| Entries |
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| 20080205284 | LABEL SWITCHED PATH OAM WRAPPER - Methods and devices for logically segmenting an LSP so that OAM DTUs may be used to determine the performance and/or the status of LSP segments. To segment a previously determined LSP, a dedicated subpath (a logical LSP) within that predetermined LSP is defined between two LSRs that are capable of processing OAM DTUs. The source node (source LSR) establishes a logical LSP between itself and the destination node (destination LSR) using an LDP. In doing this, the logical LSP traverses a specific path and transits through specific nodes in that path. The source node then transmits an OAM DTU or any other specialized DTU to the destination node using a label specifically associated with the logical LSP that was established. The characteristic of the specific path traversed by the logical LSP can thus be determined by when, how, and if the specialized DTU is received by the destination node. | 08-28-2008 |
| 20080219171 | Systems and methods for the implementation of a remote test access feature using virtual connection points and sub-network connections - The present invention provides systems and methods for the implementation of a remote test access feature using virtual connection points and sub-network connections by the merge-and-split of flexible permanent virtual circuits. The remote test access feature of the present invention represents a highly flexible and fully automated technique that utilizes and exploits a network cloud. A sub-network connection is created between a remote test set and a connection termination point of a circuit of interest through the provision of two endpoints of interest. Subsequently, monitoring and management capabilities are established and operation, administration, and maintenance functions are performed at a centralized location using a network management system. The remote tap used may employ any protection scheme and mesh restore, as necessary, either manually or automatically, in the event of signal degrade or failure scenarios. The endpoint of the remote tap may be selectively changed, and the remote tap re-groomed for a different circuit of interest via a simple point-and-click. Thus, problems anywhere in the transport network may be tracked down. | 09-11-2008 |
| 20080219172 | Forwarding Plane Data Communications Channel for Ethernet Transport Networks - Described is a process and system for providing an extensible forwarding plane data communications channel adapted to selectively support operations, administration and maintenance (OAM) activity within one or more different domains of an Ethernet transport network. The data communication channel is established using Ethernet protocol data units forwarded within the forwarding plane, between network elements. The Ethernet protocol data units can be Ethernet OAM frames modified to include an OpCode indicative of a maintenance communication channel. The OAM frames are generated at a selected one of the network elements (source), forwarded along the same network path as the Ethernet frames, and terminate at another network element (destination) associated with a maintenance level identified within the OAM frame. The source and destination network elements can reside on a domain boundary using the Ethernet OAM frames flowing therebetween to relay maintenance communications channel messages. | 09-11-2008 |
| 20080219173 | NETWORK TEST APPARATUS, NETWORK TEST METHOD AND NETWORK TEST PROGRAM - According to an aspect of an embodiment, an apparatus is transmitting/receiving an OAM frame containing kinds of tests indicating one or more tests for Ethernet-OAM to/from a relay apparatus, storing configuration information to generate a network configuration needed for each of the plurality of tests in a pseudo manner, distinguishing the kind of test contained in the relevant OAM frame and obtaining network information of a network to which the relay apparatus that transmitted the OAM frame belongs and obtaining configuration information corresponding to the obtained network information obtained from the stored configuration information. | 09-11-2008 |
| 20080239969 | Method and System For Data Forwarding in Label Switching Network - The present invention discloses a method for data forwarding used in label switching networks, with which, at the source node, sequence numbers are added to the data packets forming an original data flow to be forwarded according to the forwarding order, then the data packets are mapped to label switched paths (LSP) for forwarding; at the destination node, the data packets received from the LSPs are merged into the same data flow as the original data flow to be forwarded according to the order of the sequence numbers. Meanwhile, during the data forwarding in accordance with the invention, an alarm mechanism is used to detect a faulted LSP, and the mapping strategy is adjusted timely to avoid the massive loss of the data packets, which guarantees the security of the data forwarding to the greatest extent while a high bandwidth utilization ratio is ensured. | 10-02-2008 |
| 20080247322 | METHOD FOR MONITORING THE TRANSMISSION QUALITY OF CONNECTIONS IN MPLS NETWORKS - The invention relates to a low-effort monitoring method of the transmission quality of connections in MPLS networks. Specially configured MPLS-OAM packets (MPLS-OAM-LAV packets) are defined and are periodically inserted into the traffic flow of user data packets at the source of a connection or a partial section of a connection, said MPLS-OAM-LAV packets being distinguishable from other MPLS-OAM packets and the MPLS packets carrying user data by a special mark. The information part of the MPLS-OAM-LAV packets contains a field receiving the number of MPLS packets that have been sent within a given period of time. Said tally is read out at the reception end (acceptor) and is compared with the number of actual packets received for said connection within the given period of time. The result serves as a criterion for lost and/or erroneously added packets. | 10-09-2008 |
| 20080273467 | METHODS FOR DETERMINING PW CONNECTION STATE AND FOR NOTIFYING AC CONNECTION STATE AND THE ASSOCIATED EQUIPMENTS - Method for determining PW connection state and for notifying AC connection state and the associated equipments. For determination of PW connection state, PW-OAM packets are added to detect the PW connection state. A local PE transmits a PW-OAM request packet, and upon receipt of the PW-OAM request packet, a peer PE responds with a PW-OAM reply packet. If the reply packet is received within a preset time period, the local PE determines that the PW between the PEs is normal. For notification of AC connection state, an AC-OAM packet is added, the packet carrying fields for sub-AC identifications and sub-AC states. With the AC-OAM packet, the peer is notified of the sub-AC state change of the PE. | 11-06-2008 |
| 20080285466 | Interworking between MPLS/IP and Ethernet OAM mechanisms - In one embodiment, a method includes receiving, by a provider edge (PE) device, a transport layer status message indicative of a defect on a pseudowire (PW) running across a core of a service provider (SP) network. The status message is translated to a service layer message indicative of the defect. The service layer message is then transmitted across an access domain of the SP network. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. | 11-20-2008 |
| 20090059799 | SCALING OAM FOR POINT-TO-POINT TRUNKING - 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. | 03-05-2009 |
| 20090059800 | Method and apparatus for managing the interconnection between network domains - A control protocol is run in the interconnect region between network domains so that the interconnect region may be managed using a separate control plane. According to an embodiment of the invention, a spanning tree protocol is used to establish a separate spanning tree within the interconnect region. To avoid loop formation within the interconnect region, links interconnecting adjacent edge nodes that are part of the interconnect region and which belong to a given domain are allowed to pass control frames but not data frames. OAM may be used detect link failure of a link between adjacent nodes on a given domain. | 03-05-2009 |
| 20090086641 | Method and Apparatus for Detecting Support for A Protocol Defining Supplemental Headers - Various methods and systems for detecting whether a network device supports a protocol, which defines a supplemental header, are disclosed. One method involves detecting a value within a preamble generated by a sending device and verifying that a header format of a header, also generated by the sending device, conforms to a header format definition of a protocol. The header format definition of the protocol defines a supplemental header. The preamble can be an Ethernet preamble. In one embodiment, the preamble is a converged data link (CDL) preamble or other type of preamble that is used to convey operation, administration and management (OAM) information. | 04-02-2009 |
| 20090141639 | MANAGING OAM PACKETS IN A COMMUNICATIONS NETWORK - Management of an Operation and Maintenance (OAM) packet in a communications network is provided. According to one embodiment, a network device in a Multiprotocol Label Switching (MPLS) network for providing a uniform distribution of OAM is provided. The network device comprises of a memory unit and a hardware unit. The memory unit having an improved data table with an active record. The hardware unit coupled to the memory unit. The hardware unit operable to calculate an interval based on a number of active records in the improved data table, scan the active record generally within the interval, and form an OAM packet based on the active record. | 06-04-2009 |
| 20090161555 | RADIO ACCESS STATION APPARATUS AND METHOD OF CONTROLLING CALL IN PORTABLE INTERNET SYSTEM - Provided are a radio access station (RAS) apparatus and a method of controlling a call in a portable Internet system, that are capable of dispersing traffic concentrated in an access control router (ACR). According to the apparatus and method, an operation, administration and maintenance (OAM) task for operation and management of a RAS, an admission task for call admission processing and service flow control for a portable subscriber station (PSS), a public key manager (PKM) task for authentication and registration of the PSS, a mobility task for handover processing for the PSS, and an account task for accounting are implemented as modules in the RAS. A call control procedure capable of being performed in the RAS is performed in the RAS by the tasks, thereby embodying a RAS-based call control method. Therefore, in comparison with a conventional ACR-based call control method, it is possible to disperse traffic loads concentrated in an ACR and establish an economical network. | 06-25-2009 |
| 20090168655 | DELAY TIME MEASURING METHOD AND SYSTEM OF ECHO REQUEST/RESPONSE IN NETWORK, AND STATION AND PROGRAM USED IN THE SAME SYSTEM - There is provided a unit capable of performing calculation of delay time between a measuring station and a station to be measured by using an echo request/response frame in any block and at any time in a manner being independent from time-synchronization. To a payload portion of an OAM (Operations, Administration and Maintenance) echo request/response frame to be used for an OAM testing are added “request transmitting time” being the time at which an OAM echo request has been transmitted from the measuring station and “response receiving time” being the time at which the measuring station has received an OAM response from the station to be measured. After termination of the testing, the OAM echo request/response frame stored in a data buffer is read at arbitrary time and the request transmitting time added to the frame and response receiving time are extracted to calculate delay time between the measuring station and the station to be measured. | 07-02-2009 |
| 20090168656 | PVC SWITCHING CONTROL METHOD FOR ATM COMMUNICATION NETWORK - The invention provides a PVC switching control method for an ATM communication network which allows high speed changeover of a connection upon occurrence of/release from a trouble and is superior in reliability and maintenance facility and simple in control. A master PVC connection and an OAM connection are set between two ATM exchanges, and a bypassing PVC connection and an OAM connection prepared in advance for bypassing are set between the two ATM exchanges. If occurrence of/release from a trouble with and of the master PVC connection is recognized by the ATM exchanges using an OAM function, then the operative PVC connection is switched between the master PVC connection and the bypassing PVC connection. | 07-02-2009 |
| 20090201819 | Network System and Data Transfer Device - To prevent, in using a multicast DA in an OAM frame, an increase in the network bandwidth usage and in the load of node processing and a degradation of the network reliability caused by a frame being transmitted to all routes in a broadcast domain. A MAC address and other basic frame information and the MEGID are associated with each other, and the MEGID information is added to the OAM frame, and these information are transmitted from an edge node serving as an end point of an ME. In a relay node of the ME, a route control table used for OAM frame control is provided, and a filter is generated by snooping of the OAM frame. Furthermore, when the relay node does not support the OAM function, the MEGID is denoted by a VLAN tag and the route control is made using the snooping function of each VLAN tag. | 08-13-2009 |
| 20090232005 | IP Network and Performance Monitoring Using Ethernet OAM - Network and performance monitoring in a link state protocol controlled Ethernet network. A first node receives a network layer monitoring command from a network layer monitoring requestor. The monitoring command is directed to a second node. The first node resolves the network layer monitoring command into one or more Ethernet OAM command(s); The first node sends the Ethernet OAM command(s) to the second node, receives the results of the Ethernet OAM command(s) from the second node; and returns the results of the Ethernet OAM command(s) in the form of a network layer response to the network layer monitoring requestor. Furthermore, network layer monitoring commands may be one or more performance monitoring commands, and the Ethernet OAM commands can include Y.1731 commands. An IP flow can be adjusted between the first node and the second node in response to the network layer response returned to the network layer monitoring requestor. | 09-17-2009 |
| 20090232006 | Continuity Check Management in a Link State Controlled Ethernet Network - An OAM link trace message is sent from a source node to a target node in a link state protocol controlled Ethernet network. The link trace message using an 802.1ag format except, as a destination address, it uses either the unicast Ethernet MAC node ID of the target node, or the multicast destination address of the service instance. A method of network topology verification in a link state protocol controlled Ethernet network checks the link state protocol database at a node to ascertain the control plane topology view of at least part of the network. It then executes one or more Ethernet OAM commands from the node to ascertain the data plane topology view of the same part of the network. The control plane topology view of the network is compared to the data plane topology view of the network to see if they match. An error is flagged if they do not match. | 09-17-2009 |
