Patent: January 13, 2015Assignee: Rockstar Consortium US LPInventor: Phil Wang
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Patent number: 8923132Abstract: A method of establishing a service operations administration and maintenance (OAM) session between an originator and a reflector in a communication network includes continuously monitoring, by the reflector, any test packets transmitted by the originator. The originator transmits to the reflector, at a time indicated by a first timestamp, a test packet. The reflector receives the test packet at a time indicated by a second timestamp and generates a unique flow identifier that identifies the reflector. The reflector transmits the test packet to the originator. The reflector assigns a sequence number to the test packet. The originator receives the test packet at a time indicated by a fourth timestamp. The reflector stores the unique flow identifier at least for the duration of the OAM session.Type: GrantFiled: February 20, 2014Date of Patent: December 30, 2014Assignee: Accedian Networks Inc.Inventor: Anders Wallman
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Patent number: 8902757Abstract: A network apparatus includes a customer network portion having a customer premises equipment (CPE) bridge configured to connect to internal network entities of the customer network portion and to edge bridges of a provider network portion interconnecting separate customer network portions. The CPE bridge is configured to determine a transparent local area network service (TLS) for a packet received from one of the internal network entities based on a media access control (MAC) address of a destination of the packet in a different separate customer network portion. The CPE bridge is also configured to modify the packet to indicate the determined TLS, for the provider network portion to utilize to transmit the packet based on the determined TLS to a second CPE bridge associated with the destination, without the provider network utilizing the destination MAC address.Type: GrantFiled: June 13, 2011Date of Patent: December 2, 2014Assignee: Tejas Networks LtdInventor: Hayim Porat
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Patent number: 8897308Abstract: A node according to the present invention is used in an MPLS (Multi Protocol Label Switching) network, and the node includes an input unit which receives an OAM (Operation Administration and Maintenance) frame including TTL (Time To Live) from outside of the node and an output unit which transmits an OAM frame to outside of the node, wherein the input unit sets the TTL to a specific value and transmits the received OAM frame to the output unit in case a termination destination which an OAM frame received from outside indicates is the node and the received OAM frame is to be transmitted to the output unit and the output unit terminates an OAM frame transmitted from the input unit.Type: GrantFiled: November 2, 2010Date of Patent: November 25, 2014Assignee: NEC CorporationInventors: Zhenlong Cui, Hiroyuki Takagi, Masaki Umayabashi, Kazuo Takagi, Akira Sakurai, Hiroshi Tanaka
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Patent number: 8873390Abstract: Under the present invention, the performance of a set of system resources is monitored in response to incoming request traffic. When a system resource is approaching an overload condition, a corrective action is identified and implemented. Overload thresholds for each system resource and appropriate corrective actions are contained within a management policy. Based on a performance history of the corrective actions, the management policy can be changed/revised.Type: GrantFiled: May 23, 2011Date of Patent: October 28, 2014Assignee: International Business Machines CorporationInventors: Jeffrey S. Chase, Ronald P. Doyle, David Louis Kaminsky, David M. Ogle, Richard D. Telford
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Patent number: 8873397Abstract: A transmission control apparatus includes: a communication unit communicating with each of communication apparatuses, which are included in a communication system in which communication is executed via one relay apparatus, via the relay apparatus; a determination unit determining, as a transmission apparatus transmitting content data indicating a content to be transmitted, the apparatus with higher transmission quality between the apparatus and the relay apparatus in the communication system based on quality information of each communication apparatus, which is received by the communication unit and includes information regarding the transmission quality between the relay apparatus and the communication apparatus; and a transmission control unit allowing the transmission apparatus determined by the determination unit to concurrently transmit the content data indicating the content to the respective apparatuses of the communication system excluding the transmission apparatus.Type: GrantFiled: April 15, 2011Date of Patent: October 28, 2014Assignee: Sony CorporationInventor: Koichiro Watanabe
