Abstract: This application discloses a sequence generating method and apparatus, and relates to the field of communications technologies, to resolve a problem that a PAPR of a DMRS symbol is higher than that of a data symbol. An initialization factor of a first sequence is obtained, where the initialization factor is associated with a first parameter; and the first sequence is generated based on the initialization factor. In addition, the first parameter is a port number, or the first parameter is a code division multiplexing CDM group identity.

Abstract: This disclosure provides methods, devices and systems for generating a secure long training field (LTF). In some implementations, the secure LTF may include a randomized bit sequence that is difficult, if not impossible, to replicate by any device other than the transmitting device and the intended receiving device. For example, the transmitting device may use a block cipher or stream cipher to generate a pseudorandom bit sequence and may select a subset of bits of the pseudorandom bit sequence to be mapped to a sequence of modulation symbols representing an LTF symbol of the secure LTF. More specifically, each of the modulation symbols is mapped to a respective one of a number of subcarriers spanning a bandwidth of the secure LTF. The transmitting device may further transmit a physical layer convergence protocol (PLCP) protocol data unit (PPDU) that includes the secure LTF to the receiving device.

Abstract: A Multiple Input Multiple Output (MIMO) system in a radio access network (RAN) comprises a virtualized baseband unit, an antenna array; and a fronthaul network that connects the virtualized baseband unit to the antenna array. For a first set of antennas in the antenna array, the virtualized baseband unit generates a first MIMO matrix from channel state information (CSI); computes a sparse update matrix corresponding to an update to the first set of antennas; sums the sparse update matrix with the first MIMO matrix to produce a second MIMO matrix corresponding to a second set of antennas in the antenna array; determines which of the MIMO matrices results in a better CSI, MIMO condition number, peak-to-average-power ratio, or quality metric of spatial subchannels; and based on the determination, selects the first set of antennas or the second set of antennas to transmit or receive signals in the RAN.

Abstract: The present disclosure provides a method for estimating a frequency offset, including: extracting sampling points from an input signal according to preset intervals to obtain a plurality of groups of sampling points, with the preset intervals of the groups of sampling points being different; performing processes on a current sampling point and the groups of sampling points to obtain data of arguments of complex numbers corresponding to the preset intervals; and determining an estimation value of a frequency offset of a current input signal according to the data of arguments of complex numbers corresponding to the preset intervals. The present disclosure further provides an apparatus for estimating a frequency offset, an electronic device and a computer-readable medium.

Abstract: Orthogonal Time Frequency Space (OTFS) is a novel modulation scheme with significant benefits for 5G systems. The fundamental theory behind OTFS is presented in this paper as well as its benefits. We start with a mathematical description of the doubly fading delay-Doppler channel and develop a modulation that is tailored to this channel. We model the time varying delay-Doppler channel in the time-frequency domain and derive a new domain (the OTFS domain) where we show that the channel is transformed to a time invariant one and all symbols see the same SNR. We explore aspects of the modulation like delay and Doppler resolution, and address design and implementation issues like multiplexing multiple users and evaluating complexity. Finally we present some performance results where we demonstrate the superiority of OTFS.

Abstract: A transmit in-phase quadrature (IQ) amplifier includes a common gain stage to receive an input signal and to generate an amplified signal. The amplifier includes an IQ poly-phase filter coupled to the common gain stage to receive the amplified signal from the common gain stage and outputs a four-phase signal. The amplifier includes an in-phase (I) phase switching gain stage coupled to the IQ poly-phase filter to receive I components of the four-phase signal and outputs an amplified phase switching I signal. The amplifier includes a quadrature (Q) phase switching gain stage coupled to the IQ poly-phase filter to receive Q components of the four-phase signal and outputs an amplified phase switching Q signal.

Abstract: Systems and methods are provided for analyzing one or more root causes of service degradation events in a network or other environment. A method, according to one implementation, includes a step of monitoring a plurality of overlying services offered in an underlying infrastructure having a plurality of resources arranged with a specific topology. In response to detecting a negative impact on the overlying services during a predetermined time window and based on an understanding of the specific topology, the method further includes the step of identifying suspect components from the plurality of resources in the underlying infrastructure. The method also includes the step of obtaining status information with respect to the suspect components to determine a root cause of the negative impact on the overlying services.

