Abstract: Embodiments seek to protect privacy of potentially sensitive client resources in web transactions using crowd-disambiguation. Crowd-disambiguation machines can aggregate information about resources from multiple clients as resource fingerprints, and can use the fingerprints to provide crowd-sourced services in a privacy-protected manner. For example, embodiments can communicate a resource fingerprint as a fully ambiguated resource instance (FARI) and a partially disambiguated resource instance (PDRI). When one (or few) clients communicates the resource fingerprint, the identity of the resource remains obfuscated from the crowd-disambiguation machine. As more clients communicate fingerprints for the same resource (e.g., identified by the matching FARIs), respective, differently generated PDRIs of those fingerprints enable the crowd-disambiguation machine to resolve further portions of the resource, ultimately permitting the resource to be revealed and considered non-private (e.g.

Abstract: Described herein are systems and methods that dynamically manage network traffic for individual subscribers based on past and current data usage rates. The disclosed systems and methods operate to control data traffic for a group of subscribers that share a common access network or that share a common access link to an access network. Prior to an individual subscriber reaching their data plan limit, the disclosed systems and methods track individual subscribers' past and current data rates and manage individual subscribers' current usage rates so that each subscriber's continually or periodically updating past usage rate stays within a provisioning rate for the group. This can improve user experience because rather than waiting until a subscriber has reached their plan data limit to impose strict data usage restrictions, the disclosed systems and methods use modest restrictions continuously or intermittently during the plan period.

Abstract: Methods of antenna pointing and antenna assemblies implementing those methods are disclosed. An example method includes providing a user terminal antenna assembly including an antenna and an auto-peak device. The antenna includes a reflector, a subreflector, and a feed, the feed oriented relative to the reflector and the subreflector to produce a beam. The antenna further includes a tilt assembly to tilt the subreflector relative to the reflector and the feed. The method further includes providing a control signal to tilt the subreflector in a plurality of tilt positions to move the beam while measuring corresponding signal strength of a signal communicated via the antenna at each of the plurality of tilt positions. Additionally, the method includes selecting a tilt position from the plurality of tilt positions based on a measured signal strength, and providing the control signal to tilt the subreflector to the selected tilt position.

Abstract: An AMC antenna apparatus includes a ground plane and a flexible antenna element layer above the ground plane. The ground plane includes a conductive base surface, a plurality of flexible conductors, and a frequency selective surface (FSS) layer above the base surface, where the FSS layer includes a plurality of conductive patches separated from one another. Each of the flexible conductors electrically connects one of the conductive patches to the base surface. A latch mechanism is arranged between the base layer and the FSS layer. An inflatable bladder system between the base layer and the FSS layer is configured to receive a gas input during deployment of the antenna apparatus and inflate to produce force sufficient to cause the latch mechanism to transition from an unlatched state to a latched state in which the conductive base surface is fixedly separated from the FSS layer at a predetermined distance.

Abstract: A reflector antenna heating system (212) includes a dielectric radome (250) that covers a first side of a reflector (216) and a feed subsystem (218) of an antenna (200). The system also includes a plurality of heater blower devices (254) on a second side of the reflector (216), each of the plurality of heater blower devices (254) having an inlet port (259) and an outlet port (260). The system further includes a plurality of outlet duct assemblies (256), wherein each of the plurality of outlet duct assemblies (256) is coupled to the outlet port (260) of a respective heater blower device (254) to direct heated air around a perimeter of the reflector (216) and along an inside surface of the dielectric radome (250). One or more gaps (267) proximal to a center of the reflector (216) are included to recirculate cooled air toward a plurality of inlet ducts (262) for the plurality of heater blower devices (254) to feed the inlet port (259) of each heater blower device.

Abstract: In anticipation of a client device establishing a connection over a network with a remote host service, a pre-connect module generates a connection request (referred to herein as a “pre-connect request”) on behalf of the client device and sends the pre-connect request to the remote host server. The remote server responds with a connection response (referred to herein as a “pre-connect response”), which is pre-positioned on the client-side of the network along with information for generating a later connection request that is in material respects the same as the pre-connect request. Then, when the client device later seeks to establish a connection with the remote host server, the client device determines whether it has in local storage generation information for generating a connection request to the remote host server. If so, the client device uses the generation information to generate a connection request that is in material respects the same as the pre-connect request.

