Abstract: Serial clustering uses two or more network devices connected in series via a local and/or wide-area network to provide additional capacity when network traffic exceeds the processing capabilities of a single network device. When a first network device reaches its capacity limit, any excess network traffic beyond that limit is passed through the first network device unchanged. A network device connected in series with the first network device intercepts and will process the excess network traffic provided that it has sufficient processing capacity. Additional network devices can process remaining network traffic in a similar manner until all of the excess network traffic has been processed or until there are no more additional network devices. Network devices may use rules to determine how to handle network traffic. Rules may be based on the attributes of received network packets, attributes of the network device, or attributes of the network.

Abstract: Methods and apparatus for dynamically configuring a parent circuit through a subscriber record on an authentication, authorization, and accounting (AAA) server responsive to an authorization event for the subscriber session on the network element. According to one embodiment of the invention, the AAA server accesses the subscriber record for a subscriber session on the network element. Based on this subscriber record, a set of one or more attributes for a subscriber circuit and a set of one or more attributes for a parent circuit of the subscriber circuit are determined. The network element applies the set of subscriber circuit attributes to the subscriber circuit and the set of parent circuit attributes to the parent circuit.

Abstract: Systems and methods for implementing explicit congestion notification (ECN) across disparate networks, configurations, and protocols are disclosed. Local rate adaptation using ECN may be provided without relying on other operators to upgrade or ensure their networks are ECN transparent or ECN capable.

Abstract: A method of transmitting data over a communication network using negative acknowledgment is presented. In the method, a stream of data packets is transmitted from a first node of the network to a second node of the network. All but at least two of the stream of data packets is successfully received at the second node, wherein the data packets that are not successfully received are not located sequentially within the stream of data packets. A status packet is transmitted from the second node to the first node, wherein the status packet includes an indication of each of the data packets that were not successfully received. In response to receiving the status packet at the first node, the data packets that were not successfully received at the second node are retransmitted from the first node to the second node in response to receiving the status packet.

Abstract: A network management node of a connection-oriented network listens to topology advertisements in a control plane of the network and stores information carried in the topology advertisements. The node selectively sends Link Management Protocol (LMP) requests based on the information carried in the topology advertisements. The LMP requests can be performed for at least one of the following events: adjacency addition; addition of a link between nodes; deletion of a link between nodes; modification to the bandwidth of a link between nodes. The information collected in the topology advertisements is translated into a format compatible with an Operations Support System (OSS) model.

Abstract: After statically provisioned paths are created through an Ethernet network, trunks may be created to extend along those paths. The trunks extend between pairs of NNI interfaces on either end of the path, and Ethernet OAM may be run over the trunks to detect connectivity along the paths. Service instances and service groups may be provisioned over particular paths through the network. Each service instance/service group is associated with a trunk and the Ethernet OAM service on the trunk may be used to provide Ethernet connectivity OAM for the service instance/service group. Upon detection of a failure on the trunk, the service instances/service groups associated with the trunk may be caused to failover to an alternate path through the network. Thus, a single Ethernet OAM service instance may be used to provide connectivity verification so that connectivity detection does not need to be performed on each individual service instances/service group.

Abstract: Techniques for efficiently updating routing information in a network device such as a router. According to an embodiment of the present invention, the routing information is updated upon creation or deletion of an overlay tunnel without the network device having to regenerate a Shortest Path Tree (SPT) by performing full Shortest Path First (SPF) processing.

Abstract: Embodiments are directed to systems and methods for network monitoring and testing using dimension-value based KPIs that are configured and calculated from a stream of homogenous or heterogeneous data events. The embodiments describe flexible and abstract ways of specifying configurations for the calculation of the KPIs from the stream of network events. Embodiments are described in the context of calculating KPIs for call detail records (CDRs) for computer telephony events.

Abstract: Systems and methods described herein are directed to solutions for NoC interconnects that provide end-to-end uniform- and weighted-fair allocation of resource bandwidths among various contenders. The example implementations are fully distributed and involve computing weights for various channels in a network on chip (NoC) based on the bandwidth requirements of flows at the channels. Example implementations may involve using the weights to perform weighted arbitration between channels in the NoC to provide quality of service (QoS). The weights may be adjusted dynamically by monitoring the activity of flows at the channels. The newly adjusted weights can be used to perform the weighted arbitrations to avoid unfair bandwidth allocations.

