103 results about "Broadband communication" patented technology

The invention discloses an optical terminal intensity instrument and an earthquake monitoring service system and method, and the optical terminal intensity instrument comprises an optical fiber modem and an MEMS sensor module. The optical fiber modem comprises an MCU (Microprogrammed Control Unit) and an optical communication module electrically connected with the MCU; the optical communication module is used for realizing network access and data uploading; the MEMS sensor module is electrically connected with the MCU; the MEMS sensor module is used for collecting seismic intensity data in real time; and the optical fiber modem is used for providing a dual data transmission channel comprising broadband communication and the seismic intensity data. According to the technical scheme provided by the invention, the MEMS sensor is embedded in the optical fiber modem, and a more dense, more efficient and more economical solution is provided for earthquake early warning and intensity rapid reporting.

The present disclosure provides a method for providing a service by using an ultra wide band (UWB) communication. The method for a first UWB device, according to an embodiment of the present disclosure, comprises the steps of: receiving a downlink time difference of arrival (DL-TDoA) message from at least one UWB anchor through a UWB channel; confirming on the basis of the DL-TDoA message that positioning of the first UWB device has failed; receiving a ranging message including position information about a second UWB device from the second UWB device; and measuring the position of the first UWB device on the basis of the DL-TDoA message and the position information about the second UWB device.

Enhanced protocols and devices may be used to alleviate loss of spectrum efficiency in wideband transmission. The protocols may implement a wideband transmission opportunity (TXOP) truncation where one or more of the channels involved in communication over the wideband are released. In one scenario, an access point (AP) may receive, from a wireless transmit receive unit (WTRU), a first CF-End frame that includes a duration field and a basic service set identifier (BSSID) field that includes an individual / group bit. On a condition that the individual / group bit of the BSSID field has a value of one (1), the AP may determine that a scrambling sequence of the first CF-End frame indicates a bandwidth associated with a transmit opportunity (TXOP) being truncated by the WTRU. The AP may then transmit a second CF-End frame at the bandwidth indicated by the scrambling sequence of the first CF-End frame.

The invention provides a low-altitude unmanned system air node optimal deployment method based on communication-link-energy consumption joint optimization. The method comprises the following steps: initializing an unmanned aerial vehicle group; the system constructs a performance model according to the real-time channel information, constructs a multi-objective collaborative optimization problem, and solves the multi-objective optimization problem by adopting an MOPSO-HGD algorithm to obtain an optimal result; deploying the unmanned aerial vehicle group to the optimal position according to the optimal result to form a virtual distributed MIMO array structure; setting an unmanned aerial vehicle electric quantity threshold value, judging the size of each unmanned aerial vehicle remaining electric quantity and the unmanned aerial vehicle electric quantity threshold value, and if the unmanned aerial vehicle remaining electric quantity is smaller than the unmanned aerial vehicle electric quantity threshold value, recycling the unmanned aerial vehicle; otherwise, re-determining the position of the unmanned aerial vehicle group; through a closed-loop control mechanism of channel perception-multi-target optimization-dynamic adjustment, the unmanned aerial vehicle relay system can still keep a high signal-to-noise ratio and strong robustness in a complex low-altitude environment, is suitable for scenes such as low-altitude broadband communication, emergency rescue and urban information networks, and has a good engineering application prospect.

The present disclosure provides a method for UWB session management. A method by which a first electronic device performs UWB communication, according to one embodiment of the present disclosure, may comprise the steps of: performing UWB ranging with a user device through a UWB session; determining, on the basis of the UWB ranging, whether movement of the UWB session to a second electronic device registered in the first electronic device is necessary; and, if it is determined that the movement of the UWB session to the second electronic device is necessary, transmitting UWB connection information about the second electronic device, wherein the UWB connection information can be used for connecting a UWB session between the user device and the second electronic device.

The invention discloses a communication method and device, a storage medium and equipment, and relates to the technical field of communication, and the method comprises the steps: in equipment comprising a broadband communication system and a narrowband communication system, when the broadband communication system meets a preset sleep condition, controlling the broadband communication system to enter a sleep state; when the narrowband communication system accords with a predetermined detection condition, switching to a candidate broadband working frequency point of the broadband communication system through the narrowband communication system for signal acquisition to obtain broadband frequency point data; detecting whether a broadband network signal exists on the broadband frequency point data; and if the broadband network signal exists on the broadband frequency point data, waking up the broadband communication system. According to the invention, the broadband communication system in the broadband and narrow converged communication equipment can reliably work as required, and the energy consumption of the broadband and narrow converged communication equipment is reliably reduced.

