Abstract: A system for compressing, storing and providing gas, in particular hydrogen, having a compressing device, a storage device, an expansion machine and a refrigeration machine, in particular an absorption-type refrigeration machine, wherein the system is configured to compress received gas by means of the compressing device, in particular in multiple stages, and to store the compressed gas in the storage device, wherein the system is configured to refrigerate the compressing device using the refrigeration machine and the expansion machine.

Abstract: One embodiment is directed to a system to provide wireless coverage for a plurality of cells. The system comprises a virtualized headend and a plurality of remote units. The system is configured to operate as a distributed antenna system (DAS) when serving at least one of the cells. The plurality of remote units is configured to communicate with the virtualized headend using a switched Ethernet network. The virtualized headend is configured to communicate downlink user-plane data for a first cell served by at least one open radio access network (O-RAN) distributed unit (DU) to one or more remote units used to serve the first cell. The system is configured to route the downlink user-plane data for processing based on respective evolved Common Public Radio Interface (eCPRI) or Institute of Electrical and Electronics Engineers (IEEE) 1914.3 headers included with the downlink user-plane data.

Abstract: In an embodiment, a communication circuit includes a frequency-shifting circuit coupled to a signal path, which is configured to carry, during a first period, an information signal having a first frequency. The frequency-shifting circuit is configured to receive a control signal, to shift the first frequency of the information signal by a second frequency in response to the control signal having a first control value, and to shift a third frequency of an interference signal on the signal path during a second period by a fourth frequency in response to the control signal having a second control value. For example, such a communication signal can be configured to shift the frequencies of an interference signal generated by the signal path out of the passband of an adjacent signal path to reduce the interference superimposed on a signal carried by the adjacent signal path.

Abstract: One embodiment is directed to a system to provide wireless coverage for a plurality of cells. The system comprises a virtualized headend and a plurality of remote units. The system is configured to operate as a distributed antenna system (DAS) when serving at least one of the cells. The plurality of remote units is configured to communicate with the virtualized headend using a switched Ethernet network. The virtualized headend is configured to communicate downlink user-plane data including frequency-domain IQ data and downlink control-plane data for a first cell served by at least one open radio access network (O-RAN) distributed unit (DU) to at least some of the remote units used to serve the first cell. At least some physical layer baseband processing for a wireless interface used to serve the first cell is performed by the virtualized headend or the remote units used to serve the first cell.

Abstract: In one embodiment, a RF signal repeater switchable between SISO and MIMO comprises: a controller; a first transmitter path switchably coupled to first donor and coverage antennas; a second transmitter path switchably coupled to second donor and coverage antennas; a first receiver path switchably coupled to the first donor and coverage antennas; a second receiver path switchably coupled to the second donor and coverage antennas. The controller configures the repeater for a MIMO TDD operating mode by: configuring the first transmitter path and the second receiver path to repeat at least a first MIMO channel of UE uplink RF signals and at least a first MIMO channel of base station downlink RF signals; and configuring the second transmitter path and the first receiver path to repeat at least a second MIMO channel of UE uplink RF signals and at least a second MIMO channel of base station downlink RF signals.

Abstract: One embodiment is directed to a system to provide wireless coverage for a plurality of cells. The system comprises a virtualized headend and a plurality of remote units. The system is configured to operate as a distributed antenna system (DAS) when serving at least one of the cells. The plurality of remote units is configured to communicate with the virtualized headend using a switched Ethernet network. The virtualized headend is configured to communicate downlink user-plane data including frequency-domain IQ data and downlink control-plane data for a first cell served by at least one open radio access network (O-RAN) distributed unit (DU) to at least some of the remote units used to serve the first cell. At least some physical layer baseband processing for a wireless interface used to serve the first cell is performed by the virtualized headend or the remote units used to serve the first cell.

