Abstract: An embodiment provides a method for synchronizing a plurality of super frames to a beam switching time plan defining a plurality of dwell times, the beam switching time plan scheduling a switching between at least two beams which are transmitted using a high-altitude platform or a satellite, wherein each beam covers a respective service area so as to forward a respective data frame to the respective service area via the respective beam; wherein each super frame comprises a data frame to be forwarded by the satellite to the respective service area.

Abstract: System including a gateway, a non-terrestrial node, a terrestrial node and at least a user equipment and a HARQ controller, the gateway being configured to forward a data packet, the data packet to be transmitted to the user equipment, to the non-terrestrial node, the non-terrestrial node being configured to forward the received data packet to the user equipment using a signal, the user equipment being configured to analyze the received data packet regarding a transmission error and/or to analyze the signal from the non-terrestrial node regarding a signal quality and to generate a negative acknowledgment command or an acknowledgement command dependent on the transmission error or to generate another signal indicating the reception signal quality dependent on the reception signal quality, the user equipment being configured to transmit the acknowledgement command and the non-acknowledgement command or the other signal to the terrestrial node communicating with the non-terrestrial node.

Abstract: A wireless communication system has at least one user-side-device and a base-station. The at least one user-side-device and the base-station are configured to communicate with each other via a satellite applying a timing-advance-value (TA) for synchronizing an uplink of the communication. The base-station is configured to provide the at least one user-side-device with a satellite-connecting-signal concerning an uplink towards the satellite, the satellite-connecting-signal providing configuration information in order to establish and adjust the uplink to the satellite. The at least one user-side-device is configured to perform an adjustment of the timing-advance-value for a pre-compensation of at least one synchronization offset of an uplink in case the at least one user-side-device receives the satellite-connecting-signal, the satellite-connecting-signal including a granting-signal indicating the user-side-device the allowance to adjust the timing-advance-value.

Abstract: A control unit is configured to control a communication between a satellite and a plurality of terminals, wherein the control unit is configured for controlling the communication such that communication is scheduled to a terminal, the communication being one of at least a set-wise first type for a set of terminals and/or a second type. The control unit is configured for determining a joint communication quality for a set of terminals from the plurality of terminals using a joint communication information of the set of terminals. The control unit is configured for determining that the joint communication quality is below a quality threshold value, determining a liable terminal from the set of terminals, the liable terminal being liable for the joint communication quality being below the quality threshold value, and controlling the communication such that communication of the second type is scheduled to the liable terminal.

Abstract: A gateway is configured to communicate with a satellite so as to control the preceding/pre-equalization of a communication between the satellite and at least one terminal based on a channel state of a channel between the terminal and the satellite. The gateway is configured for receiving a location-related information indicating a location of the terminal and for determining a predicted channel state information related to the channel state between the terminal and the satellite using the location-related information. The gateway is configured for controlling the signal processing so as to precode the communication according to the predicted channel state information.

Abstract: An embodiment provides a method for synchronizing a plurality of super frames to a beam switching time plan defining a plurality of dwell times, the beam switching time plan scheduling a switching between at least two beams which are transmitted using a high-altitude platform or a satellite, wherein each beam covers a respective service area so as to forward a respective data frame to the respective service area via the respective beam; wherein each super frame comprises a data frame to be forwarded by the satellite to the respective service area.

Abstract: Receivers, controller units for receivers and related methods are provided. One receiver includes an adjustable sample provider providing samples of an input signal using an adjustable sample timing and a feedback path providing a feedback signal to the adjustable sample provider based on a timing error. The feedback path includes a loop filter providing sample timing information to the adjustable sample provider and a replacement value provider providing a replacement sample timing information replacing the sample timing information when an input signal does not fulfil a predetermined requirement for a feedback-based sample timing adaptation. The replacement value provider provides the replacement sample timing information considering a timing error information over a longer time period when compared to a time period considered by the loop filter for a provision of the sample timing information.

Abstract: There are provided examples of receivers, controller units and related methods, wherein one receiver includes: an adjustable sample provider configured to provide samples of an input signal using an adjustable sample timing; a feedback path configured to provide a feedback signal to the adjustable sample provider on the basis of a timing error, wherein the feedback path includes a loop filter configured to provide sample timing information to the adjustable sample provider; and a replacement value provider configured to provide a replacement sample timing information replacing the sample timing information provided by the feedback path when an input signal does not fulfil a predetermined requirement for a feedback-based sample timing adaptation, wherein the replacement value provider is configured to provide the replacement sample timing information considering a timing error information, or a quantity derived from the timing error information, over a longer time period when compared to a time period consider

Abstract: A transceiver of a user equipment includes a receiving stage, a frontend channel estimator, a frontend channel equalizer, a backend channel estimator, and a backend channel equalizer. The receiving stage is configured to receive an inbound signal from a SUDAC, which enables a relay communication including a frontend communication using extremely-high frequencies and a backend communication using ultra-high frequencies. The inbound signal includes a data portion, a backend control portion and a frontend control portion, the frontend control portion including a frontend evaluation signal and a configuration signal.

