23results about How to "Guaranteed communication quality" patented technology

The invention provides an adaptive modulation switching method for satellite-ground laser communication. The performance of a communication system is improved by using 16QAM (Quadrature Amplitude Modulation) and BPSK (Binary Phase Shift Keying) modulation adaptive switching; the method comprises the following steps: firstly, carrying out polarization code coding on an information sequence, scattering the sequence through an interleaver, and then modulating the sequence through a modulator and sending the modulated sequence to a satellite-ground laser communication channel. An atmospheric turbulence estimation module is introduced at a receiving end, estimated atmospheric channel state information is fed back to a sending end through an estimated value of satellite-ground laser communication atmospheric turbulence intensity, then a modulation mode of the sending end is switched according to a threshold value, and low-time-delay reliable transmission of satellite-ground communication laser communication is achieved.

The invention discloses a 5G network ultra-far coverage method, system and device for marine economy and a medium, and belongs to the technical field of wireless communication, and the method comprises the steps: building a geometric propagation relation based on the earth curvature according to the hanging height of an antenna and the height of a terminal device, and calculating a sight distance coverage distance through a geometric figure formed by a base station antenna, a terminal and the earth center; adaptively selecting a working frequency band according to the sight distance coverage distance and the service bandwidth requirement, determining an antenna gain requirement and a beam width requirement according to the wavelength characteristic of the working frequency band, and selecting an antenna; when a time division duplex system is adopted, the cyclic prefix length and the guard interval length are configured according to the propagation time delay so as to expand the coverage distance; and when the frequency of the working frequency band is relatively high, a multi-cell joint receiving and uplink channel quality enhancement technology is configured. According to the method, the sight distance coverage range is accurately calculated by establishing the geometric propagation model based on the earth curvature, and ultra-long-distance coverage of the sea area is realized through frequency band antenna collaborative optimization and frame structure parameter configuration.

The application discloses a satellite communication power dynamic adjustment method and system, which comprises the following steps: acquiring and analyzing signal monitoring data of satellite communication to determine key signal parameters affecting signal quality; analyzing data of the key signal parameters to determine data characteristics, and evaluating signal quality of the key signal parameters to obtain a signal quality evaluation value; calculating a communication quality evaluation value of the satellite based on the signal quality evaluation values of the key signal parameters; determining a communication quality requirement value of the satellite, and determining a communication quality difference value between the communication quality requirement value and the communication quality evaluation value; determining an adjustment coefficient of real-time communication power of the satellite based on the communication quality difference value, and dynamically adjusting the real-time communication power of the satellite. The application accurately quantifies satellite communication quality by analyzing satellite communication data, and dynamically adjusts satellite communication power by determining an adjustment coefficient through difference analysis, so that fine and progressive power control is realized.

The invention discloses an unmanned aerial vehicle water-air dual-medium adaptive communication optimization method and related equipment. The method comprises the following steps: acquiring unmanned aerial vehicle environment sensing information; determining the current communication medium state of the unmanned aerial vehicle according to the unmanned aerial vehicle environment sensing information; the communication medium state comprises an air state, an underwater state and a water-air interface crossing state; generating a target communication strategy according to the current communication medium state of the unmanned aerial vehicle, and controlling the unmanned aerial vehicle to execute the target communication strategy; the communication strategies comprise an air communication strategy, an underwater communication strategy and a water-air dual-medium communication strategy; and dynamically monitoring the communication link performance index of the unmanned aerial vehicle, and dynamically optimizing the target communication strategy in combination with the environment change information and the communication link performance index. The technical problem that the communication performance of the unmanned aerial vehicle on the water-air interface is sharply reduced can be effectively solved, smooth transition and high-reliability maintenance of the communication link in the double-medium environment are achieved, and the method can be widely applied to the technical field of unmanned aerial vehicle communication.

