Abstract: The present invention relates to satellite systems and more particularly, to the provision of novel systems and methods for verifying the in-orbit performance and operation of satellite communications subsystems. In contrast to traditional Payload IOT (in-orbit test), the invention operates without an uplink signal, by generating hardware-specific signatures using isolated, internally generated, thermal noise. It has been found that this noise provides a very stable, repeatable signal for testing. Prior to launch, a repeater command sequence is executed to generate a hardware-specific signature based on the internally-generated noise. The same repealer command sequence is then executed in-orbit to determine whether the hardware-specific signature has changed. The two signatures may be recorded and compared using a simple tool such as a spectrum analyzer.

Abstract: A communication device for transmitting a plurality of wanted signals to a satellite from a transmitter, each of the wanted signals transmitted by the device being for being addressed to a given transmitting spot, the device including a set of reference values of powers and phases of at least a first reference signal received at different points of at least one transmitting spot, a first wanted signal generating an interfering signal in a neighbouring spot, the transmitter generating at least one wanted neighbouring signal in a neighbouring spot of the first spot, the transmitter generating a first correcting signal from the first signal transmitted and at least a first phase value and a first power value of a set of reference values, the transmitter transmitting a combination of the correcting signal and of the neighbouring signal in order to generate a corrected neighbouring signal.

Abstract: A system includes an antenna of a ground station. The antenna is configured to generate a plurality of signal beams. The plurality of signal beams defines a plurality of cells in the sky. The antenna is mechanically fixed to a particular orientation. The antenna includes a phased array antenna. The system also includes a processor coupled to the antenna. The processor is configured to initiate concurrent communications with a plurality of spacecraft via the plurality of signal beams. The plurality of spacecraft is located within the plurality of cells.

Abstract: The present disclosure provides a method and a device in wireless transmission. A User Equipment (UE) transmits Q piece(s) of indication information, and then transmits a first reference signal and a first radio signal on a first carrier, wherein the first radio signal includes L radio sub-signals, and the L radio sub-signals occupy L time intervals respectively. The Q piece(s) of indication information is(are) used for determining ratios of transmit powers of the first radio signal to transmit powers of the first reference signal in Q time interval(s) respectively. The Q time interval(s) is(are) one(Q ones) of the L time intervals. The present disclosure can implement dynamic regulation of transmit powers of the first radio signal in the Q time interval(s), thereby optimizing the transmit power of the first radio signal on the premise of ensuring physical channels carrying control information acquire sufficient transmit powers in carrier aggregation scenarios.

Abstract: A workflow management system is provided. The system includes a plurality of communication devices interconnected to form an ad hoc network. Mobile devices of the communication devices are each associated to a user and stores a user profile of the user. The system also includes a workflow management module configured to assign tasks to users via task assignments transmitted to the mobile devices and to modify the assigned task based on changes to status of tasks, change in available mobile devices and/or changes in situational status affecting the ad hoc network. A method for managing workflow is also provided.

Abstract: A method for a user equipment (UE) to determine a total power for transmissions in a cell group (CG) or a power for transmission of a channel or signal in a cell of a CG. The method comprises receiving configuration information for first and second CGs and for first and second maximum total powers for transmissions in the first and second CGs and determining first and second total powers for transmissions in the first and second CGs, respectively. The method also comprises receiving configuration information for a set of values for one or more parameters used to determine a power for transmission of a channel or signal in a cell of a CG and an indication for a value for each parameter from the one or more parameters.

Abstract: An amplifier system includes an input network having a plurality of input ports; an output network having a plurality of output ports; a plurality of amplification units coupled between the input network and the output network, the plurality of amplification units configured to amplify signals from the plurality of input ports; and a calibration unit coupled between the plurality of amplification units and the output network to calibrate amplified signals from the plurality of amplification units.

Abstract: A mobile device is used for wireless communication with at least one flying object. The mobile device receives information from a first flying object via an actual communication channel. Furthermore, the mobile device comprises a beamforming unit for forming at least two beams. In addition to this, the beamforming unit is configured to steer a beam of the actual communication channel or an actual communication antenna of the mobile device based on the information received from the first flying object by the mobile device.

Abstract: A channel propagation emulator includes a radio peripheral configured to receive input radio frequency (RF) data and modify the input RF data according to channel effects including signal delay, propagation loss and Doppler shift effect to generate an RF output, and a host device operably coupled to the radio peripheral. The RF output represents a modification of the input RF data based on a propagation model. The host device operably coupled to an external controller and is configured to define emulation parameters based on the propagation model. The propagation model is selected at the external controller. The external controller is configured to provide instructions for implementing the Doppler shift effect to include spreading that is multiplicative in frequency.

Abstract: It is presented a method for testing a cable connectable to a remote radio head. The method is performed in a test device and comprises the steps of: generating an outbound test container, the outbound test container comprising digital samples representing a test signal; transmitting the outbound test container and a frequency parameter indicating a frequency on which the test signal is to be transmitted to a converter device being connectable to a plurality of remote radio heads via respective cables, for transmission by the converter device; receiving an inbound test container, the inbound test container comprising digital samples of a response signal received by the converter device based on the outbound test container; and evaluating the inbound test container.