Abstract: There are provided examples of receivers, controller units and related methods, wherein one receiver includes: an adjustable sample provider configured to provide samples of an input signal using an adjustable sample timing; a feedback path configured to provide a feedback signal to the adjustable sample provider on the basis of a timing error, wherein the feedback path includes a loop filter configured to provide sample timing information to the adjustable sample provider; and a replacement value provider configured to provide a replacement sample timing information replacing the sample timing information provided by the feedback path when an input signal does not fulfil a predetermined requirement for a feedback-based sample timing adaptation, wherein the replacement value provider is configured to provide the replacement sample timing information considering a timing error information, or a quantity derived from the timing error information, over a longer time period when compared to a time period consider

Abstract: System including a gateway, a non-terrestrial node, a terrestrial node and at least a user equipment and a HARQ controller, the gateway being configured to forward a data packet, the data packet to be transmitted to the user equipment, to the non-terrestrial node, the non-terrestrial node being configured to forward the received data packet to the user equipment using a signal, the user equipment being configured to analyze the received data packet regarding a transmission error and/or to analyze the signal from the non-terrestrial node regarding a signal quality and to generate a negative acknowledgment command or an acknowledgement command dependent on the transmission error or to generate another signal indicating the reception signal quality dependent on the reception signal quality, the user equipment being configured to transmit the acknowledgement command and the non-acknowledgement command or the other signal to the terrestrial node communicating with the non-terrestrial node.

Abstract: There are provided examples of receivers, controller units and related methods, wherein one receiver includes: an adjustable sample provider configured to provide samples of an input signal using an adjustable sample timing; a feedback path configured to provide a feedback signal to the adjustable sample provider on the basis of a timing error, wherein the feedback path includes a loop filter configured to provide sample timing information to the adjustable sample provider; and a replacement value provider configured to provide a replacement sample timing information replacing the sample timing information provided by the feedback path when an input signal does not fulfil a predetermined requirement for a feedback-based sample timing adaptation, wherein the replacement value provider is configured to provide the replacement sample timing information considering a timing error information, or a quantity derived from the timing error information, over a longer time period when compared to a time period consider

Abstract: A wireless communication system has at least one user-side-device and a base-station. The at least one user-side-device and the base-station are configured to communicate with each other via a satellite applying a timing-advance-value (TA) for synchronizing an uplink of the communication. The base-station is configured to provide the at least one user-side-device with a satellite-connecting-signal concerning an uplink towards the satellite, the satellite-connecting-signal providing configuration information in order to establish and adjust the uplink to the satellite. The at least one user-side-device is configured to perform an adjustment of the timing-advance-value for a pre-compensation of at least one synchronization offset of an uplink in case the at least one user-side-device receives the satellite-connecting-signal, the satellite-connecting-signal including a granting-signal indicating the user-side-device the allowance to adjust the timing-advance-value.

Abstract: A transceiver of a user equipment includes a receiving stage, a frontend channel estimator, a frontend channel equalizer, a backend channel estimator, and a backend channel equalizer. The receiving stage is configured to receive an inbound signal from a SUDAC, which enables a relay communication including a frontend communication using extremely-high frequencies and a backend communication using ultra-high frequencies. The inbound signal includes a data portion, a backend control portion and a frontend control portion, the frontend control portion including a frontend evaluation signal and a configuration signal.

Abstract: A transceiver of a user equipment includes a receiving stage, a frontend channel estimator, a frontend channel equalizer, a backend channel estimator, and a backend channel equalizer. The receiving stage is configured to receive an inbound signal from a SUDAC, which enables a relay communication including a frontend communication using extremely-high frequencies and a backend communication using ultra-high frequencies. The inbound signal includes a data portion, a backend control portion and a frontend control portion, the frontend control portion including a frontend evaluation signal and a configuration signal.

Abstract: A transceiver of a user equipment includes a receiving stage, a frontend channel estimator, a frontend channel equalizer, a backend channel estimator, and a backend channel equalizer. The receiving stage is configured to receive an inbound signal from a SUDAC, which enables a relay communication including a frontend communication using extremely-high frequencies and a backend communication using ultra-high frequencies. The inbound signal includes a data portion, a backend control portion and a frontend control portion, the frontend control portion including a frontend evaluation signal and a configuration signal.

Abstract: A transceiver of a user equipment includes a receiving stage, a frontend channel estimator, a frontend channel equalizer, a backend channel estimator, and a backend channel equalizer. The receiving stage is configured to receive an inbound signal from a SUDAC, which enables a relay communication including a frontend communication using extremely-high frequencies and a backend communication using ultra-high frequencies. The inbound signal includes a data portion, a backend control portion and a frontend control portion, the frontend control portion including a frontend evaluation signal and a configuration signal.

Abstract: A SUDAC includes a first and a second wireless communication interface and a processor. The first wireless communication interface is configured for using ultra-high frequency in order to establish at least one backend communication link with a base station. The second wireless communication interface is configured for using extremely-high frequency in order to establish at least one frontend communication link with a user equipment. The processor is configured for at least partially forwarding a user information signal received via the frontend communication link to be transmitted via the backend communication link while frequency converting the extremely-high frequency to the ultra-high frequency vice versa. The processor is further configured for extracting control information from the user information signal and for controlling forward parameters of the first or the second wireless communication interface based on the control information.

Abstract: A SUDAC includes a first and a second wireless communication interface and a processor. The first wireless communication interface is configured for using ultra-high frequency in order to establish at least one backend communication link with a base station. The second wireless communication interface is configured for using extremely-high frequency in order to establish at least one frontend communication link with a user equipment. The processor is configured for at least partially forwarding a user information signal received via the frontend communication link to be transmitted via the backend communication link while frequency converting the extremely-high frequency to the ultra-high frequency vice versa. The processor is further configured for extracting control information from the user information signal and for controlling forward parameters of the first or the second wireless communication interface based on the control information.

Abstract: A dam (1) for shielding against water, said dam comprising at least one elongate section (10), each section comprising a section bottom (2), a section top (3) and two longitudinal side faces (4) and two end faces (5) together defining a volume (6), said at least one section (10) comprising one or more openings (11, 12) configured for filling and emptying of liquid to the volume (6), said at least one end face (5) comprising a collar (7) extending in the width along the periphery of the end face in extension of the bottom section and the two longitudinal side faces.