Using Oam (operation, Administration And Maintenance) Cells Patents (Class 370/236.2)
  • Patent number: 10498659
    Abstract: A method is provided in one example embodiment and may include configuring a slice identity for each of a plurality of virtual radio access network (vRAN) slices, wherein each vRAN slice comprises functionality to perform, at least in part, one or more radio protocol operations on subscriber traffic; configuring an allotment of radio resources that can be utilized by each vRAN slice of the plurality of vRAN slices; receiving, by a slice manager, a subscriber profile identity (SPID) for a subscriber; and mapping the SPID for the subscriber to a particular vRAN slice of the plurality of vRAN slices. The method can further include communicating the mapping for the subscriber to the particular vRAN slice to which the SPID is mapped. The method can further include communicating the allotment of radio resources that can be utilized by the particular vRAN slice to the particular vRAN slice.
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: December 3, 2019
    Assignee: CISCO Technology, INC.
    Inventors: Oliver James Bull, Mark Grayson
  • Patent number: 10447421
    Abstract: The present disclosure provides a fronthaul control device which can adjust a center wavelength of an optical signal to changeably control allocation of an optical wavelength band; an operating method of the fronthaul control device; a program for controlling allocation of an optical wavelength band; and a computer-readable recording medium in which the program is recorded.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 15, 2019
    Assignee: SK TELECOM CO., LTD.
    Inventors: Chang Soon Choi, Min Soo Na
  • Patent number: 10432534
    Abstract: The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system to be provided for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). According to various embodiments, a device of an intermediate node comprises: a receiving unit configured to receive a signal for determining a buffer threshold value of at least one terminal; and a control unit configured to determine a buffer threshold value of the terminal on the basis of the signal, and determine a size of data to be requested to at least one server according to the determined buffer threshold value of the terminal.
    Type: Grant
    Filed: August 27, 2015
    Date of Patent: October 1, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Sung Lee, Jung-Shin Park, Han-Na Lim, Beom-Sik Bae, Hyung-Ho Lee, Joo-Hyung Lee
  • Patent number: 10116545
    Abstract: Embodiments of the present application provide a method, device, and system for processing an OAM packet, where the method for processing an OAM packet includes: receiving, by a first network device, an operation, administration and maintenance (OAM) instruction sent by an OAM server, where the OAM instruction carries first format information and a first sending target identifier, where the first format information is used for indicating an OAM packet format; and generating, by the first network device, a first OAM packet according to the first format information, and sending the first OAM packet to a network device indicated by the first sending target identifier. The method, device, and system for processing an OAM packet provided in the embodiments of the present application achieve adaptability to different OAM standards without changing of a hardware structure of a network device, and improve OAM processing flexibility.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: October 30, 2018
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Zhiqiang Yu, Guoyi Chen, Lianshu Zheng
  • Patent number: 10075335
    Abstract: In a software defined network, dataplane connectivity is established between a computing device in the network and a controller. The computing device receives a probe packet from the controller, and identifies a port of the computing device through which the probe packet was received. The computing device sets a local route for communication with the controller through the identified port. The computing device then establishes a connection with the controller through the local route. This procedure is reiterated to incrementally expand network connectivity to a plurality of network devices.
    Type: Grant
    Filed: February 7, 2017
    Date of Patent: September 11, 2018
    Assignee: Google LLC
    Inventors: Lorenzo Vicisano, James Wanderer, Steven Padgett, Amin Vahdat
  • Patent number: 9967855
    Abstract: A device may receive network congestion information relating to one or more connections. The network congestion information may identify respective utilizations of the one or more connections. The one or more connections may be associated with one or more access points. The device may cause the network congestion information to be provided to a set of user equipments (UEs) via a multicast transmission to cause one or more UEs, of the set of UEs, to switch from a first connection, of the one or more connections, to a second connection, of the one or more connections, based on the network congestion information. The one or more UEs may be connected to a network via a multicast connection.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: May 8, 2018
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Lalit R. Kotecha, Rakesh Chandwani
  • Patent number: 9813312
    Abstract: A controller implemented on computing equipment may control switches in a network. The controller may provide flow tables that implement network policies to the switches to control packet forwarding through the network. The controller may provide debug table entries to the switches for use in a debug table that is separate from the flow table. The debug table entries may match incoming network packets and increment corresponding counters on the switches. The controller may retrieve count information from the counters for performing debugging operations on the network. For example, the controller may identify conflicts between fields of a selected flow table entry, determine whether elephant packet flows are present between switches, determine whether desired load balancing is being performed, determine whether a network path has changed, determine whether packet loss has occurred, and/or determine whether network packets are taking undesired paths based on the retrieved count information.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: November 7, 2017
    Assignee: Big Switch Networks, Inc.