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Patent number: 8861371Abstract: A method may include receiving, by a first Ethernet interface, a message from a remote second Ethernet interface via an Ethernet operation, administration, or management (OAM) channel. The first Ethernet interface may determine whether the message includes a request for status information regarding an identified higher layer service. The first Ethernet interface may determine, in response to the message, a current status of the identified higher layer service. A response message may be generated to include the current status. The response message is transmitted from the first Ethernet interface to the remote second Ethernet interface via the Ethernet OAM channel.Type: GrantFiled: November 21, 2011Date of Patent: October 14, 2014Assignee: Verizon Patent and Licensing Inc.Inventors: Roman Krzanowski, Te Sheng Lin
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Patent number: 8854975Abstract: A shared (proxy) OAM session is performed in a packet-based network on behalf of a plurality of connections. First and second connections are each routed between respective nodes of the network for carrying data traffic. The second connection shares a portion of the routing of the first connection. The shared OAM session is performed along a path which is co-routed with at least part of the shared portion of the routing of the first connection and the second connection. Failure notification signalling is propagated to an endpoint node of each of the first and second connections when the shared OAM session indicates a failure has occurred. The use of a shared OAM session reduces processing at nodes and reduces OAM traffic. Each connection can be a trunk, such as a PBT/PBB-TE trunk, or a service carried within a trunk.Type: GrantFiled: November 14, 2012Date of Patent: October 7, 2014Assignee: Rockstar Consortium US LPInventors: Robert Friskney, Simon Parry, David Allan
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Patent number: 8842692Abstract: Various embodiments are directed to changes in protocols, e.g., an enhanced 802.11 based protocol, that enables SIR based yielding and/or improves spatial reuse in networks, e.g., 802.11 based networks. Various methods and apparatus enable multiple devices using an 802.11 based protocol to communicate, e.g., transmit, during the same time interval. In various embodiments, the methods and apparatus use transmission timing constraints and/or Signal Interference Ratio (SIR) based yielding to avoid excessive interference between devices within communication range of each other.Type: GrantFiled: September 6, 2011Date of Patent: September 23, 2014Assignee: QUALCOMM IncorporatedInventors: Xinzhou Wu, Sanjay Shakkottai, Junyi Li
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Publication number: 20140241165Abstract: After statically provisioned paths are created through an Ethernet network, trunks may be created to extend along those paths. The trunks extend between pairs of NNI interfaces on either end of the path, and Ethernet OAM may be run over the trunks to detect connectivity along the paths. Service instances and service groups may be provisioned over particular paths through the network. Each service instance/service group is associated with a trunk and the Ethernet OAM service on the trunk may be used to provide Ethernet connectivity OAM for the service instance/service group. Upon detection of a failure on the trunk, the service instances/service groups associated with the trunk may be caused to failover to an alternate path through the network. Thus, a single Ethernet OAM service instance may be used to provide connectivity verification so that connectivity detection does not need to be performed on each individual service instances/service group.Type: ApplicationFiled: May 1, 2014Publication date: August 28, 2014Applicant: Rockstar Consortium US LPInventor: John OSSWALD
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Patent number: 8817629Abstract: A method for routing-assisted traffic monitoring includes providing a set of flows, each flow having an associated ingress routing device and an associated egress routing device. A controller determines a micro-flowset routing for the set of flows, the micro-flowset routing defining which of a set of directed links connecting a plurality of routing devices are used to route each of the flows from the respective ingress routing device to the respective egress routing device. The controller transmits flow information to at least a first routing device of the plurality of routing devices according to the micro-flowset routing, the flow information defining which of the set of directed links are to be used to route at least one flow entering the first routing device to a second routing device of the plurality of routing devices.Type: GrantFiled: March 3, 2011Date of Patent: August 26, 2014Assignees: Deutsche Telekom AG, The Regents of the University of CaliforniaInventors: Srinivasan Seetharaman, Saqib Raza, Chen-Nee Chuah, Guanyao Huang, Jatinder Pal Singh
