500results about How to "Improve communication performance" patented technology

The invention relates to the technical field of communication optimization, in particular to a wireless communication method and system of a vehicle diagnosis system. The method comprises the following steps: identifying a plurality of signal sources in an environment and three-dimensional space data of a current position of a vehicle; performing scene interference intensity comprehensive evaluation on the plurality of signal sources in the environment to obtain a current scene interference intensity evaluation value of the vehicle; environment obstacle space layout analysis is carried out on the three-dimensional space data of the current position of the vehicle, environment three-dimensional modeling is carried out, and a vehicle environment three-dimensional point cloud model is constructed; signal multi-path propagation evolution is carried out according to the current scene interference intensity evaluation value of the vehicle and the vehicle environment three-dimensional point cloud model, and optimal signal frequency band analysis is carried out, so that optimal signal frequency band parameters are extracted; and carrying out dynamic transmission frequency modulation and signal adaptive coding based on the optimal signal frequency band parameter, and constructing a dynamic signal transmission strategy. According to the invention, efficient and stable wireless communication is realized, and the vehicle-mounted communication performance is improved.

The invention relates to the technical field of smart power grids, in particular to a communication link switching method of a heterogeneous network, which comprises the following steps: constructing a network link quality weighted evaluation model for a cellular mobile network, a narrowband Internet of Things and a Wi-SUN network; the communication link quality of different types of networks is monitored and evaluated according to the real-time link quality evaluation parameters and the network link quality weighted evaluation model, so that the quality condition of the current communication link can be intelligently identified; moreover, when the link quality of any network is lower than the preset threshold value, the method can quickly trigger the switching action of the communication link, and the uplink communication link of the gateway is switched from the network with poor quality to the network with better quality, so that the stability and the reliability of the communication link are remarkably improved, and the communication efficiency is improved. And the problem of communication interruption or data loss caused by poor network quality is effectively avoided, so that the overall network communication performance is optimized, and the continuity and reliability of data transmission are ensured.

The invention relates to the technical field of carrier communication, in particular to a multichannel power line carrier communication system which comprises a data acquisition module, a first determination module, a second determination module, a judgment module, a selection module, a sending module and a correction module. According to the invention, through an accurate data acquisition and real-time determination mechanism, complex environment changes in a power network can be effectively dealt with, stability and high efficiency of communication are ensured, channels with optimal parameters such as signal strength, noise, delay and the like are optimized through multi-stage screening and determination, channels with relatively large interference and noise are effectively avoided, and the communication efficiency is improved. Meanwhile, the correction module can adjust the intensity threshold value in real time, it is guaranteed that the system still maintains excellent communication performance when the number of channels fluctuates and the network load changes, and the problems that due to the fact that the attention degree of the influence of real-time environment changes on signal quality is low, channel selection is inaccurate, and verification results are deviated are effectively solved.

The invention discloses a wireless emergency command broadcasting system and method based on artificial intelligence, and the method comprises the following steps: S1, determining the role of a user in an emergency scene through the wireless identity authentication of terminal equipment; s2, acquiring the specific position of each terminal user through a wireless network in real time, and sensing the surrounding environment information of the user; s3, generating a personalized emergency instruction by using a model based on the combination of the graph attention network and the generative adversarial network; s4, a priority optimization algorithm based on hierarchical reinforcement learning is adopted, and the system dynamically adjusts the priority of the broadcast content; s5, a real-time feedback mechanism is established, and the system dynamically adjusts an emergency instruction and a broadcast strategy according to feedback information of a user through a wireless communication technology; and S6, the emergency instruction is pushed to the user terminal, and optimized pushing is carried out according to the characteristics of different users. According to the method, artificial intelligence and wireless communication technologies are fully utilized, personalized emergency instructions are dynamically generated, and the method has the advantages of accuracy, high efficiency and real-time adaptation.