| 20090238082 | TELECOMMUNICATION SYSTEM COMPRISING AN O&M (Operation and Maintenance) HIERARCHICAL LAYER STRUCTURE - A telecommunication system comprising an O&M (Operation and Maintenance) hierarchical layer structure comprising at least two O&M nodes in at least two hierarchical layers, where O&M actions may be initiated at said nodes. The system is arranged for generation of an O&M transaction identifier when an O&M action is initiated, and is transferred to all nodes in all management layers used for said O&M action, which is initiated inside an O&M session, allowing O&M actions and sessions to be tracked in the O&M hierarchical layer structure. The present invention also relates to a method for tracking O&M actions in an O&M hierarchical layer structure. | 09-24-2009 |
| 20100002591 | Communication System and Communication Apparatus - Communication time period measuring frames are simultaneously sent from an OAM adaptive device on a transmission side, to both a working path and a protection path. In an OAM adaptive device on a reception side, reception times of the frames having arrived from both the paths are checked so as to measure a time period difference between both the paths. The time period difference is fed back to a logic distance adjustment function of each PON section to determine required communication time periods of the PON sections respectively included in a working system and a protection system. Communication time periods of the working system and the protection system in a packet communication network are arbitrated in order to decrease a packet loss at line switching in a packet relaying network. | 01-07-2010 |
| 20100002592 | Ethernet Media Access Control Organization Specific Extension - An apparatus comprising a data framer configured to frame a Media Access Control (MAC) control message for transmission, the MAC control message comprising an organization specific identifier (OUI) and at least one type-length-value (TLV) comprising a type field, a length field, and a value field, wherein a format of the TLV is specified by the OUI, and wherein the value field comprises information related to operation, administration, and maintenance (OAM) features of a network. Also included is an apparatus comprising at least one component configured to implement a method comprising compiling an OAM message comprising a plurality of organization-specific TLVs and an organization unique identifier (OUI) that indicates an organization responsible for the format of the TLV, and transmitting the OAM message. | 01-07-2010 |
| 20100020698 | Communication apparatus and OAM frame transmission method - A disclosed communication apparatus of one embodiment of the present disclosure includes a transmitting unit including a counter for counting the number of transmitted data frames and indicating the counted number of the transmitted data frames as a counter value and a scheduler for determining a frame transmission order, and configured to transmit one or more data frames and a monitoring and control frame which includes the counter value; and a generating unit configured to generate the monitoring and control frame. When generating the monitoring and control frame, the generating unit corrects the counter value included in the monitoring and control frame according to the frame transmission order. | 01-28-2010 |
| 20100020699 | METHOD AND APPARATUS FOR OAM & P OF WIRELESS NETWORK - There is provided a system and method of operating, administering, managing and provisioning of a communications network. A network element enters the registration and discovery mode during its initial auto-configuration, restarting, restarting from different geological location, or forming peer-to-peer groups for self-organized and/or self-coordinated networks. Managing mode is entered after the network element completes its registration with the registrar server. | 01-28-2010 |
| 20100034097 | INFORMATION DISTRIBUTION APPARATUS AND COMMUNICATION SYSTEM - An information distribution apparatus which is connected to each of a plurality of communication systems for performing radio communication with a mobile terminal through a network by using each of a plurality of communication methods having a range in which available frequencies overlap and manages information on communication environments of the communication systems. The information distribution apparatus includes an OAM information collecting section for collecting OAM information from the communication systems, a database generating section for generating a database in which the communication environment information including the allocation state of a frequency band to each of the communication methods determined by using the OAM information and information on a variable frequency band and a fixed frequency band which are defined for each of the communication methods, and a distribution section for distributing the information included in the communication environment information to each of the communication systems. | 02-11-2010 |
| 20100067385 | Ethernet Architecture with Data Packet Encapsulation - A method of encapsulating data packets for use in a distributed computer network is disclosed. The method includes providing a data packet for transmission over the distributed computer network, the data packet selected from one of a customer data packet and an OAM data packet; and encapsulating the data packet with a medium access control outer packet. The disclosed data packet handling method includes receiving a data packet from a customer facing data port, the customer facing data port within a network node of a computer network; performing medium access control (MAC) learning for the received packet; determining whether the data port is a MAC-in-MAC port; performing a packet mapping to a destination address based on a service provider destination address; and encapsulating the received data packet with a header associated with the service provider. | 03-18-2010 |
| 20100110898 | Optical Network Terminal Management and Control Interface over Ethernet - An apparatus comprising a data framer configured to frame an external protocol extension message for transmission, the external protocol extension message comprising a header that indicates an external protocol extension and at least one type-length-value (TLV) comprising a type field, a length field, and a value field, wherein a format of the TLV is specified by a specific organization, and wherein the value field comprises information related to protocol functions external to the network. Also included is an apparatus comprising at least one component configured to implement a method comprising compiling an external protocol extension message comprising a plurality of TLVs and a header that indicates an external protocol extension, and transmitting the external protocol message. | 05-06-2010 |
| 20100118708 | METHOD, SYSTEM, AND DEVICE FOR CONFIGURING OPERATION, ADMINISTRATION AND MAINTENANCE PROPERTIES - A method for configuring operation, administration and maintenance (OAM) properties, a system for configuring OAM properties, and a node device are provided. The method includes: delivering a message carrying OAM property configuration indicating information; and flowing through a plurality of nodes to be configured in the process of delivering the message, and configuring, by each of the nodes to be configured, an OAM property of the present node according to the OAM property configuration indicating information in the message flowing through the present node. | 05-13-2010 |
| 20100128610 | METHOD FOR SUPPORTING SDH/SONET OAMP ON ETHERNET - An Ethernet MAC OAMP Control sublayer is provided for supporting SDH/SONET OAMP standard functionality in Ethernet Networks. In accordance with one embodiment, an Ethernet MAC OAMP Control sublayer is provided for processing Ethernet MAC OAMP Control frames. The MAC OAMP Control sublayer provides support for a MAC OAMP Client to implement all of the SDH/SONET OAMP standard functionality. The MAC OAMP Control frame provides support for SDH/SONET OAMP on Ethernet networks. The Network Equipment can use the MAC OAMP Control frames to communicate with the downstream and upstream Network Equipment about various OAMP events, requests, performance parameters, communications channels, maintenance, and test functionality. | 05-27-2010 |
| 20100142380 | MULTICASTING METHOD IN NETWORK INCLUDING T-MPLS NETWORK AND WDM NETWORK AND APPARATUS THEREFOR - A multicasting method and apparatus in a network including a transport multiprotocol label switch (T-MPLS) network and a wavelength division multiplexing (WDM) network are disclosed. At least one of first switches, connected to the T-MPLS network, second switches connected to the WDM network, and a switch hub establishes a multicasting path by using a label switch path (LSP) ID and a label switch router (LSR) ID, in which the first switch on the multicasting path multicasts a T-MPLS signal, the switch hub converts the T-MPLS signal into an optical multicasting signal and multicasts the converted optical multicasting signal, and the second switch receives the optical multicasting signal and multicasts it in units of the T-MPLS signal. | 06-10-2010 |
| 20100220598 | ATM CELL TRANSFER APPARATUS WITH HARDWARE STRUCTURE FOR OAM CELL GENERATION - An ATM (asynchronous transfer mode) cell transfer apparatus includes an input interface, a switch block, and an OAM cell processing hardware block having a memory unit. The input interface receives an SDH/SONET signal on each of a plurality of first transfer paths to output an input OAM cell corresponding to the SDH/SONET signal to one of a plurality of input ports of the switch block corresponding to the first transfer path for the SDH/SONET signal to be transferred. The switch block receives the input OAM (operation and maintenance) cell from the corresponding input port as an OAM input port to output to the OAM cell processing hardware block together with a port number of the OAM input port, and receives at least one output OAM cell from the OAM cell processing hardware block to output to at least one of the plurality of output ports based on the received output OAM cell. The OAM cell processing hardware block reads out the at least one output OAM cell corresponding to the input OAM cell from the memory unit based on the input OAM cell and the port number supplied from the switch block, and outputs the at least one output OAM cell to the switch block. | 09-02-2010 |
| 20100220599 | METHOD AND APPARATUS FOR SENDING AND RECEIVING ETHERNET PHYSICAL-LAYER OAM OVERHEAD - A method and an apparatus for sending an Ethernet physical-layer OAM overhead, and a method and an apparatus for receiving an Ethernet physical-layer OAM overhead are disclosed herein. A method for sending an Ethernet physical-layer OAM overhead includes: adjusting the order of sending a payload block and part of Inter-Packet Gaps (IPGs) in a data stream to be transmitted; and when receiving a request for sending an OAM overhead, substituting the OAM overhead for the part of IPGs, and sending the OAM overhead before sending the payload block. Through the present invention, the order of sending IPGs and payload blocks in an MAC data stream can be adjusted, and the OAM overhead can be sent in time. | 09-02-2010 |
| 20100238808 | CONNECTIVITY FAULT MANAGEMENT (CFM) AUTO-PROVISIONING USING VIRTUAL PRIVATE LAN SERVICE (VPLS) AUTO-DISCOVERY - Connectivity Fault Management (CFM) auto-provisioning using Virtual Private LAN Service (VPLS) auto-discovery is described. In one embodiment, an apparatus comprises VPLS logic and configuration logic. The VPLS logic is operable at least to receive and send configuration information for a VPLS instance, where the configuration information comprises: a first value that uniquely identifies the VPLS instance; and a plurality of second values that respectively and uniquely identify a plurality of network elements that are operable to provide the VPLS instance. The configuration logic is operable at least to automatically configure, based on the first value and on the plurality of second values, a CFM association and a local maintenance endpoint (MEP) for the VPLS instance on the apparatus. | 09-23-2010 |
| 20100246406 | ROUTE CONVERGENCE BASED ON ETHERNET OPERATIONS, ADMINISTRATION, AND MAINTENANCE PROTOCOL - In an example embodiment, a method of route convergence is provided. In this method, a loss of connectivity is detected along a communication route by way of an Ethernet Operations, Administration, and Maintenance (OAM) protocol. Examples of Ethernet OAM protocols include Connectivity Fault Management protocol and Ethernet Local Management Interface protocol. Thereafter, a data link layer identifier associated with the communication route is identified and this data link layer identifier is mapped to a network layer address. Convergence on an alternate communication route can then be based on the mapped network layer address. | 09-30-2010 |
| 20100260053 | PROCEDURES, SYSTEMS, APPARATUSES, AND COMPUTER PROGRAMS FOR PERFORMANCE MONITORING OF A PACKET CONNECTION - Procedures, systems, apparatuses, and computer programs are disclosed for performance monitoring of a packet connection. In example embodiments, data is added to a performance monitoring packet at a network element, and the performance monitoring packet is then forwarded to an analysis element. Analysis of the data contained in performance monitoring packet may thereby be conducted at a location other than the receiving interface. | 10-14-2010 |
| 20100278048 | Network relay device, network, and network maintenance and operation method - A network relay device constituting a network includes a frame determination unit for referencing a protocol identifier contained in a frame from an external network relay device constituting another standard network different from the network, to determine whether or not the frame contains a confirmation frame for network operation, administration or maintenance, and a processing unit for performing operation, administration, or maintenance on the frame, when the frame determination unit determines that the frame is the confirmation frame. | 11-04-2010 |
| 20100290345 | GMPLS BASED OAM PROVISIONING - A method and network are described herein for provisioning Operations, Administration, and Maintenance (OAM) entities for a connection when setting-up the connection between an ingress edge node and an egress edge node. | 11-18-2010 |
| 20100302949 | FRAME LOSS MEASUREMENT METHOD, SYSTEM, AND APPARATUS - The number of data frames transmitted between two apparatuses is counted by a transmission counter, while the number of received frames is counted by a reception counter. When an OAM frame for frame loss measurement is transmitted, the value of the transmission counter is cached in a cache memory. At the time of generation of an OAM frame at an OAM frame generation unit, the value of the cache memory is used so as to generate an OAM frame carrying the value of the transmission counter at the time of transmission of the OAM frame transmitted previously. The frame loss is calculated from the difference of the value of the transmission counter carried in the OAM frame from the previous value and the difference of the value of the reception counter at the time of reception of the previous previous OAM frame from the previous value. | 12-02-2010 |