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Publication number: 20140233394Abstract: A first switch in a MPLS network receives a plurality of packets. The plurality of packets are part of a pair of flows. The first switch performs a packet prediction learning algorithm on the first plurality of packets and generates packet prediction information. The first switch communicates the packet prediction information to a Network Operation Center (NOC). In response, the NOC communicates the packet prediction information to a second switch within the MPLS network utilizing OpenFlow messaging. In a first example, the NOC communicates a packet prediction control signal to the second switch. In a second example, a packet prediction control signal is not communicated. In the first example, based on the packet prediction control signal, the second switch determines if it will utilize the packet prediction information. In the second example, the second switch independently determines if the packet prediction information is to be used.Type: ApplicationFiled: April 28, 2014Publication date: August 21, 2014Applicant: NETRONOME SYSTEMS, INC.Inventors: Nicolaas J. Viljoen, Sandra Scott-Hayward
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Patent number: 8804720Abstract: In general, techniques are described for simplifying admission control signaling between subscriber devices, access nodes, and service edge routers to facilitate subscriber-specific admission control for multicast streams. In one example, a service edge router receives a service request and accesses a subscriber profile to determine whether the requesting subscriber is authorized to receive the service. Upon authorization, the service edge router returns the service request to the access node in a substantially similar form in which the service request was received. The access node receives the service request on a service edge router-facing interface, indicating the service edge router has granted authorization for the subscriber device to receive multicast traffic associated with the multicast group identified within the service request.Type: GrantFiled: December 22, 2010Date of Patent: August 12, 2014Assignee: Juniper Networks, Inc.Inventors: George Rainovic, Chandra Pandey
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Patent number: 8792352Abstract: The present invention provides improved methods and devices for managing network congestion. Preferred implementations of the invention allow congestion to be pushed from congestion points in the core of a network to reaction points, which may be edge devices, host devices or components thereof. Preferably, rate limiters shape individual flows of the reaction points that are causing congestion. Parameters of these rate limiters are preferably tuned based on feedback from congestion points, e.g., in the form of backward congestion notification (“BCN”) messages. In some implementations, such BCN messages include congestion change information and at least one instantaneous measure of congestion. The instantaneous measure(s) of congestion may be relative to a threshold of a particular queue and/or relative to a threshold of a buffer that includes a plurality of queues.Type: GrantFiled: May 5, 2011Date of Patent: July 29, 2014Assignee: Cisco Technology, Inc.Inventors: Davide Bergamasco, Andrea Baldini, Valentina Alaria, Flavio Bonomi, Rong Pan
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Patent number: 8792353Abstract: A first set of frames is received in a data flow and tagged with respective serial numbers identifying an ordering of frames in the first set. The tagged first set is forwarded to a general processor for processing prior to being sent to a remote network element. A data flow policy is received from the general processor based on processing of the first set. A second set of frames of the data flow are received subsequent to forwarding the first set to the general processor. It can be verified, based on the assigned serial numbers, that each frame in the first set has been sent to the remote network element prior to sending frames in the second set. The second set is processed and sent to the remote network element by the network processor, bypassing the general processor, based on the data flow policy.Type: GrantFiled: June 14, 2011Date of Patent: July 29, 2014Assignee: Cisco Technology, Inc.Inventors: Bhagatram Yaugand Janarthanan, Robert A. Mackie, Farhad P. Sunavala, Walter Dixon
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Patent number: 8792356Abstract: Information associated with a communication is gathered at a switching point during the routing process to determine subscriber metric information associated with an active service identifier. The information relates to the originator of the communication and the target. The information is compared to a provider database to determine a carrier originally associated with the active service identifier. The information is then compared to a porting database to determine if the active service identifier was ported, and if so, to which carrier the active service identifier was ported. A determination can then be made regarding which carrier is associated with the active service identifier. Various systems and methods may be used to determine a number of subscribers, a number of new subscribers, and a number of disconnected subscribers for a given carrier in a given market.Type: GrantFiled: March 1, 2012Date of Patent: July 29, 2014Assignee: AT&T Mobility II LLCInventors: Gregory Evan Mishkin, Francis B. Linnane, Jeffrey T. Johnson, Nancy Florence Burton