This invention discloses an integrated broadband communication and stereo remote sensing method based on multi-satellite cooperation. For a ground target area, a central satellite and several neighboring auxiliary satellites are selected from a low-Earth orbit (LEO) satellite constellation. Each satellite collaboratively transmits radio frames towards the joint beam coverage area. Ground users receive the shared pilot signal embedded in the radio frames to obtain channel state information and recover data. Simultaneously, the central satellite receives and stores the ground echo signal corresponding to the shared signal and performs channel estimation. Combining the Doppler center differences between echoes from different cooperating satellites, multi-view range image separation is achieved. Furthermore, a stereo synthetic aperture radar (SAR) imaging method is used to calculate the three-dimensional geographic coordinates of reflectors in the target area. This method achieves integrated collaboration of communication and remote sensing functions within a LEO satellite constellation, contributing to improved constellation resource utilization efficiency and three-dimensional observation capabilities of the target area.

In accordance with a first aspect of the present disclosure, an ultra-wideband (UWB) communication device is provided, comprising: a transmitting unit configured to initiate a device detection session by transmitting a pre-discovery message and to transmit, during the device detection session, at least one discovery message in order to discover one or more external devices; a receiving unit configured to receive, during the device detection session, one or more responses to the discovery message, wherein the responses have been transmitted by the external devices. In accordance with a second aspect of the present disclosure, a corresponding method of operating a UWB communication device is conceived.

The invention provides a bismuth-doped optical fiber and a preparation method and application thereof, the bismuth-doped optical fiber realizes C + L full-band positive gain through cooperation of Bi, Ge, La and Y and component proportion optimization: Bi is a core active component to form a BACS to generate near-infrared gain; la and Y improve the BACS concentration, inhibit non-radiation loss and enhance the gain efficiency; and the Ge adjusts the refractive index of the fiber core to guarantee stable optical transmission. According to the optimization, the problem of negative gain of the traditional BDF in the C + L wave band (especially 1524nm) is solved, the noise is reduced, and the practical value of broadband communication is improved.

The invention discloses a civil aviation data transmission system and method based on new generation aviation broadband communication, and belongs to the technical field of communication, the system comprises an air-space communication layer, an air operation layer, a land communication layer and a ground support layer, and the method comprises the following steps: dividing the transmission system into a general operation mode and an emergency operation mode according to whether an emergency occurs; dividing the collected flight data and cabin sound data, and further integrating the divided flight data to form five types of data sets; different data sets are transmitted through the air-space communication layer and the land communication layer based on different operation modes. By adopting the system and the method, four functions of real-time situation monitoring, scene reproduction on the ground, timely risk sensing and safe data storage are realized, and the breadth and depth of civil aviation safety capability and the real-time performance of data transmission are improved.

The invention provides an L-band-oriented broadband communication interference suppression method, system, equipment and medium, and relates to the technical field of aeronautical communication and navigation.The method comprises the steps that at a receiving end, interference detection based on continuous variance rejection is conducted on received OFDM frequency domain signals, an interference detection threshold is dynamically set, and interfered subcarriers are recognized; at a transmitting end, an anti-interference OFDM signal is generated by adopting a frequency diversity mode, and interference suppression is performed at a receiving end by utilizing a selection and combination method so as to recover a signal at the transmitting end; a compressed sensing model is constructed by using empty subcarriers in received signals, DME pulse interference signals are reconstructed based on the compressed sensing model, and DME interference is eliminated in a time domain. According to the method, the characteristic that a civil aviation route is fixed is fully utilized, the cognitive radio technology is adopted, the purpose of eliminating in-band interference is achieved through in-band interference detection and diversity suppression, and the influence on a DME system is reduced by adopting a boundary optimization interference elimination algorithm.

A communications circuit includes a first circuit block and a second circuit block. The first circuit block includes a first splitter, a first signal path coupled to a first output of the first splitter, a second signal path coupled to a second output of the first splitter, and a first switch configured to couple the second signal path to a third signal path or to couple a fourth signal path to the third signal path. The second circuit block includes a second splitter, a fifth signal path coupled to a first output of the second splitter, a sixth signal path coupled to a second output of the second splitter, and a second switch configured to couple the sixth signal path to the third signal path or to couple a seventh signal path to the third signal path. The third signal path extends between the first and second circuit blocks.