The invention belongs to but not limited to the technical field of unmanned aerial vehicle communication, and discloses a cooperative detection method and system in an unmanned aerial vehicle communication and sensing integrated network, an unmanned aerial vehicle communication and sensing integrated system is constructed, and a base station and a detection unmanned aerial vehicle jointly execute a detection task; in a cooperative detection scene, establishing an unmanned aerial vehicle communication and sensing signal transmitting and receiving signal model; according to a maximum likelihood criterion, sensing data fusion is carried out on the detection sets of the base station and the unmanned aerial vehicle by adopting an EKF algorithm; mathematical modeling is carried out on the maximization problem of the reachable communication rate; the communication performance is enhanced by jointly optimizing the trajectory of the unmanned aerial vehicle and a beam forming algorithm, and the optimization problem of maximizing the communication rate is solved. According to the invention, the problems of high maneuverability, miniaturization and high possibility of being blocked by buildings of the black flight unmanned aerial vehicle can be solved, the sensing accuracy is effectively improved by using communication fusion sensing information, the cooperative sensing distance is increased, and the detection performance is enhanced.

The invention discloses a method for estimating the transmittance of a time-varying channel based on a frequency division multiplexing pilot frequency, and aims to solve the problem that the existing method for estimating the transmittance by adopting average transmittance does not have the capabilities of timely feedback and dynamic adjustment. The method comprises the following steps of: measuring a regular position component and a regular momentum component of a received signal by receiving a quantum signal and a pilot signal of frequency division multiplexing in a local local oscillator continuous variable quantum key distribution system generated by a transmitting end in real time; compensating phase noise caused by frequency offset and channel jitter due to different center frequencies of two independent lasers at a receiving end and a transmitting end by using a frequency offset compensation and phase recovery algorithm, and performing band-pass filtering to obtain a recovered pilot signal; and calculating the power ratio of the obtained pilot signal to the pre-calibrated pilot signal at each moment to obtain the time-varying free space transmittance. The performance change of the system in different time periods can be accurately reflected, the communication performance of the CVQKD system can be optimized, the success rate of key transmission can be improved, and the adaptability and robustness of the system can be improved.

The invention provides a communication perception integrated beamforming method and system for suppressing distance-angle side lobes, and the method comprises the steps: enabling a base station to communicate with a plurality of users under a digital beamforming ISAC architecture, and carrying out the detection of an air target in a self-transmitting and self-receiving mode at the same time; determining a sensing channel model and a communication channel model to obtain a communication receiving signal at each user position and a sensing receiving signal scattered back to the base station from the target; calculating to obtain the SINR of each user; a distance-angle-Doppler three-dimensional perception fuzzy function based on a digital beam forming ISAC architecture is obtained; extracting an expression of an integral sidelobe of a distance-angle dimension; according to the communication index, the sensing index and the integral sidelobe value in the preset distance-angle sidelobe area, a beam forming matrix of the ISAC system is designed in a joint optimization mode; auxiliary variables are introduced to convert the problem of optimizing the beam forming matrix into the problem of optimizing a covariance matrix of the beam forming matrix, and a feasible solution of the joint design problem is obtained.

The invention discloses an Internet of Things equipment control method and device, communication equipment and a readable storage medium, and belongs to the technical field of communication, the Internet of Things equipment control method comprises the steps that a first network element receives a first control request message, and the first control request message is used for requesting first control over Internet of Things equipment; the first network element sends first information; wherein the first information is used for at least one of triggering acquisition of identification information of the Internet of Things equipment and triggering first control on the Internet of Things equipment.

The invention discloses a large-depth pressure-resistant communication antenna of an unmanned underwater vehicle and the underwater vehicle, and belongs to the technical field of underwater vehicles, the antenna comprises an antenna shell, a pressure-resistant cabin body and a fin-shaped component, the pressure-resistant cabin body is a component forming a cabin body segment of the underwater vehicle, and the fin-shaped component is a fin-shaped component. The antenna shell comprises a radial supporting part fixed to the pressure-resistant cabin and a shell part fixed to the top end of the radial supporting part, the fin-shaped component is fixed to the radial supporting part, an antenna unit is installed in the shell part, and a wireless communication function unit connected with the antenna unit is arranged in the pressure-resistant cabin. The large-depth pressure-resistant communication antenna of the unmanned underwater vehicle has the advantages of being excellent in communication quality, high in pressure resistance, optimized in size, high in space utilization rate, stable and reliable for a long time and the like, and can meet operation requirements in a deep sea environment.