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Patent number: 8787396Abstract: A network includes a first switching domain having a distributed fabric comprised of interconnected standalone switches. The standalone switches communicate with each other in accordance with a packet-based distributed fabric protocol. A second switching domain has a plurality of cell-based switches in communication with a cell-based switch fabric. The cell-based switches communicate with each other through the cell-based switch fabric in accordance with a cell-based distributed fabric protocol. One of the cell-based switches is coupled by a communication link to one of the standalone switches of the first switching domain. The second switching domain includes a server device coupled to one of the cell-based switches.Type: GrantFiled: October 4, 2012Date of Patent: July 22, 2014Assignee: International Business Machines CorporationInventors: Sushma Anantharam, Nirapada Ghosh, Keshav G. Kamble, Dar-Ren Leu, Chandarani J. Mendon, Vijoy A. Pandey, Nandakumar Peethambaram
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Patent number: 8762510Abstract: A common management system is configured for use in an antenna system that distributes radio frequency signals for a first wireless communication service provider and a second wireless communication service provider using the same distribution network. The common management system includes a software element and an interface to communicatively couple the software element to: a first tenant network management system operated by the first wireless communication service provider, a second tenant network management system operated by the second wireless communication service provider, and entities within the antenna system. The software element is configured to receive control messages sent from the first tenant network management system and to receive control messages sent from the second tenant network management system. The software element is further configured to forward control messages to entities within the antenna system.Type: GrantFiled: June 27, 2011Date of Patent: June 24, 2014Assignee: ADC Telecommunications, Inc.Inventors: John Sabat, Jr., Jeffrey R. Millar
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Patent number: 8737228Abstract: Flow control in a data center Ethernet (DCE) network is managed between a source node and a destination node separated by an extended distance. An initiation sequence between the source node and the destination node is intercepted. The imitation sequence is for determining buffer credits available for receiving packets in the source node and the destination node. Replies are generated to the source node and the destination node indicating buffer credits available in at least one extended data interface interspersed between the source node and the destination node. The initiation sequence is completed based on the replies from the extended data interface.Type: GrantFiled: September 27, 2007Date of Patent: May 27, 2014Assignee: International Business Machines CorporationInventors: Casimer DeCusatis, Thomas A. Gregg
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Patent number: 8730815Abstract: A node (110) for an MPLS telecommunications network has interfaces (100) for OAM information exchange relating to a path for data traffic, between first and second other nodes each operating according to different OAM state machines for OAM information exchange. An OAM state machine mapper (120) maps the states of either of the different OAM state machines of the first and second other nodes into states recognized by the other of the different OAM state machines. OAM information exchange is according to either the first or the second OAM state machine and according to states mapped from the other of the OAM state machines, to support the path for data traffic through the node. By such mapping of the different states OAM information can be exchanged across corresponding boundaries and so paths no longer need to be terminated at the boundary to enable end to end operations.Type: GrantFiled: April 27, 2011Date of Patent: May 20, 2014Assignee: Telefonaktiebolaget LM Ericsson (publ)Inventors: Antonella Sanguineti, Riccardo Martinotti, Raoul Fiorone
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Patent number: 8730814Abstract: Communication network connection failure protection methods and systems are disclosed. Control information is communicated in a communication network, and causes network elements of the communication network to establish connection monitoring for respective segments of the network connection. Connection monitoring information which is communicated on the segments allows failures such as loss of continuity to be detected and reported. Responsive to an indication of a failure on a segment, the segment on which the failure occurred is identified, and the network connection can be rerouted around that segment.Type: GrantFiled: May 25, 2005Date of Patent: May 20, 2014Assignee: Alcatel LucentInventors: Peter Roberts, Carl Rajsic
