Class / Patent application number | Description | Number of patent applications / Date published |
370236200 | Using OAM (Operation, Administration and Maintenance) cells | 18 |
20080232255 | TRANSMISSION APPARATUS, MAINTENANCE FRAME PROCESSING METHOD, AND RECORDING MEDIUM HAVING A TRANSMISSION PROGRAM - The disclosed apparatus and method include transmitting and receiving frame(s) to/from another transmission apparatus, storing header information of user frames that are currently being transmitted to the other transmission apparatus, detecting whether the maintenance frame was received, splitting user frames and interrupting the transmission processing of the user frames, adding to subsequent user frames combination information, performing a transmission processing on response maintenance frames, resuming transmission processing of the subsequent user frames, and adding combination information and header information. | 09-25-2008 |
20080279105 | GPON OAM USING IEEE 802.1ag METHODOLOGY - Operations, administration and management (OAM) functions in a passive optical network (PON) can be performed by providing a system of flow points (i.e., software entities), such as those along the lines of the Maintenance End Points (MEPs) and Maintenance Intermediate Points (MIPs) described in the IEEE 801.1ag specification, which communicate connectivity fault test messages with each other. The flow points can be provided in the Optical Line Terminal (OLT) and Optical Network Terminator (ONT). Alternatively or in addition, flow points can be provided in a subscriber gateway coupled to the ONT. The flow points issue test messages, to which other flow points can respond with information regarding the state of network connectivity. | 11-13-2008 |
20090232003 | OAM TOOLS FOR MESHED TUNNELS IN A COMPUTER NETWORK - In one embodiment, a tunnel mesh probe, initiated for a computer network having a tunnel mesh, may be received at a first tail-end node of a probed tunnel. In response, the first tail-end node processes the probe, and forwards the probe to another tail-end node of a non-probed tunnel selected from a plurality of tunnels of the tunnel mesh for which the first tail-end node is a head-end node. Illustratively, once the probe is received at its initiating node, and in response to determining that the initiating node is a head-end node for only probed tunnels, the tunnel mesh probe is completed, having probed all tunnels of the tunnel mesh. | 09-17-2009 |
20100054132 | COMMUNICATION APPARATUS AND METHOD FOR TERMINATING A MAINTENANCE MESSAGE - A communication apparatus is disclosed for receiving one or more frames from a network. The communication apparatus includes a first determining part configured to search a first table by using a VLAN identifier included in one of the frames, a second determining part configured to search a second table by referring to a search result of the first determining part and using an OAM identifier included in the one of the frames, a selecting part configured to determine whether the one of the frames is an OAM frame according to the search result of the second determining part, and a terminating part configured to terminate the one of the frames determined as the OAM frame by the selecting part. | 03-04-2010 |
20110141899 | NETWORK ACCESS APPARATUS AND METHOD FOR MONITORING AND CONTROLLING TRAFFIC USING OPERATION, ADMINISTRATION, AND MAINTENANCE (OAM) PACKET IN INTERNET PROTOCOL (IP) NETWORK - Provided is a network access apparatus that is configured in an Internet Protocol (IP) network to thereby connect a user equipment and a service providing apparatus to the IP network. The network access apparatus may include: a packet receiver to receive a packet transferred from a user equipment and a service providing apparatus; an Operation, Administration, and Maintenance (OAM) packet processor to generate an OAM packet in the case of a source access apparatus, and to receive an OAM in the case of a destination access apparatus, and to contain load and traffic information of the destination access apparatus and generate the OAM packet in response to the source access apparatus; a traffic manager to measure and control traffic; and a packet transmitter to transmit, to a destination, a packet output from the OAM packet processor and the traffic manager. | 06-16-2011 |
20110164501 | Ingress Node Controlled Path Impairment Protocol - 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. | 07-07-2011 |
20110164502 | ETHERNET OAM PERFORMANCE MANAGEMENT - 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. | 07-07-2011 |
