Abstract: A method for security and/or automation systems is described. In some embodiments, the method may include detecting departure data relating to at least one of an occupant and a premises, identifying a likelihood of an absence in relation to the premises based at least in part on the departure data, and sending a confirmation request based at least in part on the identifying for the occupant associated with the premises to confirm the absence. In some cases, the absence may include the premises being unoccupied for at least a portion of a predetermined time period. The predetermined time period may include at least one night.

Abstract: A method for determining an operation to be performed for an object identified by a device, and an apparatus therefor are disclosed. In one embodiment, the method includes generating representative identification information of the terminal, transmitting, to a server, user information including the representative identification information of the terminal, and advertising the representative identification information of the terminal. According to another embodiment, a service receiver and a service provider can use all available services even while minimizing requirements that must be fulfilled. The present disclosure may be directed to a technology for a sensor network, machine to machine communication, machine type communication and Internet of things.

Abstract: Provided are a communication control device and a communication system capable of detecting message transmission in the case where an invalid device transmits a message to a common communication line. A monitoring device decides a reference time point t0 for periodical message transmission by an ECU, decides multiple scheduled transmission time points t1, t2, . . . obtained by adding a period corresponding to an integer multiple of a transmission cycle T of a message to the reference time point t0, and decides that a predetermined period including each of the scheduled transmission time points is a permission period for message transmission. The monitoring device determines whether or not a detected message on a CAN bus has been transmitted during the permission period. If determined that transmission of an invalid message is not permitted, the monitoring device performs processing of causing the ECU which receives the message to discard the message.

Abstract: Embodiments of the present disclosure provide a failure protection method based on a ring protection link, a device, and a system, and nodes in the ring protection link include a forwarding device in an SDN. The method includes: receiving, by a network controller, a high-priority failure message sent by a first node, where the failure message includes information used to indicate a failure; obtaining, according to the failure message, data information about port state changes that are of the nodes and that are caused by the failure; and sending a high-priority switching message to each of the nodes, so that each of the nodes updates a local MAC address table according to the switching message, where the switching message includes the data information about port state changes that are of the nodes and that are caused by the failure.

Abstract: A cloud-networked stand-alone local area network (LAN) is disclosed. A stand-alone LAN is networked to a server outside the stand-alone LAN, and the server is part of a cloud of servers. The server includes hardware processors that process system operation information updates from a user for the stand-alone LAN, hardware memory that stores the system operation information updates; and a transceiver for communicating the system operation information updates to the stand-alone LAN. The stand-alone LAN includes a primary network hub (PNH) having a microcontroller that stores the system operation information, a cloud-side transceiver networked to the cloud of servers for receiving the system operation information updates from the server, and a PNH LAN long range transceiver that communicates via a long range spread spectrum or a narrowband frequency shift keying signal. The stand-alone LAN also includes a peripheral device having a microcontroller and an actuation mechanism.

Abstract: An edge switch receives a VM classification policy and an executing policy corresponding to each VM class distributed by a policy controller. The executing policy comprises information of each service node for processing a message and an executing sequence of the each service node. The edge switch receives a message sent by a VM connected to the edge switch, determines a VM class corresponding to the message according to the VM classification policy and determines an executing policy corresponding to the VM class. The edge switch encapsulates the message according to information of each service node to be executed by a VM of the VM class and an executing sequence, and sends the message, so that the message is sequentially sent to the each service node to be executed by the VM of the VM class to execute a service policy.

Abstract: A node within a wireless endpoint device may be coupled to multiple heterogeneous networks simultaneously. The node is configured to select between the different networks based on various constraints associated with the endpoint device, applications executing on the endpoint device, traffic routed by the endpoint device, and constraints associated with the multiple networks. Based on these different constraints, and based on the current operating mode of the node, the node rates each network, and then selects the network with the highest rating to be used for routing purposes.