| 20100329125 | TIMING OVER PACKET PERFORMANCE - The invention is directed to a method and apparatus for providing improved packet over timing clock synchronization in a packet switching network using Operations, Administration, and Maintenance (OAM) tools to compensate for asymmetrical characteristics between forward and reverse data paths. | 12-30-2010 |
| 20110058483 | Forwarding Plane Data Communications Channel for Ethernet Transport Networks - Described is a process and system for providing an extensible forwarding plane data communications channel adapted to selectively support operations, administration and maintenance (OAM) activity within one or more different domains of an Ethernet transport network. The data communication channel is established using Ethernet protocol data units forwarded within the forwarding plane, between network elements. The Ethernet protocol data units can be Ethernet OAM frames modified to include an OpCode indicative of a maintenance communication channel. The OAM frames are generated at a selected one of the network elements (source), forwarded along the same network path as the Ethernet frames, and terminate at another network element (destination) associated with a maintenance level identified within the OAM frame. The source and destination network elements can reside on a domain boundary using the Ethernet OAM frames flowing therebetween to relay maintenance communications channel messages. | 03-10-2011 |
| 20110080836 | Method and Apparatus for Providing Bypass Connectivity Between Routers - Forwarding Adjacencies (FAs) can be set up between IP/MPLS routers without requiring a Routing Adjacency (RA) to be brought up for every FA. This enables increased bypass connectivity to be established between end-point routers in the IP/MPLS network without attendant additional processing associated with having dedicated RA for each FA. Where it is possible to modify the end-point routers, the physical ports may be configured to support stand-alone FAs. A configured FA at a physical port is then associated with an IP address of a remote end-point router and a connection within the bypass technology. OAM is used to verify connectivity and configuration across the FA. Alternatively, an emulated Ethernet LAN segment may be used for IP traffic to enable full mesh connectivity to be provided by the bypass technology while requiring only one or a small number of RAs to be implemented at each end-point router. | 04-07-2011 |
| 20110085446 | IMPROVEMENTS IN OR RELATING TO NETWORKS - A network comprising a plurality of nodes ( | 04-14-2011 |
| 20110096670 | METHODS AND APPARATUSES FOR PERFORMING SWITCHING AND FOR EXCHANGING MANAGEMENT-REQUESTED SWITCHING MESSAGES BETWEEN NODES FOR 1:1 BIDIRECTIONAL VIRTUAL LOCAL AREA NETWORK (VLAN) PROTECTION WITHOUT USING Y.1731-BASED AUTOMATIC PROTECTION SWITCHING (APS) MESSAGES - To perform protection switching between tunnels in a network, Y.1731-based APS messages are often sent from a management system to nodes at the tunnels' end-points. If the management system is located near one node (local node) and far away from the other node (remote node), the APS message, which operates at the Ethernet service layer, travels to the remote node slower than traffic over the tunnels. This slower transmission time may prevent the remote node from performing a switch within a desired timeframe. The disclosed embodiments include a 1:1 bidirectional VLAN-based protection arrangement that accomplishes a 50 millisecond switching time without using Y.1731-based APS messages. The embodiments accomplish this by sending a switching command from the management system to the local node and modifying a message already traveling from the local node to the remote node to include a switching message that causes the remote node to perform the switch. | 04-28-2011 |
| 20110110240 | ADJUSTMENT OF RADIO DETECTION LEVEL FOR REQUEST SIGNALS BASED OBSERVED FALSE DETECTION - The present invention relates to receiving access signals from a plurality of terminals over a radio channel and in particular to determining a detection threshold level on the radio channel. A detection threshold level should balance the risk of missed detections to the risk of false detections. A problem in finding an equilibrium threshold is the radio environment, with noise and interference, change and then also the radio false detections or missed detections change. According to the present invention some access signals can be identified as being not assigned and therefore not being in use, and any detection of a non-used signal is identified as a false detection. By monitoring the ratio of false detections vs. correct detections the threshold level for detection is tuned into an equilibrium level, and that is adapted to the changing radio environments. In addition the detection threshold level for access signals detection threshold for data and/or control signalling may be adjusted in relation to the access signal threshold level. | 05-12-2011 |
| 20110116384 | NETWORK CONNECTIVITY MANAGEMENT - Network connectivity management includes monitoring a pathway, wherein the pathway is configured to carry a circuit between multiple networks via a provider core network. A determination is made regarding whether the pathway is experiencing a connectivity issue. When it is determined that the pathway is experiencing a connectivity issue, then a message is generated indicating that the circuit is down. | 05-19-2011 |
| 20110128860 | Method of monitoring a tandem connection in a MPLS telecommunication network - It is disclosed a method of monitoring, a Multi-Protocol Label Switching network, a tandem connection of a Label Switched Path. The tandem connection to be monitored has an input node and an output node. The method comprises the following steps: receiving a first Operation Administration Management packet at the input node; and generating a second OAM packet at the input node. According to the invention, the following steps are further performed: a tandem connection header is inserted into the first OAM packet; both the first OAM packet with the tandem connection header and the second OAM packet are sent towards the output node; and the second OAM packet is identified according to the presence or absence of said tandem connection header. | 06-02-2011 |
| 20110128861 | Method and Apparatus for Supporting Mismatch Detection - The present invention relates to a method and a network node for service instance management in telecommunications network. According to the method a plurality of network paths are monitored. A number of network paths form a protection group associated with a service instance or group of service instances. The monitoring of the network paths includes periodic transmission of CCMs on the network paths. To facilitate detection of mismatches related to protection switching, some CCMs include a mismatch information element that specifies traffic status of a working network path and of a protection network path for a set of protection groups. The set of protections groups includes the protection groups which the monitored network path is a member of. A CCM that includes the mismatch information element also includes an indication bit that indicates presence of the mismatch information element in the CCM. | 06-02-2011 |
| 20110141911 | CONNECTIVITY FAULT MANAGEMENT TIMEOUT PERIOD CONTROL - Various exemplary embodiments relate to a method and related system and machine-readable medium including one or more of the following: receiving, at the MEP, a connectivity fault management (CFM) message; determining whether the CFM message includes an indication specifying a new value for a timeout factor; and when the CFM message includes an indication specifying a new value for the timeout factor, using the new value as the timeout factor. One or more of the following may also be included: when the CFM message does not include an indication specifying a new timeout factor, using a default value as the timeout factor; determining a timeout period using at least the timeout factor; determining whether the timeout period has elapsed since a most recent CFM message was received; and when the timeout period has elapsed since the last CFM message was received, determining that a timeout has occurred. | 06-16-2011 |
| 20110182185 | METHODS FOR ESTABLISHING A TRAFFIC CONNECTION AND AN ASSOCIATED MONITORING CONNECTION - A method for establishing a monitoring connection associated to a traffic connection established in a network e.g. of MPLS type, the method comprising the steps of: | 07-28-2011 |
| 20110182186 | METHODS FOR ESTABLISHING A TRAFFIC CONNECTION AND AN ASSOCIATED MONITORING CONNECTION - A method for establishing a traffic connection ( | 07-28-2011 |
| 20110188379 | METHOD AND APPARATUS FOR TRACING MOBILE SESSIONS - A method and apparatus for a method and apparatus for determining a path supporting a mobile session to identify the underlying transport elements supporting the path. In various embodiments mobile session tracing is implemented within a network such as a Long Term Evolution (LTE) wireless network by determining elements in a path supporting a mobile session of a user equipment (UE) having an specific identifier, such as an IP address or terminal identification number. | 08-04-2011 |
| 20110188380 | PACKET LOSS RATE DETECTION METHOD, APPARATUS, AND SYSTEM - A packet loss rate detection method, apparatus, and system relating to a Packet Switching Network (PSN) are provided, and the method includes: transmitting, by a transmitting end, data packets and Operation, Administration, and Maintenance (OAM) packets, and writing a counting value of the data packets into the subsequent OAM packets after a time delay, and receiving, by a receiving end, the data packets and the OAM packets, counting a number of the received data packets, and calculating a packet loss rate based on the number of the practically received data packets and the counting value carried in the OAM packets. | 08-04-2011 |
| 20110205907 | Fast LSP Alert Mechanism - A method performed on a network element employing Multiprotocol Label Switching (MPLS) to promulgate an alert to each Label Switch Router (LSR) along a Label Switch Path (LSP) by forwarding a labeled packet serving as an alert packet generated by an LSR in the LSP, the method including receiving the labeled packet by the network element from another LSR in the LSP, determining whether the labeled packet is the alert packet by checking a time to live value in an MPLS label header of the labeled packet, determining whether the labeled packet is an operation, administration and maintenance (OAM) packet based on a presence of a generic associated channel label, copying the labeled packet including a label stack of the labeled packet and forwarding the labeled packet to a next LSR in the LSP, whereby the latency in promulgating the alert to each of the LSRs in the LSP is reduced. | 08-25-2011 |
| 20110222412 | OPERATIONS, ADMINISTRATION, AND MANAGEMENT FIELDS FOR PACKET TRANSPORT - A network includes an egress node connected to an ingress node via a network path. The egress node is configured to receive, from the ingress node, a group of packets via the network path, where each packet includes an operations, administration, and management (OAM) field appended to the packet, and where the OAM field stores OAM information. The egress node is further configured to read the OAM information from the packets; analyze the OAM information, associated with one or more of the packets, to determine that a network condition exists on the network path; and notify the ingress node that the network condition exists to permit the ingress node to perform a rerouting operation. | 09-15-2011 |
| 20110222413 | COMMUNICATING NETWORK PATH AND STATUS INFORMATION IN MULTI-HOMED NETWORKS - An example network system includes a layer two (L2) device and a layer three (L3) device. The L2 device includes a control unit is configured to determine a preferred network path from a first L2 network in which the L2 device resides to an intermediate L3 network in which the L3 device resides that couples the first L2 network to a second L2 network having a second L2 device. The control unit includes a management endpoint (MEP) module. The MEP module executes an operations, administration, and management (OAM) protocol to monitor the first L2 network and output an L2 frame in accordance with the OAM protocol to the L3 device to notify the L3 device that it is within the preferred network path. A MEP module of the L3 device executes an OAM protocol that outputs L2 frames to the L2 device indicating the status of the L3 network. | 09-15-2011 |
| 20110249567 | INTER-WORKING OF EFM-OAM AND CFM-OAM FOR MOBILE BACKHAUL NETWORKS - On a first network element in a radio access network (RAN), supporting operations, management and administration (OAM) between network elements that support Ethernet in the first mile (EFM) and network elements that support connectivity fault management (CFM) in the radio access network by receiving an EFM message from a second network element that supports EFM, wherein the second network element is in the RAN and wherein the EFM message includes OAM data; converting the OAM data from the EFM message into a sub-type-length-value (sub-TLV) of a CFM message; and transmitting the CFM message including the OAM data in the sub-TLV to a third network element that supports CFM, wherein the third network element is in the RAN, whereby an end-to-end OAM sublayer is provided in the RAN by conversion of OAM data from EFM to CFM. | 10-13-2011 |
| 20110255417 | AUTOMATIC MEP PROVISIONING IN A LINK STATE CONTROLLED ETHERNET NETWORK - Ethernet OAM MEPs are automatically configured in a link state protocol controlled Ethernet network. A node operating in the link state protocol controlled Ethernet network receives a Link State PDU (LSP) containing a TLV having a MEP associated with the Ethernet MAC node ID of a second node in the link state protocol controlled Ethernet network, where the path between the first and second node includes a plurality of links. The node updates a forwarding table to indicate an association between the MEP ID and a Ethernet MAC node ID of the second node. An Ethernet OAM maintenance endpoint is produced in a link state protocol controlled Ethernet network by hashing a Sys-ID to produce a MEP; storing the MEP in a TLV; and forwarding the TLV over the link state protocol controlled Ethernet network in an LSP. | 10-20-2011 |
| 20110267961 | CONNECTIVITY FAULT MANAGEMENT FOR ETHERNET TREE (E-TREE) TYPE SERVICES - A Maintenance Association and corresponding method for configuring maintenance entities for Ethernet Tree (E-Tree) type service instances. A root MEP communicates with each of a plurality of leaf MEPs. Remote MEP state machine instances are activated within the root MEP for each of the plurality of leaf MEPs. Within each leaf MEP, however, only the remote MEP state machine instance for the root MEP is activated while leaving the remote MEP state machine instances for all other leaf MEPs in an inactive state in which Connectivity Check Messages (CCMs) are not exchanged. | 11-03-2011 |
| 20110286337 | Topological Location Discovery in an Ethernet Network - A topology aware entity, such as an OSS (Operations Support System), an NMS (Network Management System) or an RM (Resource Manager), associated with an Ethernet network is configured to execute a method for topological location discovery of nodes that are added to the network. According to the method, the topology aware entity receives (step | 11-24-2011 |