The invention discloses an ATN B2 application system and method for civil aviation broadband communication, and belongs to the technical field of aviation broadband communication.The system comprises a user management module, a contract management module, a message management module, a data receiving and transmitting module and an interface operation module. The feasibility of an air-ground broadband communication system based on the ATN B2 standard is developed and verified; a set of relatively complete and efficient aviation broadband communication system and a corresponding method are developed by integrating a current data transmission network and a communication monitoring function design scheme.

The invention discloses an equipment working condition sensing signal wireless transmission method based on an ultra wide band and an electronic device, the method is applied to an ultra wide band signal sending end, and the method comprises the following steps: in a current superframe period, after waiting for a first waiting duration, sending a first data message of the ultra wide band signal sending end; if the second data message is received, determining a sending end timestamp synchronization source number of the next super-frame period, the last synchronization time of the sending end of the next super-frame period and the current timestamp of the sending end of the next super-frame period; and generating a to-be-sent data message of the ultra-wideband signal sending end of the next super-frame period based on the sending end timestamp synchronization source number of the next super-frame period, the latest synchronization time of the sending end of the next super-frame period, the current timestamp of the sending end of the next super-frame period and the sensor data frame of the next super-frame period. Therefore, ordered transmission and high-reliability receiving during multi-node ultra-wideband communication are realized.

Examples are provided that relate to satellites utilizing both a narrowband communication channel and a broadband communication channel. One example provides a satellite comprising narrowband communication hardware configured to communicate on a control plane over a narrowband communication channel using an omnidirectional antenna. The satellite further comprises broadband communication hardware configured to communicate on a data plane over a broadband communication channel using a beamforming antenna.

The invention discloses a broadband multichannel amplitude-phase error real-time compensation and synthesis method and system, relates to the technical field of broadband communication, and ensures that the amplitude-phase error of a full frequency band can be detected by injecting a broadband standard pilot signal which is completely matched with the bandwidth of a working signal; the standard pilot signal and the working signal are transmitted in the same path, and the amplitude-phase change of the standard pilot signal can truly reflect the error state of the working signal, so that the problem that the narrow-band pilot cannot cover the full-band error is solved; by monitoring the amplitude-phase error change rate, the updating period of compensation parameters is adaptively adjusted, and it is ensured that the compensation response speed is always higher than the error change speed; a real-time compensation parameter is generated based on the dynamic amplitude-phase error spectrum, so that the problem of lag failure of an offline parameter is avoided; a multi-frequency-point parallel processing mechanism is adopted, a broadband working signal is decomposed into a plurality of frequency components to synchronously execute amplitude-phase adjustment, the adjustment time consumption is consistent with that of a single-path signal, and compared with a traditional serial adjustment mode, the efficiency is improved, and the real-time processing requirement of the broadband signal is met.

The invention relates to a vehicle sentry mode implementation method and device, equipment and a storage medium, and the method comprises the steps that a sentry mode electronic control unit awakens an ultra-wideband communication module under the condition that a vehicle enters a sentry mode, and controls the electronic control unit to enter a dormant state; receiving detection data returned by the ultra-wideband communication module, and judging whether the vehicle is in a first environment state or not according to the detection data; the detection data is used for indicating whether a target object exists in a preset range of the vehicle; and under the condition that the vehicle is in the first environment state, the vehicle is controlled to exit the dormant state, first environment data of the vehicle are collected, and abnormal event monitoring is conducted based on the first environment data. And after the vehicle enters the sentry mode, the sentry mode electronic control unit enters a dormant state, the ultra-wideband communication module is awakened to carry out environment monitoring, and the sentry mode electronic control unit is awakened until it is detected that the vehicle is in the first environment state, so that the overall power consumption of the sentry mode is reduced.