Abstract: A DCN packet processing method, a network device, and a network system are provided. The DCN packet processing method includes: generating, by a network device, a first DCN packet whose destination address is an IP address of an NMS, loading the first DCN packet into a Flex Ethernet (Flex Eth) overhead multiframe, and sending, over a physical link, the Flex Eth overhead multiframe to a network device that has accessed a network, so that the network device that has accessed the network extracts the first DCN packet, and sends the first DCN packet to the NMS based on the destination address, so as to enable the NMS to perceive that a new network device accesses the network.

Abstract: Various aspects involve a lagged prediction model trained for risk assessment or other purposes. For instance, a risk assessment computing system receives a risk assessment query for a target entity and provides an input predictor record for the target entity to a lagged prediction model. The input predictor record includes a first group of lagged values from a first time-series attribute associated with the target entity. The lagged prediction model is trained by implementing a group feature selection technique configured to select the first time-series attribute as input and to deselect a second time-series attribute associated with the target entity. The risk assessment computing system computes an output risk indicator from the input predictor record and transmits the output risk indicator to a remote computing system. The output risk indicator can be used to control access by the target entity to one or more interactive computing environments.

Abstract: A system that implements a data storage service may store data on behalf of storage service clients. The system may maintain data in multiple replicas of various partitions that are stored on respective computing nodes in the system. The system may employ a single master failover protocol, usable when a replica attempts to become the master replica for a replica group of which it is a member. Attempting to become the master replica may include acquiring a lock associated with the replica group, and gathering state information from the other replicas in the group. The state information may indicate whether another replica supports the attempt (in which case it is included in a failover quorum) or stores more recent data or metadata than the replica attempting to become the master (in which case synchronization may be required). If the failover quorum includes enough replicas, the replica may become the master.

Abstract: Techniques for coordinating the monitoring of output devices. In one technique, one or more messages are received, at a mediation service, over a computer network from a cloud-based management server. The one or more messages include an identity of an output device, an identity of an active mediation service for the output device, and an identity of each failover mediation service in one or more failover mediation services for the output device. Based on the one of the messages, the mediation service determines that it is a failover mediation service. Later, it is determined whether the mediation service is to be a new active mediation service for the output device. In response to an affirmative determination, the mediation service transmits, to the cloud-based management server, a notification that indicates that the mediation service is the new active mediation service. The mediation service also initiates monitoring of the output device.

Abstract: Provided are a network switching method, a network node, a chip and a communication system, the method comprising: a first node acquires indication information, the indication information being used to indicate to the first node to switch a receiving path and/or a transmitting path of a data packet of the first node; and the first node receives and/or transmits the data packet according to the indication information. In the implementations of the present disclosure, the first node directly switches the receiving path and/or the transmitting path of the data packet thereof by means of the indication information, which avoids a reconstruction operation of a PDCP entity of the first node during the switching process of the first node, thereby avoiding an interruption in the service of the PDCP entity, and improving the data transmission efficiency.

Abstract: An example playback device is configured to (i) detect a triggering event that causes the playback device to transmit a first message indicating the playback device is available for setup, (ii) establish an initial communication path with a computing device, (iii) process one or more second messages received from the computing device via the initial communication path collectively containing network configuration parameters for a secure wireless network defined by one or more network devices, where the initial communication path with the computing device does not traverse any of the one or more network devices, and where the network configuration parameters include an identifier of, and security information for, the secure wireless network, (iv) use the network configuration parameters to connect to the secure wireless network, and (v) transition from communicating with the computing device via the initial communication path to communicating with the computing device via the secure wireless network.

Abstract: A method of evaluating change risk in an IT environment, including collecting environment state snapshots of configuration parameters in the IT environment, invoking a manifest of a change on the environment state snapshots to form simulated environment state snapshots, analyzing the simulated environment state snapshots relative to the environment state snapshots, deriving a risk score based on the analysis and selectively perform the change responsive to the risk score.

Abstract: An information handling system may include at least one processor and a memory coupled to the at least one processor. The information handling system may be configured to: receive configuration data from a managed information handling system; receive compatibility data from a vendor of the managed information handling system; determine, based on the configuration data and the compatibility data, that the managed information handling system has drifted from a predetermined configuration; and based on the determination of drift, execute a responsive action with regard to the managed information handling system.