The invention provides a communication method of multi-application communication based on a serial interface and a storage medium, the communication method is applied to a protocol stack of multi-application communication, a hardware layer of the protocol stack uses an asynchronous full-duplex serial interface, and the communication method comprises the following steps: establishing a point-to-point transmission channel between applications through the asynchronous full-duplex serial interface; a sending end sets sending numbers for data packets, the data packets are packaged into data frames through a data link layer of a protocol stack, and the data frames are sequentially sent through a transmission layer of the protocol stack according to priorities of point-to-point transmission channels of different applications in all the applications; and the receiving end receives the data frame and verifies the transmission integrity of the data packet according to the sending number. The technical problems that the design of an existing communication method in a multi-chip ECU board is complex, and communication of multiple applications in two chips through one interface cannot be achieved are solved.

The invention discloses a waterproof and corrosion-resistant photoelectric composite cable, and belongs to the technical field of communication cables. The waterproof and corrosion-resistant photoelectric composite cable comprises a cable core composed of an optical unit and an electric unit, aramid yarn, an inner protective layer, a waterproof layer, an anti-corrosion layer and an outer sheath, the optical unit comprises an optical fiber and a protective sleeve outside the optical fiber, and the electric unit comprises a conductor and an insulating layer outside the conductor; the aramid yarn and the cable core are twisted in a spiral mode and wrapped by an inner protection layer in an extruded mode, the inner protection layer is wrapped by a water blocking layer, the water blocking layer is wrapped by an anti-corrosion layer, and the anti-corrosion layer is wrapped by an outer sheath. The inner protective layer is made of a waterproof high-temperature-resistant insulating polyurethane composite material; the outer sheath is made of a flame-retardant corrosion-resistant PUR composite material; the waterproof and corrosion-resistant photoelectric composite cable is simple in structure, has high strength and high toughness, has excellent waterproofness, corrosion resistance, aging resistance, high temperature resistance, wear resistance and flame retardance, and still keeps better use performance and longer service life in harsh environments such as underwater or underground.

The invention relates to the technical field of 5G communication modules, in particular to a 5G communication module with a self-adaptive frequency spectrum and a use method of the 5G communication module. Comprising a spectrum sensing and identification module, a spectrum measurement and reconstruction module based on compressed sensing, a self-adaptive spectrum selection and dynamic spectrum allocation control module, a dynamic channel modeling and prediction module, a comprehensive optimization algorithm module and a feedback-assisted channel estimation control module. Wherein the spectrum sensing and recognition module adopts a deep learning algorithm to improve the precision and speed of spectrum sensing, and meets the requirements of 5G high data rate and low delay; the specific implementation mode comprises a convolutional neural network (CNN) structure, the convolutional neural network is adopted for spectrum sensing, and the spectrum state can be accurately and rapidly recognized in a complex dynamic environment; by training a large amount of spectrum data, the CNN can extract spectrum features and effectively distinguish target signals and interference signals, and the precision and speed of spectrum sensing are significantly improved.

The invention discloses an unmanned vehicle cluster control method and system based on dynamic master-slave switching. The method comprises the following steps: initializing unmanned vehicles, selecting a formation, and determining the initial position and speed of each unmanned vehicle; state data of the unmanned vehicle are collected and monitored, a fitness function value is calculated, and whether main vehicle switching needs to be carried out or not is judged; establishing a multi-layer fitness evaluation method, identifying a vehicle which is most suitable for being used as a new main vehicle, and generating a switching preparation signal; the original main vehicle and the candidate main vehicle are coordinated, and role conversion is carried out through smooth transition; and after master-slave switching is completed, readjusting the formation pattern based on an obstacle avoidance and regression algorithm of a dynamic window. The system comprises a communication architecture module, an initialization module, a decision module, a switching preparation module, a smooth transition module and an adjustment module. According to the invention, by introducing a flexible switching mechanism and a self-adaptive control strategy, the problems of main vehicle selection and calculation load transfer of the current unmanned vehicle cluster are solved.

The invention relates to the field of interphone communication, and discloses a dual-mode interphone communication effect evaluation and optimization method based on multi-feature fusion, which comprises the following steps: carrying out data preprocessing on communication signals of different dual-mode interphones, extracting features of the communication signals, carrying out feature evaluation on the features of the communication signals, and calculating the communication effect of the dual-mode interphones; the communication effect of the interphone is judged, and finally the communication effect of the interphone is optimized according to the stability of mode switching between the interphones. According to the method, the communication effects of different communication modes of the dual-mode interphone are evaluated and optimized in a multi-feature analysis mode, so that the communication effect of the interphone is kept at a normal level and is not influenced, and the communication efficiency is improved.