Abstract: The present disclosure provides systems and methods for noise tolerant signal processing in a pilot assisted data receiver, including: given received pilots with common pilot components and individual pilot components, computing coefficients associated with the individual pilot components of the received pilots; and applying the computed coefficients to the received pilots to obtain conditioned pilots. The individual pilot components result from relatively slow changes of the received pilots relative to the common pilot components. The common pilot components result from relatively fast changes of the received pilots relative to the individual pilot components.

Abstract: A computer-implemented method may include identifying a controller-based network. The controller-based network may include a controller that enables centralized management of a flow of packets among devices by providing a centralized control plane for the controller-based network. The method may further include receiving a test scenario that includes at least one trigger capable of causing a fault in the controller-based network. The method may also include receiving an automation template having at least one test parameter for utilizing the centralized control plane to execute the test scenario in the controller-based network. The method may additionally include using the centralized control plane to automatically execute the test scenario on the controller-based network in accordance with the test parameter. Various other apparatuses, systems, methods, and computer-readable media are also disclosed.

Abstract: Techniques for quick advertisement of a failure of a cellular router in a network are described herein. In one example, problems with the cellular router in the network are recognized, such as by the cellular router itself, or by a node in communication with the cellular router. In response, one or more cellular router failure notification packets are sent by the cellular router prior to failure to one or more nodes within a cell served by the failing cellular router. The cellular router failure notification packets indicate that the cellular router is failing, thereby starting a discovery process in each node, wherein an attempt is made to discover a new cellular router.

Abstract: Balancing load distributions of loopback ports includes determining that a load distribution among loopback ports of a switch is unbalanced, determining whether the load distribution is balanceable, and balancing the load distribution.

Abstract: Systems and methods provide remote performance monitoring and testing to a cell site in a cellular communications network. The systems and methods include a network management center having remote monitoring and testing capabilities utilizing an intelligent customer service unit that traps and makes available alarm information on the transport link.

Abstract: Systems and methods to configure and schedule asymmetric carriers on an uplink between communication devices are described herein. An access node is provided to reserve a common-channel-free carrier for communication with an access terminal. The access node may reserve the carrier for communication with the access terminal based on path loss data between the access node and the access terminal. Further, an adaptive rise-over-thermal (RoT) target may be employed for communication over any carrier.

Abstract: Methods and apparatuses for multicasting within a wireless communications system are disclosed. In one embodiment a method of multicasting within a wireless communications system operating in accordance with a given wireless communication protocol includes monitoring multicast messages associated with a given multicast session in a first sector. A handoff occurs from the first sector to a second sector. It is determined whether the second sector is transmitting multicast messages associated with the given multicast session. Then, based on the determination, a registration request for the given multicast session within the second sector is transmitted on a reverse link access channel in an earlier slot than a next designated slot for registration requests as defined by the wireless communication protocol.

Abstract: A method of selectively employing acknowledgment in a communication system is presented herein. In one implementation of the method, at least one indication of a communication quality of a link coupling a first communication node and a second communication node is processed. After processing the indication, a message from the first communication node is transmitted over the link to the second communication node. The message includes an acknowledgment request if the processing of the indication signifies that the communication quality of the link is below a predetermined level. Oppositely, the message does not include an acknowledgment request if the processing of the indication signifies that the communication quality of the link at least attains the predetermined level.

Abstract: A system for correlating communication packets across different communication networks includes a first monitoring agent in a first network for collecting local identifying information of a communication packet at a communication node. The first monitoring agent pairs the local identifying information with a public identifying information of the packet for a second network. The first monitoring agent further adds a timestamp to the collected information. A second monitoring agent in the second network receives a communication packet from the communication node and collects public identifying information of the packet. The second monitoring agent adds a time-stamp to the collected information. A third monitoring agent in the second network receives the information collected by the first and the second monitoring agents and correlates packets based on the received information.