The invention belongs to the technical field of digital signal processing, and particularly relates to a low-complexity segmented filtering method based on a bilateral overlap-save method in a broadband communication system. Aiming at the problem of realizing a large-scale finite impulse response filter in a hardware platform with a limited Fourier transform size, the method comprises the following steps of: dividing a long filter into a plurality of sub-segments and respectively performing frequency domain representation; the method comprises the following steps: performing bilateral overlapping storage on input signal blocks, performing fast Fourier transform, introducing phase shift in a frequency domain to realize time shift, further accumulating frequency domain product results of each filter section and a signal block, and finally obtaining filtering output only through one-time inverse fast Fourier transform. According to the method, the inverse fast Fourier transform operation times are remarkably reduced, the calculation complexity and the storage requirement are greatly reduced, the filtering performance is kept, meanwhile, excellent hardware friendliness is achieved, and the method is particularly suitable for occasions needing an ultra-long filter, such as optical fiber communication dispersion compensation processing.

According to a first aspect of the present disclosure, there is provided an ultra- wideband communication node, comprising: an ultra-wideband communication unit configured to transmit one or more messages to a plurality of external responder nodes, and to receive one or more responses from the responder nodes; a processing unit configured to encrypt the messages using a common cryptographic session key, wherein the common cryptographic session key is a key shared between the ultra-wideband communication node and all of the external responder nodes; wherein the processing unit is additionally configured to decrypt the responses and / or to encrypt further messages to the responder nodes using responder-specific cryptographic session keys, and wherein each individual key of the responder-specific cryptographic session keys is a key shared between the ultra-wideband communication node and one of the external responder nodes.

The invention relates to the technical field of wireless, and provides a cavity-backed circularly polarized antenna. The cavity-backed circularly polarized antenna comprises a resonant cavity, the top layer of the resonant cavity is etched with a radiation structure, and the radiation structure is used for generating an inherent circularly polarized resonance point; at least one resonant structure is arranged in the resonant cavity, the at least one resonant structure is used for generating an additional circularly polarized resonant point, and the at least one resonant structure is electromagnetically coupled with the radiation structure, so that the inherent circularly polarized resonant point and the additional circularly polarized resonant point interact to widen the circularly polarized bandwidth. According to the invention, the axial ratio bandwidth is effectively expanded so as to meet the requirements of a modern broadband communication system.

The invention discloses an unmanned aerial vehicle control method, electronic equipment, a storage medium and a system. The method comprises the following steps: acquiring state data and environment data of an unmanned aerial vehicle through a flight control module; the state data and the environment data are transmitted to an edge computing power module through a first communication link, and the first communication link is a broadband communication link; the state data and the environment data are processed through an edge computing power module, and a decision instruction is generated; the decision instruction is sent to a flight control module through a second communication link, and the second communication link is a real-time communication link; and executing the decision instruction through the flight control module to drive an execution mechanism of the unmanned aerial vehicle.

The present disclosure provides a method by which an electronic device classifies a pose by using a UWB signal. The method of the present disclosure may comprise the steps of: using a trained first CNN model so as to acquire first prediction data for classifying whether a signal corresponding to a UWB CIR is a LOS signal or an NLOS signal on the basis of UWB CIR data; using, if the signal is classified as the LOS signal, a trained second CNN model so as to acquire second prediction data for classifying a pose on the basis of sensor data corresponding to the UWB CIR data; using, if the signal is classified as the NLOS signal, a trained third CNN model so as to acquire third prediction data for classifying the pose on the basis of the sensor data corresponding to the UWB CIR data; using a first filtering method so as to filter at least two from among the first prediction data, the second prediction data, and the third prediction data; and classifying the pose on the basis of the filtered data.

The invention discloses a service sending method, a service receiving method and a related device based on a narrowband base station, relates to the field of communication, and specifically, a terminal user unit supporting broadband communication and narrowband communication can send a communication service according to a service type and broadband and narrowband network conditions monitored by dual networks when sending the communication service. And selecting a target network and sending the communication service through the target network. Compared with a scheme in which a narrowband network bears all services, the method and the device have the advantages that the purpose of sending different types of services by using different networks can be achieved, and on the basis, when the terminal needs to send a certain communication service, even if the terminal exceeds the coverage range of the narrowband network or narrowband channel resources are completely occupied, the terminal can send the communication service. And the terminal user unit can still use the available broadband network to establish communication, so that the limitation of limited coverage area of the narrowband private network and limited narrowband network resources on the terminal service is broken through to a certain extent.

