33results about "Active radio relay systems" patented technology

The application provides a method for analyzing a pointing angle of an inter-satellite link, comprising: obtaining orbital elements of a satellite and orbital parameters of a target satellite matched with an SGP4 model in a J2000.0 inertial coordinate system; determining a target recursion time t; obtaining positions of the satellite and the target satellite at the time t in the J2000.0 inertial coordinate system; determining a pointing vector from the satellite to the target satellite at the time t in the J2000.0 inertial coordinate system; determining the pointing vector in a satellite orbital coordinate system; determining the pointing vector in a satellite body coordinate system; determining the pointing vector in a satellite antenna coordinate system; determining a pointing angle of the satellite antenna coordinate system at the target recursion time; and determining whether a cycle number reaches a set cycle number, if the cycle number does not reach the set cycle number, continuously obtaining the pointing angle of the satellite antenna coordinate system at a next target recursion time until the pointing angle of the satellite antenna coordinate system at the set cycle number is obtained.

An embodiment provides a method for operating a relay UE in a wireless communication system, the method comprising: establishing a PC5 unicast link with a remote UE, by the relay UE; transmitting an RRC setup request to a first base station, by the relay UE; receiving an RRC reject message including a first waitTime from the first base station, by the relay UE; and transmitting, on the basis of reception of the RRC reject message, a first notification message to the remote UE, by the relay UE, wherein the first notification message includes a second waitTime based on the first waitTime received by the relay UE from the first base station.

To provide a radio communication device that can properly relay radio waves according to the reception status of the radio waves.SOLUTION: A radio communication device 10 is a radio communication device that transmits re-radiated waves by relaying reception signals received from the outside and includes a branch part 111, a detection part 112, a control part 113, a signal amplification part, a terminal resistance 130 and a switch part 114. The branch part 111 divides the reception signal and generates the first branch signal and the second branch signal. The detection part 112 detects the reception signal power of the first branch signal. The control part 113 determines a transmission path of the second branch signal on the basis of the reception signal power and threshold information stored in a storage part 115 in advance. The signal amplification part amplifies the power value of the second branch signal. The terminal resistance 130 consumes the energy of the signal. The switch part 114 switches the transmission path of the second branch signal to the signal amplification part or the terminal resistance 130 on the basis of the result determined by the control part 113.SELECTED DRAWING: Figure 3

An Inter-Satellite-Link (ISL) for an Open Radio Access Network (O-RAN) that is part of a Non-Terrestrial Network (NTN). The disclosed embodiment of an O-RAN system makes use of multiple satellite systems in combination with terrestrial based systems in various configurations to carry out the O-RAN system functions. An O-RAN system includes, among other structures and functions, a Radio Unit (RU), a Distributed Unit (DU), and a Central Unit (CU). This disclosure introduces various configuration / hierarchies of using satellites for the hardware and software to carry various portions of the RU, DU and CU in the O-RAN architecture. Various functions of the network can be implemented by satellite, with each satellite providing some level of RU and DU functionality. In one alternative, one satellite in a group of satellites acts as the DU in the form of a router, communicating with other satellites via the ISL, acting as a router.

This application is a divisional application of 202180075025.6. This application discloses a state transition method, apparatus, device, and storage medium, relating to the field of mobile communications. The method includes: a relay terminal connected to an access network device, and the relay terminal connected to at least one communication terminal, the communication terminal connecting to the access network device via the relay terminal. The method includes: controlling at least one communication terminal to leave the connection state with the access network device; upon determining that all communication terminals connected to the access network device via the relay terminal have left the connection state with the access network device, sending a first control message to the relay terminal, the first control message indicating that the relay terminal has left the connection state with the access network device, preventing the relay terminal from remaining connected to the access network device and continuing to consume resources, thus saving the relay terminal's resource consumption and improving the communication quality of the relay terminal.

This disclosure relates to battery packs and wireless communication devices, as well as wireless communication methods for battery packs. The technical problem to be solved is to propose a mechanism that enables a main battery management system (BMS) and multiple slave BMSs to perform radio frequency (RF) communication via repeaters based on an active phased array antenna system. To this end, this disclosure aims to provide a configuration that allows the collection of battery pack status and the transmission of corresponding control signals via repeaters based on an active phased array antenna system, wherein the repeaters perform RF communication between multiple slave BMSs and the main BMS.