    Inventors: Xin Wu, Rajneesh Bajpai, Robert W. Sherwood, Srinivasan Ramasubramanian, Gregor Mathias Maier, Richard Leegan Lane, II, Kenneth Hsinchao Chiang, Mei Yang
  • Patent number: 9804884
    Abstract: A communication system includes a control device configured to calculate a packet forwarding path and set a flow based on the packet forwarding path in a node, and a plurality of nodes configured to forward a received packet based on a flow set by the control device. The control device, when receiving a detour instruction, calculates a new packet forwarding path which detours a detour target node and sets a flow based on the new packet forwarding path in the plurality of nodes on the new packet forwarding path.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: October 31, 2017
    Assignee: NEC Corporation
    Inventors: Koji Ashihara, Junichi Yamato
  • Patent number: 9794830
    Abstract: Access technology priority lists and related access list identifiers are maintained in a radio access system such that at least one access list identifier is associated with a plurality of access technology priority lists. Behavior of at least one communication device in the radio access system is controlled by selecting one of the access technology selection priority lists based on information (such as load conditions or quality of service class) regarding an access list identifier and the radio access system.
    Type: Grant
    Filed: May 27, 2013
    Date of Patent: October 17, 2017
    Assignee: Nokia Solutions and Networks Oy
    Inventors: Seppo Olavi Hämäläinen, Rauli Juhani Parkkali, Haitao Tang
  • Patent number: 9769054
    Abstract: A network topology discovery method and system are disclosed, which relates to the field of software defined network architecture, and solves a problem that greater pressure is easily put on a control channel in a case that a great many switches and ports exist. The method includes: a controller receiving a message sent by a network device, wherein the message carries a device ID of a network device where a link far-end port of the network device is located and a port number of the link far-end port; and the controller performing topology discovery on a network according to the message. The technical scheme provided in the present document is applicable to a software defined network, which achieves that related parameters are carried to the controller via an OpenFlow protocol.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: September 19, 2017
    Assignee: ZTE Corporation
    Inventor: Qilei Wang
  • Patent number: 9722896
    Abstract: Networks devices interconnected via link groups may implement micro operations administration and maintenance (micro-OAM) sessions. The micro-OAM sessions may be used to monitor the status of individual links within the link groups at small time scales. The micro-OAM session may be implemented on a non-internet protocol (non-IP) layer. In some cases, independent micro-OAM sessions may be used to monitor different links within a link group.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: August 1, 2017
    Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.
    Inventors: Ashish Ramkrishna Sontakke, Vivek Kumar, Santhosh Kumar Chandrasekar, Mohan Venkatachar Kalkunte, Shahram Davari
  • Patent number: 9706371
    Abstract: Embodiments relate to push notification middleware. A method includes receiving, at a notification service of a mobile platform server executing on a computer processor, a notification trigger including a payload to deliver to an endpoint. The method also includes accessing, by the notification service, a registry to determine a notification transport protocol associated with the endpoint. A channel plugin associated with the notification transport protocol is selected by the notification service to establish a notification channel with the endpoint, and the payload is sent to the endpoint on the notification channel.
    Type: Grant
    Filed: July 23, 2013
    Date of Patent: July 11, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Todd E. Kaplinger, Michael R. Rheinheimer, Brian L. White Eagle
  • Patent number: 9699625
    Abstract: Embodiments relate to push notification middleware. A system includes a computer processor and a mobile platform server executable by the computer processor. The mobile platform server includes a notification service and a registry. The notification service is configured to receive a notification trigger including a payload to deliver to an endpoint and access the registry to determine a notification transport protocol associated with the endpoint. The notification service is further configured to select a channel plugin associated with the notification transport protocol to establish a notification channel with the endpoint and send the payload to the endpoint on the notification channel.
