Abstract: In embodiments, a wireless device, such as a Wi-Fi device, transmits communication signals on secondary channels within an operational bandwidth of a wireless network, concurrent with a transmission from another wireless device on a primary channel. The wireless device may detect that a first frequency band within an operating bandwidth of a wireless network is occupied by a first transmission transmitted by a second wireless device, and determine that a second, different frequency band within the operating bandwidth of the wireless network is not occupied. In response, the wireless device may transmit a second transmission occupying the second frequency band concurrent with the first transmission. The wireless device may set a duration of the second transmission based at least in part on a determination of whether the second wireless device is configured to assess the state of all frequency bands within the operating bandwidth before beginning a subsequent transmission.

Abstract: The present invention relates to novel Pseudopolymorphs of Compound A, compositions comprising at least one Pseudopolymorph of Compound A, and methods of using the Pseudopolymorphs of Compound A for preparing compositions useful for treating or preventing HCV infection in a patient, wherein Compound A has the structure.

Abstract: Embodiments of the present invention relate to the communications field, and provide a signal transmission method and apparatus, which can effectively resolve a resource waste problem of user data resource elements and improve system power utilization. The method includes: determining, by a base station, a first parameter value of a user data resource element RE, an initial parameter value of a demodulation reference signal resource element DMRS RE, and a compensation parameter value of the DMRS RE; determining, by the base station according to the initial parameter value and the compensation parameter value, a second parameter value required for transmitting a DMRS; and transmitting, by the base station, the DMRS, the user data, and the compensation parameter value to user equipment, so that the user equipment demodulates the user data.

Abstract: A method for receiving feedback on a quality of multicast transmissions in a Wireless Local Access Network (WLAN) including a source electronic device (e.g., an access point) and a plurality of electronic devices is disclosed, according to some embodiments. The method can include (i) transmitting a plurality of multicast packets addressed to a subset of the plurality of electronic devices by the source electronic device; (ii) concurrently polling the subset of the plurality of electronic devices by the source electronic device; and (iii) receiving a plurality of block acknowledgements (BAs) from at least the subset of the plurality of electronic devices by the source electronic device. Each BA may include information on a quality of reception of two or more multicast packets received at an electronic device.

Abstract: A method for producing ethanol and coproducing methanol on a catalyst in a reactor using a co-feed of a synthesis gas and acetate as a reaction raw material comprising passing a raw material gas containing an acetate and a synthesis gas through a reactor loaded with a catalyst to produce ethanol and coproduce methanol under conditions of a reaction temperature of 150-350° C., a reaction pressure of 0.1-20.0 MPa, a reaction volume hourly space velocity of 100-45000 mlg?1h?1, and an acetate weight hourly space velocity of 0.01-5.0 h?1; and the active components of the catalyst are copper and optionally zinc and/or aluminum, which greatly facilitates the conversion of carbon monoxide to methanol, while an extremely high activity of acetate hydrogenation is maintained.

Abstract: A method in a communication device for processing a received data unit includes determining whether the communication device is an intended receiver based on the received data unit, determining whether the received data unit includes an exclusive use indication, where the exclusive use indication indicates that a plurality of data units are transmitted only to the at least one intended receiver during a time period, where each of the plurality of data units has at least a respective physical layer (PHY) preamble, and determining a time interval during which the communication device need not listen for incoming data units using (i) a result of determining whether the received data unit includes an exclusive use indication and (ii) a result of determining whether the communication device is an intended receiver.

Abstract: A device includes a processor. The processor is configured to determine a hit time for each of a plurality of content items based on at least one of users' history of access to the content items on content distribution clusters in a content distribution network, the users' past ratings of the content items, and social network information associated with the users. The hit time of a content item indicates a number of times that the content item is likely to be accessed by the users. The processor is further configured to compute caching priorities of the content items based on a caching policy of the device and the determined hit times, and initiate a redistribution, over a network, of the plurality of content items over the content distribution clusters of the content distribution network based on the caching priorities.

Abstract: In some embodiments, a first wireless device initializes a first threshold and sends a first frame transmission to a second wireless device. When the first wireless device determines that the first frame transmission was successful, it adjusts the first threshold to a second threshold that is greater than the first threshold. Additionally, when the first wireless device determines that the first frame transmission was not successful, the first wireless device adjusts the first threshold to a third threshold that is less than the first threshold. The thresholds can be associated with any measure, including carrier sensitivity and/or energy detection.

Abstract: In some embodiments, one or more wireless stations operate to configure Neighbor Awareness Networking (NAN)—direct communication with neighboring wireless stations, e.g., without utilizing an intermediate access point. Embodiments relate to scheduling of NAN ranging procedures, including to a first wireless station sending first information, including first scheduling preferences and a first ranging role, to a second wireless station. The first wireless device receives second information, including second scheduling preferences and a second ranging role, from the second wireless device. The first wireless station may initiate the ranging procedure based on the scheduling preferences and ranging parameters. Alternatively, the second wireless station and may initiate the ranging procedure based on the scheduling preferences and ranging parameters.