This application discloses a beam recovery method and apparatus. The method includes: communicating, by a relay node, with a network device by using a serving beam; after a serving beam failure is detected, further monitoring the serving beam and determining whether the serving beam is recovered; and if the serving beam is recovered, further communicating, by the relay node, with the network device by using the serving beam. According to the beam recovery method, wastage of resources is reduced during beam recovery, and a time for beam recovery is further shortened.

A system and method for managing emergency messaging services is disclosed. The system receives request for transmitting emergency message from user equipment (UE) to geosynchronous equatorial orbit (GEO) satellite. Further, the system determines current location information of the UE. The system determines satellite location of the GEO satellite in proximity to the UE. The system computes a threshold azimuth angle between the UE and the GEO satellite. Further, the system determines an azimuth angle of the UE. Furthermore, the system determines a deviation level between the computed threshold azimuth angle and the determined azimuth angle of the UE. The system further generates an alignment recommendation message for the UE at real-time. Furthermore, the system validates the alignment recommendation message based on signal strength, and signal quality of the UE. Additionally, the system initiates transmission of the emergency message from UE to GEO satellite.

The present disclosure relates to a battery pack and a wireless communication apparatus, and a wireless communication method thereof. The battery pack comprises a pack case; a plurality of battery modules mounted inside the pack case; a plurality of slave battery management systems (BMSs) that are mounted on each battery module and collect battery status information of each battery module; and a master BMS configured to receive the battery status information from each of the plurality of slave BMSs through radio frequency (RF) communication and integrate and manage the plurality of slave BMSs, wherein RF communication is performed between the plurality of slave BMSs and the master BMS through a repeater based on an active phased array antenna system.

To provide a rebroadcasting system capable of detecting a stop of rebroadcast audio in a non-interruption facility.SOLUTION: According to an embodiment, a rebroadcasting system includes a rebroadcasting device that receives broadcast radio waves and rebroadcasts the broadcast radio waves to a provision area, and a center device connected to the rebroadcasting device via a communication network. The rebroadcasting device includes a receiving unit, a retransmitting antenna, a disconnection detection unit, and a notification unit. The receiving unit receives the broadcast radio waves. The retransmitting antenna is installed in the provision area and rebroadcasts the broadcast radio waves received by the receiving unit. The disconnection detection unit detects a disconnection of the retransmitting antenna. When the disconnection detection unit detects a disconnection, the notification unit notifies the center device of the disconnection of the retransmitting antenna via the communication network.SELECTED DRAWING: Figure 2

Generally, system and method for calibration an in-orbit satellite are provided. The method may comprise transmitting, by a Geosynchronous (GEO) satellite, a GEO satellite signal and receiving, by a Low Earth Orbiting (LEO) satellite, the GEO satellite signal when the LEO satellite crosses a predetermined transmission footprint of the GEO satellite at a predetermined LEO satellite location. The method may comprise determining, by a base station, a GEO satellite location at which the GEO satellite signal is received by the LEO satellite. The method may comprise comparing, by the base station, the transmitted GEO satellite signal and the received GEO satellite signal and further determining, by the base station, based on at least one of the comparison thereof, the predetermined LEO satellite location and the GEO satellite location, a GEO satellite transmission performance at a specific geographical location on ground.

The present application relates to the technical field of communications, and discloses a communication scheduling method, a communication device, and a computer‑readable storage medium. The communication scheduling method of embodiments of the present application comprises: a first base station acquires target scheduling information, wherein the target scheduling information comprises terminal scheduling information of the first base station and terminal scheduling information of at least one second base station, and terminals scheduled by all the terminal scheduling information are located within the coverage of a same relay device; the first base station determines terminal scheduling modes for the first base station and the at least one second base station on the basis of the target scheduling information, the terminal scheduling mode comprising at least one of a time division scheduling mode, a frequency division scheduling mode and a space division scheduling mode; the first base station sends first information to each second base station, the first information being used for notifying the terminal scheduling mode.