Abstract: One embodiment is directed to an open radio access network to provide wireless coverage for a plurality of cells at a site and that comprises a virtualized headend comprising one or more base-station nodes and a plurality of unified remote units deployed at the site. Each of the unified remote units is able to support multiple functional splits, multiple wireless interface protocols, multiple generations of radio access technology, and multiple frequency bands. The unified remote units and functional split used to serve each cell can be changed (for example, on-the-fly as a part of an automatic or manual adaptation process that is a function of one or more monitored performance attributes of the open radio access network such as network bandwidth, network latency, processing load, or processing performance). The unified remote units can be implemented in a modular manner with a backplane to which different radio modules can be coupled.

Abstract: One embodiment is directed to an open radio access network to provide wireless coverage for a plurality of cells at a site and that comprises a virtualized headend comprising one or more base-station nodes and a plurality of unified remote units deployed at the site. Each of the unified remote units is able to support multiple functional splits, multiple wireless interface protocols, multiple generations of radio access technology, and multiple frequency bands. The unified remote units and functional split used to serve each cell can be changed (for example, on-the-fly as a part of an automatic or manual adaptation process that is a function of one or more monitored performance attributes of the open radio access network such as network bandwidth, network latency, processing load, or processing performance). The unified remote units can be implemented in a modular manner with a backplane to which different radio modules can be coupled.

Abstract: A system provides in-situ surface processing of an engine blade within an aircraft engine. The system includes an endoscopic processing instrument with a variable-angle tubular shaft. The processing instrument is inserted radially through a lateral access opening into the aircraft engine in a non-angled initial configuration. The lateral access opening is downstream of the engine blade. The processing instrument has a rotatably driven tool holder at a distal end of the shaft for a surface processing tool head. In an angled working configuration, a tool head inserted into the tool holder is applied to a flow edge of the engine blade. Furthermore, a process uses the corresponding system.

Abstract: A method for redirecting a print job request for electronic transmission is disclosed. For example, a method is executed by a processor and includes receiving a print job request for a document, analyzing the document to identify a document type, determining that the document type is a candidate for electronic transmission, causing a notification to be displayed to transmit the document electronically without executing the print job request, receiving a confirmation to transmit the document electronically, and transmitting the document electronically to a network storage device.

Abstract: In one embodiment, an over-the-air millimeter wave repeater for a communications network comprises: a donor unit including a first plurality of modular electronic components and an access point including a second plurality of modular electronic components. The donor unit communicates downlink mmWave spectrum wireless signals received from a base station to the access point and radiates uplink mmWave spectrum wireless signals received from the access point to the base station. The access point radiates the downlink mmWave spectrum wireless signals received from the donor unit into a coverage area, receives the uplink mmWave spectrum wireless signals received from the coverage area, and communicates the uplink mmWave spectrum wireless signals to the donor unit. The first and second plurality of modular electronic components includes at least one of a modular antenna component, a modular signal conditioning component, a modular signal interface component, and a modular controller.

Abstract: In an embodiment, a communication circuit includes a frequency-shifting circuit coupled to a signal path, which is configured to carry, during a first period, an information signal having a first frequency. The frequency-shifting circuit is configured to receive a control signal, to shift the first frequency of the information signal by a second frequency in response to the control signal having a first control value, and to shift a third frequency of an interference signal on the signal path during a second period by a fourth frequency in response to the control signal having a second control value. For example, such a communication signal can be configured to shift the frequencies of an interference signal generated by the signal path out of the passband of an adjacent signal path to reduce the interference superimposed on a signal carried by the adjacent signal path.

Abstract: Systems and methods for enhancing coverage of repeater systems by time-division beamforming are provided. A repeater system includes an interface configured to communicate signals with a base station and a phased antenna array. The phased antenna array includes a plurality of antenna elements, wherein the phased antenna array is configured to generate a beam in a plurality of predefined directions and wirelessly communicate signals with user equipment in a coverage area of the phased antenna array. The repeater system further includes a beamforming circuit communicatively coupled to the phased antenna array, wherein the beamforming circuit is configured to adjust a direction of the beam generated by the phased antenna array to correspond to one of the plurality of predefined directions at a particular time according to a schedule.

