Abstract: Methods and systems for low earth orbit satellite communications, utilizing fractionated satellites and constellations with large baselines. The latter, combined with spatial multiplexing protocols, provides access to user equipment on the ground with much greater spatial resolution than hitherto possible. Methods include overcoming the problem posed by the round-trip delay of satellite links when adaptive, downlink, beamforming is attempted in Frequency Division Duplex (FDD) systems. Methods include using of uplink and downlink pilot signals which eliminate the need for controlling the physical integrity of the fractionated satellite through an electromechanical servo-control system in space.

Abstract: A base station including an electronic processor configured to: receive a first signal from a primary satellite, the first signal including a plurality of raw signals from a first user equipment camped on a downlink of the primary satellite; receive a second signal from a diversity satellite, the second signal including at least one of the plurality of raw signals from the first user equipment; store, in a signal sample memory, a copy of the first signal and a copy of the second signal; estimate a bipolar delay for the user equipment; synchronize the copy of the first signal and the copy of the second signal by applying the bipolar delay to the copy of the second signal; and combine the synchronized copies of the first and second signals to generate a plurality of synchronized raw signals for the first user equipment.

Abstract: Systems and methods for intelligent packet repetition in mobile satellite service links to overcome channel blockages. One example method includes transmitting and receiving packetized wireless communications between first and second communications devices via a bidirectional wireless link. The method includes receiving, by a first communications device from a second communications device, feedback information including an indication of a blockage in the communication channel, the indication including information indicating the presence and extent of the blockage, wherein the feedback does not include status indications for individual received packets. The method includes, responsive to receiving the indication of a blockage in the communication channel, determining a packet repeat value based on the feedback information, wherein the packet repeat value may be greater than one.

Abstract: In various examples, a virtually animated and interactive agent may be rendered for visual and audible communication with one or more users with an application. For example, a conversational artificial intelligence (AI) assistant may be rendered and displayed for visual communication in addition to audible communication with end-users. As such, the AI assistant may leverage the visual domain—in addition to the audible domain—to more clearly communicate with users, including interacting with a virtual environment in which the AI assistant is rendered. Similarly, the AI assistant may leverage audio, video, and/or text inputs from a user to determine a request, mood, gesture, and/or posture of a user for more accurately responding to and interacting with the user.

Abstract: In various examples, a virtually animated and interactive agent may be rendered for visual and audible communication with one or more users with an application. For example, a conversational artificial intelligence (AI) assistant may be rendered and displayed for visual communication in addition to audible communication with end-users. As such, the AI assistant may leverage the visual domain—in addition to the audible domain—to more clearly communicate with users, including interacting with a virtual environment in which the AI assistant is rendered. Similarly, the AI assistant may leverage audio, video, and/or text inputs from a user to determine a request, mood, gesture, and/or posture of a user for more accurately responding to and interacting with the user.

Abstract: A wireless communication system using a fractionated LEO satellite, wherein a combination of MIMO and geographic beamforming are used for radio access, and wherein the channel coefficient vectors are adaptively extrapolated in time and frequency to reduce the pilot signal density.

Abstract: Methods and systems for low earth orbit satellite communications, utilizing fractionated satellites and constellations with large baselines. The latter, combined with spatial multiplexing protocols, provides access to user equipment on the ground with much greater spatial resolution than hitherto possible. Methods include overcoming the problem posed by the round-trip delay of satellite links when adaptive, downlink, beamforming is attempted in Frequency Division Duplex (FDD) systems. Methods include using of uplink and downlink pilot signals which eliminate the need for controlling the physical integrity of the fractionated satellite through an electromechanical servo-control system in space.

Abstract: Systems and methods operating a spotbeam satellite network. One example embodiment provides a satellite broadcast system. The system includes an electronic processor communicatively coupled to a satellite, and a user equipment. The electronic processor receives a plurality of bearer signals, each bearing identical broadcast or multicast program information. For each of the plurality of bearer signals, the electronic processor generates one of a plurality of spotbeams for transmission by the satellite within a coverage area. The electronic processor introduces into the bearer signal of each spotbeam of the plurality of spotbeams a differential delay with respect to the bearer signals of each of the other spotbeams of the plurality of spotbeams The user equipment is receives the bearer signals from a plurality of adjacent spotbeams of the plurality of spotbeams. The user equipment constructively utilizes the bearer signals received from the plurality of adjacent spotbeams to decode the program information.

Abstract: The present disclosure describes the concept of operations and the medium access control protocols of a wireless communication system using code-division multiple access with interference avoidance (CDMA-IA) as its physical layer. The system can dynamically share a common band with other networks without a central radio resource controller. In one embodiment, the wireless communication system includes a plurality of radio nodes forming a wireless mesh network, wherein the pairs of radio nodes use, individually optimized, time division duplexing. At least one radio node includes a software-defined radio, a memory, and an electronic processor. The electronic processor is configured to control the software-defined radio to transmit a pilot signal and share various state information with the other nodes of the network. The shared information includes local spectrum occupancy and node connectivity sets.

Abstract: The present disclosure includes devices, systems, and methods for autonomously landing unmanned aerial vehicles (UAVs) with collaborative information sharing and without a central coordinating entity. In one embodiment, the present disclosure includes an unmanned aerial vehicle including a communication interface, a memory; and an electronic processor. The communication interface is configured to establish a wireless communication link with one or more unmanned aerial vehicles. The electronic processor configured to autonomously coordinate landings at a landing strip with the one or more unmanned aerial vehicles to prevent collisions exchanging messages with the one or more unmanned aerial vehicles via the wireless communication link according to a collision avoidance protocol, and wherein the autonomous coordination occurs without a central coordination entity.