Abstract: The present invention provides a computing power scheduling method, apparatus, electronic devices and storage medium, the method comprising: a computing power node and an access terminal send computing power information to a switch using L4 network protocol; the switch uploads the computing power information to a distributed SDN subcontroller; the distributed SDN subcontroller collects switch state information and network quality information from the switch using in-band network telemetry technology; the distributed SDN sub-controller collects switch state information and network quality information from the switch using in-band network telemetry; the distributed SDN sub-controller uploads the computing power information, switch state information and network quality information to the SDN master controller; the SDN master controller determines the computing power scheduling policy based on the computing power information, switch state information, network quality information and master controller information

Abstract: Processing logic may obtain a configuration file of each of one or more proxies. Processing logic may parse the configuration file of each of the one or more proxies to determine one or more connections for each of the one or more proxies as defined by the configuration file. Each connection may support incoming or outgoing communication for each of the one or more proxies. Processing logic may generate a map that includes the one or more connections for each of the one or more proxies.

Abstract: A network quality detection method and device, a network element device, a computer device, and a computer readable medium. The method comprises: separately sending a subscription command to an ingress network element device and an egress network element device of a service flow, the subscription command comprising at least a detection type and a reporting period, so that network element devices bearing the service flow send data according to the detection type and the reporting period; receiving the data sent by the network element devices; determining the path of the service flow according to the data; and detecting the network quality of the path according to the data and a predetermined indicator threshold.

Abstract: Various approaches are discussed for generation of SOAR playbooks using a variety playbook sources.

Abstract: The embodiments of the present invention relate to the field of communication. Disclosed are a method for evaluating network quality, an electronic device, and a storage medium. The method for evaluating network quality of the present invention includes: generating a target network topology according to node information in a current network, the target network topology being a network topology structure in which a master node is directly connected to each sub node; determining a network transmission cost of the target network topology as a first network transmission cost and a network transmission cost of the actual network topology as a second network transmission cost according to the node information in the current network, the target network topology and an actual network topology of the current network; and determining a quality evaluation result of the current network according to the first network transmission cost and the second network transmission cost.

Abstract: Systems and methods for scale testing infrastructure as a service systems are disclosed. A processing device generates a container image including a plurality of processes for providing compute functions and modifying a fake virtual driver with network switch functionality. The plurality of processes includes a compute process to create fake virtual machines using the modified fake virtual driver. The processing device generates a plurality of simulated compute nodes using the container image and generates a plurality of fake virtual machines using the modified fake virtual driver on one or more simulated compute nodes, scheduled as pods using a container orchestration engine. In this way, network and messaging traffic on the control plane is effectively simulated at scale. The modified fake driver enables network switch functionality so that network configuration for each fake virtual machine may be simulated, thereby mimicking the network actions of a virtual machine on a compute node.

Abstract: Configuring cloud deployments based on learnings obtained by monitoring other cloud deployments, including: determining normal behavior for one or more components in a first cloud deployment; determining normal behavior for one or more components in one or more other cloud deployments; and recommending, based on the normal behavior for one or more components in one or more other cloud deployments, a change to the first cloud deployment.

Abstract: In some examples, a system can execute an iterative optimization routine on a set of candidate physical locations for an object. Each iteration can involve a series of operations. The operations can include selecting one of the candidate physical locations; determining a predicted demand value for the candidate physical location based on a first traffic score and a second traffic score associated with the candidate physical location; and determining a predicted overhead value for the candidate physical location. The operations can also include determining a predicted cannibalization factor for the candidate physical location; and generating an overall score for the candidate physical location based on the predicted demand value, the plurality of predicted overhead values, and the predicted cannibalization factor. The system may then identify one or more of the candidate physical locations as optimal locations based on their overall scores and display the optimal locations on a geographical map.

Abstract: A system and methods comprise a touchscreen at a premises. The touchscreen includes a processor coupled to a security system at the premises. User interfaces are presented via the touchscreen. The user interfaces include a security interface that provides control of functions of the security system and access to data collected by the security system, and a network interface that provides access to network devices. A camera at the premises is coupled to the touchscreen via a plurality of interfaces. A security server at a remote location is coupled to the touchscreen via a plurality of channels and a plurality of protocols. The channels include a short message service (SMS) channel, a remote control channel, and an asynchronous event channel. The security server comprises a client interface through which remote client devices exchange data with the touchscreen and the security system.