The invention provides a PWM-based fire-fighting power two-bus power supply and communication method and device, and relates to the technical field of fire-fighting monitoring, and the method comprises the steps: taking a PWM voltage signal sent by a master station to a slave station as a downlink signal, taking a PWM current signal sent by the slave station to the master station as an uplink signal, representing the signal logic based on the combination of PWM frequency and PWM duty ratio, and carrying out the communication of the PWM frequency and the PWM duty ratio; the time length of a timer is defined as a unit pulse width count value according to the minimum pulse width of PWM, a comparison table containing a hexadecimal number, a binary number, a PWM frequency, a PWM duty ratio, a PWM low-level pulse width count value, a PWM high-level pulse width count value and a PWM period value is made, and coding and code sending are carried out based on the comparison table by using a single-byte table look-up method. And decoding and receiving codes based on the comparison table by using a single-byte offset compression look-up table method. Bidirectional PWM communication and PWM waveform coding are adopted, the overall loading capacity of the bus is improved, the bus distance is increased, the error problem can be solved through a verification mechanism based on digital communication of PWM coding, and the communication anti-interference capacity is improved.

The invention provides a communication control method and device, equipment, a chip and a medium, and the method comprises the steps: transmitting first information, the first information at least comprises a request type, the request type is used for requesting switching from a first connection to a second connection, and the first connection comprises a data session; receiving second information, the second information being used for indicating whether the maintenance of the data session is supported or not; and determining whether to switch from the first connection to the second connection according to the second information. The technical problem that in the prior art, the continuity of data sessions cannot be ensured, and consequently the communication effect is poor is solved.

The invention provides a communication method and device, and a computer readable storage medium, and the communication method comprises the steps: reporting first information, the first information comprising information related to the condition switching of a main cell and / or the condition adding / updating of a main cell and an auxiliary cell in a dual-connection scene. The invention provides a scheme for assisting the terminal equipment to perform dual-connection condition switching, so that the network equipment can analyze problems existing in the existing dual-connection condition switching based on the first information, the dual-connection condition switching is optimized, and the terminal equipment can smoothly complete the dual-connection switching later.

The invention discloses an industrial control system data transmission method and device based on RDMA, and belongs to the technical field of communication. According to the method, an RDMA transmission engine is used in the data information transmission process between a sender and a receiver, and a data buffer area is preset in the sender in advance, so that a network card can directly write in or read the buffer area specified by a user in the data transmission process, and unnecessary overhead in the data transmission process is reduced; according to the method, the memory registration area cache is introduced into the RDMA transmission engine, so that registered memory resources can be reused, the number of times and expenditure of memory registration are reduced, and the overall performance of the RDMA is improved.

The invention relates to the field of telecommunication, in particular to a distributed acquisition and control networking method. The method comprises the following steps: optical distributed acquisition and control host equipment is in communication connection to form an optical distributed acquisition and control host core looped network; the two optical distributed acquisition and control host devices control one slave optical fiber hand-in-hand connection device to perform management and communication dual-machine redundancy between the two optical distributed acquisition and control host devices, and the two optical distributed acquisition and control host devices form an optical distributed control looped network; the slave optical fiber hand-in-hand connected equipment module is linked with the detection equipment, and the data acquisition efficiency of the optical distributed control ring network is calculated; judging whether one of the optical distributed acquisition and control host equipment is in a disconnected state or not; and calculating the time delay of the slave optical fiber hand-in-hand connection equipment communication connection detection equipment. The problem that monitoring and control are directly influenced by communication interruption among equipment in a part of areas in optical fiber communication is solved; and after the optical distribution type acquisition and control host equipment breaks down, the whole networking cannot work if the dual-redundancy backup is lacked, and the like.

The invention discloses a measurement event processing method and device, electronic equipment and a readable storage medium, and belongs to the technical field of communication. The method comprises: when service data of a terminal satisfies an abnormal condition, the terminal acquires a first signal measurement value corresponding to a first measurement event, the first signal measurement value comprising at least one of the following items: a signal measurement value of a serving cell of the terminal, and a signal measurement value of a neighbor cell of the serving cell; under the condition that the first signal measurement value does not meet the triggering condition of the first measurement event, the terminal adjusts the first signal measurement value to a second signal measurement value, the second signal measurement value meets the triggering condition of the first measurement event of the terminal, and the triggering condition is used for triggering reporting of a first measurement report; the first measurement report is used for triggering cell handover.