20110176424 | LOAD BALANCING IN A MOBILE COMMUNICATIONS SYSTEM - Load balancing in a mobile communications system comprising dynamically setting of a representation of a mapping table for mapping data to a respective UE priority list of two or more access layers is disclosed. In accordance with example embodiments, UE and/or network capabilities are input to the setting. | 07-21-2011 |
20110182184 | METHOD AND APPARATUS FOR INCREASING THE SCALABILITY OF THE ETHERNET OAM - 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. | 07-28-2011 |
20130010600 | Controller Driven OAM for OpenFlow - A method performed by a network element implementing an OpenFlow controller, the OpenFlow controller including an 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. The method includes receiving by an OAM module a request to execute the OAM function, generating a trigger monitoring message defining actions to be performed by an OpenFlow switch, wherein the actions are to provide the metrics for the OpenFlow data flow, receiving a plurality of monitor response messages, each including the metrics for the OpenFlow data flow, correlating the plurality of monitor response messages with the OAM function request, executing the requested OAM function, and returning a result of the requested OAM function. | 01-10-2013 |
20130272132 | SUPPORTED, SELF-OPTIMIZING WIRELESS NETWORKS, OPTIMIZED WITH RESPECT TO ENERGY, MOBILITY, AND CAPACITY - 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. | 10-17-2013 |
20140078905 | Ingress Node Controlled Path Impairment Protocol - 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. | 03-20-2014 |
20140233394 | PACKET PREDICTION IN A MULTI-PROTOCOL LABEL SWITCHING NETWORK USING OPENFLOW MESSAGING - 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. | 08-21-2014 |
20140241165 | METHOD AND APPARATUS FOR INCREASING THE SCALABILITY OF THE ETHERNET OAM - 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. | 08-28-2014 |
20160028602 | SYSTEMS AND METHODS TO DETECT AND PROPAGATE UNI OPERATIONAL SPEED MISMATCH IN ETHERNET SERVICES - A method, a network element, and a network operating an Ethernet service include transmitting information related to an operational speed of a first connection to the second switch, wherein the first switch is connected to a first Customer Premises Equipment (CPE) device through the first connection and the second switch is connected to a second CPE device through a second connection; receiving information related to an operational speed of the second connection; and triggering a modification to the Ethernet service, responsive to a mismatch between the operational speed of the first connection and the operational speed of the second connection. | 01-28-2016 |
20160080965 | Distributed RAN Information Collection, Consolidation And RAN-Analytics - Control Plane and User plane packet data are collected within the Radio Access Network using a plurality of network devices. Consolidation and summarization of this information is then performed to present a unified picture of RAN through abstract APIs to management and analytics applications. The invention identifies methods of retaining the collected network data, such as control and application protocol headers at the collection points, and consolidation and exporting this network data to management/reporting/analytics application using application driven rules for consolidation and summarization. Real-time statistical analysis tools, which may be used to predict failure and degradation trends and proactively control the underlying causes, are also disclosed. | 03-17-2016 |
20160112328 | METHOD AND SYSTEM FOR IMPLEMENTING ETHERNET OAM IN A SOFTWARE-DEFINED NETWORKING (SDN) SYSTEM - A method for implementing Ethernet operation, administration, and management (OAM) function in a network element coupled to a software-defined networking (SDN) system is disclosed. The method comprises adding a flow table entry for an OAM traffic flow to a flow table of the network element. The method continues with adding a group table entry for the OAM traffic flow to a group table of the network element, where the group table entry includes an instruction to send the packet to a set of ports, including a loopback port. The method continues with receiving the packet directing to the group table entry from the SDN controller, and sending the packet to the set of ports of the network element according to the group table entry, where the packet is to be looped back through the loopback port to the flow table periodically at a predetermined interval. | 04-21-2016 |
20170237614 | OPERATIONS, ADMINISTRATION, AND MANAGEMENT (OAM) FUNCTIONS IN A SOFTWARE DEFINED NETWORK | 08-17-2017 |