Abstract: In one embodiment, a RF signal repeater switchable between SISO and MIMO comprises: a controller; a first transmitter path switchably coupled to first donor and coverage antennas; a second transmitter path switchably coupled to second donor and coverage antennas; a first receiver path switchably coupled to the first donor and coverage antennas; a second receiver path switchably coupled to the second donor and coverage antennas. The controller configures the repeater for a MIMO TDD operating mode by: configuring the first transmitter path and the second receiver path to repeat at least a first MIMO channel of UE uplink RF signals and at least a first MIMO channel of base station downlink RF signals; and configuring the second transmitter path and the first receiver path to repeat at least a second MIMO channel of UE uplink RF signals and at least a second MIMO channel of base station downlink RF signals.

Abstract: Embodiments of repeater systems (such as single-node repeaters and distributed antenna systems) suitable for use with 5G NR base stations are disclosed.

Abstract: The present invention relates to a robot (2) configured to pick up and transport items; wherein the robot (2) comprises a pick up unit (10), wherein the pick up unit (10) comprises a pick up device (110) configured to pick up and release items, wherein the robot (2) is configured to move the pick up device (110) along a first direction, rotate the pick up device (110) around a first axis, and extend and retract the pick up device (110) along a second direction different from the first direction; wherein the robot (2) further comprises a shelf unit (8) configured to temporarily store items, wherein the shelf unit (8) comprises a rotatable portion (80) and a support structure (84), wherein the rotatable portion (80) is rotatable with respect to the support structure (84). The present invention also relates to a use of the robot and to a corresponding method.

Abstract: A switching control module can optimize time division duplexing operations of a distributed antenna system (“DAS”). The switching control module can include a measurement receiver and a processor. The measurement receiver can measure signal powers of downlink signals in a downlink path of the DAS. The processor can determine start times for downlink sub-frames transmitted via the downlink path based on downlink signal powers measured by the measurement receiver exceeding a threshold signal power. The processor can identify a clock setting that controls a timing of switching signals used for switching the DAS between an uplink mode and a downlink mode. The processor can statistically determine a switching time adjustment for the clock setting based on switching time differentials between the clock setting and the start times. The processor can update the clock setting based on the switching time adjustment.

Abstract: In one example, a system includes a central unit and a plurality of radiating points communicatively coupled to the central unit and located remotely from the central unit. Each respective radiating point includes a detector configured to evaluate uplink signals received from a coverage area of the respective radiating point. The detector is further configured to determine which services of a plurality of services supported by the system are needed and which services of the plurality of services supported by the system are not needed based on the evaluation of the uplink signals. The detector is further configured to send a request, to the central unit, to activate a service determined to be needed.

Abstract: One embodiment is directed to an open radio access network to provide wireless coverage for a plurality of cells at a site and that comprises a virtualized headend comprising one or more base-station nodes and a plurality of unified remote units deployed at the site. Each of the unified remote units is able to support multiple functional splits, multiple wireless interface protocols, multiple generations of radio access technology, and multiple frequency bands. The unified remote units and functional split used to serve each cell can be changed (for example, on-the-fly as a part of an automatic or manual adaptation process that is a function of one or more monitored performance attributes of the open radio access network such as network bandwidth, network latency, processing load, or processing performance). The unified remote units can be implemented in a modular manner with a backplane to which different radio modules can be coupled.

Abstract: The present invention relates to a robot (2) configured to pick up and transport items; wherein the robot (2) comprises a pick up unit (10), wherein the pick up unit (10) comprises a pick up device (110) configured to pick up and release items, wherein the robot (2) is configured to move the pick up device (110) along a first direction, rotate the pick up device (110) around a first axis, and extend and retract the pick up device (110) along a second direction different from the first direction; wherein the robot (2) further comprises a shelf unit (8) configured to temporarily store items, wherein the shelf unit (8) comprises a rotatable portion (80) and a support structure (84), wherein the rotatable portion (80) is rotatable with respect to the support structure (84). The present invention also relates to a use of the robot and to a corresponding method.