Methods and systems are described for providing end-to-end beamforming. For example, an end-to-end beamforming system include a relay satellite and a ground network to provide communications to user terminals located in user beam coverage areas. The ground network includes geographically distributed access nodes and a central processing system (CPS). Beamformers of the ground network generate forward uplink signals from appropriately weighted combinations of user data streams that, after relay by the satellite, produce forward downlink signals that combine to form forward user beams.

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.

A network controller is configured to cause a network to implement a primary network configuration of a network and a secondary network configuration as a backup to the primary network configuration. The network controller may be configured to receive information from a plurality of nodes of a network and information related to the client data to be transmitted through the network. Based on the node information, the network controller is configured to determine available nodes and possible links in the network and then determine a topology of the network. The primary network configuration is determined based on the topology. The network controller then sends instructions to the plurality of nodes of the network to implement the primary network configuration and to switch to a secondary network configuration where a failure of the primary network configuration occurs, wherein the secondary network configuration implements mobile ad-hoc networking in the determined topology.

In a wireless communication terminal (50) that performs repetition transmission in which predetermined data is repeatedly transmitted, a wireless communication unit (51) receives continuation information which is information on continuation of the repetition transmission before and after handover, and a control unit (55) performs the repetition transmission after the handover based on the continuation information.

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.

Effects of communications blockages can be mitigated. A wireless communication transmitter comprises a processor and a memory. The memory stores instructions executable by the processor to, upon receiving a current data packet in a sequence of data packets, wirelessly transmit a burst to a second computer. The burst includes the current data packet and a previous data packet in the sequence.

A ground station has a power management communication system for use with a satellite having one or more solar cells that generate solar power, an energy storage that collects solar power from the one or more solar cells and provides stored energy, and one or more electronic components. The power management communications system has a learning artificial intelligence algorithm that allocates solar power from the one or more solar cells and stored energy from the energy storage to the one or more electronic components, based on a number of factors including communication needs, adjustable parameters, and performance indicators. The user can indicate the desired communication to be achieved, and the system determines the appropriate operating parameters for the satellite.

Systems and methods for operating a multi-band satellite terminal are disclosed. One aspect disclosed features a method, comprising: controlling a multi-band satellite terminal capable of receiving signals on a plurality of frequency bands to receive a signal transmitted by a satellite on a first frequency band of the plurality of frequency bands; determining link conditions of the first frequency band based on the received signal; generating an estimate of link conditions of a second frequency band of the plurality of frequency bands, wherein the estimate is generated based on the link conditions of the first frequency band; selecting the second frequency band based on the estimate of the link conditions of the second frequency band; and controlling the multi-band satellite ground terminal to receive the signal transmitted by the satellite on the second frequency band.

A method for satellite communications network resiliency comprising, at a satellite service provider computing system: identifying a set of lost links between user terminals of a satellite communications network, wherein the lost links are due to a loss of at least one beam of the satellite communications network; determining a repointing of at least one user terminal to restore at least a portion of the lost links by using one or more optimization algorithms to determine a set of one or more user terminal repointings that maximize a reward based on the set of lost links and a network graph and a beam graph associated with the satellite communications network; and instructing repointing of the at least one user terminal.

The invention refers to a method performed by a wireless device (10), for connecting to a second satellite (20b) in a non-terrestrial network, NTN, wherein the wireless device employs a first beamforming matrix for directing a radio beam from an antenna array of the wireless device to the a first satellite (20a), the method comprising determining an angular difference between the directions towards the first and the second satellite, determining a second beamforming matrix, for communication with the second satellite, based on a direction of the beam towards the first satellite and the determined difference in angles, and using the second beamforming matrix to configure a receiver and/or transmitter for connecting to the second satellite; the invention further refers to corresponding method performed by a network node comprising transmitting to the wireless device ephemeris data of the first and the second satellite order to allow the wireless device determining an angular difference between the directions towards the first and the second satellite; the invention further refers to a corresponding wireless device (10) and to a corresponding network node.