Abstract: Systems and methods for integrating multi-orbit and multi-path networks to provide unified wide area network (WAN) connectivity for user devices, based on combining data streams from satellite orbits and cellular networks, are provided. A system includes first wireless network connection equipment with satellite-based multi-path transport protocol, involving indoor and first outdoor device. Additionally, second wireless network connection equipment incorporates non-terrestrial-based and satellite-based multi-path transport protocol, with indoor and second outdoor device. Multi-path radio modem receives data stream, assesses network parameters to determine appropriate data transmission path, dynamically switches between networks, and modifies unified data stream accordingly. Modified data streams are provided as WAN connectivity to user device through indoor device of determined transmission path.

Abstract: A system and method for managing network communication in an asymmetric network environment. The system includes a gateway. The gateway receives a plurality of packets for transmission over first communication network. The plurality of packets are received via primary network path. The gateway dynamically evaluates the plurality of packets. The gateway classifies the plurality of packets into a latency sensitive packet and a latency agnostic packet. The gateway determines network capacity of the primary network path and a secondary network path. The gateway splits the latency sensitive packet and the latency agnostic packet between the primary network path and the secondary network path. The gateway selects the primary network path for transmitting the latency sensitive packet. The gateway selects the secondary network path for transmitting the latency agnostic packet over downstream transmission.

Abstract: Techniques are described for direct conversion and dynamic polarization control in a very small aperture terminal (VSAT) outdoor unit (ODU). The ODU includes a direct up-converter and/or a direct down-converter for converting in a single stage between a baseband frequency and a satellite radiofrequency band (e.g., Ka band). The ODU also includes a polarization amplifier that integrates high-power amplification with circular polarization orientation control. For example, the direct up-converter directly converts a baseband signal to a low-power satellite-RF transmit signal, and the polarization amplifier converts the low-power satellite-RF transmit signal to an uplink signal having high gain and selected circular polarization. The ODU can further include an integrated embedded computer and modem.

Abstract: Techniques are described for precoded rate-splitting with multiple set-wise common messages for aggressive frequency reuse in a multi-beam satellites with co-channel interference. The satellite transmits private streams (PSs) to N user locations via spot beams. Embodiments identify K disjoint sets of the user locations (user groups) as being in adjacent spot beam coverage areas and having high channel vector collinearity. For each user group, data from the corresponding PSs is multiplexed to a respective set-wise common stream (SCS). PS precoders are each computed based on an associated target user location, and SCS precoders are each computed based on an associated target user group. The satellite allocates transmit power and transmits the N PSs and the K SCSs according to the PS beam weight vectors and the SCS beam weight vectors.

Abstract: Various arrangements for performing transmodulation of a forward feeder link are presented. A first data stream and a second data stream can be modulated into a higher-order modulation forward feeder link having a higher-order digital modulation scheme. A satellite can receive the higher-order modulation forward feeder link. The satellite can demodulate the higher-order modulator forward feeder link into a bit stream. This bit stream may then be remodulated and retransmitted as multiple forward user links.

Abstract: Systems and methods for dynamic bandwidth allocation and jitter handling in multi-tiered satellite networks such as virtual communication networks and/or physical communication networks. The system includes bandwidth distributing (BD) unit, in-route group managers (IGMs), in-route bandwidth manager (IBM). The system functions in multi-tier network entity management mode, and multi-beam management mode. The system operates by periodically collecting bandwidth reports from IGMs. The BD unit analyzes data in report and compares aggregated bandwidth demand with pre-defined thresholds. If thresholds are exceeded, system switches to multi-tier network entity management mode. In this mode, BD unit determines individual bandwidth adjustments for virtual network and beams and allocates bandwidth for individual devices within virtual network.

Abstract: A beamforming system for an antenna for satellite communications, where the antenna includes an array of radiating elements, the system including: a processor programmed to implement a set of averaging functions, the processor programmed to receive channel vectors representing responses from a center and other locations in each of a number of cells to be served, the averaging functions to produce an average channel vector for each cell based on an average of the channel vectors received from a corresponding cell; the processor further programmed to calculate a beam weight vector for each cell based on a corresponding average channel vector; and a beamformer to generate a beamforming matrix from the beam weight vectors and to use the beamforming matrix to drive the elements of the antenna to beamform a beam from the antenna.