Abstract: Systems and methods for mobile connectivity provisioning at an access network are described. The access network has a service connection to a service center that is external to the access network. The method includes receiving, from a mobile vehicle, an indication of a connection request for a device on the mobile vehicle. The connection request identifies the device using a media access control (MAC) address. The method includes generating a globally unique identifier (GUID) associated with the MAC address and transmitting a first message comprising the GUID to a network access terminal on the vehicle. The network access terminal redirects the connection request to the service center via a traffic connection. The redirected connection request includes the GUID. The access network receives an indication of a network service for the device from the service center; the indication identifies the device based on the GUID.

Abstract: A satellite communication system in which a plurality of satellites each transit about the Earth in a common mid-Earth orbit. The orbit may be configured such that each satellite of the plurality of satellites follows a common, repeating ground track relative to the surface of the Earth. In turn, one or more repeating sky tracks may be defined relative to at least one ground station such that the ground station is in continuous communication with at least one of the plurality of satellites. In an example, a ground station may have visibility to a plurality of repeating sky tracks such that a plurality of discreet communication channels is provided that use different satellites for communication with user terminals of the satellite communications system.

Abstract: Methods and devices for radio frequency (RF) loopback for transceivers are described. A transceiver for communicating RF signals with a target device may transmit signals at a transmit frequency and receive signals at a (different) receive frequency. The transceiver may include a waveguide diplexer for separating and combining signals based on frequency. The transceiver may be configured to couple a loopback signal from a common port of the waveguide diplexer; the loopback signal may be based on a transmit signal. The transceiver may include a loopback translator to translate the loopback signal from the transmit frequency to the receive frequency and provide the translated loopback signal to a receiver used for receiving signals from the target device. The receiver may compare the translated loopback signal with a representation of the transmit signal to generate a compensation signal. A transmitter may use the compensation signal to adjust subsequent transmit signals.

Abstract: Methods and systems for calibrating the return and forward links of a satellite communication system are provided according to embodiments of the invention. The phase and/or amplitude variations caused by the return and forward links are calculated and/or estimated to aid in beamforming, such as ground-based beamforming. Calibration earth stations, distributed within one or more beam patterns, may be used to transmit calibration codes to the gateway to calibrate the return link. Return links variations may be estimated using a weighted minimum mean square algorithm at the gateway. Forward links may be calibrated with calibration codes transmitted from the gateway through a hybrid matrix to at least one calibration station. Forward calibration links may also calibrate for temperature-dependent signal variations such as diplexer variations at the satellite.

Abstract: Disclosed are systems and methods for steering network traffic over different access networks based on a classification of the network traffic. A first access network provides a first network path between a client device and a destination network and a second access network provides a second network path between the client device and the destination network. The access networks have different characteristics, such as latency or available bandwidth. A traffic classifier receives network messages and assigns classifications to the received network messages. A policy enforcer determines routes for individual network messages. The determined route is based at least in part on the classification assigned by the traffic classifier.

Abstract: Methods and systems are described for providing end-to-end beamforming. For example, end-to-end beamforming systems include end-to-end relays and ground networks to provide communications to user terminals located in user beam coverage areas. The ground segment can include geographically distributed access nodes and a central processing system. Return uplink signals, transmitted from the user terminals, have multipath induced by a plurality of receive/transmit signal paths in the end to end relay and are relayed to the ground network. The ground network, using beamformers, recovers user data streams transmitted by the user terminals from return downlink signals. The ground network, using beamformers generates forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the end-end-end relay, produce forward downlink signals that combine to form user beams.

Abstract: The phased array antenna system is described. The phased array antenna system formed on one or more layers of a printed circuit board (PCB). The phased array antenna system be may include a beam forming network to convert between one or more element signals and a beam signal. The phased array antenna system may include one or more control circuits, where each control circuit may receive the element signals for corresponding antenna element. Each of the control circuits may further may establish a control signal path and an element signal path between the antenna elements and the beamforming network, where the signal path may carry multiplexed element and control signals. The control circuits may include a signal adjustment circuit that may adjust the corresponding element signal (e.g., in phase or amplitude) based on the control signal.