Abstract: A forwarding path link table packet is generated, the forwarding path link table packet comprises forwarding information of each SDN switch on a forwarding path; and the forwarding path link table packet is delivered to any one of SDN switches on the forwarding path, to enable the forwarding path link table packet to be delivered among SDN switches on the forwarding path, so as to cause each SDN switch that receives the forwarding path link table packet to generate a forwarding flow table entry of the SDN switch according to the forwarding information of the SDN switch in the forwarding path link table packet, and forward the forwarding path link table packet on the forwarding path.

Abstract: Methods, devices and systems are disclosed for dynamically adjusting the load priority of a backup nameserver in a computer network based on the health and responsiveness of primary and backup nameservers.

Abstract: According to at least some example embodiments, service interworking methods and systems are provided to identify registered users using different user identification systems performed by a first server having at least one processor and configured to identify registered users using a first user identification system, the method comprising: generating a first reference identifier of a first user in association with a first identifier identifying the first user in the first user identification system; managing the first reference identifier in association with the first identifier; receiving a second identifier identifying the first user in a second user identification system from the first user; and transmitting the first reference identifier and the second identifier to a second server configured to identify registered users using the second user identification system.

Abstract: A receiver baseband processor and method for performing preamble detection and Time-of-Arrival, ToA, estimation for a single-tone frequency hopping random access preamble. The processor FFT processes a received signal and identifies logical tones. For each logical tone, the processor reads received symbols; determines a ToA estimate; forms a statistic based on the ToA estimate; compares the statistic to a preamble threshold; and when the statistic is greater than or equal to the threshold, determines a preamble is present and utilizes the ToA estimate for a timing advance command.

Abstract: A method to be performed at a station configured to connect to a Long Term Evolution radio access network (LTE-RAN) to utilize enhanced Multimedia Broadcast Multicast Services using a Multicast-Broadcast Single-Frequency Network (MBSFN). The method including receiving a MBSFN subframe having a MBSFN subframe structure including a plurality of Orthogonal Frequency-Division Multiplexing (OFDM) symbols, a first one of the OFDM symbols having a first reference symbol inserted therein, a second one of the OFDM symbols having a second reference symbol inserted therein, determining a rate of change of channel conditions being experienced by the station and performing a non-destaggered channel estimation when the rate of change of channel conditions is greater than a predetermined threshold, the non-destaggered channel estimation using a first Channel Impulse Response (CIR) at the first OFDM symbol and a second CIR at the second OFDM symbol.

Abstract: A method for transmitting control systems over twisted pair cabling. The method includes: receiving a first single-ended transmission signal; converting the first single-ended transmission signal to a first differential transmission signal; transmitting the first differential transmission signal over a first two pairs of wires via a common mode of a transformer; receiving a first differential reception signal over a second two pairs of wires via the common mode of the transformer; and converting the first differential reception signal to a first single-ended reception signal.

Abstract: An approach for increasing transmission throughput of a non-linear wireless channel, and efficient decoding of the transmitted signal via a simplified receiver, is provided. A signal reflects a source signal, and includes linear inter-symbol interference based on a faster-than-Nyquist signaling rate and a tight frequency roll-off, and non-linear interference based on high-power amplification for transmission over the wireless channel. The signal is received over a non-linear wireless channel, and is processed via a plurality of decoding iterations. A set of soft information of a current decoding iteration is generated based on a current estimate of the source signal and a final set of soft information from a previous decoding iteration. The current estimate of the source signal is based on an estimate of the linear ISI and the non-linear interference, which is based on the final set of soft information from the previous decoding iteration.

Abstract: A signaling circuit having a selectable-tap equalizer. The signaling circuit includes a buffer, a select circuit and an equalizing circuit. The buffer is used to store a plurality of data values that correspond to data signals transmitted on a signaling path during a first time interval. The select circuit is coupled to the buffer to select a subset of data values from the plurality of data values according to a select value. The equalizing circuit is coupled to receive the subset of data values from the select circuit and is adapted to adjust, according to the subset of data values, a signal level that corresponds to a data signal transmitted on the signaling path during a second time interval.