| 20110286338 | METHOD FOR SUPPORTING SDH/SONET OAMP ON ETHERNET - An Ethernet MAC OAMP Control sublayer is provided for supporting SDH/SONET OAMP standard functionality in Ethernet Networks. In accordance with one embodiment, an Ethernet MAC OAMP Control sublayer is provided for processing Ethernet MAC OAMP Control frames. The MAC OAMP Control sublayer provides support for a MAC OAMP Client to implement all of the SDH/SONET OAMP standard functionality. The MAC OAMP Control frame provides support for SDH/SONET OAMP on Ethernet networks. The Network Equipment can use the MAC OAMP Control frames to communicate with the downstream and upstream Network Equipment about various OAMP events, requests, performance parameters, communications channels, maintenance, and test functionality. | 11-24-2011 |
| 20110299405 | LABEL SWITCHED PATH OAM WRAPPER - Methods and devices for logically segmenting an LSP so that OAM DTUs may be used to determine the performance and/or the status of LSP segments. To segment a previously determined LSP, a dedicated subpath (a logical LSP) within that predetermined LSP is defined between two LSRs that are capable of processing OAM DTUs. The source node (source LSR) establishes a logical LSP between itself and the destination node (destination LSR) using an LDP. In doing this, the logical LSP traverses a specific path and transits through specific nodes in that path. The source node then transmits an OAM DTU or any other specialized DTU to the destination node using a label specifically associated with the logical LSP that was established. The characteristic of the specific path traversed by the logical LSP can thus be determined by when, how, and if the specialized DTU is received by the destination node. | 12-08-2011 |
| 20120014260 | COMMUNICATION DEVICE IN COMMUNICATION NETWORK AND COMMUNICATION CONTROL METHOD - A communication control method and a communication device are provided by which the communication quality of an upper layer can be ensured at a lower layer. The communication device that is connected to another communication device to constitute a network, includes a upper-layer quality detection section ( | 01-19-2012 |
| 20120039183 | METHOD AND APPARATUS FOR FACILITATING SENSING IN COGNITIVE RADIO COMMUNICATIONS - Techniques are provided for the suppression of reference signal transmissions to enable sensing in cognitive radio communications. In one example, there is provided a method, operable by a network entity (e.g., evolved Node B), that may involve communicating with another network entity to determine parameters of a quiet period, the parameters comprising at least one of when the quiet period occurs and duration of the quiet period. The method may involve transmitting a reference signal in a first channel exclusively during a first plurality of subframes of a first frame period, wherein the first frame period further includes a quiet period during which no signals are transmitted, and performing during the quiet period a sensing operation with respect to the first channel. | 02-16-2012 |
| 20120063325 | FAILURE LOCALISATION IN A MPLS-TP NETWORK - The present invention relates to methods and arrangements in an MPLS-TP network, comprising a plurality of interconnected routers configured for MPLS-TP, wherein at least a first router is defined as an originating Maintenance End Point, MEP, a second router is defined as a targeting MEP and the third router is defined as a Maintenance Intermediate Point, MIP. The basic idea of the present invention is to associate a table with each MIP and MEP, wherein the tables comprises information related to the MEPs of the MPLS-TP network and the information from the tables is inserted in the reply packets and forwarded packets. By using this information, the OAM packets can find the subsequent MIP or MEP and failure localization may be performed. | 03-15-2012 |
| 20120069741 | METHOD AND APPARATUS FOR DETECTING ETHERNET OPERATION, ADMINISTRATION AND MAINTENANCE (OAM) - A method for detecting OAM includes: sending a detection maintenance entity OAM command to a network element equipment board after a user activating an established maintenance entity; receiving a reply message sent by the network element equipment board and acquiring replying board information and monitoring ID information matched with the maintenance entity; and starting a timer, and detecting whether preconfigured heartbeat detection time is reached, if not reached, detecting whether a OAM detection result which is reported by the network element equipment board and is matched with a monitoring ID is received, if received, transferring the OAM detection result to a network management interface to be displayed; and if reached, sending the heartbeat detection message, and detecting whether the OAM detection result which is reported by the network element equipment board and is matched with the monitoring ID is received after receiving a heartbeat reply message. | 03-22-2012 |
| 20120093002 | COMMUNICATIONS SYSTEM AND RELATED METHOD FOR REDUCING CONTINUITY CHECK MESSAGE (CCM) BURSTS IN CONNECTIVITY FAULT MANAGEMENT (CFM) MAINTENANCE ASSOCIATION (MA) - In accordance with a non-limiting example, a system and method minimizes collisions between transmitted connectivity fault management (CFM) packets. Maintenance association endpoints are formed from a plurality of network switch elements to form a maintenance association. The clocks between each network switch element within the maintenance association are synchronized. A unique transmission window is assigned to each maintenance association endpoint as part of the maintenance association. A respective CFM packet is transmitted as a continuity check message (CCM) within the unique transmission window. | 04-19-2012 |
| 20120106356 | Method of MDT information logging and reporting - A method of MDT information logging and problem event reporting is provided. The method supports provisioning of reference events to enable correlation of system time and the problem occurrence. In one embodiment, a problem event report includes time information directly or indirectly related to a reference event. A method of handling battery condition is also provided. The method supports autonomously suspending or resuming OAM activities in MDT based on predefined battery condition. In one embodiment, a testable battery condition handling is designed for MDT logging. | 05-03-2012 |
| 20120120809 | GMPLS BASED OAM PROVISIONING - A method and network are described herein for provisioning Operations, Administration, and Maintenance (OAM) entities for a connection when setting-up the connection between an ingress edge node and an egress edge node. | 05-17-2012 |
| 20120127866 | REAL-TIME NETWORK MEASUREMENT - A method of operation within a device coupled to a network. A first set of data is received from a first data path of the network. A first set of measurement information is identified from the first set of data, and a quality of the first data path is determined based on the first set of measurement information. A second set of data is then selectively transmitted via either the first data path or a second data path of the network, based on the quality of the first data path. | 05-24-2012 |
| 20120140639 | CONVERGENCE FOR CONNECTIVITY FAULT MANAGEMENT - A solution for convergence for connectivity fault management includes, at a device having a network interface, maintaining a continuity state. The continuity state is associated with a Connectivity Fault Management (CFM) Maintenance Association (MA) comprising multiple Maintenance End Points (MEPs) including a first MEP associated with the device. The maintaining includes setting the state to a value indicating continuity of the MA if a converged notification is received from the first MEP. The maintaining also includes setting the state value to a value indicating loss of continuity of the MA if a predetermined number of echo packets sent by the device towards the MEPs other than the first MEP are not received by the device within a predetermined time period. | 06-07-2012 |
| 20120155282 | SYSTEM AND METHOD IN A COMMUNICATION NETWORK OF DYNAMICALLY ASSIGNING A MULTIMEDIA BROADCAST/MULTICAST SERVICE BEARER TO A MULTICAST CHANNEL - Methods for dynamically assigning a multimedia broadcast/multicast service (MBMS) bearer to a Multicast Channel (MCH) in a communication network include a logical server: receiving a MBMS configuration for the communication network; receiving a request for a MBMS bearer within a service area, wherein the request specifies a QoS requirement for the MBMS bearer; inspecting the MBMS configuration to determine if an existing MCH in the service area meets the QoS requirement for the MBMS bearer; based on the inspecting, assigning the MBMS bearer to the existing MCH or assigning the MBMS bearer to a new MCH. | 06-21-2012 |
| 20120155283 | INTERWORKING FOR OAM INFORMATION EXCHANGE | 06-21-2012 |
| 20120163189 | Internetworking Framework for Multi-Protocol Label Switching-Transport Profile and Operation Administration and Maintenance Protocols - Systems, methods, and apparatuses for BFD to Y.1731 internetworking are described. In one embodiment, a method of processing defect conditions in a maintenance endpoint (MEP) of a first domain, the MEP a component of a bidirectional forwarding detection (BFD) to Y.1731 interworking interface (IWF) in a multi-protocol label switching (MPLS) network is described. | 06-28-2012 |
| 20120163190 | Methods and Arrangement in a MPLS-TP Telecommunications Network for OAM Functions - Extensions to a Multi-Protocol Label Switching (MPLS) frame forwarding procedure in an MPLS node are described. A context descriptor is defined for each frame received on a connection terminated at that node, and where this context descriptor is provided together with the frame to a corresponding function (e.g. Operations, Administration and Maintenance, OAM) if needed. The context descriptor is constructed based on key attributes characterizing the terminated connection, over which the frame is received, and addresses a particular function endpoint (Maintenance Endpoints (MEPs), Selector Bridge of a protection instance etc.) of a corresponding function (OAM, protection, etc.). In one embodiment, a Multi-Protocol Label Switching (MPLS) node is directed to check not only the first but also the second label, and not to drop the first label (and the label space if relevant) when the second label is the Generic Association Channel Label (GAL). In this way, the original context of the packet is kept (i.e. the information relating to the connection over which the packet was received), and can be used for de-multiplexing to the corresponding MEP. Then the identifiers within the OAM payload can be used for verification of the connectivity. Other embodiments describe alternative solutions. | 06-28-2012 |
| 20120176911 | SUPPORTING OAM ON PROTECTING CONNECTIONS IN SHARED MESH PROTECTION ENVIRONMENT - A method for detecting the liveliness and synchronizing the control-plane and data-plane on protecting connections in a shared mesh network environment through methods for probing the protecting connection conditions by sending in-band messages; and synchronization of control plane and data plane by using LSP-ping messages on the protecting connections. | 07-12-2012 |
| 20120224488 | METHOD OF CONNECTIVITY MONITORING BY SUBSCRIBER LINE TERMINATING APPARATUS - A method carrying out connectivity monitoring of an entire network by: transmitting a CCM frame in which the transmission source is set to a multicast MAC address, from a higher level side (center side) terminating device to a plurality of lower level side (base point side) terminating devices; transmitting a CCM frame in which a unicast MAC address is set, from the lower level side terminating devices to the higher level side terminating device; transmitting a CCM frame in which a multicast MAC address is set, from a controller to the higher level side terminating device or the lower level side terminating devices; and transmitting a CCM frame in which a unicast MAC address is set, from the higher level side terminating device or the lower level side terminating devices to the controller. | 09-06-2012 |
| 20120287795 | Continuity Check Management in a Link State Controlled Ethernet Network - An OAM link trace message is sent from a source node to a target node in a link state protocol controlled Ethernet network. The link trace message uses an 802.1 | 11-15-2012 |
| 20120294154 | ETHERNET OAM TO ATM OAM INTERWORKING FOR LOOPBACK CAPABILITY - In general, techniques are described for interworking between Ethernet organization, administration, and maintenance (OAM) frames and Asynchronous Transfer Mode (ATM) ATM OAM cells. For example, an access node in an Ethernet and ATM network may implement the techniques. The access node comprises an Ethernet interface that receives an Ethernet OAM Loopback frame from a device within an Ethernet network. The access node includes a control unit that constructs an ATM OAM End-to-End Loopback cell from the Ethernet OAM Loopback frame, and an ATM interface that transmits the ATM OAM End-to-End Loopback cell from the access node towards a virtual circuit connected to a subscriber device to verify connectivity from the originating device within the Ethernet network to the subscriber device within the ATM network. | 11-22-2012 |
| 20120320758 | LOSS MEASUREMENT FOR MULTICAST DATA DELIVERY - A method of measuring loss in a multicast transmission in a network is described. Service frames including a service multicast destination address are sent from a source node towards a receiving node. A counter of the number of service frames sent is maintained at the source node. This counter is periodically read, and its value copied into a loss measurement OAM frame. The loss measurement OAM frame includes a unique identifier and an OAM destination address which is different to the service multicast destination address, and is sent from the source node towards the receiving node. Every time the sent frames counter is read, a measurement indicator frame is also sent from the source node towards the receiving node. The measurement indicator frame includes the unique identifier so that it can be related to the loss measurement OAM frame. The measurement indicator frame also includes the service multicast destination address, although the measurement indicator frame is distinguishable from the service frames. The receiving node eventually receives the loss measurement OAM frame and the measurement indicator frame, and calculates the number of lost or delayed service frames by comparing the number of service frames received at the receiving node at the time the measurement indicator frame is received with the sent frames counter value contained in the loss measurement OAM frame. The calculation is only performed when the loss measurement OAM frame and measurement indicator frame having the same identifier have been received by the receiving node. node. | 12-20-2012 |