Abstract: Systems and methods include receiving Operations, Administration, Maintenance, and Provisioning (OAM&P) data from an optical network; providing a Graphical User Interface (GUI) based on the OAM&P data with the GUI including a topology view; and providing a visualization that includes one of a power readings graph, a spectral analysis graph, and a spectral allocation graph, in the GUI, and the visualization is positioned logically next to the topology view.

Abstract: A method, computer program product, and computing system for generating a logical network for a virtual storage appliance deployed in a cloud computing environment. The logical network may be associated with a cloud subnet network interface within the cloud computing environment. One or more logical network addresses may be allocated from the cloud subnet network interface within the cloud computing environment to the virtual storage appliance.

Abstract: Methods and systems are disclosed for performing generating AR experiences on a messaging platform. The methods and systems receive, from a client device, a request to access an augmented reality (AR) experience and access a list of event types associated with the AR experience used to generate one or more metrics. The methods and systems determine that an interaction associated with the AR experience corresponds to a first event type of the list of event types and generates interaction data for the first event type representing the interaction. In response to receiving a request to terminate the AR experience, the systems and methods transmit the interaction data to a remote server.

Abstract: A computer implemented method performed by a node in a communications network comprises obtaining Key Performance Indicator, KPI, targets for a plurality of KPIs, in the communications network, and determining relationships between the KPIs using a model trained using a graph-based machine learning process. Each relationship describes a manner in which changing a network configuration to alter a first one of the plurality of KPIs affects a second one of the plurality of KPIs. The method then comprises determining one or more conflicts between the KPI targets, using the relationships.

Abstract: A rate negotiation method is provided. A first device switches a fiber transmission rate of a first port of the first device to a first fiber transmission rate based on a preset switching direction within a rotation period of a first fiber transmission rate set. The first device sends a negotiation packet to a second device through the first port of the first device within a duration of the first fiber transmission rate. If a response packet is received from the second device through the first port of the first device within the duration of the first fiber transmission rate, the first port of the first device is controlled to communicate with the second device based on the first fiber transmission rate.

Abstract: A network component management method and a network device are disclosed. The method includes: obtaining, by a network component management unit, performance assurance information of a network component, where the performance assurance information includes at least one of the following: key performance information, performance assurance priority information, or performance assurance enabling information, where the key performance information is used to indicate a key performance of the network component, and the performance assurance enabling information is used to instruct to enable or disable at least one performance assurance function of the network component; and managing, by the network component management unit, the network component based on the performance assurance information. The network component management method and the network device provided in the present disclosure can improve network component management efficiency.

Abstract: Systems and methods for troubleshooting and performance analysis of a cloud-based service include receiving metrics over time from a plurality of analyzers, wherein the metrics include service-related metrics and network-related metrics related to a cloud-based service, wherein each analyzer of the plurality of analyzers is executed at one of a user device accessing the cloud-based service and in the cloud-based service, and wherein at least one analyzer is executed in the cloud-based service; analyzing the metrics to determine a status of the cloud-based service over the time; and identifying issues related to the cloud-based service utilizing the analyzed metrics over the time, wherein the issues include any of an issue on a particular user device, an issue in a network between a particular user device and the cloud service, and an issue within the cloud service.

Abstract: A network traffic device comprising: at least one network device adapted to receive network data packets; wherein said at least one network device filters network data packets to locate at least one identifying packet, and samples said network data packets to select at least one sample packet. The at least one network device may transfer said at least one identifying packet and said at least one sample packet to an analyser. A predetermined sample rate may determine the number of sample packets selected by said at least one network device.

Abstract: Example data processing methods and apparatus are described. One example data processing method includes receiving data description information and reported data, where the data description information includes at least one of a vendor name, network element version information, a data type supported by a network management system, or a coding mode supported by the network management system. The reported data is converted based on the data description information, where reported data obtained through conversion meets a virtual network function event streaming (VES) specification. A VES event is sent, where the VES event includes the reported data obtained through conversion.