Abstract: An equalization circuit may include a buffer configured to sense an input signal according to a reference voltage. The equalization circuit may include a reference voltage generator configured to generate the reference voltage. The reference voltage may be changed in conformity with noise of the input signal.

Abstract: An equalization circuit may include a buffer configured to sense an input signal according to a reference voltage. The equalization circuit may include a reference voltage generator configured to generate the reference voltage. The reference voltage may be changed in conformity with noise of the input signal.

Abstract: A transmit circuit can be configured to output two-level pulse amplitude modulation (PAM-2) or four-level pulse amplitude modulation (PAM-4). In the PAM-2 mode, pre-tap feed-forward equalization (FFE) and post-tap FFE can be applied to the PAM-2 signal by pre-taps and post-taps, respectively. In the PAM-4 mode, at least one post-tap is repurposed to generate, along with the main tap, the main PAM-4 signaling levels. At least one PAM-2 FFE tap is repurposed to apply FFE in the PAM-4 mode.

Abstract: Disclosed embodiments include a receiver having an input that receives a frequency shift key (FSK) signal having a preamble comprising preamble symbols, a phase compensator that applies a compensation vector to one of first and second samples of a first preamble symbol, wherein applying the compensation vector to the one of the first and second samples produces a compensated sample, a demodulator that determines a phase offset between the compensated sample and the other one of the first and second samples of the first preamble symbol, and a frequency offset mapper that determines a frequency offset based at least upon the phase offset. The receiver applies the frequency offset to the FSK signal.

Abstract: The inventive phase measuring device includes a first A/D converter 2 that digitizes a first periodical input signal X at each predetermined sampling timing and outputs the resultant signal as a digital signal Xd, a first zero-crossing identification means operable to detect a sign of Xd, a counting processing unit 4 that counts a difference in the number of times of zero-crossing detection by the first zero-crossing identification means and calculates the difference at each sampling timing, and a fraction processing unit 5 that computes a fraction of the number of times of zero-crossing detection on the basis of Xd at sampling timings immediately before and immediately after determination of zero-crossing by the first zero-crossing identification means. An averaging processing unit 6 performs averaging by adding up and totalizing the outputs from the counting processing unit 4 and the fraction processing unit 5, thereby computing a phase.

Abstract: A broadcast signal receiver is disclosed. A broadcast signal receiver according to an embodiment of the present invention comprises a synchronization & demodulation module performing signal detection and OFDM demodulation on a received broadcast signal; a frame parsing & deinterleaving module performing parsing and deinterleaving of a signal frame of the broadcast signal; a demapping & decoding module performing conversion of data of at least one Physical Layer Pipe (PLP) of the broadcast signal into the bit domain and FEC decoding of the converted PLP data; and an output processing module outputting a data stream by receiving the at least one PLP data.

Abstract: System and method embodiments are provided for high efficiency wireless communications. In an embodiment, a method in a network component for transmitting a frame of two different fast Fourier transform (FFT) sizes includes generating a frame, wherein the frame comprises orthogonal frequency-division multiplexing (OFDM) symbols in two different FFT sizes, wherein the frame comprises a first portion and a second portion, wherein the first portion comprises a first FFT size and the second portion comprises a second FFT size; and transmitting the frame during a single transmission opportunity.

Abstract: This disclosure describes systems, methods, and devices related to an enhanced multiple input multiple output (MIMO) preamble frame. A device may determine a MIMO frame including a first section and a second section. The device may generate an enhanced MIMO frame including at least in part a modified first section and the second section of the MIMO frame. The device may determine a first stream and a second stream associated with at least one antenna of the device. The device may cause to send the enhanced MIMO frame to one or more first devices on the first stream. The device may cause to send the MIMO frame to the one or more first devices on the second stream.

Abstract: A transmitter transmits payload data using Orthogonal Frequency Division Multiplexed (OFDM) symbols. The transmitter comprises a frame builder configured to receive the payload data to be transmitted and to receive first signalling data for use in detecting and recovering the payload data at a receiver, and to form the payload data and the first signalling data into frames for transmission, the first signalling data forming a part of the frames with the payload data. A modulator is configured to modulate a first OFDM symbol with the first signalling data and to modulate one or more second OFDM symbols with the payload data. A signature sequence processor provides a signature sequence, a combiner combines the signature sequence with the first OFDM symbol, and a transmission unit transmits the first and second OFDM symbols.