| 20130010605 | Generic Monitoring Packet Handling Mechanism for OpenFlow 1.1 - A method implemented by a network element monitor OpenFlow data flows and enable operations, administration and management (OAM) functionality in OpenFlow. The method inserts OpenFlow OAM packets into an OpenFlow data flow to monitor the OpenFlow data flow, wherein inserted OpenFlow OAM packets have fate sharing with data packets in the OpenFlow data flow. The method comprises the steps of receiving by the network element the OpenFlow OAM packets from a source through a port of the network element, matching by an OpenFlow switch module using a matching structure of OpenFlow data packets received by the network element to identify the OpenFlow OAM packets, and forwarding the identified OpenFlow OAM packets to a flow table or group table of the OpenFlow switch module to aggregate the OpenFlow OAM packets with a corresponding OpenFlow data flow. | 01-10-2013 |
| 20130010606 | Method and Apparatus For Remote Monitoring of FEMTO Radio Base Stations - A method for operation and maintenance of Access Points in a wireless communications network, and a network node and an access point for use in such a network. Access points are used for connecting wireless networks to core networks. The method comprises the step of first receiving, at a network node, an on-demand triggered request for status information, wherein the request includes an access point identity. The network node investigates, using the received access point identity, if the access point is registered. If the access point is registered, then the network node uses the access point identity to retrieve access point address information. The network node uses the retrieved address information to establish a connection with the access point. Thereafter the network node receives access point status information. | 01-10-2013 |
| 20130010607 | SCALABLE CONNECTIVITY FAULT MANAGEMENT IN A BRIDGED/VIRTUAL PRIVATE LAN SERVICE ENVIRONMENT - A first network element that is to be coupled with a second network element over a first network in the same domain is described. The first network element includes a connectivity check detection module and a connectivity check fault state change module. The connectivity check detection module detects, according to a first protocol, a connectivity status of a local maintenance endpoint on a second network changing between not active and active. The connectivity check fault state change module creates and sends a first fault state change message, according to a second protocol, in response to the connectivity status of the local maintenance endpoint changing from not active to active instead of forwarding connectivity check messages periodically received by the first network element to a remote maintenance endpoint coupled to the second network element over a third network. | 01-10-2013 |
| 20130051243 | SYSTEMS AND METHODS FOR IMPLEMENTING SERVICE OPERATION, ADMINISTRATION, AND MANAGEMENT FOR HAIRPINNED ETHERNET SERVICES - In accordance with embodiments of the present disclosure, a method may include designating one of at least one maintenance point associated with a physical port of a line card as a primary maintenance point, the primary maintenance point comprising either a UP-Maintenance Entity Group End Point (UP-MEP) or one Maintenance Entity Group Intermediate Point (MIP). The method may also include configuring the line card such that the line card stores source addresses of Service Operation, Administration, and Management (SOAM) frames communicated by the primary maintenance point. The method may further include configuring the line card such that the line card does not store source addresses of Service Operation, Administration, and Management frames communicated by maintenance points associated with the physical port other than the primary maintenance point. | 02-28-2013 |
| 20130051244 | NETWORK OPTIMISATION - A SON algorithm is described in which performance targets are defined and evaluated. The evaluation of a performance target includes using or setting an evaluation period defining a time period over which the performance target is evaluated and using or setting an evaluation frequency defining how often the performance target is evaluated. The performance targets are used for optimising a configuration of a mobile telecommunication system. | 02-28-2013 |
| 20130051245 | Interworking Between Ethernet and MPLS - A source node for addressing target nodes ( | 02-28-2013 |
| 20130070612 | Method and Communication Network Node for Improving Communication Performance - The present solution relates to enabling improved performance for a user equipment UE ( | 03-21-2013 |
| 20130121164 | One to Many OAM/Protection Inter-Working Function - A novel and useful one-to-many OAM/protection inter-work function (IWF). The mechanism stitches a single OAM session (e.g., a CCM session) on a multi-traffic class (TC) M-domain to multiple OAM-sessions (which monitor different transport entities or connections) on a single-TC S-domain using duplication and filtering of OAM messages at the ENNI. Using the OAM sessions, protection decision manipulation is performed to coordinate the protection decisions of the different connections serving the different TCs of the same S-domain endpoint. The manipulation includes manipulating fields in one OAM-session as a function of information gained from an OAM-session monitoring a different transport entity such that the first connection is forced to follow protection decisions based on the second OAM-session. Bundled single-TC connections are forced to take protection decisions that steer user traffic through transport entities provisioned in advance to share the same fate in the event of link or equipment failures. | 05-16-2013 |
| 20130121165 | COMMUNICATION DEVICE, AND SIGNAL DEGRADATION MONITORING SYSTEM AND METHOD - A communication device includes a receiving unit configured to receive a frame via a connected packet network, a transmitting unit configured to transmit the received frame and a self-originating frame to the packet network, a monitoring unit configured to monitor a flow rate of the transmitted frames, a transmission cycle setting unit configured to cause a transmission cycle of the self-originating OAM frame to be a predetermined transmission cycle set for a normal condition when the flow rate of the frames is greater than or equal to a predetermined threshold, and a transmission cycle calculating unit configured to calculate a transmission cycle of the OAM frame that can compensate for a shortfall in the number of the transmitted frames, the transmission cycle calculating unit being configured to cause the calculated transmission cycle to be a transmission cycle of the self-originating OAM frame when the flow rate of the frames is less than the predetermined threshold. | 05-16-2013 |
| 20130128749 | SERVICE STATUS SIGNALING IN ETHERNET NETWORKS - 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. | 05-23-2013 |
| 20130128750 | FAULT SIGNALING FOR ETHERNET - A method may include receiving a message from a first Ethernet interface in a second Ethernet interface, wherein the message includes a first attribute indicative of an Ethernet service at the first interface according to a first operation, administration, or management (OAM) protocol. The method may further include mapping the first attribute to a second attribute, wherein the second attribute is in accordance with a second OAM protocol different than the first OAM protocol. The method may further include performing an operation at the second interface based on the second attribute. | 05-23-2013 |
| 20130155871 | Method and system for controlling MBMS service - The disclosure provides a method for controlling a Multimedia Broadcast Multicast Service (MBMS), which includes: a network side processes uplink feedback information from User Equipment (UE) and makes an Activation/Deactivation determination on an MBMS service according to the processing result; and the network side activates/deactivates the MBMS service according to the determination result. The disclosure also provides a system for controlling an MBMS service correspondingly. The disclosure can control the activation/deactivation of an MBMS service according to uplink feedback information from UE, thereby improving system efficiency. | 06-20-2013 |
| 20130170362 | RADIO COMMUNICATION SYSTEM AND METHOD, RADIO TERMINAL, RADIO STATION, AND OPERATION ADMINISTRATION AND MAINTENANCE SERVER APPARATUS - A system includes: first and second radio stations (eNB | 07-04-2013 |
| 20130194932 | CARRIER ETHERNET SERVICE BANDWIDTH ALLOCATION SYSTEMS AND METHODS - 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. | 08-01-2013 |
| 20130201837 | Method and device for conveying OAM messages across an inter-carrier network - A method and a device for conveying at least one OAM message in a network formed of several segments that are operated by at least two carriers. The at least one OAM message includes a digital signature of a maintenance end point. The at least one OAM message is sent from the maintenance end point towards at least one maintenance point. Furthermore, a communication system is described with the device. | 08-08-2013 |
| 20130223233 | METHOD FOR MINIMIZATION OF DRIVE TESTS, METHOD FOR COLLECTING TERMINAL INFORMATION, TERMINAL, AND NETWORK ELEMENT - The present invention discloses a method for minimization of drive tests, a method for collecting terminal information, a terminal, and a network element, which belongs to the field of communication technologies. The method includes: in a process of activating a minimization of drive tests MDT task, checking, by a network element, a consent type of a user corresponding to a selected terminal; sending a MDT task activation command to the selected terminal according to a check result of the consent type; after receiving measured data reported by the selected terminal, performing an operation according to a check result of the consent type. In embodiments of the present invention, check on user consent is implemented in a network detection process, thereby avoiding a case that a user equipment is forced to report personal information without permission of the user and improving the user experience. | 08-29-2013 |
| 20130229921 | METHOD AND APPARATUS FOR INTERNETWORKING ETHERNET AND MPLS NETWORKS - MPLS networks offering PW or VPLS services may be interconnected with Ethernet networks implemented according to 802.1ah or 802.1Qay. The MPLS network may be a core and offer services to the Ethernet access networks, or vise-versa. Additionally, a mixture of different types of access networks may be interconnected by an MPLS core or an Ethernet core. Both network interworking and service interworking are provided. OAM fault detection may be implemented via maintenance entities extending across the network or end to end depending on the combination of networks and services offered by the networks. | 09-05-2013 |
| 20130235734 | METHOD AND APPARATUS FOR SENDING AND RECEIVING ETHERNET PHYSICAL-LAYER OAM OVERHEAD - A method and an apparatus for sending an Ethernet physical-layer OAM overhead, and a method and an apparatus for receiving an Ethernet physical-layer OAM overhead are disclosed herein. A method for sending an Ethernet physical-layer OAM overhead includes: adjusting the order of sending a payload block and part of Inter-Packet Gaps (IPGs) in a data stream to be transmitted; and when receiving a request for sending an OAM overhead, substituting the OAM overhead for the part of IPGs, and sending the OAM overhead before sending the payload block. Through the present invention, the order of sending IPGs and payload blocks in an MAC data stream can be adjusted, and the OAM overhead can be sent in time. | 09-12-2013 |
| 20130242753 | CELL TRANSFER APPARATUS WITH HARDWARE STRUCTURE FOR OAM CELL GENERATION - An ATM (asynchronous transfer mode) cell transfer apparatus includes an input interface, a switch block, and an OAM cell processing hardware block having a memory unit. The input interface receives an SDH/SONET signal on each of a plurality of first transfer paths to output an input OAM cell corresponding to the SDH/SONET signal to one of a plurality of input ports of the switch block corresponding to the first transfer path for the SDH/SONET signal to be transferred. The switch block receives the input OAM (operation and maintenance) cell from the corresponding input port as an OAM input port to output to the OAM cell processing hardware block together with a port number of the OAM input port, and receives at least one output OAM cell from the OAM cell processing hardware block to output to at least one of the plurality of output ports based on the received output OAM cell. The OAM cell processing hardware block reads out the at least one output OAM cell corresponding to the input OAM cell from the memory unit based on the input OAM cell and the port number supplied from the switch block, and outputs the at least one output OAM cell to the switch block. | 09-19-2013 |
| 20130279346 | RELAY NODE RELATED MEASUREMENTS - A method for relay node related measurements is provided. The method includes the following steps: obtaining air interface related measurements; and forming form the measurements at least one merely relay node related measurement result. The method can facilitate use of relay nodes and guarantee the advantages provided by the relay nodes. | 10-24-2013 |
| 20130286850 | Method of monitoring a tandem connection in a MPLS telecommunication network - It is disclosed a method of monitoring, a Multi-Protocol Label Switching network, a tandem connection of a Label Switched Path. The tandem connection to be monitored has an input node and an output node. The method comprises the following steps: receiving a first Operation Administration Management packet at the input node; and generating a second OAM packet at the input node. According to the invention, the following steps are further performed: a tandem connection header is inserted into the first OAM packet; both the first OAM packet with the tandem connection header and the second OAM packet are sent towards the output node; and the second OAM packet is identified according to the presence or absence of said tandem connection header. | 10-31-2013 |
| 20130286851 | COMMON RADIO ELEMENT APPLICATION MANAGER FOR WIRELESS SMALL CELLS - A multi-modal multi-modulation base station such as a small cell is disclosed. The small cell can include multiple radio devices that can be configured to communicate with user devices using different protocols and different frequencies. The base station includes a backhaul interface to core networks that can also operate according to multiple protocols. A common radio element application manager (CREAM) control operations of the radio devices including core network connectivity, mode-to-mode communications, and synchronization of small cell features. CREAM operations include self-organizing network functions such as automatic neighbor relations, mobility optimization, load balancing, and inter-cell interference coordination. | 10-31-2013 |
| 20130301423 | METHOD, SYSTEM AND APPARATUS OF TIME-DIVISION-DUPLEX (TDD) UPLINK-DOWNLINK (UL-DL) INTERFERENCE MANAGEMENT - Some demonstrative embodiments include devices, systems and/or methods of Time-Division Duplexing (TDD) Uplink-Downlink (UL-DL) interference management. Some embodiments include transmitting a message including a channel quality parameter and a Time-Division-Duplex (TDD) configuration update to at least one other base station of a cellular cell, deciding if the cellular cell is to be operated in a cluster based on the channel quality parameter value, and coordinating an adjustment of uplink-downlink configuration according to a traffic condition. | 11-14-2013 |