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Patent number: 8718018Abstract: A user equipment (UE) is provided which reduces uplink signaling overhead in the process of reporting inter-frequency measurement results over a RACH. For measurement reporting, the UE receives an SIB including a cell information list for non-used frequency cells and a threshold from an RNC, compares signal strengths of signals received from the non-used frequency cells with the threshold, and acquires at least one inter-frequency cell ID indicating at least one non-used frequency cell having signal strength exceeding the threshold from the cell information list. The at least one inter-frequency cell ID is included in a RACH message as measurement result information for the at least one non-used frequency cell, and transmitted to the RNC. The RNC determines that the cell corresponding to the inter-frequency cell ID has signal strength exceeding the threshold.Type: GrantFiled: September 14, 2012Date of Patent: May 6, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Kyeong-In Jeong, Gert Jan Van Lieshout, Himke Van Dervelde, No-Jun Kwak
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Patent number: 8711708Abstract: A method of establishing a service operations administration and maintenance (OAM) session between an originator and a reflector in a communication network includes continuously monitoring, by the reflector, any test packets transmitted by the originator. The originator transmits to the reflector, at a time indicated by a first timestamp, a test packet. The reflector receives the test packet at a time indicated by a second timestamp and generates a unique flow identifier that identifies the reflector. The reflector transmits the test packet to the originator. The reflector assigns a sequence number to the test packet. The originator receives the test packet at a time indicated by a fourth timestamp. The reflector stores the unique flow identifier at least for the duration of the OAM session.Type: GrantFiled: July 24, 2012Date of Patent: April 29, 2014Assignee: Accedian Networks Inc.Inventor: Anders Wallman
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Patent number: 8699353Abstract: A system and method for propagating fault information in an Ethernet OAM network having multiple levels of OAM domains. An Alarm Indication and Suppression (AIS) frame is generated by a Maintenance Intermediate Point (MIP) node upon detecting a fault condition in a first OAM domain, which is transmitted to one or more Maintenance End Points (MEPs) of the first OAM domain. Upon receiving the AIS frames, the MEP nodes are operable generate another AIS frame for propagating to an adjacent higher level second OAM domain. Responsive to the AIS frame from the lower level first OAM domain, any alarms caused in the second OAM domain due to the fault condition in the first OAM domain are suppressed.Type: GrantFiled: November 19, 2010Date of Patent: April 15, 2014Assignee: Alcatel LucentInventors: David Elie-Dit-Cosaque, Kamakshi Sridhar, Maarten Petrus Joseph Vissers, Tony Van Kerckhove
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Patent number: 8693338Abstract: An exemplary object of the present invention lies in a point of providing a technology capable of measuring a transmission quality of an Ethernet network in order to utilize Ethernet as carrier-grade communication. The present invention includes an error bit number measurer for measuring the number of error bits that have occurred for a frame of Ethernet, being a target of monitoring, within a monitoring period, a transmitted bit number measurer for measuring the number of total transmitted bits of Ethernet frames that a device facing it has transmitted within the foregoing monitoring period, and a bit error rate operator for obtaining a bit error rate of a transmission path by employing a measurement result by the foregoing error bit number measurer and the foregoing transmitted bit number measurer.Type: GrantFiled: March 2, 2009Date of Patent: April 8, 2014Assignee: NEC CorporationInventors: Ryuichi Ikematsu, Hiroyuki Takagi, Kazuo Takagi, Zhenlong Cui
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Patent number: 8681632Abstract: Exemplary carrier Ethernet service bandwidth allocation systems and methods are disclosed herein. An exemplary method includes a carrier Ethernet service system 1) receiving an Ethernet layer operation, administration, and management (“OAM”) protocol based message provided by a customer premises device to a network interface device over a user network interface (“UNI”), the Ethernet layer OAM protocol based message including a request to adjust an amount of bandwidth allocated to a carrier Ethernet service provided by the Ethernet service system to the customer premises device, and 2) adjusting, in response to the request, the amount of bandwidth allocated to the carrier Ethernet service. Corresponding methods and systems are also disclosed.Type: GrantFiled: January 30, 2012Date of Patent: March 25, 2014Assignee: Verizon Patent and Licensing Inc.Inventors: Michael U. Bencheck, Matthew W. Turlington, Scott R. Kotrla, William A. Bjorkman, Christopher N. DelRegno