Abstract: A system and method of providing a modulated signal useable in a signal transmission system. The method includes transforming, perhaps with respect to both time and frequency, a data frame including a plurality of data elements into a transformed data matrix. The transformed data matrix includes a plurality of transformed data elements where each of the plurality of transformed data elements is based upon each of the plurality of data elements. The method further includes generating the modulated signal in accordance with the transformed data elements of the transformed data matrix.

Abstract: A method to compensate a carrier frequency offset (CFO) in a receiver is disclosed. The method includes receiving discrete time samples, obtaining a sample vector from the received discrete time samples, obtaining tentative CFO estimates based on the sample vector, selecting a CFO having a greatest compensation coefficient from the tentative CFO estimates, and compensating the CFO in the received discrete time samples.

Abstract: A tone map selecting device includes: a bit-number-per-symbol providing circuit, providing a plurality of bit numbers per symbol, each of which associated with a tone map; a calculating circuit, performing a predetermined calculation on the bit numbers per symbol to generate a calculation result; and a selecting circuit, identifying one of the bit numbers per symbol that satisfies a predetermined relationship with the calculation result, and selecting the tone map associated with the bit number per symbol satisfying the predetermined relationship as a default tone map.

Abstract: A base station is configured to communicate with at least a first user equipment (UE) and a second UE, wherein the base station is configured to communicate with the first UE using a first modulation scheme, and with the second UE using a second, different, modulation scheme, wherein communications with the first and second UEs are arranged to be substantially orthogonal to each other. A method of allocating resources in a communication network comprising a base station operable to communicate with a first user equipment (UE) and a second UE, the method comprising using a first modulation scheme for communication with the first UE, and using a second, different, modulation scheme for communication with the second UE, wherein communications with the first and second UEs are configured to be substantially orthogonal to each other.

Abstract: The present disclosure relates to a 5G or pre-5G communication system to be provided for supporting a higher data transmission rate beyond 4G communication systems such as LTE. A method for modulation in a transmitter for transmitting a signal in a wireless communication system according to an embodiment of the present invention comprises: a step for determining a modulation scheme; a step for, if the determined modulation scheme corresponds to a specific modulation scheme, converting encoded information bits to quadrature amplitude modulation (QAM) symbols in accordance with a predetermined QAM modulation order, selecting a sequence corresponding to an element of an integer vector in a predetermined sequence set, repeating the converted QAM symbols for a predetermined sequence length, and outputting signals by multiplying the repeated QAM symbols and the selected sequence; and a step for transmitting the outputted signals to a receiver.

Abstract: A serial tap device consists of a first serial port, a second serial port directly connected to the first serial port by multiple serial lines, and a switch configured to selectively connect one or more of the multiple serial lines to a convertor module. The convertor module is configured to convert serial communications signals from the one or more serial lines to transistor-transistor logic (TTL) level signals. The serial tap device includes a communications module and a processor which operates to capture data from the TTL level signals, generate packets containing the captured data, and transmit the packets to a communications network, such as the internet, through the communications module. The serial tap device may be connected inline, between two serial devices, in order to capture data exchanged in serial communication flows between the devices and transmit the captured data to a remote server.

Abstract: Methods, systems, and media for media transmission and management are provided.

Abstract: A wireless communications system includes a packet core network, and a wireless access network including a base station and a terminal. The wireless communications system includes plural terminals; and a base station configured to perform a process related to a proximity-based communications service between the plural terminals and when a failure in a connection between the base station and the packet core network occurs, the base station causes execution of proximity-based communication between the plural terminals by using the process related to the proximity-based communications service and performing authentication and authorization of communication with a terminal connected to the base station among the plural terminals.