    Type: Grant
    Filed: July 18, 2013
    Date of Patent: July 4, 2017
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Todd E. Kaplinger, Michael R. Rheinheimer, Brian L. White Eagle
  • Patent number: 9660903
    Abstract: A method for inserting an OpenFlow flow entry into a flow table is disclosed. In the embodiment, the method involves receiving a flow mod message at an OpenFlow-enabled switch, the flow mod message including a cookie field, decoding an OpenFlow flow entry from the flow mod message, identifying a flow table from the cookie field, and inserting the decoded flow entry into the flow table.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: May 23, 2017
    Assignee: Alcatel Lucent
    Inventors: Jayant Kotalwar, Andrew Dolganow, Girish Birajdar
  • Patent number: 9660904
    Abstract: A method for inserting an OpenFlow flow entry into a flow table is disclosed. In the embodiment, the method involves receiving a flow mod message at an OpenFlow-enabled switch, the flow mod message including a cookie field, decoding an OpenFlow flow entry from the flow mod message, identifying a flow table from the cookie field, and inserting the decoded flow entry into the flow table.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: May 23, 2017
    Assignee: Alcatel Lucent
    Inventors: Jayant Kotalwar, Andrew Dolganow, Girish Birajdar
  • Patent number: 9602374
    Abstract: A method and network element include receiving, at a receiver node, at least one of sender timestamps and sequence numbers in continuity check (CC) frames sent by a sender node; determining receiver timestamps at the receiver node; detecting instability based on one or more of the at least one of sender timestamps and sequence numbers and the receiver timestamps; and performing a remedial action based on the detecting instability. The CC frames can include Bidirectional Forwarding Detection (BFD) or Continuity Check Message (CCM) frames which are regularly transmitted in a session, but do not currently include timestamps or sequence numbers.
    Type: Grant
    Filed: July 21, 2014
    Date of Patent: March 21, 2017
    Assignee: Ciena Corporation
    Inventors: Ashesh Mishra, Ankur Saxena, Mahesh Jethanandani
  • Patent number: 9590888
    Abstract: The present document discloses a link keep-live method, a controller and a switch, including: acquiring link information by the controller, after the link information is acquired, sending the link information to a source switch and/or destination switch of a link corresponding to the link information; and, correspondingly sending keep-live mode information and a link keep-live starting instruction to the source switch and/or destination switch, triggering the source switch and/or destination switch to perform the link keep-live between the source switch and destination switch according to the link information and keep-live mode information; or, after the controller acquires the link information, sending the link information to the source switch and/or destination switch of the link corresponding to the link information, triggering the source switch and/or destination switch to determine a mode adopted for link keep-live, performing the link keep-live between the source switch and destination switch according
    Type: Grant
    Filed: September 26, 2013
    Date of Patent: March 7, 2017
    Assignee: ZTE Corporation
    Inventor: Renjie Yuan
  • Patent number: 9577751
    Abstract: The present invention provides an Ethernet performance detection method and system and an optical network terminal. The method includes: receiving, by an ONT, a detection configuration instruction, and configuring a maintenance end point according to the detection configuration instruction; configuring a performance detection path from the MEP to the VMEP according to states of the virtual maintenance end points configured on a main node and a backup node, wherein the VMEP includes two virtual MEPs, the IDs of the two virtual MEPs are identical, at the same moment; and transmitting a message to a node corresponding to the virtual MEP with the main state. When the node states of the main node and backup node are switched, the optical network terminal may automatically switch the performance detection path to the node corresponding to the virtual MEP, in order to continue to perform the network performance detection.
    Type: Grant
    Filed: September 21, 2015
    Date of Patent: February 21, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Haibo Zhang, Jianfei Yue, Hongming Liu
  • Patent number: 9509429
    Abstract: A method executed by an optical line terminal (OLT) in a passive optical network (PON). The PON includes a plurality of optical network units (ONUs) coupled with the OLT through an optical fiber, the ONUs sharing a bandwidth of the optical fiber. The method includes receiving, from the ONU, an energy conservation message indicating support for the reduced buffer memory size. The reduced buffer memory size is calculated based on the maximum committed transmission rate and the burst size limit for the downstream traffic intended for the ONU. A notification is transmitted to the ONU indicating that a portion of the buffer memory can be powered down such that only the reduced size of the buffer memory remains in operation, and downstream traffic intended for the ONU is transmitted at an average transmission rate and burst size not exceeding the maximum committed transmission rate and the burst size limit.
    Type: Grant
    Filed: March 6, 2013
    Date of Patent: November 29, 2016
    Assignee: Telefonaktiebolaget L M Ericsson (PUBL)
    Inventor: David Hood
  • Patent number: 9503381
    Abstract: A system and method for carrying control data in a preamble. A control-data bearing preamble is defined to facilitate end-to-end labeling and control-data transport. This control-data bearing preamble provides a unified labeling scheme with minimal overhead, which facilitates greater ease in parsing. The control-data bearing preamble can be converted to/from other control/labeling schemes at the edge of the control-data bearing preamble aware portion of the network.