Abstract: A content protection system for satellite-based content delivery is provided, including a satellite content receiver. The satellite content receiver may include one or more processors and a non-transitory processor readable medium, and be in communication with a satellite antenna. The satellite content receiver may receive a first portion of streaming media content, transmitted by a content security host system using multicast communication. The first portion of the streaming media content may be stored, and later accessed in response to a user command. A second portion of the streaming media content including data missing from the first portion of the streaming media content may be identified. The second portion may be requested from the content security host system and received by the satellite content receiver. The first and second portions of the streaming media content may be combined to reconstruct the streaming media content, which may then be output.

Abstract: Systems and methods for processing bit-interleaved coded modulation (BICM) signals from a BICM transmitter to generate information bit estimates of information in the BICM signals, including a decoder to generate the information bit estimates of the information in the received BICM signals and a symbol a posteriori probability (APP) generator to generate first symbol a posteriori probabilities (APPs) by processing the BICM signals based on Euclidean distances derived from the BICM signals, and further based on symbol probability log-likelihood ratios (SPLLRs) provided to the symbol APP generator by an extrinsic-information-based symbol probability log-likelihood ratio (SPLLR) generator. The SPLLR generator generates the SPLLRs directly from extrinsic information based on updated symbol APPs output from the decoder, without converting the extrinsic information into log-likelihoods (LLs), and the decoder generates the information bit estimates based on the first symbol APPs output from the symbol APP generator.

Abstract: A system and method for traffic shaping of a hybrid network using Internet Protocol (IP) including a first transport and a second transport, the method including: establishing an on-course line to monitor usage of the first transport over a usage cycle, wherein the on-course line defines a usage-limit of the first transport for a given instant within the usage cycle; tracking a current usage of the first transport over the usage cycle; determining a preference between the first transport and the second transport based on a property of a traffic to be transported by the hybrid network; and adjusting the preference to shift the traffic to the second transport as a distance of the current usage from the on-course line decreases for a current instant, wherein the first transport has a lower latency than a latency of the second transport.

Abstract: A beacon receiver including: a Digital Fourier Transform (DFT) module including bins to acquire and to track a beacon signal; an acquisition processor to find acquisition frequency estimates of the beacon signal, to improve the acquisition frequency estimates with a generalized complex interpolator and to linearize the acquisition frequency estimates; and a tracking filter to track the acquired beacon signal and to calculate a tracking frequency estimates; and a synchronization manager to apply a frequency correction, to an oscillator, based on the acquisition frequency estimates or the tracking frequency estimates, wherein the DFT module uses a first bin size for the bins to acquire, a second bin size for the bins to track, and the first bin size is greater than the second bin size.

Abstract: In some implementations, a satellite gateway includes a set of modulators comprising (i) a first modulator to modulate signals for transmission using a first of multiple polarizations, and (ii) a second modulator to modulate signals for transmission using a second of the multiple polarizations. The satellite gateway includes a set of upconverters comprising at least one upconverter for each of the multiple polarizations, wherein each of the upconverters is configured to generate a radiofrequency output by concurrently upconverting multiple intermediate frequency inputs to different frequency ranges. The satellite gateway includes an intermediate frequency distribution network configured to distribute the multiple intermediate frequency output signals from each of the modulators to the inputs of the upconverters. The satellite gateway includes a set of radiofrequency switches that are operable to selectively provide the radiofrequency outputs of the upconverters to antenna feeds for the multiple polarizations.

Abstract: The techniques described herein relate to a method and device for providing a dynamic flow control for latency sensitive Wi-Fi traffic, the method including: Determining a path is congested, wherein the path is shared by local devices to connect to a remote device, wherein the local devices include one or more wireless devices or one or more wired devices; Calculating, for each of the one or more wireless devices, a weight based on a respective link quality and a respective signal strength; and prioritizing traffic, between the local devices and the remote device via the path, by increasing a priority of traffic associated with the local devices based on a link quality less than a quality threshold or a signal strength less than a signal strength threshold.