Abstract: Embodiments include a method, computer program product, and system for grouping electronic devices into contention groups to reduce uplink Orthogonal Frequency-Division Multiple Access (OFDMA) random access (OFDMA-RA) collisions. An access point may explicitly assign an electronic device to a contention group, or the electronic device may implicitly determine an assignment to the contention group. To explicitly assign a device to a contention group, the access point may randomly assign or assign based on a criteria of the electronic device. Examples of criteria include an association identifier (AID), a traffic type/quality of service (QoS) category, a power saving preference, and an association status. The electronic device may implicitly determine a contention group assignment based on the total number of contention groups.

Abstract: A computer system for decoding a signal of decodable indicia is disclosed. The computer system includes a laser scanner configured that outputs a signal of decodable indicia and a microprocessor that include a camera sensor interface that is configured to receive the signal from the laser scanner.

Abstract: A method for manufacturing a rotary article comprises: providing a cold metal transfer welding apparatus comprising a welding torch; providing a rotary substrate; providing a digital representation of the rotary article having at least one internal flow passage; defining a welding path on the rotary substrate based on the digital representation; rotating the rotary substrate while depositing a filler metal layer by layer on the welding path of the rotary substrate to form the rotary article; and separating the rotary substrate from the rotary article.

Abstract: A continuous-time linear equalizer for use in a receiving unit of a high-speed data transmission system for receiving an input signal includes a signal line configured to provide an equalized output voltage, and an active peaking control unit, including a predetermined first number of active peaking transistors each coupled between the signal line and a power supply rail; a peaking resistor that couples gate terminals of each of the active peaking transistors to the signal line; and a first number of first setting switches each associated with each of the first number of active peaking transistors to activate a predetermined number of the first number of transistors according to first setting signals.

Abstract: A reconfigurable neural network circuit is provided. The reconfigurable neural network circuit comprises an electronic synapse array including multiple synapses interconnecting a plurality of digital electronic neurons. Each neuron comprises an integrator that integrates input spikes and generates a signal when the integrated inputs exceed a threshold. The circuit further comprises a control module for reconfiguring the synapse array. The control module comprises a global final state machine that controls timing for operation of the circuit, and a priority encoder that allows spiking neurons to sequentially access the synapse array.

Abstract: Systems and techniques relating to wireless communications are described. A described technique includes determining a primary access category for a transmission opportunity (TXOP) to transmit data to a primary wireless communication device based on a first back-off timer associated with the primary access category; determining a secondary access category for the TXOP to transmit data to a secondary wireless communication device; and transmitting, during the TXOP, spatially steered streams that concurrently provide separate data to respective devices comprising the primary and the secondary device.

Abstract: A radar system uses multiple-beam maximum likelihood estimation (MLE) during both search and tracking operations. During search, a four beam sequential beam, cluster may be used to search for targets in a region-of-interest. During tracking, a three beam triad may be used to track one or more detected targets. In some embodiments, a beam selector switch may be used to allow two offset receive beams to time share a beamformer output port to generate the four beam sequential cluster.

Abstract: The disclosed embodiments provide a system that provides wireless service groups. During operation, a wireless device's advertising mechanism advertises a service group over Wi-Fi, wherein the service group comprises at least the wireless device and wherein the service group's security requirements regulate multicast protection within the service group. In response to receiving a request from a second device to be admitted into the service group, the wireless device's security mechanism admits the second device into the service group and sends the service group's security requirements to the second device, thereby enabling the second device to initialize multicast protection in accordance with the service group's security requirements.

Abstract: A Network device including a security module to establish, in response to the network device being capable of operating in multiple frequency bands, and in response to the network device operating in a first frequency band, security for the frequency band and a second frequency band by performing a single authentication in the first frequency band prior to the network device switching operation form the first frequency band to the second frequency band. A session transfer module to transfer, subsequent to the network device switching operation from the first frequency band to the second frequency band, a communication session of the network device from the first frequency band to the second frequency band. The communication session resumes in the second frequency band using the security established for the second frequency band during the operation of the network device in the first frequency band.

Abstract: A wireless network interface device receives a packet, wherein the packet includes (i) a set of one or more flag bits, and (ii) a medium access control (MAC) header, and the MAC header contains at least (i) a first address field specifying a receiver address, and (ii) a second address field specifying a transmitter address. The wireless network interface device processes the packet to determine whether the packet is a multicast packet. When it is determined that the packet is a multicast packet, the wireless network interface device processes a third address field in the MAC header to determine a MAC multicast address for the packet.

Abstract: In a method implemented in a communication device configured to transmit PHY data units via a communication channel, first data and second data is received. The first data is modulated according to a first constellation having a first number of constellation points, and the second data is modulated according to a second constellation having a second number of constellation points higher than the first number of constellation points. The first data and the second data is parsed to a plurality of spatial streams such that a first subset of the spatial streams includes at least some of the modulated first data but none of the modulated second data, and a second subset of the spatial streams includes at least some of the modulated second data but none of the modulated first data. A single PHY data unit that includes the plurality of spatial streams is generated.