    Type: Grant
    Filed: March 4, 2013
    Date of Patent: November 22, 2016
    Assignee: BROADCOM CORPORATION
    Inventors: Lowell David Lamb, Glen Kramer, Lawrence Drew Davis
  • Patent number: 9485162
    Abstract: The disclosure provides a method for measuring a frame loss ratio. A first end acquires a frame number of a received current measurement reply frame and a frame number of a received previous measurement reply frame, and judges whether the difference between the frame number of the current measurement reply frame and the frame number of the previous measurement reply frame is 1; if the difference is 1, the first end calculates the frame loss ratio according to count information carried in the current measurement reply frame and the previous measurement reply frame; and if the difference is greater than 1, the first end calculates the frame loss ratio according to the count information carried in the current measurement reply frame and the previous measurement reply frame and the difference.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: November 1, 2016
    Assignee: ZTE CORPORATION
    Inventor: Fuyou Zhang
  • Patent number: 9439227
    Abstract: A WLAN access device includes a connecting module, a PING detecting module, and a wireless signal control module. The connecting module obtains an IP address from a DHCP. After the connecting module getting the IP address, the PING detecting module sends the PING messages to a gateway, and receives the corresponding response messages from the gateway. The wireless signal control module enables a wireless module of the WLAN access device to transmit wireless signals when the PING detecting module receives the corresponding response messages from the gateway. The present disclosure further provides a method of controlling wireless signals of the WLAN access device.
    Type: Grant
    Filed: March 27, 2014
    Date of Patent: September 6, 2016
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventor: Ya-Ti Wei
  • Patent number: 9369387
    Abstract: An example method for segment routing based wide area network (WAN) orchestration in a network environment is provided and includes monitoring a segment routing (SR) enabled WAN environment in at least near real-time by a path computation element (PCE) located outside the WAN, receiving an event notification at the PCE, and performing traffic engineering using SR to reroute traffic off shortest paths. In one embodiment, where a current state of the WAN is not pre-computed, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies, deploying the optimized routes in the WAN, re-optimizing routes for other parameters, and further deploying the re-optimized routes in the WAN. In another embodiment, performing traffic engineering comprises optimizing routes to remove violation of any utilization policies and for other parameters, and deploying the optimized routes in the WAN.
    Type: Grant
    Filed: April 3, 2014
    Date of Patent: June 14, 2016
    Assignee: CISCO TECHNOLOGY, INC.
    Inventors: Clarence Filsfils, Thomas F. Telkamp, Alan Thornton Gous
  • Patent number: 9357594
    Abstract: An LED driver for powering an LED fixture includes a power converter for converting an input power such as a rectified mains supply to an output power for powering the LED fixture; a control unit arranged to control an output characteristic of the power converter; optionally, a network terminal connected to the control unit for connecting the control unit to a network, the control unit being arranged to receive a control signal from the network via the network terminal for controlling the output characteristic; an application terminal connected to the control unit for connecting the control unit to a lighting device; the control unit being arranged to: provide a polling signal to the lighting device; receive, in response to the polling signal, a control signal for controlling the output characteristic.
    Type: Grant
    Filed: December 22, 2011
    Date of Patent: May 31, 2016
    Assignee: EldoLAB Holding B.V.
    Inventor: Marc Saes
  • Patent number: 9210089
    Abstract: The present disclosure provides for carrying downstream mapping information in an echo request message and/or echo reply message, which can describe both IP (Internet Protocol) multipath information and label multipath information. A transit node (e.g., an LSR element) that receives an echo request message from an initiator node determines downstream mapping information, which is returned to the initiator node. Transit node determines whether a newly defined type of multipath information (type 10) should be generated to return the downstream mapping information, based on whether transit node performs load balancing based on labels or IP header information, and whether transit node imposes entropy labels. A multipath information type 10 element includes either IP multipath information or label multipath information, as well as associated label multipath information that includes one or more entropy labels that map to the IP or label multipath information being returned.
    Type: Grant
    Filed: December 18, 2013
    Date of Patent: December 8, 2015
    Assignee: Cisco Technology, Inc.