Abstract: A communication apparatus including: a processing unit configured to transition between a first state and a second state and configured to perform a response process on a packet received via the network, wherein the processing unit includes: a determination unit configured to perform a first determination process; a verification unit configured to perform a first verification process for verifying the validity of the first packet, if it is determined as a first case; and a first responding unit configured to perform the response process on the first packet, if the first packet is verified as valid, wherein if it is determined as a second case that the first packet is not the packet of which the response process is to be performed by the processing unit, the verification unit dose not perform the first verification process and the first responding unit does not perform the response process.

Abstract: The present invention relates to a PDCCH transmission method for a base station on a mobile communications system supporting bandwidth aggregation, and more particularly the invention relates to a PDCCH transmission method comprising the step of generating downlink control data comprising resource-allocation configuration data for any desired sub-band and a sub-band other than the desired sub-band, and the step of transmitting the generated downlink control data to a mobile station through the PDCCH of the desired sub-band, and the invention also relates to a system therefor comprising a mobile station.

Abstract: The present invention relates to Method for controlling medium access in a mesh network comprising the following steps: a station of the network receiving a Network Allocation Vector (NAV) setting frame indicating a period of time during which the station cannot access the medium,—the station setting a Network Allocation Vector expiration timer based on the received setting frame, the station detecting a least one reservation made by two other stations in the network, and setting a respective Reservation Allocation Vector (RAV) expiration timer based on the duration of the detected reservation, and storing the identity of the two stations as owners of the reservation, the station updating the NAV expiration timer as the latest of the NAV expiration time of the NAV setting frame and all set respective RAV expiration timers.

Abstract: A method, computer program and apparatus operate when resuming data transmission/reception upon activation of a serving cell, or after a long in-device coexistence interference avoidance gap, to determine whether to report to a network access node an in-device coexistence interference indicator value and send the in-device coexistence interference indicator value to the network access node, The in-device coexistence interference indicator value is reported to the network access node for a certain period if any periodic channel quality indication resource is configured for the cell, or if an aperiodic channel quality indication for the cell is requested from the network access node.

Abstract: Described are computer-based methods and apparatuses, including computer program products, for sharing control of a voice over internet protocol (VoIP) call. In some examples, the method includes establishing a direct connection between a VoIP endpoint device and a computing device associated with the VoIP endpoint device. The method further includes communicating, via the direct connection, VoIP control signaling between the VoIP endpoint device and the computing device. The method further includes modifying a VoIP call based on the VoIP control signaling.

Abstract: Geographical coordinates for a cell are obtained based upon the location of the cell, generating a physical layer cell identity matrix for the cell based upon a subset of physical layer cell values allocated for the location of the cell which is performed to eliminate interference among primary and secondary synchronization signaling for the cell based upon a subset of physical layer cell values allocated for the location of the cell, using one of the cell identities contained in the generated matrix for the new cell which is mapped to the location of the new cell and monitoring for physical layer cell color code collisions among neighboring cells reported by one or more user equipment in range of the new cell and neighboring cells, and if a collision occurs re-generate a physical layer cell matrix using unallocated physical layer cell values for the location of the new cell.

Abstract: Stabilization of a wireless information collection system for dispenser usage compliance in a facility is provided. This system and method enable network stabilization by providing a network “heartbeat.” The network stabilization operates independently from information collection. Therefore, the system and method are able to improve the reliability of wireless information collection systems where the frequency of data collection is not steady.

Abstract: A computer-based method for processing user data traffic in a RAN in which mobile user equipment can communicate with a RNC through a base station includes the following steps. A flow of data frames to/from mobile user equipment passing between the base station and the RNC are read, wherein one or more of the data frames contain control messages and one or more other of the data frames contain user data. The control messages contained in the data frames are analyzed for channel identification information that indicates whether the data frames that contain user data contain circuit-switched or packet-switched user data. The data frames that contain the circuit-switched user data and the data frames that contain the packet-switched user data are segregated at a transport network layer between the base station and the RNC based on the channel identification information.

Abstract: User equipment performs radio communication with a base station over a communication channel formed by aggregating a plurality of component carriers. The user equipment measures a channel quality of the communication channel, and creates a measurement report using a result of the measurement and sends the measurement report to the base station. Each data signal is classified into two or more classes depending on a QoS requirement. The user equipment further receives control information related to a mapping between the plurality of component carriers and the class of each data signal from the base station, and controls at least one of the measurement and the sending of the measurement report, according to a procedure which varies depending on the control information. A base station allocates data to component carriers based on channel quality criteria for different data classifications.

