Systems and methods are provided for automatically re-ranging a satellite terminal. A satellite system may comprise a satellite comprising an inroute channel and an outroute channel, and a terminal configured to receive an outroute signal from the satellite on the outroute channel and transmit an inroute signal to the satellite on the inroute channel. The satellite terminal may automatically determine when to perform ranging by monitoring the quality of the outroute signal; monitoring the quality of the inroute signal; and determining if there has been a sustained degradation in the monitored inroute signal quality or the monitored outroute signal quality.

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.

A transmission power management device including: a memory, and a processor coupled to the memory and configured to: acquire a first path loss between a first relay station and a second relay station, the first relay station relaying a first signal, the second relay station relaying a second signal, and adjust a first transmission power of the first signal by the first relay station based on the first path loss.

Low-noise block downconverter (LNB) of a satellite dish receives a request from a satellite broadcast signal receiver to transmit a signal for a channel to the receiver. If the channel requested by the receiver is different from a channel requested by another satellite broadcast signal receiver, the LNB in response provides a signal for the channel requested by the receiver at a frequency that is allocated to the receiver. If the channel requested by the receiver is the same as a channel requested by another satellite broadcast signal receiver, the LNB provides an instruction to the requesting receiver for the receiver to retune to the frequency used for the other satellite broadcast signal receiver. The requesting receiver can then receive the signal for said channel which is being provided by the LNB at the frequency used for the other satellite broadcast signal receiver.

Examples disclosed herein relate to a communication system including a transceiver module, a rearrangeable switch network coupled to the transceiver module, a power distribution network coupled to the rearrangeable switch network, and a plurality of Beam Steering Phase Array (“BSPA”) antennas, each coupled to the power distribution network and dynamically controllable to generate beams according to a power regulation requirement for a set of satellites.

Systems and methods for controlling uplink power in a non-terrestrial network (NTN). An NTN station transmits a reference signal at a first time having a defined transmission power and the reference signal is received by non-terrestrial user equipment. The user equipment evaluates the reference signal and determines a first downlink loss of the reference signal by calculating a difference between a measured power level of the received reference signal and the defined transmission power. The NTN station transmits a communication signal at a second time and is received by the user equipment, which estimates a second downlink loss of the communication signal based on the first downlink loss and a power level of the communication signal. A first uplink loss is estimated based on the second downlink loss, and the user equipment adjusts a transmission power of its transmitter based on the first uplink loss.

Systems and methods for supporting more flexible coverage areas and spatial capacity assignments using satellite communications systems are disclosed. A hub-spoke, bent-pipe satellite communications system includes: terminals; gateways; a controller for specifying data for controlling satellite operations in accordance with a frame definition including timeslots for a frame and defining an allocation of capacity between forward and return traffic. The satellite communications system may employ a satellite with a feed array assembly and may use on-board beamforming or ground-based beamforming. Beam hopping within timeslots of the frame may be used to provide coverage to different cells in different time periods. The flexible coverage areas may be provided using changes in satellite position, antenna patterns, or beam resource allocations.

A method and system for providing high throughput communications via a Radio Frequency (RF) satellite are disclosed. The method includes providing a plurality of information bit streams intended for a plurality of downlinks; modulating an uplink stream including the plurality of information bit streams with an uplink modulation scheme to generate an uplink signal; transmitting the uplink signal to the satellite; and partitioning, at the satellite, the uplink signal into a plurality of downlink signals, each one intended for one of the plurality of downlinks. In the method, the uplink stream includes the plurality of information bit streams.

The present application provides a method and a device for determining sending parameters of a terminal. The method comprises: firstly determining a pre-estimated uplink signal-to-noise ratio of at least one reference position in a cell range corresponding to a satellite beam, determining, according to the pre-estimated uplink signal-to-noise ratio, an EIRP value corresponding to the preset uplink carrier bandwidth of the corresponding reference position, determining, according to the EIRP value corresponding to the preset uplink carrier bandwidth, a maximum rate supported by the preset uplink carrier bandwidth, determining, according to the maximum rate supported by the preset uplink carrier bandwidth, a maximum uplink rate supported by the terminal, and determining uplink sending parameters of the terminal according to an uplink rate which is inputted by the user, is not greater than the maximum uplink rate supported by the terminal and is to be supported by the terminal. The method can quickly and reasonably determine uplink sending parameters of a terminal, so that a control device in a satellite mobile communication system allocates a relevant resource to the terminal according to the obtained uplink sending parameters of the terminal, thereby guaranteeing reasonable use of system resources.

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.