The utility model discloses a portable Internet of Things gateway, which comprises a host, a plurality of networking interfaces arranged inside the front end of the host, an on-off key arranged on the right side of the plurality of networking interfaces, a power interface arranged on the right side of the on-off key, and a signal enhancement rod arranged at the left front corner of the upper end of the host. According to the utility model, a detachable signal enhancement rod structure is adopted, the signal enhancement rod can be combined into a whole or split into two independent units to be arranged according to the environment, and the signal enhancement rod can be flexibly split and combined according to the requirements; the gateway arrangement flexibility is improved, and the communication quality is ensured. The reinforcing rod can rotate to adjust the direction and can be completely accommodated in the host groove body, so that the device can be rapidly deployed to the optimal signal position, the portable transportation requirement can be met, and the environmental adaptability and the network distribution efficiency of the device are improved.

The application relates to the technical field of cooking utensils, in particular to a gas stove. The gas stove comprises a machine body, an air inlet pipe installed in the interior of the machine body, the air inlet pipe comprising a first air inlet section and a second air inlet section, a support comprising a base, two first supporting legs and a second supporting leg, the ends of the first supporting legs and the second supporting leg away from the base are provided with buckle parts, the buckle parts on the two first supporting legs are respectively connected with the second air inlet section, the buckle part on the second supporting leg is connected with the first air inlet section, and a wireless signal module is installed on the base. The buckle part has an opening for the corresponding air inlet section to pass through, and the minimum width of the opening is smaller than the outer diameter of the corresponding air inlet section. The installation of the wireless signal module is relatively easy, the production cost and production time of the gas stove can be reduced, direct contact or close distance between the wireless signal module and metal parts of the gas stove is avoided, and the communication quality of the wireless signal module is ensured.

Embodiments of the present application relate to the technical field of vehicle communication, and particularly relate to a control method and system of a vehicle antenna and a vehicle device. The method comprises: determining a first satellite elevation angle corresponding to a current positioning position of a vehicle; determining a second satellite elevation angle corresponding to a current body roll angle of the vehicle; determining whether a first difference between the first satellite elevation angle and the second satellite elevation angle is greater than a first threshold value; if the first difference is greater than the first threshold value, determining whether a first signal strength of a currently used antenna is less than a second threshold value; if the first signal strength is less than the second threshold value, determining whether a second signal strength of a currently idle antenna is greater than or equal to the second threshold value; and if the second signal strength is greater than or equal to the second threshold value, switching the currently idle antenna to a use state. The method can select an antenna with a higher current signal strength to receive a satellite communication signal, thereby improving the communication quality of the vehicle device.

This utility model discloses an optoelectronic integrated wiring box, relating to the field of cable installation technology, comprising: a wiring box, wherein a cable mounting rack for cable management is installed inside; the cable mounting rack includes: a U-shaped frame, detachably fixed to the inner wall of the wiring box, with a cable pass-through opening along the length direction at the middle of its bottom end; multiple cable grooves, spaced apart on both sides of the U-shaped frame, for cable separation and clamping; and a protruding part located inside the inner side wall of the U-shaped frame after being clamped by an elastic ball, providing continuous and elastic support for the suspended cable segment from the cable pass-through opening to the cable groove, so that the cable segment does not directly adhere to the bottom wall of the U-shaped frame under its own weight, but forms a continuous air insulation layer, i.e., a heat dissipation gap, between the cable and the bottom wall, thereby ensuring sufficient air convection space and facilitating heat dissipation during cable operation.

This application discloses a method and apparatus for use in a node for wireless communication. A first node receives a first signaling, which is used to determine a first time moment; after the first time moment, it receives a first reference signal. The first signaling is used to indicate a target reference signal; after the first time moment, the target reference signal is used to determine the spatial relationship of transmissions on a target channel, and the first signaling is used to indicate whether the target channel is an uplink physical layer channel or a downlink physical layer channel; whether the target channel is an uplink physical layer channel or a downlink physical layer channel is used to determine whether the first reference signal and the target reference signal are spatially correlated; when the target channel is an uplink physical layer channel and the first reference signal belongs to a first set of reference signals, the first reference signal and the target reference signal are spatially correlated.