Abstract: A method and apparatus for a secondary wireless transmit/receive unit (WTRU) to use of secondary cellular spectrum are provided. The secondary WTRU monitors transmissions of a primary WTRU; determines whether to provide assistance to the primary WTRU; and in response to a determination to provide assistance, performs cooperative communications with the primary WTRU for its transmission of data to a base station. If the assistance results in the data being transmitted to the base station faster than it would have with out assistance, the secondary WTRU may utilize uplink resources originally intended for the primary WTRU.

Abstract: Levels of power reduction for signals to be transmitted from a mobile communications device via radio channels in a digital wireless communications system, where each signal is modulated according to one of a number of modulation configurations, are determined. For each modulation configuration a first estimate of a power reduction is calculated (101), and the calculated first estimates are storied (102) in the device. The method comprises the steps of determining (103) a limited set of modulation configurations, said limited set comprising modulation configurations that have been determined likely to be used in practice; calculating (104) for each modulation configuration of the limited set an optimized estimate of a power reduction; and storing (105) the calculated optimized estimates in the device. In this way the power consumption of the device is reduced while keeping a look-up table at a reasonable size.

Abstract: In one embodiment, an access node of a network may receive a message that is destined for a particular address. The access node can determine that it does not have a border gateway protocol (BGP) label switched path (LSP) mapped for the particular address. The access node can further trigger an aggregation node to update outbound route filtering (ORF) to permit advertisements for the particular address. In response to the updated ORF of the aggregation node, the access node can receive via advertisements a BGP forwarding equivalent class (FEC) for an LSP mapped to the particular address. The access node can further transmit messages destined for the particular address from the access node to a subsequent node of the LSP according to the BGP FEC for the LSP.

Abstract: A method of wireless communication includes receiving a wireless signal at a linear receiver, and iteratively computing an inverted covariance matrix in frequency domain, one channel code at a time. The method also includes computing receiver demodulation coefficients based on the inverted covariance matrix and the frequency domain channel estimate or time domain channel estimate. The method further includes deriving a transmitter symbol based on a received signal vector and the coefficients.

Abstract: Methods and structure for reduced layout congestion in a switching device integrated circuit. A switching device such as a Serial Attached SCSI (SAS) expander comprises a switching circuit to couple any of a plurality (“N”) of physical links of the switching device with any other physical link of the switching device. The switching circuit comprises a first stage circuit adapted to couple any of the N physical links with a selected one of N/2 communication paths of the switching circuit and comprises a second stage circuit adapted to couple any of the N/2 communication paths with any of the N physical links. Since only N/2 communication paths may be active at any time in such a switching device, a control unit of the switching device tracks which of the N/2 communication paths are presently in use or unused so that an unused path may be selected for a new connection.

Abstract: Some implementations include routing and/or delivering communications within a network system. In one example, a packet source may be configured to recursively encode a data delivery tree so that any sub-tree formed from the data delivery tree compresses a continuous data block of the data delivery tree.

Abstract: A network switch includes a service registration database and a service discovery engine that is coupled to the service registration database. The service discovery engine receives a first service registration over a network from a first service included on a first service device and, in response, stores the first service registration in the service registration database. The service discovery engine then receives a multicast service discovery message over the network from a target device. The service discovery message includes a service identification. The service discovery engine then determines that the service identification is associated with the first service registration stored in the service registration database and, in response, sends a unicast service communication message over the network to the target device. The service communication message includes communication information for the first service.

Abstract: A system and method for detecting cooperation or conflict between actors in a network made up of self-organizing sub-networks examines parameters such as performance indicators and configuration parameters to determine whether or not different actors are adjusting configuration parameters in a way that is cooperative or conflicting. When a performance indicator is observed to be outside of its expected range, an acceptable convergence range can be defined to give the actors time to adjust and return the performance indicator to its expected range of values. When a performance indicator is detected to be non-convergent, the monitor can alert an operator, or another node, so that appropriate actions can be taken.

