Abstract: Example implementations disclosed herein can be used to generate composite network policy graphs based on multiple network policy graphs input by network users that may have different goals for the network. The resulting composite network policy graph can be used to program a network so that it meets the requirements necessary to achieve the goals of at least some of the network users. In one example implementation, a method can include receiving multiple network policy graphs, generating composite endpoint groups based on relationships between endpoint groups and policy graph sources, generating composite paths based on the relationships between the endpoints and the network policy graphs, generating a composite network policy graph based on the composite endpoint groups and the composite paths, and analyzing the composite network policy graph to determine conflicts or errors.

Abstract: Described herein are techniques for performing a channel scan based on a mobility state of a device. The mobility state of a device relative to an access point may be determined using time-of-flight information. A channel scan may be performed based on the mobility state determination.

Abstract: Network flow classification can include clustering a network flow database into a number of at least one of applications and network flows. Network flow classification can include classifying the number of the at least one of applications and network flows.

Abstract: In an example, an optimal bit rate to transmit a packet on a communication channel is determined based on channel state information. A channel quality metric is predicted and the optimal bit rate may be modified based on the prediction.

Abstract: Placing virtual machines (VMs) on physical hardware to guarantee bandwidth includes obtaining a Tenant Application Graph (TAG) model, the TAG model representing a network abstraction model based on an application communication structure between VMs of components, determining bandwidths for the components based on the TAG model, and placing the VMs of the components on physical hardware based on the bandwidths for the components.

Abstract: Localizing a location of a mobile device may be performed by obtaining times of flights between the mobile device and an access point at a first and second location. A heading of the mobile device and a distance between the first and second location may be further obtained. The times of flight, heading, and distance may be used to localize the second location.

Abstract: Identifying a component within an application executed in a network includes obtaining a traffic matrix, the traffic matrix defining a rate for which packets of data are exchanged between VMs corresponding to an application, analyzing the traffic matrix to identify VMs within a component, modifying the traffic matrix to create a modified traffic matrix, and defining, for the application, a tenant application graph (TAG) model based on the modified traffic matrix.

Abstract: A wireless access point includes a wireless interface to send or receive frames in a cell in a wireless network. A storage device stores a cell ID that uniquely identifies the wireless access point. Processing circuitry inserts the cell ID in a physical layer header of a frame, and sends the frame to a client device in the cell via the wireless interface.

Abstract: A first distance between a first node and a target node is computed based on a first time-of-flight (ToF) of a communication sequence between the first node and the target node. A second distance between a second node and the target node is computed based on a second ToF of the communication sequence between the first node and the target node, as recorded by the second node. A location of the target node is determined based on the first distance and the second distance.

Abstract: In an example, packets transmitted over a communication channel from a transmitter are received. Channel state information (CSI) from the received packets are obtained and signal-to-noise (SNR) values of the communication channel are computed based on the obtained CSI. In addition, effective bit error rate (BER) values are determined based on the SNR values, a coherence time period within which the effective BER values of the communication channel remain within a predetermined range is determined, a modulation and coding scheme (MCS) to be implemented by the transmitter is determined based on the effective BER values within the coherence time period, and the determined MCS is transmitted to the transmitter.

Abstract: The present disclosure is generally related to a method for wireless software-defined networking. The method includes establishing a wireless link between an access point of a network and a plurality of client devices. The method includes generating a time schedule. The time schedule allocates a time window to each of the plurality of client devices. Each time window defines when a plurality of client devices is allowed to communicate within the network via the access point.

Abstract: A first set of subcarriers having signal-to-noise ratio (SNR) values that exceed a target SNR value is identified at a transmitter. A second set of subcarriers having SNR values below the target SNR value is identified. Power is iteratively reallocated from the first and second set of subcarriers to a third set of subcarriers having SNR values below the target value but closer to the target SNR value than the second set of subcarriers.

Abstract: In one implementation, an application-aware network control system determines that a network flow has been instantiated, derives network flow features associated with the network flow in response to determining the network flow has been instantiated, and provides the network flow features to an application identification module. In response to an application identification signal, the application-aware network control system ceases deriving the network flow features, and applies a flow action to the network flow based on an application identification report received from the application identification module.

Abstract: A set of antennas is selected from a plurality of antennas for transmitting data streams on a plurality of subcarriers based on channel state information of a communications channel between the plurality of antennas and a plurality of receive antennas at a client device, a number of the data streams to be transmitted, and a channel coherence time of the communications channel. A size of the set is equal to or greater than the number of data streams.

Abstract: An example method for allocating resources in accordance with aspects of the present disclosure includes collecting proposals from a plurality of modules, the proposals assigning the resources to the plurality of modules and resulting in topology changes in a computer network environment, identifying a set of proposals in the proposals, the set of proposals complying with policies associated with the plurality of modules, instructing the plurality of modules to evaluate the set of proposals, selecting a proposal from the set of proposals, and instructing at least one module associated with the selected proposal to instantiate the selected proposal.

Abstract: According to an example, a target channel in a set of channels for a wireless communication may be identified through use of a model. Particularly, performance information of the channels in the set of channels may be accessed over a plurality of time intervals. In addition, an identification of which of the channels in the set of channels has a highest performance level for each of the plurality of time intervals may be made and a model correlating the performance information of the plurality of channels and the channel having the highest performance level over the plurality of time intervals may be developed.

Abstract: A wireless network device includes operating system layer buffers used by an operating system and driver layer buffers used by a wireless network interface driver in the device. Memory stores a capacity bitmap managed by the wireless network interface driver. The capacity bitmap identifies a current capacity of each of the driver layer buffers and the capacity bitmap may be provided to the operating system.

Abstract: A wireless network with coordinated sectors to mitigate interference. An example of the network includes a plurality of antennas each having a directional gain pattern, at least one antenna located at a first access point and at least one antenna located at a second access point spaced apart from the first access point, at least one antenna at the first access point oriented with maximum gain in a first direction that defines as first sector and at least one antenna at the second access point oriented with maximum gain in a second direction that defines a second sector, and at least one transceiver coupled to the antennas In sequence any antennas oriented in the first sector separately from any antennas oriented in the second sector.

Abstract: Provided is a method of adaptive beamforming, which includes calculating a correlation matrix, a first weight vector function and a noise level of received channel data, converting the correlation matrix of the channel data into a first base matrix, generating a second base matrix by selecting a base value not smaller than the calculated noise level from base values of the first base matrix, calculating a second weight vector function from the first weight vector function by using the second base matrix, and performing beam focusing by using the second weight vector function. Therefore, an image with high resolution may be obtained just with received beam focusing.

Abstract: According to an example, a receiver having a physical (PHY) layer may receive a portion of a frame from a transmitter, in which the portion of the frame comprises information available at the PHY layer. A signature of the transmitter may be determined based upon the information available at the PHY layer and a hardware component in the PHY layer may determine whether to continue to receive the frame based upon the determined signature of the transmitter.