The invention discloses a multi-dimensional bee colony broadband communication system and method based on space-time, the system comprises a space-time electromagnetic spectrum sensing avoidance suppression module, a self-adaptive channel interference resistance module and an intelligent cooperative channel repair module, the bee colony system designs a communication integrated link, according to different interference sources, the communication integrated link can be matched with the communication integrated link, and the communication integrated link can be matched with the communication integrated link. And the space-time electromagnetic spectrum sensing avoidance suppression module monitors and identifies an interference source environment in a space domain, a time domain and a channel frequency offset, correspondingly extracts interference source characteristics, and cooperatively monitors and adjusts navigation and communication interference at the same time. An interference area, an interference frequency band and an interfered signal segment are determined by analyzing an interference source, a channel navigation integrated link dynamically adjusts a broadband communication modulation coding type and dynamically adjusts a considerable navigation information strategy according to the interfered strength, and meanwhile, an intelligent interference database training model is adopted to identify the interference type, so that the channel navigation integrated link is optimized. An interfered signal is intelligently repaired by adopting a mode of composite synthesis to counteract the interference signal, the channel navigation anti-interference capability of the bee colony unmanned aerial vehicle cluster is improved through a series of measures, and an effective data analysis and performance evaluation basis is provided for a subsequent communication anti-interference experiment of the unmanned aerial vehicle cluster.

Methods, systems, and devices for wireless communications are described. The described techniques may enable a user equipment (UE) prevent a baseband processing duration associated with an energy efficient scheduling mode of one or more wideband communication resources from overlapping with one or more uplink slots reserved for uplink communications. For example, the UE may refrain from entering the energy efficient scheduling mode for a configured duration or until the UE transmits one or more uplink messages in the one or more uplink slots. In some examples, the UE may determine whether to enter the energy efficient scheduling mode based on a priority associated with the uplink messages or based on a capability of the UE to perform uplink and downlink communications in different power states.

The invention belongs to the field of 6G wireless communication, and particularly relates to a low-complexity near-far field broadband millimeter wave flux-inductance-calculation integrated beam forming method. Different from a near-field communication, sensing and calculation integrated system focused on a single-antenna receiving user in the prior art, the invention provides two schemes, namely a full-digital beam forming scheme suitable for the near-field and far-field broadband communication, sensing and calculation integrated system and a hybrid beam forming scheme based on a multi-beam technology, by optimizing a mean square error calculated in the air, and the first scheme is a full-digital beam forming scheme suitable for the near-field and far-field broadband communication, sensing and calculation integrated system. Compared with the first full-digital scheme, the second multi-beam hybrid beam forming scheme can reduce the overhead of a radio frequency link and can also effectively reduce the calculation complexity of the algorithm. Simulation experiments show that benefited from the proposed approximate channel model with relatively high precision, the hybrid beam forming scheme suitable for the far and near field broadband sensing calculation integrated system, provided by the invention, has good performance and extremely low calculation complexity, and is suitable for practical application scenarios.

A method for providing a service through ultra-wide band (UWB) communication is provided. The method by a UWB device includes receiving, from an initiator anchor, a first UWB message initiating a ranging procedure, receiving, from a plurality of responder anchors, a plurality of second UWB messages transmitted in response to the first UWB message, receiving, from the initiator anchor, a third UWB message transmitted in response to the second UWB message, receiving, from the plurality of responder anchors, a plurality of fourth UWB messages transmitted in response to the third UWB message, and performing downlink time difference of arrival (DL-TDoA)-based localization based on the first UWB message, the second UWB message, the third UWB message, and the fourth UWB message.

The invention discloses a beam dispersion suppression method for rate splitting assisted near-field broadband communication, and belongs to the technical field of wireless communication and novel multiple access. The method comprises the following steps: S1, based on spherical wave propagation characteristics, establishing a channel model of a near-field uniform linear array; s2, providing a hybrid beamforming architecture based on a real-time delayer to replace a traditional phase shifter assisted hybrid beamforming architecture; s3, constructing a signal transmission and decoding model based on a coding and decoding principle of a rate splitting multiple access technology; s4, designing a two-stage optimization algorithm, and performing joint optimization on a real-time delayer parameter, a phase shift matrix, a digital beam forming matrix and a common rate allocation variable so as to effectively compensate a space broadband effect; according to the method provided by the invention, beam dispersion can be effectively suppressed; the hardware complexity is remarkably reduced, and meanwhile, the transmission performance close to all-digital beam forming is achieved.