Abstract: A virtual machine fault tolerance method, including receiving a network request, and separately sending the network request to a primary virtual machine and a secondary virtual machine, receiving a network response data packet, where the network response data packet is a primary-end data packet transmitted by the primary virtual machine or a secondary-end data packet transmitted by the secondary virtual machine, comparing data of the received network response data packet with the peer-end data according to data byte order when peer-end data is stored, and generating and sending a newly created data packet to the client when the compared data is the same, where the newly created data packet includes the compared data. Hence, network performance and computing performance of the primary virtual machine can be improved without modifying network protocol stacks of the primary virtual machine and the secondary virtual machine.

Abstract: The present disclosure relates to communication networks. Some embodiments may include a communication network with two or more network nodes each comprising: a receiver discerning the signal quality of received signals; a transmitter sending signals at different data rates; and a controllable terminating impedance. A network node transmits the discerned signal quality to one or more additional network nodes, a network node records the signal qualities and corresponding values of the terminating impedances of the respective network nodes. A network node prescribes for additional network nodes a new respective value to set as a terminating impedance. A network node determines new terminating impedance values to optimize the data rate between the various network nodes and the signal quality at each of the network nodes.

Abstract: Techniques to dynamically configure target bitrate for streaming network connections are described.

Abstract: Examples for network function virtualization are described. These examples include accessing definition data defining a virtual network function, the virtual network function comprising one or more components. The definition data is then instantiated to generate an instance of the virtual network function. Physical computing resources may then be assigned to the instance of the virtual network function.

Abstract: A system and method of processing media traffic for a hub-based system federating disparate unified communications systems is disclosed. According to one embodiment, a system includes a federation server that is configured to connect to a first unified communications system and a second unified communications system, where the federation server receives a media call initiation request from a first client of the first unified communications system, where the media call initiation request initiates a media call with a second client of the second unified communications system, and where the federation server provides a uniform resource locator to the second client based on the media initiation request, wherein the uniform resource locator is configured to direct a user on the second client to a browser to accept the media call.

Abstract: A tracking device can be reconfigured after an amount of operation to preserve the battery capacity of the tracking device and to ensure that the tracking device can be operated for a pre-determined threshold period of time. The tracking device can provide diagnostic information representative of a state of the tracking device, such as a current power capacity of the tracking device's battery, to a mobile device within a threshold proximity of the tracking device. The mobile device can then provide the diagnostic information to a tracking server, which in turn can provide reconfiguration instructions to the mobile device.

Abstract: A computer program product with instructions for providing quality of service includes identifying a high network traffic event at a node, providing a user score to each user account of a plurality of user accounts, wherein the plurality of user accounts corresponds to a plurality of user devices connected to the node, and responsive to identifying the high network traffic event, providing instructions to a subset of user devices of the plurality of user devices, wherein the instructions instruct the subset of devices to enter a low traffic mode, and wherein each device of the subset of devices corresponds to a user account with a user score below a threshold.

Abstract: System and method for supporting subnet number aliasing in a high performance computing environment. In accordance with an embodiment, a fabric member can be assigned, by a global fabric manager, an alias fabric local subnet number in order to keep a fabric running after a fabric reconfiguration. The alias fabric local subnet number can be assigned for a period of time, the period of time being static, configurable, or indefinite.

Abstract: Compatibility and/or compliance testing for a wireless cellular network may be performed using a testing system that includes a device that implements multiple base stations in a single hardware device. Additionally, a network simulation server may simulate a core portion of the wireless cellular network. Test cases, such as test cases defined using a scripting language, may be received and the test cases may be interpreted to obtain configuration information for the testing system. Based on the configuration information, the base stations and the simulated network devices may be initially configured. After configuration, and based on the test case, a UE may be controller to interact with the simulated network in a manner implements the desired compatibility and/or compliance tests.

Abstract: Disclosed embodiments include a method of operation of a distributed network system. The method includes nodes of the network system that send messages over a protocol-independent message bus, and other nodes that receive the messages. Content from the received messages can be stored in a database distributed among nodes of the network system. At least some of the content stored in the database is published. The published content can be accessed by one or more applications to perform one or more functions.