    Inventors: Nobushige Akiya, George Swallow, Carlos M. Pignataro, Nagendra Kumar
  • Patent number: 9191290
    Abstract: The present invention relates to methods and devices for monitoring a data path extending from an originating node to a terminating node in a network. In a first aspect of the present invention, the method comprises the step of submitting, to the originating node, a request to monitor at least one network status parameter associated with a particular data flow transported on the data path. Further, the method comprises the step of submitting, to all nodes in the data path, a data flow identifier indicating the particular data flow being one out of a plurality of data flows that can be transported on the data path. Moreover, the method comprises the step of receiving, from at least one of the nodes in the data path, a response message comprising the requested at least one network status parameter.
    Type: Grant
    Filed: June 19, 2012
    Date of Patent: November 17, 2015
    Assignee: TELEFONAKTIEBOLAGET L M ERICSSON (PUBL)
    Inventors: Zhemin Ding, Panagiotis Saltsidis
  • Patent number: 9184932
    Abstract: A system and method for providing Connectivity Fault Management, CFM, in a Provider Backbone Bridge Traffic Engineering, PBB-TE, telecommunication network utilizing Ethernet-based packet transport. PBB-TE point-to-point and point-to-multipoint services are identified, and PBB-TE maintenance points (31, 41) associated with the identified PBB-TE services are addressed. The addressed PBB-TE maintenance points are modified by adding a PBB-TE Service Demultiplexer (32, 42) to each PBB-TE maintenance point for identifying independent PBB-TE service instances. Basic CFM protocols are enhanced to duplicate the behavior of CFM protocols on virtual local area network, VLAN, based maintenance associations. The PBB-TE maintenance points may be Maintenance association End Points, MEPs, and Maintenance association Intermediate Points, MIPs.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: November 10, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventor: Panagiotis Saltsidis
  • Patent number: 9178756
    Abstract: Embodiments of the present invention provide a method and a device for processing location information of a fault point. The method includes: obtaining, by an ingress node of an LDP LSP, first location information of a fault point on a link traversed by the LDP LSP, where the first location information of the fault point includes an identifier of an upstream node of the fault point and an identifier of an interface that is connected to the fault point and located on the upstream node of the fault point; and providing the first location information of the fault point to a user so that the user determines a location of the fault point corresponding to an LDP LSP fault. Therefore, the location of the fault point corresponding to the LDP LSP fault can be determined, and efficiency of troubleshooting specific to the LDP LSP fault can be improved.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: November 3, 2015
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Changsheng Sun, Yu Zhang, Linkun Chen
  • Patent number: 9166900
    Abstract: 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: Grant
    Filed: November 24, 2014
    Date of Patent: October 20, 2015
    Assignee: Accedian Networks Inc.
    Inventor: Anders Wallman
  • Patent number: 9118621
    Abstract: The present invention provides a novel network controller that does not need extensive development resources to add and expand functions of a communications protocol with maintaining high communication quality, does not generate waste of resources, is easy to maintain, and can be applied to embedded systems.
    Type: Grant
    Filed: December 26, 2012
    Date of Patent: August 25, 2015
    Assignee: Ricoh Company, Ltd.
    Inventor: Ryosuke Mizunashi
  • Patent number: 9083602
    Abstract: Provided is a communication system which is provided with a plurality of communication devices and transfers a packet between the plurality of communication devices through a communication path. When a packet is looped back at any of the communication devices on the communication path to verify connectivity of the communication path, a first communication device of the plurality of communication devices stores, in a first region of header information of the packet, first information for designating the communication device at which the packet is looped back, further stores, in a second region of the header information of the packet, second information on a loopback point in the designated communication device at which the packet is looped back, and sends the packet to which the first information and the second information have been added.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: July 14, 2015
    Assignee: Hitachi, Ltd.
    Inventors: Hideki Endo, Taisuke Ueta, Yoshihiro Ashi, Norio Miyazaki
  • Patent number: 9043449
    Abstract: An example method transmits a path message to an egress node, via intermediate nodes, that configures OAM monitoring of an entire connection between an ingress node and the egress node and also configures OAM monitoring of at least one segment of the connection shorter than the entire connection by at least one intermediate node. The path message comprises a LSP attributes object and an ERO. The LSP object comprises technology-specific attributes defining descriptors for configuring the egress node in accordance with a communication protocol utilized for the connection; and technology-independent OAM parameters that, irrespective of the communication protocol, define an OAM type to be used by the egress node, and define desired monitoring actions for the egress node to perform. The ERO comprises a respective HOP Attributes sub-object for configuring each of the at least one intermediate nodes.