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Publication number: 20140078905Abstract: An apparatus comprising a node configured to transmit operation, administration, and maintenance (OAM) connectivity frames, wherein the node adds an impairment notification indication to some, but not all of OAM connectivity frames transmitted by the node, wherein the impairment notification indication indicates the node's desire to receive notification of an impairment condition along the path. A network component comprising a receiver unit configured to receive multiprotocol label switching (MPLS) Ping frames, a circuit logic configured to add a downstream link impairment indication to responses to the MPLS-Ping frames, wherein the downstream link impairment indication comprises a type and a severity level for a path impairment condition, and a transmitter unit configured to transmit the responses to the transmitted MPLS-Ping frames.Type: ApplicationFiled: November 21, 2013Publication date: March 20, 2014Applicant: FUTUREWEI TECHNOLOGIES, INC.Inventor: Linda Dunbar
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Patent number: 8630166Abstract: A ring network with plural network relay devices connected in a ring shape includes first and second control ports to be transitioned into either a forwarding state that permits relaying information, or a blocking state that prohibits relaying information; and a ring protocol control unit for transmitting connection confirmation information indicative of communications being possible between the first and the second control port, from the first to the second control port, and from the second to the first control port at a predetermined time interval, or for, in the event that the first or the second control port does not receive the connection confirmation information from the second or the first control port, transmitting failure information indicative of communications being not possible between the first and the second control port, from the first to the second control port, or from the second to the first control port.Type: GrantFiled: March 4, 2010Date of Patent: January 14, 2014Assignee: Hitachi Cable, Ltd.Inventors: Hitoshi Kuwata, Koichiro Seto
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Patent number: 8627137Abstract: In one embodiment, a network device may detect a data plane critical fault condition, while a corresponding control plane is not experiencing a critical fault condition. In response to a network device based critical fault condition, the network device may activate and advertise an increased and expensive usable metric for each network interface of the network device. On the other hand, in response to an interface based critical fault condition, the network device may activate and advertise an increased and expensive usable metric for one or more particular network interfaces of the interface based critical fault, and signals, over the control plane to a corresponding network device at an opposing end of each particular network interface of the interface based critical fault, a request to activate and advertise an increased and expensive usable metric at the opposing end of each particular network interface.Type: GrantFiled: September 16, 2010Date of Patent: January 7, 2014Assignee: Cisco Technology, Inc.Inventors: Nikunj R. Vaidya, Pradosh Mohapatra, Arun Satyanarayana, Pankaj Bhagra, Clarence Filsfils
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Patent number: 8625432Abstract: A network includes a number of nodes interconnected by communication links. The nodes include pairs of nodes configured as maintenance end points. Each maintenance end point of each pair is configured to transmit continuity check messages to the other maintenance end point of the pair. Each maintenance end point is arranged to transmit a continuity check message according to a schedule such that an impact of transmission of the continuity check message on the network resources is reduced.Type: GrantFiled: December 4, 2008Date of Patent: January 7, 2014Assignee: Telefonaktiebolaget L M Ericsson (publ)Inventors: James Hayden, Jonathan Oldershaw
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Patent number: 8619554Abstract: An interconnect block for a data processing apparatus, said interconnect block being operable to provide data routes via which one or more initiator devices may access one or more recipient devices, said interconnect block comprising: a first and a second portion; said first portion comprising at least one initiator port for communicating with one of said initiator devices, and at least one recipient port for communicating with one of said recipient devices; said second portion comprising at least two recipient ports for communicating with at least two recipient devices, said second portion being connected to said first portion via at least two parallel connecting routes, said at least two recipient ports being connectable to said at least two parallel connecting routes; wherein in response to a request received from one of said initiator devices at said first portion to perform a transaction accessing one of said at least two recipients in communication with said second portion, said interconnect block is opType: GrantFiled: August 4, 2006Date of Patent: December 31, 2013Assignee: ARM LimitedInventors: Andrew David Tune, Robin Hotchkiss