The invention provides electronic equipment which comprises a frame and a first antenna unit, and a first side frame of the frame comprises a target finger lap joint area. The first antenna unit comprises a first antenna radiator and a first feed source which are arranged on the first side frame, one end of the first antenna radiator forms a first grounding end which is grounded, the other end of the first antenna radiator forms a first free end, and the first free end is located between the first grounding end and the top frame of the frame; a first feeding point electrically connected with the first feed source is arranged between the first free end and the first grounding end, the first feed source excites the first antenna radiator to form a first resonance mode supporting a first frequency band, and a target radiation section of the first antenna radiator is a strong current distribution section in the first resonance mode; at least part of the target radiation section is arranged in the target finger lap joint area, and the target radiation section can form medium loading of the first resonance mode when the target finger is in lap joint. According to the electronic equipment provided by the invention, the efficiency in a hand-held scene can be improved.

The invention relates to an interconnection system for a plurality of computing modules and a computing system. A first-level calculation module is constructed by a plurality of calculation modules, then a second-level calculation group is constructed by a plurality of first-level calculation modules, and by parity of reasoning, two or more layers of calculation modules can be constructed. For any hierarchy of calculation modules, the number of the input and output interfaces used for internal communication interconnection of the hierarchy of calculation modules is larger than that of the input and output interfaces used for communication interconnection between the hierarchy of calculation modules.

The invention relates to a communication protocol data serialization method and device, computer equipment, a storage medium and a computer program product. The method comprises the following steps: acquiring service protocol field data corresponding to a service communication request; determining the data length of the business protocol field data; obtaining a communication protocol packet header based on the data length of the service protocol data, and determining the length of a communication protocol packet; distributing the memory with the length of the communication protocol packet to a communication thread of the service communication request; and copying the communication protocol header and the business protocol field data to a memory in a serialization form to obtain serialized communication protocol data. In the embodiment of the invention, the serialization processing of the communication protocol data can be directly carried out on one memory, that is, the serialization processing of the communication protocol data can be completed only through one-time copying, the serialization efficiency of the communication protocol data can be effectively improved, and thus the communication performance is improved.

The invention discloses a dual-mode communication unit frequency modulation method based on an adaptive algorithm, relates to the technical field of communication, and aims to solve the problems that the traditional communication method is prone to signal instability in a special working environment, so that the communication is interrupted repeatedly, the working continuity and safety are influenced, the transmission efficiency is low, and the communication efficiency is low. The method comprises the following steps: acquiring and analyzing environment parameters, and acquiring special working environment parameters; the temperature (T), humidity (H) and electromagnetic interference intensity (E) parameters in a special working environment are acquired through various high-precision sensors, and the sensors are calibrated, so that the communication mode can be automatically adjusted according to the change of the special working environment by accurately acquiring the environmental parameters, comprehensively evaluating the communication quality and flexibly adjusting the communication frequency; the problems of unstable signal and low transmission efficiency of traditional communication in a special environment are solved.

The invention relates to a cell switching method, device and system and electronic equipment, and relates to the technical field of communication. The cell switching method comprises the following steps: broadcasting first position change information of a cell coverage reference point of a current service cell in a first preset time period to a terminal, so that the terminal determines whether to trigger cell switching according to the first position change information; and under the condition that the terminal determines to trigger the cell switching, sending related information of performing the cell switching to the terminal, so that the terminal performs the cell switching according to the related information. According to the technical scheme provided by the invention, relatively large broadcast message updating overhead can be prevented from being introduced.

The invention relates to a communication method, device and system and electronic equipment, and relates to the technical field of communication. The communication method comprises the following steps: determining whether a terminal covered by a satellite network and a ground mobile network has co-frequency interference or not; according to a communication scene of the terminal, generating a communication strategy corresponding to the communication scene, the communication scene being determined according to whether the terminal has co-frequency interference and an access mode supported by the terminal; and issuing the corresponding communication strategy to the terminal. According to the technical scheme, corresponding communication strategies can be determined according to different communication scenes, so that the communication performance is improved.