The present disclosure provides a laser radar and equipment, the laser radar includes a base; a rotating part, which can move relative to the base; an optical communication assembly, including a first optical communication module and a second optical communication module; one of the first optical communication module and the second optical communication module is configured to emit an optical signal, and the other is configured to receive an optical signal; the first optical communication module is arranged on the rotating part; a support shaft is integrally formed with the base, the center of the support shaft is provided with a cavity between the first optical communication module and the second optical communication module, and the side wall of the support shaft is provided with a through slot; a circuit board is arranged on the base, the circuit board includes a first board part located in the cavity, a second board part located outside the cavity, and a connecting part connecting the first board part and the second board part, the second optical communication module is arranged on the first board part, and the connecting part passes through the through slot; a sleeve is sleeved on the inside or outside of the support shaft. The communication quality can be improved while reducing assembly steps and improving structural compactness.

The invention provides an alternating-current power supply parallel operation communication control method, device and equipment and a storage medium, and relates to the technical field of power supplies, and the method comprises the steps: dividing a plurality of single-phase alternating-current power supply modules into a host or a slave through a first control sub-module in combination with configuration parameters; generating a handshake request signal through a second control sub-module of the host, and sending a handshake request to the second control sub-module of any slave connected with the host by using the Type-C parallel operation line; forwarding the handshake request by using a Type-C parallel operation line through a second control sub-module of the slave, and judging whether the host forms a handshake closed loop with all the slaves or not through a second control sub-module of the host; and if yes, performing data communication control through a second control sub-module of the host and a second control sub-module of the slave according to the combination mode and the phase mode of the alternating current power supply parallel operation system. The alternating current power supply parallel operation communication effect is improved through the alternating current power supply parallel operation system.

The invention relates to a satellite communication link dynamic selection method and system based on multi-step look-ahead optimization, and belongs to the technical field of satellite communication. The invention provides a three-stage progressive satellite selection strategy which comprises a free mode, a greedy avoidance mode and a look-ahead optimization mode. And the switching frequency is minimized while the communication quality (isolation angle threshold) is ensured. The system works in a free mode at ordinary times, and when it is detected that an isolation angle is lower than a threshold value or a shielding risk exists, the system is immediately switched to a greedy avoidance mode and a non-shielding satellite is selected; and if the greedy mode still cannot meet the isolation requirement or the switching times reach the limit, switching to the look-ahead optimization mode, and executing multi-step prediction and optimization calculation. According to the invention, parameter setting can be dynamically adjusted according to service requirements and the environment so as to balance communication stability and switching overhead.

The application provides a communication method and device and a computer readable storage medium. The communication method comprises: sending quality of service (QoS) of at least one link in a multi-hop relay communication link, wherein the QoS of the at least one link is determined according to at least end-to-end QoS. The application provides a scheme capable of splitting the QoS of a service in each link of the multi-hop relay communication link.

Disclosed are a data blind retransmission method and apparatus, a storage medium, and a terminal device. The method comprises: when a sending terminal is remote from a receiving terminal, starting a blind retransmission mechanism to retransmit data to be sent; during retransmission, updating the distance the sending terminal is from the receiving terminal, and counting the number of retransmission times of said data; and according to the updated distance and the number of retransmission times, controlling the retransmission of said data to be sent.

The application provides a satellite communication method and device, a communication load and a storage medium, and relates to the technical field of satellite communication. The method is applied to the communication load of a communication satellite, and comprises the following steps: acquiring first parameter information of a transmitting phased array antenna and second parameter information of a receiving phased array antenna in the same frequency and the same time slot; and then simultaneously providing uplink communication services and downlink communication services for a plurality of terminal devices of a plurality of ground cells based on the first parameter information and the second parameter information. Through the above method, the spectrum efficiency and the time resource utilization efficiency are further improved, the total system capacity is significantly increased, and an effective full-duplex implementation path is provided for high-throughput satellite communication.

The utility model relates to the field of electronic systems, and discloses a keyless entry and one-key start system, which is characterized in that a Bluetooth module is used for replacing a traditional LF (Low Frequency) transmitting module and a traditional RF (Radio Frequency) receiving module at a vehicle end, and a Bluetooth module is used for replacing a traditional antenna and a traditional RF transmitting module at an intelligent key end. The intelligent key is in communication connection and identity recognition with the vehicle end through the Bluetooth module, and the dilemma that a traditional LF radio frequency module is prone to being interfered by the external electromagnetic environment, so that a whole vehicle fails to be unlocked, and a user cannot enter the vehicle is avoided; meanwhile, the Bluetooth module has a frequency modulation and spectrum spreading technology, and can select a frequency band with the optimal signal strength to perform data communication, thereby ensuring the communication quality, improving the user experience, and providing great convenience for the user to enter and exit the vehicle.