Abstract: Systems, methods, and computer-readable media for annotating process and user information for network flows. In some embodiments, a capturing agent, executing on a first device in a network, can monitor a network flow associated with the first device. The first device can be, for example, a virtual machine, a hypervisor, a server, or a network device. Next, the capturing agent can generate a control flow based on the network flow. The control flow may include metadata that describes the network flow. The capturing agent can then determine which process executing on the first device is associated with the network flow and label the control flow with this information. Finally, the capturing agent can transmit the labeled control flow to a second device, such as a collector, in the network.

Abstract: Embodiments of a device and method are disclosed. In an embodiment, a method of network diagnostic of a network deployed at a customer site involves at a cloud server connected to the network deployed at the customer site, collecting connectivity state information of the network deployed at the customer site and at the cloud server, performing a network diagnostic operation based on the connectivity state information.

Abstract: Embodiments of this application provide a bit-forwarding ingress router, a bit-forwarding router, and an OAM test method, and pertain to the field of multicast networks. A first BFR receives an OAM request packet from a BFIR; the first BFR determines, according to the OAM request packet, that a destination BFR corresponding to the OAM request packet is the first BFR; and the first BFR obtains a first OAM response packet according to an ID of the BFIR, and sends the first OAM response packet to the BFIR. According to the method and the apparatus that are provided in the embodiments of this application, a problem that a BFIR cannot diagnose or handle a transmission fault when the fault occurs during transmission of a multicast packet can be resolved, which helps implement connectivity testing by using an OAM packet and enables testing of multiple BFERs.

Abstract: Client status pairs are obtained for clients. Each of the client status pairs includes a first client status assigned by a first network entity and a second client status assigned by a second network entity. Mismatched client status pairs are identified from the client status pairs. Each mismatched client status pair includes a discrepancy between the first and second client status. A data structure is generated that stores the mismatched client status pairs in a portion of the data structure. The portion is associated with a unique type of mismatched client status pair. A script configured for the unique type is executed. For each mismatched client status pair stored in the portion, the script modifies a data store associated with the first network entity to replace the first client status with the second client status.

Abstract: A packet transfer apparatus registers time information from a system clock on a CPU region to a time information holding table on a hardware region, adds a receiving time to a received packet using a counter value on a hardware clock and the time information registered in the table, and transfers, to a transfer destination, the packet to which the receiving time has been added.

Abstract: An example method includes receiving, by a computing system, a declarative testing descriptor for active testing of a virtualized service; obtaining, from an orchestration layer, metadata associated with the virtualized service, wherein the metadata specifies a unique name for a virtualized service within the namespace of a cluster managed by the orchestration layer; determining, by the computing system using the declarative testing descriptor and the metadata, an active testing configuration for an instance of the virtualized service; and starting an active test according to the active testing configuration and determining service level violations for the instance of the virtualized service based on a result of the active test.

Abstract: Devices, methods and computer program products for managing quality of monitoring models for collection of performance and/or sensing data are disclosed. A communication network node device sets up a quality of monitoring function for managing a quality of monitoring, QoM, model that defines QoM classes for processing and compressing a performance and/or sensing data stream via selection of data to be included in the performance and/or sensing data stream. The communication network node device causes a first message notifying about the set up QMF to be transmitted towards at least one first target rendezvous point, RP, in the communication network, each RP being configured to aggregate at least one of performance and/or sensing data streams or QoM models.

Abstract: A method for heuristics-based link prediction in multiplex networks may include a link prediction computer program: receiving a model for a multiplex network; defining a property matrix that specifies feature for cross-layer correlation; constructing a cross-correlation matrix from the property matrix; applying a count and weight correlation heuristic to the cross-correlation matrix, wherein the count and weight correlation heuristic counts a number of layers that contain a link between two nodes, and weights that count according to cross-layer correlations; applying a correlation weighted heuristic to the cross-correlation matrix; applying a count correlation-weighted heuristic to the cross-correlation matrix that counts the number of layers that contain a link between two nodes and weights that count according to both cross-layer correlations and values resulting from evaluating a monoplex heuristic applied to each layer in the multiplex network, resulting in output values; and identifying a missing link ba

Abstract: A network device can include a main processor and a packet processor. A method is provided that includes storing a table of values in the packet processor, using the packet processor to receive from the main processor a value that can be used to update the table of values, and using acceleration hardware in the packet processor to update the table of values based on the value received from the main processor without any additional interaction with the software running on the main processor.