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Patent number: 8619591Abstract: The present invention provides a transmission method for a physical layer operations, administration and maintenance (PLOAM) message in a passive optical network. The method includes: a transmitter dividing a PLOAM message to generate more than two new PLOAM messages, each of which comprises at least a message identification (Message ID) field (1501); and the transmitter transmitting the new PLOAM messages identified with Message IDs (1502). The invention also provides an assembling method for a PLOAM message in a passive optical network and a transmission device for a PLOAM message in a passive optical network. By using the method of the invention, the invention improves the efficiency of the PLOAM message transmission, avoids bandwidth waste, and simultaneously improves the flexibility and timeliness of the PLOAM message transmission between an OLT and an ONU.Type: GrantFiled: June 30, 2010Date of Patent: December 31, 2013Assignee: ZTE CorporationInventors: Weiliang Zhang, Dan Geng, Marek Hajduczenia
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Patent number: 8619583Abstract: An apparatus comprising a node configured to transmit operation, administration, and maintenance (OAM) connectivity frames, wherein the node adds an impairment notification indication to some, but not all of OAM connectivity frames transmitted by the node, wherein the impairment notification indication indicates the node's desire to receive notification of an impairment condition along the path. A network component comprising a receiver unit configured to receive multiprotocol label switching (MPLS) Ping frames, a circuit logic configured to add a downstream link impairment indication to responses to the MPLS Ping frames, wherein the downstream link impairment indication comprises a type and a severity level for a path impairment condition, and a transmitter unit configured to transmit the responses to the transmitted MPLS Ping frames.Type: GrantFiled: January 4, 2011Date of Patent: December 31, 2013Assignee: Futurewei Technologies, Inc.Inventor: Linda Dunbar
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Patent number: 8588076Abstract: A system for providing, to users of data communication services, access to a communication network providing these services includes an edge node as well as a packet network, such as an Ethernet connecting the users to the edge node. The packet network is equipped with operation and maintenance procedures for preserving edge connectivity over the packet network. The edge node is associated with a backup edge node, which also provides access to the communication network. Preferably, the backup edge node has the same address as the edge node such that, in the presence of failure of the edge node, seamless connection is established between the users and the backup edge node by applying the operation and maintenance procedures.Type: GrantFiled: December 28, 2005Date of Patent: November 19, 2013Assignee: Telecom Italia S.p.A.Inventors: Andrea Allasia, Mario Ullio, Vinicio Vercellone
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Publication number: 20130272132Abstract: Technology is discussed for self-optimization approaches within wireless networks to optimize networks for energy efficiency, load capacity, and/or mobility, together with new, supporting channel state measurements and handover techniques. New, Channel State Information-Reference Signals (CSI-RSs) for yet-to-be-configured Cell-IDentifications (Cell-IDs) can be used to determine whether adjacent transmission cells can provide coverage for transmission cells that can be switched off for energy efficiency during formation of a Single Frequency Network (SFN). New approaches are also discussed to facilitate mobility within such a network. The new CSI-RSs and mobility approaches can also be used to split up such a SFN when changing load demands so require. Additionally, such new approaches can be used to create a SFN with a common Cell-ID where high mobility is required, such as near a roadway, and to break it up where high capacity is required, such as during a period of traffic congestion.Type: ApplicationFiled: January 4, 2013Publication date: October 17, 2013Inventors: YOUN HYOUNG HEO, YUJIAN ZHANG, HUANING NIU, YUAN ZHU, DEBDEEP CHATTERJEE, JONG-KAE FWU, HUJUN YIN
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Patent number: 8537788Abstract: An apparatus and method of transmitting ACK/NACK (acknowledgement/negative ACK) information in downlink and an apparatus and method of receiving the ACK/NACK information are disclosed. The present invention configures ACK/NACK information on multiple UL codeword transmission using a PHICH and at least one NDI, whereby the ACK/NACK information on the multiple UL codeword transmission is transmitted to a user equipment without additional PHICH resource allocation. The present invention extends the conventional HI codeword and/or arranged position on a signal constellation, thereby transmitting ACK/NACK information on multiple UL codeword transmission to a user equipment without additional PHICH resource allocation.Type: GrantFiled: February 22, 2011Date of Patent: September 17, 2013Assignee: LG Electronics Inc.Inventors: Moon Il Lee, Jae Hoon Chung, Hyun Soo Ko, Seung Hee Han
