A transition satellite system which includes a legacy satellite system and a new satellite system that incorporates gateway level transition, satellite level transition and carrier level transition. The transition satellite system allows new satellite systems with user terminals, satellites and gateways to be able to coexist with existing legacy systems allowing a gradual phase-out of legacy user terminals and systems.

An improved air interface for satellite systems such as a 5G-based non-geostationary (NGSO) satellite system. The air interface includes an improved physical interface for efficient operation over NGSO satellite systems. The air interface includes an improved forward link for communicating from the satellite gateway to the user terminal and a return link for communicating from the user terminal to the satellite gateway.

A system of architecture, apparatus and calibration method is invented for high-power flexible-polarization payload for satellite communications. The system comprises onboard phase-tracked apparatus, flexible polarization mechanism, and in-orbit calibration method. The power combining and polarization performance of the phase-tracked payload is monitored on ground by measuring the cross-polarization discrimination (XPD) and/or axial ratio (AR). The high performance over the life is achieved by optimization of the XPD or AR on ground and adjusting complex gain of the transponders. The high-power flexible-polarization in-orbit-calibration payload may be applied but not limited to UHF, L, S, C, X, Ku and Ka-band high power satellite systems.

A method for suppressing a parasite signal received with a useful signal by a network of elementary antennas of a payload of a satellite. The suppression method includes an analogue formation step for forming analog beams and a digital formation step for forming a digital beam. The analog formation step includes forming of an useful analog beam in which the parasite signal is attenuated with respect to the useful signal and of an auxiliary analog beam in which the useful signal is attenuated with respect to the parasite signal. The digital formation step includes forming of a digital beam in which the parasite signal has been suppressed, by combining the signals obtained by digitizing the auxiliary beam and the useful beam.

A satellite communication system comprises a satellite configured to provide a plurality of spot beams adapted for communication using time domain beam hopping to switch throughput among spot beams of the plurality of spot beams. The plurality of spot beams includes a first spot beam that illuminates and communicates with a first gateway and a first set of subscriber terminals. The satellite is configured to implement a beam hopping plan that during a hopping period provides throughput to the first spot beam for an aggregated time duration based on bandwidth assignments to the first gateway and the first set of subscriber terminals.

Systems and methods are described for robust scheduling of beam switching patterns in satellite communications systems. Embodiments operate in context of a hub-spoke satellite communications architecture having a number of gateway terminals servicing large numbers of user terminals over a number of spot beams. The satellite includes switching subsystems that distribute capacity to the user beams from multiple of the gateway terminals in a shared manner according to a beam group switching pattern. The beam group switching pattern is robustly formulated to continue distributing capacity during gateway outages (e.g., when one or two gateway terminals are temporarily non-operational due to rain fade, equipment failure, etc.). For example, the beam group switching pattern can be formulated to minimize worst-case degradation of capacity across user beams, to prioritize certain beams or beam groups, etc.

A satellite reception assembly that provides satellite television and/or radio service to a customer premises may comprise a wireless interface via which it can communicate with other satellite reception assemblies. Wireless connections between satellite reception assemblies may be utilized for providing satellite content between different satellite customer premises. Wireless connections between satellite reception assemblies may be utilized for offloading traffic from other network connections.

A satellite communication terminal according to the present invention includes a wired I/F unit to receive monitoring information from a mobile base station, which is a result of monitoring a device state of the mobile base station, a wireless I/F unit to perform radio communication with a satellite, a storage device to store therein monitoring-information processing policy information that indicates conditions for selecting the monitoring information to be transferred to the wireless I/F unit from among the monitoring information, and a monitoring-information processing unit to select the monitoring information to be transferred to the wireless I/F unit from among the monitoring information on a basis of the monitoring-information processing policy information, and to transfer the selected monitoring information to the wireless I/F unit.

A system, apparatus, method, and non-transitory computer readable medium for providing autonomous beam switching for user equipment (UE) within a cell coverage area of a high-altitude platform station (HAPS) network device, the HAPS network device may be caused the HAPS network device to, determine beam layer information corresponding to the plurality of beam layers; transmit the beam layer information to the at least one UE; receive an autonomous beam switch request from the at least one UE in response to the transmitted beam layer information, the request including beam switch parameters; determine a selected beam layer based on the beam switch parameters; and enable communication with the at least one UE using the selected beam layer.

An integrated analog to digital converting and digital to analog converting (ADDA) RF transceiver for satellite applications, configured to replace conventional analog RF down and up conversion circuitry. The ADDA RF transceiver includes one of more ADCs, DSPs, and DACs, all on a single ASIC. Further, the circuitry is to be radiation tolerant for high availability and reliability in the ionizing radiation environment present in the space environment.