Abstract: According to a communication method, a local device and a peer device notify each other through a border gateway protocol (BGP) message whether the local device and the peer device have a control word processing capability. When the peer device also has a control word processing capability, the peer device uses a service packet to carry a control word. When the local device has no control word processing capability, no control word is carried when the peer device sends a service packet to the local device.

Abstract: A forwarding path determining method includes: determining, by a path computation node, a first SR-BE forwarding path from a first node to a second node in a first virtual network; determining a second SR-BE forwarding path from the first node to the second node in a physical network; and when the first SR-BE forwarding path completely overlaps the second SR-BE forwarding path, determining the first SR-BE forwarding path as a target forwarding path from the first node to the second node in the first virtual network; or when the first SR-BE forwarding path does not completely overlap the second SR-BE forwarding path, determining, by the path computation node, a first SR-TE forwarding path according to the physical network and the first virtual network, and determining the first SR-TE forwarding path as a target forwarding path from the first node to the second node in the first virtual network.

Abstract: In one embodiment, a device generates a plurality of smoothed timeseries by applying smoothing envelopes of different durations to a timeseries of a path metric for a path in a network that is used to convey traffic of an online application. The device uses the plurality of smoothed timeseries and the timeseries of the path metric to make predictions as to whether the path will provide an unacceptable user experience in the online application. The device selects a smoothing envelope of a particular duration, by comparing performance metrics for the predictions. The device uses a timeseries of the path metric smoothed using the smoothing envelope of the particular duration to make predictive routing decisions in the network for the traffic of the online application.

Abstract: A request from a client device is received at a first one of a plurality of compute nodes at a first one of a plurality of data centers of a distributed cloud computing network. A destination of the request is determined. An optimized route for transmitting the request toward an origin server that corresponds with the destination of the request is determined, where the optimized route is based on at least in part on probe data between data centers of the distributed cloud computing network for a plurality of transit connections, and where the optimized route has an IP address that encodes an identification of which of the plurality of transit connections is to be used to deliver the request. The request is transmitted to a next hop as defined by the optimized route over the identified one of the plurality of transit connections.

Abstract: A network system that uses a cluster of edge nodes to send and receive multicast traffic is provided. The network system is a network virtualization environment that includes one or more distributed routers, each distributed router implemented by virtualization software running on one or more host machines. The network system also includes a cluster of edge nodes for sending data from the one or more distributed routers to one or more uplink/upstream physical routers outside of a datacenter and for receiving data from the physical routers to the distributed routers. One of the edge nodes is a designated edge node that queries for membership information for one or more multicast groups to be received by at least two edge nodes of the cluster of edge nodes. The cluster of edge nodes forwards multicast traffic to and from the distributed routers according to the received membership information.

Abstract: Disclosed are a data transmission method and a related product. The method includes: when it is detected that a data replication transmission function of a PDCP layer entity is activated, a terminal enabling a first RLC layer entity, a second RLC layer entity being in an enabled status; and invoking the PDCP layer entity to determine a first PDCP PDU associated with a first PDCP SDU, and sending the first PDCP PDU to the first RLC layer entity, wherein the first PDCP PDU is used for the first RLC layer entity and a MAC layer entity to process the first PDCP PDU into a MAC PDU and send same.

Abstract: Embodiments of a device and method are disclosed. In an embodiment, a method for switch management involves connecting switches to form a switch ring, and within the switch ring, configuring each of the switches to participate equally in network communications.

Abstract: In cloud computing, for various reasons such as load-balancing, hotspot elimination, server consolidation, energy and cost savings, and system maintenance, there is a need to migrate a virtual sub-network of virtual entities from a source network of servers to a destination set of servers. Existing migration methods are limited to the migration of VM memory and controller states, where network entities are migrated individually. Embodiments of this disclosure include systems and methods for the stateful live migration of a multi-layer network, while maintaining live state convergence and consistency, and preventing network connection losses, packet disordering and packet drops.