    Type: Grant
    Filed: June 9, 2010
    Date of Patent: May 26, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: András Kern, Attila Takács
  • Patent number: 9019814
    Abstract: 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: Grant
    Filed: August 5, 2013
    Date of Patent: April 28, 2015
    Assignee: Juniper Networks, Inc.
    Inventors: Satya Ranjan Mohanty, Wen Lin, John E. Drake
  • Patent number: 9007917
    Abstract: 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: Grant
    Filed: May 1, 2014
    Date of Patent: April 14, 2015
    Assignee: Rockstar Consortium US LP
    Inventor: John Osswald
  • Patent number: 8995294
    Abstract: 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: Grant
    Filed: April 23, 2012
    Date of Patent: March 31, 2015
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Aris Papasakellariou, Joon-Young Cho
  • Patent number: 8982705
    Abstract: 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: Grant
    Filed: April 15, 2011
    Date of Patent: March 17, 2015
    Assignee: Sony Corporation
    Inventor: Koichiro Watanabe
  • Patent number: 8971390
    Abstract: 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: Grant
    Filed: June 14, 2010
    Date of Patent: March 3, 2015
    Assignee: Infineon Technologies AG
    Inventor: Dietmar Schoppmeier
  • Patent number: 8964563
    Abstract: 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: Grant
    Filed: October 21, 2011
    Date of Patent: February 24, 2015
    Assignee: Telefonaktiebolaget L M Ericsson (publ)
    Inventors: David Jocha, Andras Kern
  • Publication number: 20150049601
    Abstract: 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: Application
    Filed: August 14, 2014
    Publication date: February 19, 2015
    Inventor: Michael K. Bugenhagen
  • Patent number: 8953456
    Abstract: 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: Grant
    Filed: March 14, 2011
    Date of Patent: February 10, 2015
    Assignee: Rockstar Consortium US LP
    Inventors: Dinesh Mohan, Marc Holness
  • Patent number: 8948744
    Abstract: 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: Grant
    Filed: June 12, 2013
    Date of Patent: February 3, 2015
    Assignee: QUALCOMM Incorporated
    Inventors: Yong Jin Kim, Lakshminath Reddy Dondeti, Stephen Jay Shellhammer, Wenyi Zhang
  • Patent number: 8934343
    Abstract: 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: Grant
    Filed: January 25, 2013
    Date of Patent: January 13, 2015
    Assignee: Rockstar Consortium US LP
    Inventor: Phil Wang
  • Patent number: 8923132
    Abstract: 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: Grant
    Filed: February 20, 2014
    Date of Patent: December 30, 2014
    Assignee: Accedian Networks Inc.
    Inventor: Anders Wallman
  • Patent number: 8902757
    Abstract: 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: Grant
    Filed: June 13, 2011
    Date of Patent: December 2, 2014
    Assignee: Tejas Networks Ltd
    Inventor: Hayim Porat
  • Patent number: 8897308
    Abstract: 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: Grant
    Filed: November 2, 2010
    Date of Patent: November 25, 2014
    Assignee: NEC Corporation
    Inventors: Zhenlong Cui, Hiroyuki Takagi, Masaki Umayabashi, Kazuo Takagi, Akira Sakurai, Hiroshi Tanaka
  • Patent number: 8873390
    Abstract: 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: Grant
    Filed: May 23, 2011
    Date of Patent: October 28, 2014
    Assignee: International Business Machines Corporation
    Inventors: Jeffrey S. Chase, Ronald P. Doyle, David Louis Kaminsky, David M. Ogle, Richard D. Telford
  • Patent number: 8873397
    Abstract: 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: Grant
    Filed: April 15, 2011
    Date of Patent: October 28, 2014
    Assignee: Sony Corporation
    Inventor: Koichiro Watanabe
  • Patent number: 8861371
    Abstract: 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: Grant
    Filed: November 21, 2011
    Date of Patent: October 14, 2014
    Assignee: Verizon Patent and Licensing Inc.
    Inventors: Roman Krzanowski, Te Sheng Lin
  • Patent number: 8854975
    Abstract: 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: Grant
    Filed: November 14, 2012
    Date of Patent: October 7, 2014
    Assignee: Rockstar Consortium US LP
    Inventors: Robert Friskney, Simon Parry, David Allan
  • Patent number: 8842692
    Abstract: 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: Grant
    Filed: September 6, 2011
    Date of Patent: September 23, 2014
    Assignee: QUALCOMM Incorporated
    Inventors: Xinzhou Wu, Sanjay Shakkottai, Junyi Li