| 20130315071 | APPARATUS AND METHOD FOR CONTROLLING A TRANSMISSION INTERVAL OF MAINTENANCE PACKETS IN A COMMUNICATION NETWORK - An apparatus controls a transmission interval of maintenance packets in a communication network. The apparatus calculates, within a first bandwidth available for the transmission and reception of packets, a second bandwidth that is free in the apparatus and usable for transmitting and receiving the maintenance packets for maintenance of the communication network. The apparatus determines a transmission interval of maintenance packets in accordance with the calculated second bandwidth and transmits the maintenance packets to another apparatus in the communication network at the determined transmission interval. | 11-28-2013 |
| 20130329565 | SYSTEMS AND METHODS FOR OPERATIONAL SIMPLIFICATION OF CARRIER ETHERNET NETWORKS - A Carrier Ethernet method includes receiving a request to initiate an Ethernet Operations, Administration, and Maintenance (OAM) session at a local device, setting up the OAM session at the local device responsive to the request, transmitting a Protocol Data Unit (PDU) from the local device to a remote device with information related to the OAM session and the request contained therein, and receiving the PDU at the remote device and setting up the OAM session at the remote device based on the information in the PDU. The OAM session can include Ethernet Frame Loss Measurement and can be initiated only at the local device without requiring operator involvement at the remote device | 12-12-2013 |
| 20130329566 | OAM Power Packet - A method and apparatus are provided for determining the power cost of transmitting packets along a specified path. A particular type of OAM packet is transmitted along the path by a first node, and each node along the path adds its power cost of transmitting packets to the OAM packet. Upon reaching the end of the path, the OAM packet is returned to the first node where the power cost of the total path is determined and stored in association with the path. | 12-12-2013 |
| 20130336128 | Intelligent Network Diagnosis And Evaluation Via Operations, Administration, And Maintenance (OAM) Transport - An operation, administration, and maintenance data sink may receive an event data packet. The event data packet may be processed and transmitted based on instructions from a controller, wherein the controller may regulate the transmission of the processed event data packet based on network conditions. | 12-19-2013 |
| 20130336129 | Multipurpose Use of Delay Measurement Message Buffer for Software Processing of Delay Measurement Response - In accordance with the present disclosure, a method may include receiving a delay measurement message frame at a responder maintenance end point from a controller maintenance end point. The method may further include writing an ingress time value to the delay measurement message frame upon receipt of the delay measurement message at the responder maintenance end point. The method may also include generating a delay measurement response frame based on the delay measurement message frame, the delay measurement response frame comprising an egress timestamp field having a value equal to the difference between a time at which the delay measurement response frame is transmitted from the responder maintenance end point and a time represented by the ingress time value. The method may additionally include transmitting the delay measurement response from the responder maintenance end point to the controller maintenance end point. | 12-19-2013 |
| 20140016479 | NETWORK SERVICES TESTING WITH PLUGGABLE TRANSCEIVERS - The disclosure relates to test-capable pluggable transceivers and network systems and methods using such transceivers. A central test server generates a test request and communicates to a mediation sub-system, which uses a common management protocol to communicate with a plurality of transceivers in the network. The mediation sub-system translates the test request into sub-tests and generates sequences of test-control commands for executing by specific transceivers to configure test logic deployed within the transceivers for testing designated network services, to generate test frames, and/or to process received frames to collect test results. | 01-16-2014 |
| 20140022910 | SIGNALING TRACING METHOD, APPARATUS AND SYSTEM - The present invention discloses a signaling tracing method, apparatus and system. In embodiments of the present invention, the signaling tracing configuration information sent by an OAM device carries a user equipment identifier, and therefore, even in a scenario that an access network and a core network are managed by different OAM devices, the OAM device of the access network can also initiate signaling-based signaling tracing configuration, so that a base station can initiate signaling tracing for the user equipment. | 01-23-2014 |
| 20140029441 | MULTI-HOP REFLECTOR SESSIONS - A method for measuring and reporting performance parameters in a network having at least one originator for generating test protocol data units, and multiple reflectors for relaying the test protocol data units along successive segments of a test path in the network. The method generates the test protocol data units at the originator and transmits the test protocol data unit along a test path that includes multiple reflectors. Each reflector relays the test protocol data unit to the next reflector along the test path. Measurements of performance parameters are collected from the multiple reflectors in the test protocol data unit by inserting timestamps into the test protocol data unit at the originator and each of the reflectors to identify the departure and arrival times for each test protocol data unit at the originator and each of the reflectors in both the downstream and upstream directions along the test path. | 01-30-2014 |
| 20140029442 | AUTOMATIC SETUP OF REFLECTOR INSTANCES - 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. | 01-30-2014 |
| 20140036689 | LABEL-BASED MEASUREMENT METHOD, APPARATUS, AND SYSTEM - Embodiments of the present invention provide a label-based measurement method, apparatus, and system. The method includes: allocating at least two labels to the same FEC; obtaining a label insertion mode for the at least two labels; receiving data packet, where one of the at least two labels is inserted in the data packet; and performing, according to the label insertion mode and the data packet, performance measurement on a network that the FEC passes through. By using the technical solutions provided in the embodiments of the present invention, a problem of network bandwidth occupation caused by inserting a test packet and an OAM packet during performance measurement and a problem of measurement result inaccuracy caused by OAM packet loss may be solved. | 02-06-2014 |
| 20140071831 | SYSTEM AND METHOD FOR CONGESTION NOTIFICATION IN AN ETHERNET OAM NETWORK - A network element in an Ethernet OAM network is operable to detect congestion associated with an OAM domain and generate a congestion notification to MEPs in the OAM domain using a modified Ethernet OAM protocol. When a network element detects congestion in one or more queues associated with an MEP in an OAM domain, it triggers a congestion state. The MEP transmits a congestion notification to other MEPs in the OAM domain. The notifying MEP, as well as other MEPs receiving the congestion notification, initiate a network management protocol message to a network management system for the OAM domain. The MEPs in the OAM domain may also propagate the congestion notification to MEPs in higher maintenance level OAM domains. | 03-13-2014 |
| 20140086064 | 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. | 03-27-2014 |
| 20140092751 | Ethernet Operation and Maintenance (OAM) with Flexible Forwarding - Methods, systems, and computer readable media for transmitting an OAM packet from a source network device to a destination network device are disclosed. They include generating an OAM protocol data unit (PDU) at the source network device, injecting the OAM PDU in an ingress packet processing pipeline, determining an egress interface of the source network device through which to transmit the OAM PDU to the destination network device, encapsulating the OAM PDU in one or more protocol headers in an egress packet processing pipeline, and transmitting the encapsulated OAM PDU from the egress interface as the OAM packet. The injected OAM PDU is associated with an indication to bypass at least a portion of ingress packet processing. | 04-03-2014 |
| 20140098675 | MPLS SEGMENT-ROUTING - MPLS segment routing is disclosed. In one embodiment, a first core router generates a first data structure that maps first portcodes to respective identities of first neighbor routers or respective first links, wherein the first portcodes identify respective first ports of the first core router, and wherein the first ports are coupled to the first neighbor routers, respectively, via the first links, respectively. The first core router generates and transmits a first link-state packet, wherein the first link-state packet comprises an identity of the first core router and the first data structure. | 04-10-2014 |
| 20140098676 | METHOD FOR MONITORING CONNECTIVITY BY MEANS OF SUBSCRIBER TERMINAL DEVICE, AND CONTROL METHOD THEREFOR - When a communications carrier uses another company's network as a relay network, it is necessary to monitor the health of and to perform maintenance for the lines from end to end in the other company's network as well as the network managed by this carrier. Terminal devices capable of terminating a CCM frame or other OAM signal are installed in users bases, and the health is monitored from end to end between the bases. Furthermore, a control device that controls the terminal devices is installed in the VLAN network used by the user, and remote control of the terminal devices is implemented from the controller. Table information held by the controller is managed collectively under the leadership of an operator, and information about the subordinate terminal devices connected to the controller is reported to the operator on the basis of results of the MAC learning by the controller. IDs managed by the carrier are specified in the connectivity monitoring segments by the operator, and connectivity can be monitored segment by segment. | 04-10-2014 |
| 20140133313 | TERMINAL SELECTION METHOD, NETWORK DEVICE, AND RADIO TERMINAL - In one embodiment, a mobility management device MME selects a Logged MDT implementation terminal that should implement a measurement process by Logged MDT, from among a plurality of radio terminals UE in a mobile communication system | 05-15-2014 |
| 20140140217 | Methods and Arrangements in an MPLS-TP Network - The present invention relates to methods and arrangements in an MPLS-TP network. comprising a plurality of interconnected routers configured for MPLS-TP, wherein at least a first router is defined as an originating Maintenance End Point, MEP, a second router is defined as a targeting MEP and the third router is defined as a Maintenance Intermediate Point, MIP. The basic idea of the present invention is to associate a table with each MIP and MEP, wherein the tables comprises information related to the MEPs of the MPLS-TP network and the information from the tables is inserted in the reply packets and forwarded packets. By using this information, the OAM packets can find the subsequent MIP or MEP and failure localization may be performed. | 05-22-2014 |
| 20140140218 | METHOD AND APPARATUS FOR COMPUTING LAYER 2 LOAD CONDITIONS IN A WIRELESS NETWORK ENVIRONMENT - A method and a system for measuring Layer 2 (L2) load conditions in a wireless network environment are provided. The method of an evolved Node B (eNB) for measuring L2 load conditions in a wireless network environment includes determining total number of Physical Resource Blocks (PRBs) allocated to the eNB in uplink and downlink and determining number of PRBs which are unavailable in uplink and downlink. The method further includes computing number of PRBs available for use during a time period by subtracting the number of unavailable PRBs from the number of allocated PRBs. Moreover, the method includes reporting the number of PRBs available for use during a time period to an Operation And Maintenance (OAM) entity in the wireless network environment. | 05-22-2014 |
| 20140146686 | TRANSMISSION SYSTEM, TRANSMISSION DEVICE, PACKET LOSS RATIO MEASUREMENT METHOD, AND PACKET LOSS RATIO MEASUREMENT PROGRAM - In a transmission system capable of measuring packet loss ratio between arbitrary devices upon a transmission path without increasing bandwidth of an OAM frame band, a plurality of transmission devices which have been disposed upon a transmission path are provided with a frame analysis unit which receives data frames so as to analyze the type of the data frames, a count processing unit which stores the number of received frames included in the data frames into storage module provided beforehand, an output line end portion which outputs the data frames, and an OAM processing unit which calculates the packet loss ratio in the transmission path using the number of received frames. The frame analysis unit has a function which, if the data frames are OAM frames, copies the data frames and the OAM processing unit has a function which calculates the packet loss ratio using the copied OAM frames. | 05-29-2014 |
| 20140153406 | Systems and Methods of Test Packet Handling - The present disclosure may include a method of handling test packets in an apparatus with a first unit communicatively coupled with a second unit. The method may comprise designating a test packet with type information, the type information indicating whether the test packet is handled by the first unit, the second unit, or either unit. The method additionally may include setting one or more bits of a register of the first unit to select whether the first unit will handle all of the test packets with type information designating either unit. The disclosure further includes associated systems and apparatuses. | 06-05-2014 |
| 20140169179 | METHODS AND DEVICES FOR MONITORING A DATA PATH - 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. | 06-19-2014 |
| 20140169180 | AUTOMATIC SETUP OF REFLECTOR INSTANCES - 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. | 06-19-2014 |
| 20140177452 | NETWORK ELEMENT FOR SWITCHING TIME DIVISION MULTIPLEX SIGNALS - A network node, which is designed for switching of time-division multiplex signals; contains a number of line cards (LCI-LCn), a switch fabric (SF) interconnecting the line cards (LCI-LCn), and a control system (CS). The switching fabric (SF) is a cell based switch with one or more switch modules (SET-SEn) adapted to switch cells of a predefined cell format on the basis of addresses contained in cell headers of the cells. The line cards (LCI-LCn) have segmentation and reassembly devices (SARI-SARn) for segmenting input time-division multiplex signals into cells of the preformed cell format and adding address information to each cell and for reassembling cells received from said switch fabric (SF) into output time-division multiplex signals. The control system (CS) is connected to a switched port of the switch fabric (SF) and exchanges with the line cards (LCI-LCn) control and/or Operation, Administration and Maintennance (OAM) messages over the switch fabric (SF) using cells of the preformed cell format. | 06-26-2014 |