Abstract: Mobile broadband traffic has been exploding in wireless networks resulting in an increase of interferences and reduced operator control. Networks are also becoming more heterogeneous putting additional demand in interference management. Scheduler schedules uplink transmissions from UEs based on a load prediction algorithm that typically assumes worst case. However, UEs do not always use full power granted, and thus, much of granted radio resources are wasted. To address these and other issues, technique(s) to accurately predict/estimate other cell interferences and thermal noise separately and to accurately predict/estimate grant utilization probability and variance is(are) described. Inventive estimation technique(s) can be used to schedule UEs to more fully utilize available radio resources. Extended Kalman filtering can be adapted for use in estimation providing low order computational complexity.

Abstract: Embodiments of the present invention relate to a distance measurement and alarm method and apparatus. The method includes: sending pairing request information for establishing a connection with a receiving terminal; after the receiving terminal is paired with, calculating a current distance to the receiving terminal; comparing the current distance with a preset distance threshold, and if the current distance exceeds the distance threshold, displaying distance prompt information.

Abstract: A method and apparatus for searching carrier frequencies (CFs) including determining all CFs to be measured within a frequency band according to a predetermined frequency interval; selecting part of the CFs as Sampling Measurement CFs (SMCFs) according to a predetermined band search step, and for each of the SMCFs, calculating initial peak to average ratio (PAR) of the SMCFs; weighting the initial PAR of each of the SMCFs by using initial PARs of SMCFs left and right neighboring each of the SMCFs, to obtain a determined PAR of each of the SMCFs; ordering the determined PARs of all the SMCFs, and selecting, in a descending order of the determined PARs, a predetermined number of SMCFs and frequencies to be measured left and right neighboring the selected SMCFs as a search result.

Abstract: A mobile station including an input configured to receive input signals via a channel, a noise measuring module, and a control module. The noise measuring module is configured to measure noise based on the input signals, and generate information in response to measuring the noise based on the input signals. The control module is configured to determine, depending on whether the noise measuring module is able to (i) measure the noise based on the input signals and (ii) generate the information in response to measuring the noise based on the input signals, whether to use a first procedure to estimate a gain of the channel or a second procedure to estimate the gain of the channel, where the first procedure to estimate the gain of the channel is different than the second procedure to estimate the gain of the channel.

Abstract: A method comprises: detecting a first change of a physical property of a signal; starting a measurement of a duration of a first time interval that begins with the detection of the first change; detecting a second change of the physical property; stopping the measurement of the duration of the first time interval and starting a second measurement of a duration of a second time interval in response to the detection of the second change; detecting a third change of the physical property, and stopping the second measurement in response to detecting the third change; determining a relation of the durations of the first time interval and the second time interval from the first measurement and the second measurement; and determining the received data value based on the determined relation of the durations of the first time interval and the second time interval.

Abstract: A switching method and device are disclosed by the present invention. The switching method according to the embodiments of the present invention includes: receiving from a base station a switching indication information that requires a user equipment (UE) to switch a transmission time interval (TTI); sending to the base station a switching confirmation information with which the switching indication information is confirmed; and switching the TTI. The switching method according to the embodiments of the present invention includes: sending to a UE a switching indication information that requires the UE to switch a TTI; and receiving from the UE a switching confirmation information with which the switching indication information is confirmed. By using the switching method and device according to the embodiments of the present invention, the delay of switching the TTI can be shortened and the TTI can be switched quickly.

Abstract: A method, system, and medium are provided for estimating user throughput as a function of network load. The function that governs a relationship between user throughput and network load is derived after simulating network traffic during busy hours on a wireless network. The simulated traffic is shaped to be similar to packet traffic received on the network. In turn, the simulated traffic is assigned to one or more carriers that are configured to resemble the network carriers. Upon processing the simulated traffic, user throughput is calculated and a function is derived from the network load during the busy hour and the calculated user throughput. The derived function is employed to predict the load at which user throughput falls below acceptable levels.