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Patent number: 8537855Abstract: Systems and methods are disclosed for translating operational data between different protocols used by base stations to allow the base stations to coordinate their operational data. One embodiment is a system including a database, an interface, and a control system. The database stores translations between protocols used by base stations. The interface receives operational data in a first protocol from a first base station. The control system identifies a second base station as a target for the operational data, identifies a second protocol for the operational data used by the second base station, and identifies a translation stored in the database from the first protocol to the second protocol. The control system converts the operational data from the first protocol to the second protocol using the translation. The interface transmits the operational data in the second protocol to the second base station.Type: GrantFiled: February 22, 2011Date of Patent: September 17, 2013Assignee: Alcatel LucentInventor: Wajda Wieslawa
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Patent number: 8537686Abstract: An ATM switch allowing simplified OAM processing only on the line incoming side is disclosed. An incoming line circuit has a header conversion table storing information indicating whether the system is an end point of an OAM processing flow for each connection and an OAM table storing an AIS flag and an RDI flag for each connection. As for an OAM cell found by referring to these tables to be forced to go back to its own port, an switch output port number is rewritten in the OAM function section. In addition, in the case of an AIS cell, the function type is rewritten so as to become an RDI cell. In the case of an LB cell, the LB indication is rewritten so as to become a return LB cell, and switching to its own port is conducted in the ATM switch core.Type: GrantFiled: November 30, 2010Date of Patent: September 17, 2013Assignee: Juniper Networks, Inc.Inventor: Hiroyuki Iwamoto
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Patent number: 8531967Abstract: Methods and apparatuses relating to optimization of radio network resources between user equipments operating in a cell and nodes in a cellular radio communication network are provided. Cross-layer information is read from higher level control plane protocol layer packets being transported, before or during lower level control plane protocol layer procedures being performed between a user equipment and a node or between two nodes. The lower level control plane protocol layer procedures are optimized by using the analyzed control plane information received.Type: GrantFiled: April 18, 2008Date of Patent: September 10, 2013Assignee: Telefonaktiebolaget LM Ericsson (Publ)Inventors: Muhammad Kazmi, Gabor Fodor
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Patent number: 8514709Abstract: A wireless network access point is described which provides the resources of a backbone network to wireless clients. The access point is able to detect a degraded condition on the backbone network. Upon detecting the degraded condition, the access point selectively dissociates clients on the wireless network. In order to select which clients are dissociated first, a predetermined client dissociation policy is established. The policy can include account priority, bandwidth utilization, elapsed time since last transfer, and, amongst other criteria, whether the client is currently transferring in peer-to-peer mode on the wireless network. Upon detecting the degraded condition, either immediately or after a predetermined delay to ensure that the degraded condition is not temporary, clients on the wireless network are dissociated according to the preestablished policy.Type: GrantFiled: December 19, 2003Date of Patent: August 20, 2013Assignee: International Business Machines CorporationInventors: Daryl Carvis Cromer, Philip John Jakes, Howard Jeffrey Locker
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Patent number: 8494513Abstract: A spatio-temporal random voting scheme is provided that incorporates location distribution, spatial randomness, and temporal randomness in the collection of information from a plurality of sensing devices within the cognitive network. The region is divided into a plurality of sectors, where each sector is a portion of the region. A subset of sectors is selected from the plurality of sectors in the region to provide spatial randomness. A device is randomly selected from each sector in the subset of sectors to provide additional spatial randomness to the information collection process. Temporal randomness may be introduced by randomly selecting a timeslot within a sensing window period in which devices are to scan a frequency spectrum band to determine if a signal energy above a threshold is detected. Sensing reports are then collected from the selected sensing devices and used to determine whether the frequency spectrum band is available or in use.Type: GrantFiled: September 3, 2009Date of Patent: July 23, 2013Assignee: QUALCOMM IncorporatedInventors: Yong Jin Kim, Lakshminath R. Dondeti, Stephen J. Shellhammer, Wenyi Zhang