Abstract: Methods and systems for low earth orbit satellite communications, utilizing fractionated satellites and constellations with large baselines. The latter, combined with spatial multiplexing protocols, provides access to user equipment on the ground with much greater spatial resolution than hitherto possible. Methods include overcoming the problem posed by the round-trip delay of satellite links when adaptive, downlink, beamforming is attempted in Frequency Division Duplex (FDD) systems. Methods include using of uplink and downlink pilot signals which eliminate the need for controlling the physical integrity of the fractionated satellite through an electromechanical servo-control system in space.

Abstract: Systems and methods for adaptive beamforming for a mobile satellite system (MSS). Embodiments described herein provide individual-user-optimized, adaptive beamforming. One example system creates a user beam optimized based either on known user locations or the waveforms received from all cochannel users. The user beam maximizes the signal-to-interference-noise relative to the desired user, both in the forward and return links. The optimization process considers the spatial distribution of all cochannel users in the footprint of the satellite. The user beam adapts to the user's location and co-channel interference environment.

Abstract: Methods and systems for low earth orbit satellite communications, utilizing fractionated satellites and constellations with large baselines. The latter, combined with spatial multiplexing protocols, provides access to user equipment on the ground with much greater spatial resolution than hitherto possible. Methods include overcoming the problem posed by the round-trip delay of satellite links when adaptive, downlink, beamforming is attempted in Frequency Division Duplex (FDD) systems. Methods include using of uplink and downlink pilot signals which eliminate the need for controlling the physical integrity of the fractionated satellite through an electromechanical servo-control system in space.

Abstract: Systems and methods operating a spotbeam satellite network to provide single frequency network broadcast and multicast services. One example embodiment provides a satellite broadcast system. The system includes an electronic processor communicatively coupled to a satellite and a user equipment. The electronic processor is configured to receive a plurality of bearer signals, each bearing identical broadcast program information. The electronic processor is configured to, for each of the plurality of bearer signals, generate one of a plurality of spotbeams for transmission by the satellite within a coverage area. The user equipment is configured to receive the bearer signals from a plurality of adjacent spotbeams of the plurality of spotbeams. The user equipment is configured to constructively utilize the bearer signals received from the plurality of adjacent spotbeams to decode the program information.

Abstract: Methods and systems for low earth orbit satellite communications, utilizing fractionated satellites and constellations with large baselines. The latter, combined with spatial multiplexing protocols, provides access to user equipment on the ground with much greater spatial resolution than hitherto possible. Methods include overcoming the problem posed by the round-trip delay of satellite links when adaptive, downlink, beamforming is attempted in Frequency Division Duplex (FDD) systems. Methods include using of uplink and downlink pilot signals which eliminate the need for controlling the physical integrity of the fractionated satellite through an electromechanical servo-control system in space.

Abstract: The present disclosure describes the concept of operations and the medium access control protocols of a wireless communication system using code-division multiple access with interference avoidance (CDMA-IA) as its physical layer. The system can dynamically share a common band with other networks without a central radio resource controller. In one embodiment, the wireless communication system includes a plurality of radio nodes forming a wireless mesh network, wherein the pairs of radio nodes use, individually optimized, time division duplexing. At least one radio node includes a software-defined radio, a memory, and an electronic processor. The electronic processor is configured to control the software-defined radio to transmit a pilot signal and share various state information with the other nodes of the network. The shared information includes local spectrum occupancy and node connectivity sets.

Abstract: The present disclosure is directed to a method and system for increasing virtual machine (VM) density on a server system through adaptive rendering by dynamically shifting video rendering tasks to a client computing device. In one embodiment, a processor in a server manages virtual machines in the server by controlling a number of VMs and an amount of system resources allocated to the VMs. The number of VMs and the amount of resources allocated to the VMs are controlled by shifting video rendering from at least one of the VMs to a client device, and increasing the number of the VMs in the server after the shifting.

Abstract: The present disclosure includes devices, systems, and methods for autonomously landing unmanned aerial vehicles (UAVs) with collaborative information sharing and without a central coordinating entity. In one embodiment, the present disclosure includes an unmanned aerial vehicle including a communication interface, a memory; and an electronic processor. The communication interface is configured to establish a wireless communication link with one or more unmanned aerial vehicles. The electronic processor configured to autonomously coordinate landings at a landing strip with the one or more unmanned aerial vehicles to prevent collisions exchanging messages with the one or more unmanned aerial vehicles via the wireless communication link according to a collision avoidance protocol, and wherein the autonomous coordination occurs without a central coordination entity.

Abstract: Devices, methods, and systems for uplink synchronization in time division multiple access (TDMA) satellite network. In one embodiment, an earth-based satellite terminal is configured to communicate with a satellite hub through a satellite using the TDMA communication protocol. The earth-based satellite terminal is configured to determine its own location, a location of the satellite, estimate a distance between the location of the terminal and the location of the satellite, determine a Coarse Timing Advance based on the distance that is estimated, and transmit data to the satellite based on the Coarse Timing Advance and the TDMA communication protocol. The Coarse Timing Advance may allow uplink TDMA communication without a preamble transmission on a random access channel, the preamble transmission being required in many conventional systems.

Abstract: The present disclosure describes the concept of operations and the medium access control protocols of a wireless communication system using code-division multiple access with interference avoidance (CDMA-IA) as its physical layer. The system can dynamically share a common band with other networks without a central radio resource controller. In one embodiment, the wireless communication system includes a plurality of radio nodes forming a wireless mesh network, wherein the pairs of radio nodes use, individually optimized, time division duplexing. At least one radio node includes a software-defined radio, a memory, and an electronic processor. The electronic processor is configured to control the software-defined radio to transmit a pilot signal and share various state information with the other nodes of the network. The shared information includes local spectrum occupancy and node connectivity sets.