A method for dynamic beam optimization in satellite communication and a satellite communication terminal are disclosed. The terminal has a locally pre-installed hybrid architecture deep learning model. The specific steps are as follows: The terminal collects spatiotemporal feature data such as space, time, orbit, interference, and position in real time and stores it in a local historical database; it calculates the instantaneous phase angle of the satellite based on the position features and satellite ephemeris, identifies the scene type, and adapts the interference features to obtain optimized features; it extracts historical multi-frame spatiotemporal position features that match the current phase angle, combines them with the optimized features to construct a multi-dimensional feature matrix, inputs it into the model, and outputs spatial and temporal feature scores; it calculates dynamic weights by combining real-time interference and scene, balances the spatiotemporal score decision ratio, integrates historical reputation scores to calculate a comprehensive beam score, selects the optimal beam, and stores the decision result back into the local historical database. This invention integrates spatiotemporal multi-dimensional features, scene-based signal processing, and local deep learning inference to achieve beam optimization, improving the reliability of satellite communication and the efficiency of beam decision-making.

The present disclosure relates to a wireless communication system and a wireless communication method. This wireless communication system comprises: a zero-order communication station having a single or a plurality of antennas for first communication and a single or a plurality of antennas for second communication; a primary communication station having a single or a plurality of antennas for first communication and a single or a plurality of antennas for second communication; and a secondary communication station having a single or a plurality of antennas for second communication. The zero-order communication station is configured to carry out processing for performing wireless communication using the first communication for communication with the primary communication station when the first communication is available, and to carry out processing for performing wireless communication using the second communication by MIMO for communication with the primary communication station when the first communication is not available. The secondary communication station occupies and uses the second communication of the zero-order communication station when the primary communication station uses the first communication, and uses the second communication of the zero-order communication station in common with the primary communication station when the primary communication station uses the second communication by MIMO.

This invention provides a relay device, a communication system, and a relay method that can significantly reduce processing delay and processing costs while utilizing VLC. [Solution] The relay device includes a wireless receiving unit having multiple receiving antennas that receive wireless communication signals by Multiple-Input Multiple-Output, MIMO; a frequency conversion unit that converts the wireless communication signals received via the multiple receiving antennas into individual signals of different frequency bands for each receiving antenna; a radio wave-to-optical conversion unit that converts each of the individual signals into a visible light communication signal using visible light; and a visible light transmission unit that transmits multiple visible light communication signals toward a wireless communication signal destination device.

A radio communication relay module and system for radio communication systems that allow radio operators to transition from operation outside a structure such as a vehicle or building to operation inside such a structure are provided. The module has a radio interface for connecting to a radio, and a first interface cable for connecting the module to a second interface cable. The second interface cable connects to a power supply and antenna of the vehicle or other structure. When the first and second interface cables are connected, the radio uses the structure's antenna and power system.

Methods and apparatuses that facilitate relaying information between source and destination devices in a wireless local area network (WLAN). A wireless communication relay device comprises a transceiver and a processor operably connected to the transceiver. The transceiver is configured to receive, from a first wireless communication device, a first frame. The processor is configured to determine that the first frame is destined for a second wireless communication device. The transceiver is further configured to transmit, to the second wireless communication device, a second frame based on the first frame. The relay device, the first wireless communication device, and the second wireless communication device are Institute of Electrical and Electronics Engineers (IEEE) 802.11 devices.

Embodiments of the present disclosure relate to methods, devices and computer readable media for communication. A network device determines an application time for a beam of a repeater device and a SCS associated with the application time, and determines time domain resource allocation information indicating the application time based on the determined SCS. The network device transmits, to the repeater device, the time domain resource allocation information and indication information regarding the indicating of the application time. In this way, an application time for a beam of a NCR may be efficiently indicated.

A wireless relay system includes a first software radio device that performs radio communication with a radio control device and a second software radio device that performs radio communication with a radio terminal. The first software radio device captures, as iq data, a radio signal received from the radio control device, transfers the captured iq data to the second software radio device in real time, converts the iq data transferred from the second software radio device into a radio signal, and transmits the radio signal to the radio control device. The second software radio device captures, as iq data, a radio signal received from the radio terminal, transfers the captured iq data to the first software radio device in real time, converts the iq data transferred from the first software radio device into a radio signal, and transmits the radio signal to the radio terminal.

The adaptive satellite communications system uses an interference-aware scheduler to select slot transmission parameters for transmitting messages. When scheduling transmission of a message by a particular terminal, the scheduler determines interference parameters of any external communications systems relative to the transmitter location and intended transmission time period. The scheduler can then use this to estimate whether a particular combination of slot transmission parameters is likely to cause interference and then adjust the slot transmission parameters to reduce the potential interference. The scheduler may use an optimization method configured to select slots subject to constraints regarding latency, probability of transmission failure / success, and interference.