Abstract: A network management method, device, and system used for network management and pertains to the communications field, where the method includes detecting bandwidth required by a first data flow, determining whether the bandwidth required by the first data flow is greater than a preset bandwidth value when the bandwidth required by the first data flow becomes higher, and allocating bandwidth to the first data flow when the bandwidth required by the first data flow is greater than the preset bandwidth value. Hence, a problem that a controller has relatively low efficiency when performing network management is resolved, thereby improving efficiency of performing network management by the controller.

Abstract: The present disclosure discloses infrastructure resource states which may be configured for use in managing both infrastructure resources (IRs) and virtualized infrastructure resources (VIRs). The new resources states may include a Network Unequipped (NU) state, a Network Equipped (NE) state, a Network Ready (NR) state, a Service Ready (SR) state, an Out-of-Service (OOS) state, and an In-Service (IS) state. The infrastructure resource states may be configured to enable resource transfers in a programmable virtual infrastructure having one or more tenants (e.g., Owners, BUs, Partners, Customers, or the like) at one or more hierarchical layers.

Abstract: In some implementations, a method includes obtaining a first visual representation of a first network topology of a network and a second visual representation of a second network topology. The first network topology includes a first set of network devices and a first set of connections between the first set of network devices. The second network topology includes a second set of network devices and a second set of connections between the second set of network devices. The method also includes alternating between presenting the first visual representation and presenting the second visual representation based on user input.

Abstract: A method of monitoring performance of a network using network tomography comprises obtaining (102) information indicative of topology of the network and computing (104) a plurality of paths for monitoring the network. Further the method comprises instructing (110) source nodes of the computed paths to send probing packets towards destination nodes of the computed paths, wherein said probing packets undergo segment routing in said network and instructing (114) the destination nodes of the computed paths to carry out network performance measurements based on probing packets received by the destination nodes. Finally the method comprises receiving (116) the performance measurements from the destination nodes and inferring (118) information about performance of nodes in the network using network tomography, wherein the inference process includes correlating the performance measurements of the computed paths.

Abstract: A network device that determines RACH root sequences for AP devices within a given market. The network device can utilize a specialized graph coloring process or algorithm that has been adapted to, e.g., ensure that no two neighboring AP devices share the same RACH root sequences, provided certain additional constraints not found in graph coloring theory are met. For example, AP devices can have multiple RACH root sequence, whereas in traditional graph coloring problems, each vertex typically has only one color.

Abstract: In one embodiment, a method includes launching, by a client system of a first user, a video-call session; receiving, by the client system of the first user, a video stream including video captured at a client system of a second user; and displaying the video stream in a small-overlay-window on a display of the client system of the first user, wherein the small-overlay-window is positioned over an active application.

Abstract: Mechanisms for path continuity determination in an aggregate flow environment. An ingress node and a downstream node for which a path continuity check is desired are determined. The ingress node devolves, from an aggregate flow entry, one or more microflows that comprise packets which are destined for the downstream node. The downstream node is directed to generate corresponding microflows. Each microflow is associated with a continuity set identifier and has one or more timers, such as an idle timer and/or a hard timeout timer. Upon timeout of one of the timers, the ingress node and the downstream node send a microflow termination message that contains the continuity set identifier to a controller node. The controller node determines a path continuity status between the ingress node and the downstream node based on a receipt of one or more microflow termination messages from the ingress node and the downstream node.

Abstract: A social networking system may provide user metrics for unknown dimensions to an external system using received hash codes from user devices performing actions on the external system. Embodiments of the invention receive hash codes generated by external systems that are embedded in redirect Uniform Resource Locators (URLs) that are executed by user devices. The social networking system may match the received hash codes to identifying information about users, e.g., user identifiers. The user profile information may be reported to external systems based on hash codes in an aggregated format without disclosing identifying information about users. In one embodiment, a hash code may include identifying information of an administrator of an external system to enable the administrator to merge information about users of the social networking system with other unknown dimensions of information about the users that is known by the external system.