| 20140192657 | Configuring Relay Cell Identities in Cellular Networks - The technology in this application identifies a relay cell serviced by a relay radio node in a radio access network (RAN) of a cellular communications system in which there is a radio connection between the relay radio node and a donor radio base station. The donor radio base station is identified by a RAN donor radio base station cell identifier. A RAN relay cell identifier is determined that uniquely identifies the relay cell within the RAN, the RAN relay cell identifier including a relay cell identifier and a donor base station identifier. The RAN relay cell identifier is then provided or used as needed so that the relay radio node can transmit the RAN relay cell identifier to uniquely identify the relay cell to one or more radio terminals in the RAN. | 07-10-2014 |
| 20140204765 | INTERFERENCE CONTROL METHOD AND DEVICE - The present invention relates to an interference control method and device. The interference control method includes: performing neighboring cell measurement, and selecting at least one neighboring cell whose signal transmission strength is larger than signal transmission strength of a serving cell from measured neighboring cells as an interfering cell; parsing a physical broadcast channel PBCH of the interfering cell to obtain the number of antenna ports of the interfering cell; obtaining a cell reference signaling CRS location of the interfering cell according to a physical cell identifier PCI and the number of antenna ports of the interfering cell; and performing interference control according to information of the CRS location. | 07-24-2014 |
| 20140211636 | LAYER-3 PERFORMANCE MONITORING SECTIONALIZATION - A method is disclosed for the collection of performance metrics by establishing service operations administration and maintenance (OAM) sessions between an actuator and a plurality of reflectors in a communication network. Test packets from an actuator simultaneously reach a plurality of reflectors along a test path. Each single test packet results into a plurality of test results, one per reflector, with quasi-synchronous performance metrics to sectionalize a network and more efficiently isolate fault or performance problems without the need for additional test packets to isolate the issue. Another method is disclosed wherein an actuator generates and transmits a plurality of simultaneous test packets, one per NID device, resulting into a plurality of test results, one per reflector, with quasi-synchronous performance metrics to sectionalize a network and more efficiently isolate fault or performance problems without the need for additional test packets to isolate the issue. | 07-31-2014 |
| 20140219106 | ALARM INDICATION AND SUPPRESSION (AIS) MECHANISM IN AN ETHERNET OAM NETWORK - 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. | 08-07-2014 |
| 20140254391 | ESTIMATION OF SMALL CELL DENSITY - The embodiments herein relate to communication networks and, more particularly, to small cells in wireless communication networks. The embodiments herein disclose a mechanism for determining an upper limit for the uplink transmission power for a small base station in the small cell, based on small cell density and co-channel interference. | 09-11-2014 |
| 20140293798 | MPLS-TP NETWORK AND LINK TRACE METHOD THEREOF - A MPLS-TP network includes a first router, at least one second router, and a third router. The first router is set to a MEP and generates and transmits a link trace packet. The second router is set to an MIP, generates a response packet in response to reception of the link trace packet, transmits the response packet in a direction of the first router, and forwards the link trace packet. The third router is set to the MEP, generates a response packet in response to reception of the forwarded link trace packet, and transmits the response packet in the first router direction. | 10-02-2014 |
| 20140307561 | SYNTHETIC LOSS MEASUREMENTS USING SESSION NUMBERS - A method and system for performing synthetic loss measurements (SLM) includes methods for single-ended and dual-ended synthetic loss measurements. The methods include maintaining a session number indicative of a physical network component at each maintenance point used to perform synthetic loss measurements. The session numbers are maintained according to a novel protocol and are used to detect a change in the network component, such as resulting from a protection switch event. The session numbers enable the synthetic loss measurements to continue irrespective of changes in the values for the session numbers and to remove errors when computing frame loss that may arise when physical network components change. The disclosed methods and systems may be used when a link aggregation group exists between a local maintenance point and a remote maintenance point. | 10-16-2014 |
| 20140307562 | PACKET LOSS COUNTER - A method for communication includes generating in a transmitter a sequence of data packets for transmission to a receiver. Control packets are inserted into the sequence in the transmitter, such that a given control packet is indicative of a count of the data packets that are transmitted in a time interval that ends with a previous control packet that precedes the given control packet. The sequence, including the data packets and the inserted control packets, is transmitted to the receiver. | 10-16-2014 |
| 20140341044 | DIAGNOSTIC SYSTEM - A transmission source node transmits diagnostic frames where a TTL value is set to the number of hops that is counted until an intermediate node. A relay node decrements the TTL value of the received diagnostic frames, counts the number of diagnostic frames where the decremented TTL value is 0, and recognizes continuity between the transmission source node and the relay node based on the number of transmitted diagnostic frames transmitted from the transmission source node and the number of diagnostic frames where the decremented TTL value is 0. | 11-20-2014 |
| 20140341045 | METHODS AND APPARATUS FOR STANDARD PROTOCOL VALIDATION MECHANISMS DEPLOYED OVER A SWITCH FABRIC SYSTEM - An apparatus includes a destination edge device configured to receive a first validation packet according to a switch fabric validation protocol. The destination edge device is configured to validate multiple data paths through a distributed switch fabric from a source edge device to the destination edge device based on the first validation packet. The destination edge device is configured to send, in response to receiving the first validation packet, a second validation packet to a peripheral processing device. The destination edge device is also configured to send the second validation packet according to a validation protocol different from the first validation protocol. | 11-20-2014 |
| 20140348003 | Policy-Enabled Dynamic Deep Packet Inspection for Telecommunications Networks - Provided herein is a method including the steps of: establishing at least one policy in a centralized policy management framework (PMF), wherein the policy includes at least one policy condition; monitoring data traffic; determining if the data traffic at least substantially meets one of the policy conditions; sending a trigger to the PMF, if at least one of the policy conditions is at least substantially met; generating an enforcement decision at the PMF, wherein the enforcement decision includes at least one enforcement action; sending the enforcement decision to an enforcement function; and enforcing the enforcement decision. A system for realizing this method is also provided. | 11-27-2014 |
| 20150023179 | TRIANGLE LOOPBACK - A method of characterizing a communications channel between two communications nodes, the method comprising: determining at least one feature of a communications path between a first communications node and a second communications node; determining at least one feature of a communications path between the first communications node and a third communications node; transmitting at least one packet from the first node to propagate through the second and third nodes and return to the first node; and determining at least one feature of the communications channel between the second and third nodes responsive to receiving the packet at the first node, the at least one determined feature of the first node and the second node, and/or information comprised in the packet. | 01-22-2015 |
| 20150023180 | METHOD AND APPARATUS FOR OBTAINING TERMINAL MINIMIZATION OF DRIVE-TESTS DATA - The present invention discloses a method and an apparatus for obtaining terminal minimization of drive-tests data, relates to the field of communication technologies, and solves a problem that when determining, according to minimization of drive-tests (MDT) data, that a current operating status of a network is abnormal, an operation, maintenance and administration (OAM) cannot accurately determine whether the abnormality of the network is caused by a terminal or the network itself since the MDT data received by the OAM does not include an identity of the terminal. The method includes: obtaining MDT data measured by a terminal and an identity of the terminal; and reporting the MDT data measured by the terminal and the identity of the terminal to an OAM. Embodiments of the present invention are mainly applied to a process of obtaining terminal minimization of drive-tests data. | 01-22-2015 |
| 20150036509 | VERIFICATION OF AUTHORIZED SHARED ACCESS OPERATION - A method of wireless communication includes receiving measurement reports from multiple first wireless devices operating in a specific area and operating on a spectrum that is different from an ASA spectrum. The method also includes adjusting a configuration for one or more second wireless devices operating on the ASA spectrum based on the measurement reports and/or configuration adjustment information. | 02-05-2015 |
| 20150036510 | METHOD AND DEVICE FOR MEASURING ETHERNET PERFORMANCE - A method and device for measuring Ethernet performance, in which, a first OAM protocol frame transmitted by a local end network device to a peer end network device carries a measurement object indicator, so that the peer end network device can obtain peer end measurement statistical information corresponding to the measurement object indicator according to a corresponding relationship between the measurement object indicator and the peer end measurement statistical information. Since different measurement object indicators may correspond to different peer end measurement statistical information, the flow-based measurement can be achieved and, thus, the problem that measurements in the P2MP topology network cannot be implemented in the prior art is solved, thereby improving the capability of measuring network performance. | 02-05-2015 |
| 20150078174 | AUTOMATIC SETUP OF REFLECTOR INSTANCES - 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. | 03-19-2015 |
| 20150092564 | Validation of Chained Network Services - A method implemented in a network element, the method comprising identifying a first service function (SF) for validation, the first SF being associated with a service function chain (SFC), being applied to a data flow, and operating on a first network node, encoding one or more tests associated with the first SF in an operations, administration, and management (OAM) packet, and transmitting a validation request comprising the OAM packet towards the first SF to request validation of the first SF by execution of the tests. | 04-02-2015 |
| 20150092565 | FAULT DIAGNOSIS METHOD AND APPARATUS - Embodiments of the present invention provide a fault diagnosis method and apparatus. A service in the fault diagnosis method relates to at least one user, and the fault diagnosis method includes: determining whether a terminal of each user allows performing fault diagnosis for the service; and performing fault diagnosis for the service if the terminal of each user allows performing fault diagnosis for the service. In the embodiments of the present invention, fault diagnosis for the user related service cannot be performed unless allowed by a user terminal or allowed by both the user terminal and a system side. Thereby, it is ensured that fault diagnosis is performed in a secure environment, which better complies with security laws and regulations. | 04-02-2015 |
| 20150098338 | ENERGY EFFICIENT AND ENERGY-MANAGED TRAFFIC ENGINEERING SERVICES IN MULTIPROTOCOL LABEL SWITCHING AND GENERALIZED MULTIPROTOCOL LABEL SWITCHING NETWORKS - Provided are methods and apparatus for mitigating traffic loss by using advanced traffic engineering services in a multiprotocol label switching (MPLS) network and/or a generalized multiprotocol label switching (GMPLS) network. Provided is an exemplary method that includes measuring, at a network element, energy utilization of at least one of a line card and a switch fabric card that are configured to carry a traffic engineering (TE) capable link, as well as converting the energy utilization measurement to a normalized energy consumption indicator for the at least one of the line card and the switch fabric card. Further, based on the normalized energy consumption indicator, a route of a label switched path in the MPLS network is optimized so the route avoids the at least one of the line card and the switch fabric card. The provided methods and apparatus advantageously improve throughput, reliability, and availability of MPLS and GMPLS services. | 04-09-2015 |
| 20150098339 | Controller Driven OAM For Openflow - A method is performed by a network element implementing an OpenFlow controller. The method requests that a subset of OpenFlow switches in the network report metrics for an OpenFlow data flow to provide a management module with information for executing a management function. A second method is performed by a network element implementing an OpenFlow switch. The OpenFlow switch reports metrics for an OpenFlow data flow to the OpenFlow controller, wherein the OpenFlow switch forwards a management packet with the OpenFlow data flow and collects the metrics for the OpenFlow data flow. | 04-09-2015 |
| 20150103673 | FRAME TRANSMISSION APPARATUS AND METHOD FOR CHECKING NORMALITY - A frame transmission apparatus includes multiple ports provided in a line unit, and a setting control unit. The setting control unit checks the normality of the frame transfer state within the apparatus by transferring a maintenance management frame from a first port to a second port within the apparatus. When the first port is a logical port configured by link aggregation of multiple physical ports, the setting control unit selects each of the multiple physical ports as a transmission source port and transfers multiple maintenance management frames from the multiple physical ports to the second port. | 04-16-2015 |
| 20150109938 | METHOD, NODE, AND SYSTEM FOR DETECTING PERFORMANCE OF LAYER 3 VIRTUAL PRIVATE NETWORK - Embodiments of the present invention disclose a method, apparatus, and system for detecting performance of a layer 3 virtual private network. A first node creates an OAM instance according to OAM configuration information set by a user, and sends the OAM configuration information to a second nodet; the second node creates an OAM instance according to the OAM configuration information; and the first node performs OAM detection by sending an OAM packet to the second node and/or receiving an OAM packet from the second node, where the sending and/or receiving is implemented by using the OAM instance of the first node. According to the present invention, not only an OAM configuration procedure is simplified and manpower is saved, but also consistency of OAM configuration at two ends can be ensured. In addition, a configuration delay in this dynamic configuration manner may be ignored. | 04-23-2015 |