Abstract: Various embodiments are disclosed relating to beacon transmissions in wireless networks. In an example embodiment, a wireless node may receive a beacon from one or more wireless nodes. The receiving node may generate and transmit a beacon map to other wireless nodes in the network. The beacon map may provide information relating to one or more of the received beacons, such as a time stamp or other time information for the beacon and the originating wireless node for the beacon, such as an address of the originating wireless node. In an example embodiment, the beacon map may be transmitted upon request or within a beacon, or within another message. In another example embodiment, a beacon map may be received at a receiving wireless node, including information relating to beacons from one or more other wireless nodes. A status of at least one of the beacons may be determined based upon the beacon map.

Abstract: A computer-implemented method for mapping network topologies may include (1) identifying a network including a plurality of network switches and a plurality of host systems, (2) identifying a host system within the plurality of host systems connected to the network via a network switch within the plurality of network switches, (3) refreshing an address of the host system within the network switch, (4) allowing the address of the host system to expire from each network switch within the plurality of network switches except the network switch, (5) transmitting a probing frame from a probing host system within the plurality of host systems to the address of the host system, (6) identifying a subset of host systems within the plurality of host systems that received the probing frame, and then (7) mapping a topology of the network based on the identified subset. Various other methods, systems, and computer-readable media are also disclosed.

Abstract: Path determination constraints may be encoded in the form of a program having one or more instructions. Each of instructions may include an operation code, and operands (or pointers to locations where operands are stored). In this way, an extensible, interoperable way for a nodes (e.g., label-switching routers) to communicate constraints within a network is provided. Such constraints may be inserted (e.g., as one or more CONSTRAINT objects) into signaling messages (e.g., a PATH RSVP message). By enabling the signaling of constraints, the determination of constraint-based (label-switched) paths can be distributed among a number of (label-switching) routers or other nodes. Upon receiving a message with constraints (e.g.

Abstract: The present invention relates to a wireless network that operates in accordance with the IEEE 802.11n standards and comprises at least one router (2) by which the connections established with the other devices are routed via a wireless network (1), at least one access point (3) which serves as a data transmission point in the network, and at least one client device (4) that uses the network sources; and to a wireless network setup and configuration distribution method (100) which enables to easily configure the devices that connect to the said networks.

Abstract: One embodiment of the present invention provides a switch. The switch includes a local identifier associated with the switch, a receiving interface, a loop detection mechanism, and an interface control mechanism. The receiving interface identifies a loop-detection frame which includes an identifier associated with originating switch of the frame. The loop detection mechanism detects a loop based on a match of the identifier associated with the originating switch and the local identifier. The interface control mechanism is coupled to the loop detection mechanism and precludes, in response to detecting a loop, the receiving interface from forwarding frames corresponding to the loop.

Abstract: A method and apparatus for group owner (GO) renegotiation are provided. For example, the method and apparatus may be used for GO renegotiation in a wireless personal network (WPAN), for example, a 60-gigahertz (60 GHz) peer-to-peer (P2P) wireless network. The incumbent group owner (e.g., personal base station set (PBSS) control point (PCP)) controls the operation of the group. GO renegotiation can occur, for example, when a newly arriving device (e.g., a prospective group owner) is trying to connect to the PBSS and/or, for example, with PCP rearrangement among members of an existing group. As an example, after the formation of the group, the PCP may want to relinquish the role of being the PCP. A procedure is described for deciding among clients and the PCP which device will assume the role of group owner from the existing PCP in the event the role of group owner is to be reassigned.

Abstract: A mobile station performs random access method. The method includes receiving, from a first cell, a message identifying a random access preamble to transmit to a second cell, wherein the first and second cell operate on different frequencies. The method also includes determining whether the random access preamble is from a set of contention based random access preambles. In addition, the method includes receiving a random access response message, wherein the random access response message is addressed to a unique identifier of the mobile station; and transmitting, if the identified random access preamble is from the set of contention based preambles, a timing verification message.

Abstract: Method and system for analyzing a linear programming problem or any other problem involving inequalities constraints set relating to multiple variables. An initial feasible region is calculated based on a sub-set of the constraints set. The feasible region is updated based on the additional constraints added one at a time. The method checks for feasibly, identifies active constraints, and provides end-points of the feasible region. The method may be applied to a control system or to a crossbar switch handling routing between multiple input and multiple outputs, such as digital data networking switch used to route TDM digital data streams being packet, frame or cell based, in a LAN, WAN, MAN or Internet application.