The invention discloses an antenna oscillator, an antenna and communication equipment, and relates to the technical field of communication. The antenna oscillator comprises a radiation arm, a feeder line and a decoupling branch knot, wherein the radiation arm is connected with the feeder line. The decoupling branch knot comprises a first branch knot and a second branch knot, the first branch knot is parallel to the feeder line, and the end part, close to the radiation arm, of the first branch knot is connected with the feeder line, so that the first branch knot is counteracted with at least part of current of the feeder line. The second branch knot is located on the side, away from the radiation arm, of the first branch knot, is connected with the first branch knot, extends from the first branch knot to the side, away from the feeder line, of the first branch knot, and is perpendicular to the feeder line; therefore, the drop-gain points of other antenna oscillators which generate the common-mode induction current on the antenna oscillator can be moved out of the working frequency band. According to the antenna provided by the invention, the feeder line of the antenna oscillator is connected with the decoupling branch knot, so that the effect of improving the directional diagram parameters of other antenna oscillators generating common-mode induction current on the antenna oscillator can be achieved.

The invention relates to a radio frequency device, a radio frequency system and communication equipment. The radio frequency device is provided with a first transmitting port, a second transmitting port, a tuning control port, a first antenna port used for being connected with a first antenna, and a second antenna port used for being connected with a second antenna. In the radio frequency device, a first transmitting circuit and a second transmitting circuit amplify a radio frequency signal to be transmitted, and a gating-based tuning circuit is correspondingly connected with the output end of the first transmitting circuit, the output end of the second transmitting circuit, a tuning control port, a first antenna port and a second antenna port. And the gating tuning circuit selects to transmit the radio frequency signal output by the first transmitting circuit or the second transmitting circuit through a target antenna connected with the target antenna port, and changes the tuning parameter of the gating tuning circuit according to the received tuning signal, so as to adjust the impedance position of the target antenna connected with the target antenna port. Miniaturization design and energy consumption control are considered, and the overall communication performance is improved.

The invention discloses an Internet of Things electric energy meter Bluetooth communication reliability realization method and system, and relates to the technical field of Internet of Things communication, and the method comprises the steps: an Internet of Things electric energy meter and Bluetooth communication equipment establish connection through a Bluetooth pairing process, carry out identity authentication through a secret key, initialize data transmission, carry out data transmission, and realize communication. In a data transmission process, an error correction and data recovery algorithm is utilized to reduce transmission errors, data during communication is monitored in real time, the monitored data is utilized to establish an intelligent prediction model, the communication quality is predicted, whether the quality meets requirements is evaluated according to the predicted communication quality, and a self-adaptive adjustment algorithm is utilized to adjust communication parameters. And monitoring equipment parameters and security threats in real time, and triggering a key dynamic updating mechanism to periodically update an encryption and authentication strategy according to a monitoring condition. According to the method, the problems of insufficient communication error rate, insufficient communication quality monitoring and prediction, insufficient communication parameter adjustment flexibility and low safety in the prior art can be solved.

The invention discloses a hollow-core optical fiber Kerr effect nonlinear coefficient characterization method, device and equipment and a storage medium, and relates to the technical field of optical communication, and the method comprises the steps: receiving a high-order modulation signal transmitted by a to-be-tested hollow-core optical fiber in a transmitting end, and carrying out the demodulation of the high-order modulation signal, and obtaining a high-order demodulation signal; mapping the high-order demodulation signal into a constellation diagram, and determining the nonlinear phase shift of the high-order demodulation signal in the constellation diagram; based on the nonlinear phase shift of the high-order demodulation signal in the constellation diagram and a pre-constructed Kerr effect nonlinear mathematical model, determining a Kerr effect nonlinear refractive index coefficient of the to-be-tested hollow-core optical fiber; and based on the Kerr effect nonlinear refractive index coefficient of the to-be-tested hollow-core optical fiber, optimizing the communication performance of the to-be-tested hollow-core optical fiber. Through the mode, the mapping points in the demodulated signal constellation diagram are analyzed to determine the nonlinear phase shift, so that the nonlinear refractive index coefficient of the Kerr effect is accurately calculated by utilizing the nonlinear mathematical model and the nonlinear phase shift.