Abstract: Systems and methods are described for reducing a maximum allowable transmit power of a wireless device. Instructions to reduce a maximum transmit power of wireless devices operating at a carrier band edge of a band channel maybe received at an access node. Power headroom reports may be collected from the wireless devices. The wireless devices may be classified based on the collected power headroom reports. Power reduction may be imposed on wireless devices classified as low power wireless devices and wireless devices classified as high power wireless devices may be handed off to a neighboring band channel.

Abstract: Technologies for aligning an antenna array of a vehicle by a compute device are disclosed. A compute device may control an antenna array to connect to a base station. The compute device may determine one or more movement parameters of the vehicle, such as an indication that the vehicle is going to take a U-turn. The compute device may then control the antenna array to track the base station during the U-turn by physically rotating the antenna array.

Abstract: In one implementation, a communication device comprising one or more processors is configured to participate in a plurality of talkgroups. The one or more processors are configured to receive a communication transmitted from a satellite constellation indicating that a first priority talkgroup has been assigned for the communication device and to receive one or more signal transmitted from the satellite constellation via a control channel indicating that the first priority talkgroup is active, in response to which the one or more processors may determine that the first priority talkgroup has been assigned for the communication device and that the first priority talkgroup is active. Consequently, the one or more processors may set the communication device to the first priority talkgroup such that the communication device starts receiving communications via the first priority talkgroup.

Abstract: A tristate output buffer includes a first branch with a first buffer, and a second branch with a second buffer. The first buffer includes a supply port, a ground port, an output port, two switchable semiconductor elements of a first type, and two switchable semiconductor elements of a second type. Switching behavior of the switchable semiconductor elements of the first type differs from switching behavior of the switchable semiconductor elements of the second type. The two switchable semiconductor elements of the first type are connected in series and are between the supply port and the output port such that they can be put in a conductive state independent of each other. The two switchable semiconductor elements of the second type are connected in series and are between the ground port and the output port such that they can be put in a conductive state independent of each other.

Abstract: A method is provided for interleaving frequency reuse plans of multiple satellites to form an aggregate frequency reuse cell plan. A first plurality of spot beams is generated by a first satellite for a first frequency reuse plan based on radio frequency (RF) spectrum bands. A second plurality of spot beams is generated by a second satellite for a second frequency reuse plan based on the RF spectrum bands. The first and second plurality of spot beams are interleaved to generate an aggregate frequency reuse cell plan. According to the aggregate frequency reuse plan, each of a first plurality of cells is covered by a combination of at least two of the plurality of spot beams of the first satellite, and each of a first plurality of cells is covered by a combination of at least two of the plurality of spot beams of the second satellite.

Abstract: A method and system for distributed messaging between a plurality of computer devices using a short range wireless communication protocol (SRWP) is disclosed. The communication protocol can be one in which slave devices provide data to master devices. A device automatically establishes master and slave connections with other devices via the protocol as they come into range. A user-entered message is displayed on the device and broadcast by the device over slave connections to other connected devices. Messages received by the device over its master connections are displayed and also rebroadcast to other connected devices. Messages can be displayed for a limited time period during which they fade or otherwise are altered to provide a visual indication of the display lifetime remaining for that message. A relay can be provided to receive an rebroadcast messages to connected devices and inject into the SRWP network from devices outside the network.

Abstract: Method and device for responding to an audio inquiry. The electronic computing device monitors audio communications transmitted between communication devices that are members of a talk group on a talk group channel. The electronic computing device detects an audio inquiry from a first communication device and generates an audio content response to be provided in response to the audio inquiry. The electronic computing device determines based on one or both of the audio inquiry and the audio content response, and as a function of the context information, that the audio content response is to be individually provided to the first communication device. The electronic computing device then establishes a private call with the first communication device and provides the audio content response to the first communication device via the private call.

Abstract: A wireless device receives from a base station one or more messages comprising configuration parameters of a plurality of cells. The plurality of cells comprising one or more first cells of a first type and one or more second cells of a second type. The wireless device determines one or more transmission powers. The wireless device transmits, via one or more cells, one or more signals employing the one or more transmission powers.

Abstract: A walkie-talkie messaging system includes a processing controller device, a sensing signal transmission unit, a master walkie-talkie, and a plurality of slave walkie-talkies. The sensing signal transmission unit is connected to the processing controller device via a wired or wireless connection, the processing controller device is connected to the master walkie-talkie via a wired connection, and the master walkie-talkie is connected to the slave walkie-talkies via a wireless connection. The processing controller device further includes a comparison module, a database, a determination module and a schedule module. The database is connected to the comparison module and the determination module, and the determination module is connected to the schedule module. The master walkie-talkie is connected to the processing controller device via an audio line, such that the processing controller device is capable of determining whether the master walkie-talkie is occupied by an activity.

Abstract: Signaling strategies for an advanced receiver with interference cancellation (IC) and suppression is discussed. Upon enablement of an advanced interference cancellation procedure according to the disclosure, transmitters within the enabled area transmit according to transmission restriction configurations that provide transmission limits based on either frequency, time, or scheduling. The restrictions on the transmitters reduces the complexity of processing by neighboring advanced receivers for cancellation of interference from the restricted transmitters. At the advanced receiver, transmission information, such as scheduling, reference signal (RS), resource block (RB) allocation, and the like, may either be determined through blind detection or received directly through signaling. The advanced receiver may use this transmission information associated with each interfering signal to detect, decode, and subtract the interfering signals from the received transmissions.