| 20150124626 | METHOD OF SUPPORTING IN-BAND OPERATIONS, ADMINISTRATION AND MAINTENANCE (OAM) FOR POINT-TO-MULTIPOINT (P2MP) DATA TRANSFER IN MULTI-PROTOCOL LABEL SWITCHING-TRANSPORT PROFILE (MPLS-TP) NETWORK - A method of supporting in-band Operations, Administration and Maintenance (OAM) in a Multi-Protocol Label Switching-Transport Profile (MPLS-TP) network is provided. The method may include generating a merged OAM packet by merging a plurality of OAM packets received from a plurality of leaf nodes, and transmitting the merged OAM packet to a root node through a Label-Switched Path (LSP). | 05-07-2015 |
| 20150146542 | METHOD FOR CONFIGURING REFERENCE SIGNAL, BASE STATION AND USER EQUIPMENT - The embodiments of the present invention provide a method for configuring a reference signal, a base station and a user equipment. The method includes: receiving, by a first base station, candidate reference signal configuration information of a second base station transmitted by the second base station, and/or candidate reference signal configuration information of the first base station transmitted by an operation and maintenance entity (OAM); and configuring, by the first base station, a reference signal for a user equipment (UE) according to the candidate reference signal configuration information of the second base station, and/or, configuring, by the first base station, a reference signal for a UE according to the candidate reference signal configuration information of the first base station. | 05-28-2015 |
| 20150296386 | SYSTEM AND METHOD FOR SPECTRUM SHARING - A method for spectrum coexistence includes determining interference from a primary network to a secondary network that is independent from the primary network, determining transmission parameters for a network element of the secondary network that mitigate interference from the secondary network to the primary network, and transmitting signals from the network element according to the determined transmission parameters. The network element could be a base station or user equipment. Accordingly, a secondary network can coexist with a primary network even when the networks do not communicate with each other. | 10-15-2015 |
| 20150312783 | MOBILE COMMUNICATION BASE STATION AND METHOD FOR SELECTING A VIRTUAL CARRIER FOR MACHINE-TYPE COMMUNICATIONS BASED ON MEASUREMENTS OF CHANNEL CONDITIONS - Apparatus and method providing feedback on channel conditions in a wireless telecommunications system including a base station arranged to communicate with plural terminals device using frequencies spanning a system frequency bandwidth. At least one terminal device is a reduced capability terminal device including a tuneable transceiver configured to receive downlink transmissions from the base station using only a restricted frequency bandwidth which is smaller than and within the system frequency bandwidth. The reduced capability terminal device is configured to communicate information derived from measurements of channel conditions to the base station. The information may include an indication of measured channel conditions for the different frequency locations, or an indication of one or more frequency locations for which the corresponding measurement of channel conditions meet a pre-defined selection criterion. The base station subsequently schedules downlink transmissions for the terminal device in taking account of the information received from the terminal device. | 10-29-2015 |
| 20150319057 | CONTROLLER DRIVEN OAM FOR SPLIT ARCHITECTURE NETWORK - A method is performed by a network element implementing a controller of a split architecture network. The method requests that a subset of switches in the network report metrics for a data flow to provide a management module with information for executing a management function. A second method is performed by a network element implementing a switch. The switch reports metrics for a data flow to the controller, wherein the switch forwards a management packet with the data flow and collects the metrics for the data flow. | 11-05-2015 |
| 20150319064 | PACKET COMMUNICATION METHOD AND DEVICE - An object of the present invention is to measure a packet loss rate by using information included in a general communication protocol. In a network including a transmission terminal, a communication line, and a reception terminal, the transmission terminal adds a number denoting a packet order to a transmission packet and transmits the transmission packet, and the reception terminal is a system using a protocol in which an order of packets, which have been received, is returned as an acknowledgement, and a system using a selective acknowledgement to notify of reception of discontinuous data when the reception terminal receives the discontinuous data. A method for measuring a packet loss rate by using a number of transmission packets and information on an acknowledgement and a selective acknowledgement is provided in the transmission terminal. | 11-05-2015 |
| 20150319635 | Method and Poll Control Entity for Controlling a Polling Procedure - A method and poll control entity ( | 11-05-2015 |
| 20150341250 | METHOD, DEVICE AND SYSTEM FOR PROCESSING OAM PACKET - 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. | 11-26-2015 |
| 20150351105 | APPARATUS AND METHOD FOR MITIGATING INTERFERENCE IN WIRELESS COMMUNICATION SYSTEM - The present disclosure relates to a pre-5th-Generation (5G) or 5G communication system for supporting higher data rates Beyond 4th-Generation (4G) communication system such as Long Term Evolution (LTE). An apparatus of a Base Station (BS) in a wireless communication system is provided. The apparatus includes a wireless communication unit that is configured to receive an interference signal which cannot be controlled during a first period, and all interference signals during a second period with respect to a plurality of channels and a controller configured to determine a size of an interference signal which can be controlled, using a difference between a measurement of all the interference signals during the second period and a measurement of the interference signal which cannot be controlled, and select one of the plurality of channels according to the determined size of the interference signal which can be controlled. | 12-03-2015 |
| 20150358255 | Relay Device - One external ports of the line cards are set as member ports of the same LAG. When monitoring a continuity between the member ports of the LAG and an outside of the device, a management card generates a first monitoring frame and transmits it to any line card corresponding to the LAG. The line card transmits the first monitoring frame to the outside of the device from the external port. When the line cards corresponding to the LAG receive a second monitoring frame from the outside of the device by the LAG, the line cards transmit the second monitoring frames to the management card. | 12-10-2015 |
| 20150381324 | CONTROL FOR BFD RETURN PATH - A method is implemented by a network device to establish a bidirectional forwarding detection (BFD) session with a defined return path to enable detection of data plane failures between an active node and a passive node in a network where a forward path and a reverse path between the active node and the passive node are not co-routed. The method includes receiving a label switched path (LSP) ping including a BFD discriminator type length value (TLV) of the active node and a return path TLV describing a return path to the active node. The BFD discriminator of the active node and a BFD discriminator of the passive node are associated with the BFD session. The return path is associated with the BFD session between the active node and the passive node, and BFD control packets are sent to the active node using the return path to detect a failure on the return path. | 12-31-2015 |
| 20150381444 | PATH VALIDATION IN SEGMENT ROUTING NETWORKS - In one embodiment, a method includes generating a path validation packet at a network device, the path validation packet including a plurality of segment identifiers for use in segment routing and an operations, administration, and management (OAM) segment identifier for use in path validation, transmitting from the network device the path validation packet on a path having a plurality of routers associated with the segment identifiers, one of the routers associated with the OAM segment identifier, and validating the path if a return path validation packet is received. An apparatus is also disclosed herein. | 12-31-2015 |
| 20150381460 | NETWORK MONITORING SYSTEM AND METHOD - A network monitoring system includes first to third information processing apparatuses. The first information processing apparatus provides a first virtual machine monitoring a monitoring target apparatus with resource for processing predetermined load received from the monitoring target apparatus. The second information processing apparatus provides a second virtual machine monitoring the monitoring target apparatus with resource less than the resource for processing the predetermined load. When an abnormality occurs in the monitoring of the monitoring target apparatus by the first virtual machine, the second information processing apparatus migrates the second virtual machine to a third information processing apparatus capable of providing the second virtual machine with resource for processing the predetermined load. | 12-31-2015 |
| 20150381466 | Micro-OAM for Link Groups - 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. | 12-31-2015 |
| 20160006639 | AUTOMATIC SETUP OF REFLECTOR INSTANCES - 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. | 01-07-2016 |
| 20160080193 | MAINTENANCE ENTITY GROUP END POINT OF A SUBNETWORK WITHIN A MULTI-DOMAIN NETWORK - A Maintenance Entity Group, MEG, End Point, MEP, of a subnetwork within a multi-domain network, said MEP comprising an encapsulation unit configured to encapsulate SOAM frames received by a passive Service Access Point, SAP, of the MEP and a decapsulation unit configured to decapsulate encapsulated SOAM frames received by an active Service Access Point, SAP, of the MEP. | 03-17-2016 |
| 20160080950 | METHOD FOR MINIMIZATION OF DRIVE TESTS, METHOD FOR COLLECTING TERMINAL INFORMATION, TERMINAL, AND NETWORK ELEMENT - A method for minimization of drive tests, a method for collecting terminal information, a terminal, and a network element, belong to the field of communication technologies. The method includes: in a process of activating a minimization of drive tests MDT task, checking, by a network element, a consent type of a user corresponding to a selected terminal; sending an MDT task activation command to the selected terminal according to a check result of the consent type; after receiving measured data reported by the selected terminal, performing an operation according to a check result of the consent type. In embodiments of the present invention, check on user consent is implemented in a network detection process, thereby avoiding a case that a user equipment is forced to report personal information without permission of the user and improving the user experience. | 03-17-2016 |
| 20160100326 | CORRELATION IDENTIFIER FOR USER PLANE CONGESTION AND OTHER USE CASES - Various communication systems may benefit from an identifier that can correlate a user equipment or a packet data network connection with a particular cell. For example, a correlation identifier may be useful to address management of user plane congestion and other use cases. A method can include generating a correlation identifier for a user equipment and/or a packet data network connection. The method also includes the ability to identify the user context information with the same correlation ID in the core network and in the radio access network. The method can also include sending the correlation identifier to a network element. | 04-07-2016 |
| 20160105348 | MEP CONFIGURATION METHOD AND NETWORK DEVICE - In the communications field, an MEP configuration method and an Ethernet device are provided. The method includes: receiving, by an Ethernet device, a CCM message and parsing the CCM message to acquire configuration information in the CCM message and a virtual local area network VLAN of the CCM message; and determining, by the Ethernet device according to configuration information, whether the CCM message is MEP configuration that needs to be configured, and if it is determined that the CCM message is the MEP configuration that needs to be configured, complete the MEP configuration according to the configuration information and the VLAN of the CCM message. A method provided in a specific implementation manner of the present invention has an advantage of configuring MEP configuration automatically. | 04-14-2016 |
| 20160134499 | METHOD OF MONITORING A TANDEM CONNECTION IN A MULTI-PROTOCOL LABEL SWITCHING (MPLS) TELECOMMUNCIATION NETWORK - It is disclosed a method of monitoring, a Multi-Protocol Label Switching network, a tandem connection of a Label Switched Path. The tandem connection to be monitored has an input node and an output node. The method comprises the following steps: receiving a first Operation Administration Management packet at the input node; and generating a second OAM packet at the input node. According to the invention, the following steps are further performed: a tandem connection header is inserted into the first OAM packet; both the first OAM packet with the tandem connection header and the second OAM packet are sent towards the output node; and the second OAM packet is identified according to the presence or absence of said tandem connection header. | 05-12-2016 |
| 20160142278 | PATH-PING AND ECMP-TRACEROUTE FOR IPV6 OVERLAY VIRTUALIZED NETWORKS - In one embodiment, an ingress network virtualization edge (NVE) in a computer network generates an echo packet, and sets an indication in the echo packet that the echo packet is for overlay path validation. In addition, the ingress NVE sets a message type of the echo packet to a generic echo request, and includes virtualization network (VN) context information within the echo packet. Once setting a destination address of the echo packet as an egress NVE address and including an indication to the egress NVE that the echo packet is an operations, administration, and management (OAM) message, the ingress NVE may then send the echo packet toward the egress NVE (e.g., to validate the VN context information and/or to reveal multipath traces). | 05-19-2016 |
| 20160156500 | METHOD OF PROVIDING PERFORMANCE MANAGEMENT DATA, CORRESPONDING NETWORK ELEMENT AND CORRESPONDING RADIO COMMUNICATION SYSTEM | 06-02-2016 |
| 20160156540 | SYSTEMS AND METHODS FOR DYNAMIC OPERATIONS, ADMINISTRATION, AND MANAGEMENT | 06-02-2016 |
| 20160173350 | ETHERNET FAULT MANAGEMENT SYSTEMS AND METHODS | 06-16-2016 |
| 20160182340 | SERVICE OAM VIRTUALIZATION | 06-23-2016 |
| 20160182344 | SYSTEMS AND METHODS TO DETECT, DIAGNOSE, AND MITIGATE ISSUES IN MULTI-LAYER NETWORKS | 06-23-2016 |
| 20160182348 | LAYER-3 PERFORMANCE MONITORING SECTIONALIZATION | 06-23-2016 |
| 20160197810 | SYNTHETIC LOSS MEASUREMENTS USING SESSION NUMBERS | 07-07-2016 |
| 20160198522 | Collecting and Analyzing Data in a Distributed Sensor Network | 07-07-2016 |