The present application relates to the field of wireless communication network and super dense edge computing technology, specifically to an IRS assisted radio frequency charging UD-MEC system task offloading method, comprising: S1: dividing mobile users and base stations into several clusters; S2: calculating the time and energy required for processing tasks; S3: based on IRS assistance, minimizing the total energy consumption of mobile users in several task scenarios, the task scenarios including a regular scenario, a scenario that can only be divided into several fixed threads or methods, and a complex scenario that can only be divided into several fixed threads or methods, and some sub-tasks can only be processed locally; S4: jointly considering the service cache problem of the base station, minimizing the total energy consumption of the mobile user; S5: selectively using millimeter wave, terahertz frequency band, deploying UAV as a movable base station, and minimizing the energy consumption of the UAV. The technical scheme can effectively reduce the energy consumption of mobile user task offloading.

The application discloses an antenna unit and an antenna array, wherein the antenna unit comprises a plurality of radiation oscillators, at least one feeding part and a switch device, the radiation oscillators are arranged along a longitudinal first direction; the feeding part is electrically connected with the radiation oscillators through a feeding channel; and the switch device is arranged on the feeding channel and is arranged to be capable of controlling the on-off between at least one of the radiation oscillators and the feeding part. The application aims to integrate the communication function and the signal sensing function of a communication network to realize integrated communication and sensing.

The invention discloses a multi-unmanned aerial vehicle calculation unloading method and system based on height perception. The method comprises the following steps: constructing a multi-node auxiliary mobile edge calculation system model; designing a state space containing a dynamic flight height; a highly-perceived multi-agent reinforcement learning algorithm is realized; the task unloading proportion, the user scheduling strategy and the flight height and angle of multiple nodes are jointly optimized; and dynamically adjusting the flight height according to the node energy state. By introducing a dynamic height perception and joint optimization mechanism, three beneficial effects are realized: firstly, the system can intelligently adjust the height of the unmanned aerial vehicle according to a real-time channel condition and an energy state, the flight energy consumption is remarkably reduced while the communication quality is ensured, and the total cost of the system is reduced by 15-25%; and secondly, through cooperative unloading and trajectory planning based on multi-agent reinforcement learning, the cooperative efficiency of multiple unmanned aerial vehicles is improved, and the task processing rate is improved by 20-30%.

The embodiment of the invention provides a multi-mode satellite communication link intelligent selection method and system based on deep learning, and relates to the technical field of deep learning. An in-orbit satellite communication node receives a link detection pulse sequence which is sent by a ground gateway station and contains different modulation and coding strategy identifiers; analyzing to obtain an atmospheric attenuation disturbance parameter and an ionospheric scintillation effect parameter, inputting the atmospheric attenuation disturbance parameter and the ionospheric scintillation effect parameter into a deep learning feature extraction network to generate a multi-dimensional link state feature tensor, combining service type priority coding, distributing candidate link weight coefficients through an attention mechanism, and constructing a sorting list; and according to the weight coefficient, sequentially selecting the main communication link and the standby communication link, and generating a link switching instruction. According to the invention, the accuracy and reliability of satellite communication link selection are improved, and the communication quality is guaranteed.

This invention discloses a multipath-resistant LoRa communication method combining block interleaving and matched filtering, belonging to the field of Internet of Things (IoT) technology. The steps are as follows: Block interleaving reduces the amplitude of strong multipath signals by dividing the signal into equal blocks and then swapping the order of these blocks, followed by deinterleaving at the receiver; matched filtering increases the signal-to-noise ratio (SNR). Matched filtering is selected based on amplitude criteria, first filtering the preamble symbol, then performing circular correlation operations using the preamble and data symbols. This method effectively resists multipath interference and improves the bit error rate performance of LoRa communication. It is low in complexity, low in power consumption, and simple to implement, making it suitable for multipath-intensive indoor and outdoor communication scenarios and shallow water acoustic communication.