Abstract: Methods, systems, and devices for channelizing and beamforming a wideband waveform are described. Generally, the described techniques provide for transmitting and receiving wideband waveforms that are beamformed on a per-channel basis during generation of the wideband waveforms. A transmitter may separate a first wideband signal into segments, with each segment bandwidth corresponding to a channel of the system bandwidth, and may map the segments to channels. The segments may be replicated to generate multiple copies of each segment. The transmitter may beamform and combine the copies of the segments to generate multiple wideband waveforms, and transmit each wideband waveform using a different antenna. A receiver may receive multiple wideband waveforms using multiple antennas and may separate each wideband waveform into segments, then beamform and de-map the segments. The techniques may be used to transmit and receive beamformed wideband waveforms over tactical data links.

Abstract: A data transmission system for a mobile platform comprises non-volatile data storage media, a network interface, and control circuitry. The control circuitry is configured to establish a first connection with one or more onboard passenger service devices providing a passenger service at the mobile platform using the network interface. The control circuitry is further configured to receive a set of system log data from the one or more onboard passenger service devices via the network interface and store one or more log signatures in the non-volatile data storage media. The control circuitry is further configured to detect faults fault related to onboard passenger service devices, store transmission rule data that includes rules for filtering system log data, filter the set of system log data based on the transmission rule data, and transmit a subset of system log data to the remote computing device via the network interface.

Abstract: Methods and systems are described for providing satellite beam handover based on predicted network conditions. In embodiments, a satellite communications system retrieves flight plan data for a plurality of aircraft being provided a network access service, identifies, for each aircraft respective candidate satellite beams of the plurality of satellite beams for providing the network access service, each candidate satellite beam having an associated service timeframe for providing the network access service, obtains, for each of the respective candidate satellite beams, a beam utilization score indicative of predicted beam utilization by the plurality of aircraft over the associated service timeframe, selects satellite beams for providing the network access service of each aircraft of the plurality of aircraft based at least in part on the beam utilization scores, and schedules handover of the network access service for the plurality of aircraft to the selected satellite beams.

Abstract: Approaches are described for release-time-driven (RTD) prioritization of on-board content scheduling and delivery to in-transit transport craft via communications systems. In context of a constrained network, content is scheduled to be delivered to those in-transit on-board media servers in a manner driven by respective release times and other prioritization factors associated with the updated content. Each content is associated with a RTD priority profile that can define a release time, a release priority, and a profile plot for the content. The RTD priority profiles can be used to compute priority surfaces that define priority scores over a multidimensional space for a particular time. A subset of the content can be selected for delivery based on the priority surfaces, and can be scheduled for delivery according to network capacity determinations.

Abstract: Methods, systems, and devices for providing in-flight communication sessions. In some examples, a communication session delivery system may provide network access service or other types of content once a passenger has completed a brand interaction. The brand interaction may be any number of options that a brand partner may require in exchange for access to content. The communication session delivery system may choose from a plurality of reward offers and then display the chosen offers to a passenger. The chosen offers may be selected based on profile information of a passenger and characteristics targeted by a brand partner. The passenger may then choose an offer and perform the required brand interaction. Once the brand interaction has been verified, the passenger may receive the reward associated with the offer.

Abstract: One example includes a self-synchronizing TDD antenna system. The system includes an antenna system to communicate transmit and receive signals and an antenna control circuit coupled to a user communication system. The antenna control circuit includes a transmission line measurement circuit to determine signal loss through a transmission line cable coupled to the antenna system and an amplitude adjustment circuit to adjust amplitude of the transmit and/or receive signals based on the signal loss. A transmit detection circuit monitors signal power of the transmit signal, and a controller switches the amplitude adjustment circuit from a receive mode to a transmit mode in response to the monitored signal power exceeding a predetermined threshold. In the receive mode, the adjustment circuit applies a receive amplitude adjustment to the receive signal, and in the transmit mode the adjustment circuit applies a transmit amplitude adjustment to the transmit signal.

Abstract: Accelerating hint information in web page transactions is described. A root request is observed as part of a web page transaction and hint information is retrieved responsive to observing the root request. The hint information includes child object identifiers associated with the root object for the client system to prefetch prior to loading the root object. Prior to observing a response to the root request, the hint information is provided to the client system.