Apparatuses and methods for time-division duplex (TDD) for network controlled repeaters (NCRs). A method for an NCR includes identifying, by an NCR mobile termination (NCR-MT) entity, information for first TDD uplink-downlink (UL-DL) patterns for a first cell associated with an NCR control link (C-link) and information for second TDD UL-DL patterns for a second cell associated with an NCR backhaul link (BH-link). The method further includes receiving, by the NCR-MT entity on the NCR C-link, downlink signals or channels on the first cell in first downlink or flexible symbols or slots of the first TDD UL-DL patterns and receiving, by an NCR forwarding (NCR-Fwd) entity on the NCR BH-link, radio frequency signals on the second cell in second downlink or flexible symbols or slots of the second TDD UL-DL patterns. The first and second cells are associated with different carrier frequencies. The first and second TDD UL-DL patterns are different.

Aspects of the subject disclosure may include, for example, a group of controllable surface cells of an intelligent controllable surface, wherein the surface cells include input surfaces in communication with a waveguide and configured to receive an RF carrier signal via the waveguide. The controllable surface also includes a group of output surfaces and a group of control terminals in communication with the controllable surface cells and configured to receive an information signal. The intelligent controllable surface includes a group of controllable devices in communication with the control terminals, wherein the controllable devices are configured to control scattering parameters of the controllable surface cells responsive to the information signal to impress a direct modulation upon the RF carrier signal. Other embodiments are disclosed.

This invention discloses a high-speed satellite alignment method for portable satellite stations based on adaptive control, relating to the field of satellite communication technology. The method includes: collecting basic alignment parameters of the portable satellite station and unifying the time and coordinate references to form a basic parameter set; calculating the theoretical pointing angle of the target communication satellite using the basic parameter set; constructing and evaluating a pointing consistency model based on historical satellite communication link records to generate pointing reliability and a starting pointing angle set; parameterizing antenna installation deviations based on the starting pointing angle set; and constructing a joint constraint relationship between installation deviation parameters, antenna motion state, and servo drive capability based on the basic parameter set to generate an reachable angle domain. This invention, by constructing an online estimation model and evaluating the benefits of candidate control actions based on the reachable angle domain and pointing reliability, can quantify in real time the contribution of different control actions to shortening link establishment time during satellite alignment.

The present disclosure relates to a battery pack and a wireless communication apparatus, and a wireless communication method thereof, and a technical problem to be solved is to propose a mechanism that enables a master battery management system (BMS) and a plurality of slave BMSs to perform radio frequency (RF) communication through a repeater based on an active phased array antenna system. To this end, the present disclosure is directed to providing a configuration that enables the collection of status of a battery pack and the transmission of corresponding control signals through a repeater based on an active phased array antenna system that performs RF communication between a plurality of slave BMSs and a master BMS.

This provides an improved system for satellite-based communications that handles communications with mobile stations in environments beyond the design assumptions of the mobile stations, without requiring modifications to the mobile stations themselves. [Solution] A multiple access base station transceiver station 106 in Earth orbit assigns each of the multiple ground mobile stations 104 to a channel block within a multiple channel block, and modulates the signal transmitted to the ground mobile station to a frequency obtained by adding a Doppler frequency offset that is the amount of the expected Doppler shift inverted in sign, due to the relative movement of the ground mobile station and the multiple access base station transceiver station. When the ground mobile station receives the signal, it appears to the ground mobile station that the communication between the ground cellular base station and the ground mobile station is compatible, even if the speed of the ground mobile station relative to the multiple access base station transceiver station exceeds the speed limit specified in the multiple access protocol.

An arrangement suitable for a mobile local wireless network, comprising a gateway having means, to facilitate a local short-range wireless network, to receive at least sensor measurement data via the short-range wireless network, and to be connected to an in-situ computing device, a computing device connected to the gateway, the computing device comprising means to obtain sensor measurement data via the gateway from one or more sensor nodes, at least one sensor node arranged to transmit measurement data via long-range wireless networks, and to transmit measurement data and to receive at least beacon signals via short-range communication means, wherein the gateway is arranged to send beacon signals, and wherein the at least one sensor node at receival of a beacon signal is arranged to utilize only the short-range wireless network for sending the measurement data and terminate transmission of data over long-range wireless networks for a period of time, in accordance with commands received from the gateway or as long as a beacon signal is detected at the sensor nodes. Corresponding gateway, method and computer-program product are also represented.