Abstract: Systems and methods for securing communications between modems are disclosed. The system comprises a modem and an in-line system. The in-line system establishes communication channel with the modem via a communication network. The in-line system receives the legacy signal from the modem upon establishing the communication channel with the modem. The in-line system determines the type of mode of operation associated with the in-line system. The in-line system determines a plurality of configuration parameters associated with the plurality of configurable components of the in-line system. The in-line system configures the plurality of configurable components of the in-line system at real-time with the determined plurality of configuration parameters. The in-line system executes action, in a sequence in each of the configured plurality of configurable components to process the received legacy signal. The in-line system communicates the processed legacy signal to the external device.

Abstract: A beamforming system for an antenna for satellite communications, where the antenna includes an array of radiating elements, the system including: a processor programmed to implement a set of averaging functions, the processor programmed to receive channel vectors representing responses from a center and other locations in each of a number of cells to be served, the averaging functions to produce an average channel vector for each cell based on an average of the channel vectors received from a corresponding cell; the processor further programmed to calculate a beam weight vector for each cell based on a corresponding average channel vector; and a beamformer to generate a beamforming matrix from the beam weight vectors and to use the beamforming matrix to drive the elements of the antenna to beamform a beam from the antenna.

Abstract: Various arrangements of transmit and receive shared-aperture array antenna systems are presented herein. The arrangements can include an antenna that includes: a planar substrate; a first row of a first plurality of transmit patches arranged on the planar substrate; a second row of a plurality of receive patches arranged on the planar substrate; and a third row of a second plurality of transmit patches arranged on the planar substrate. The first row, second row, and third row can be parallel and the second row can be between the first row and the third row.

Abstract: A method for communicating with a legacy terminal supporting a legacy air interface and a new terminal supporting a next generation air interface including: assigning a same carrier to the legacy terminal and the new terminal; receiving a terminal identifier and an optional payload for transmission at a MAC/RLC layer; determining if the terminal identifier is associated with the legacy terminal or the new terminal; composing, based on the determining, a burst header; formatting, a burst including the burst header and the optional payload; and transmitting the burst. In the method, the burst header is set to one of the one or more valid burst headers when the burst is associated with the legacy terminal, and the burst header is set to one of the one or more undefined burst headers when the burst is associated with the new terminal.

Abstract: Systems and methods for bandwidth allocation for Voice over WiFi (VoWiFi) packet traffic in a satellite system is disclosed. The system may include a processor and a memory storing instructions which, when executed by the processor, cause the processor to determine whether there is any VoWiFi packet traffic over a satellite network link (such as, e.g., control and management packet traffic) and, if there is, allocate a guaranteed minimum bandwidth for the VoWiFi packet traffic. The processor may further provide a series of step bandwidth allocations based on the current level of VoWiFi packet traffic exceeding certain threshold values (e.g., as voice data packet traffic).

Abstract: A system and method for managing emergency messaging services is disclosed. The system receives request for transmitting emergency message from user equipment (UE) to geosynchronous equatorial orbit (GEO) satellite. Further, the system determines current location information of the UE. The system determines satellite location of the GEO satellite in proximity to the UE. The system computes a threshold azimuth angle between the UE and the GEO satellite. Further, the system determines an azimuth angle of the UE. Furthermore, the system determines a deviation level between the computed threshold azimuth angle and the determined azimuth angle of the UE. The system further generates an alignment recommendation message for the UE at real-time. Furthermore, the system validates the alignment recommendation message based on signal strength, and signal quality of the UE. Additionally, the system initiates transmission of the emergency message from UE to GEO satellite.

Abstract: A system and method for managing network communication in an asymmetric network environment. The system includes a gateway. The gateway receives a plurality of packets for transmission over first communication network. The plurality of packets are received via primary network path. The gateway dynamically evaluates the plurality of packets. The gateway classifies the plurality of packets into a latency sensitive packet and a latency agnostic packet. The gateway determines network capacity of the primary network path and a secondary network path. The gateway splits the latency sensitive packet and the latency agnostic packet between the primary network path and the secondary network path. The gateway selects the primary network path for transmitting the latency sensitive packet. The gateway selects the secondary network path for transmitting the latency agnostic packet over downstream transmission.