2017 results about "Communication quality" patented technology

A method (700) by a user equipment, UE, (112) for communicating in a restricted zone includes determining (702) a location of the UE in relation to the restricted zone. Based on the location of the UE in relation to the restricted zone, the UE takes (704) at least one action to maintain a level of communication quality of the UE.

The invention relates to the technical field of mine production operation management, in particular to a mine production operation intelligent decision-making system based on multi-source heterogeneous data fusion. A data preprocessing module; a data fusion modeling module; an intelligent decision module; and a decision execution feedback module. In the scheme, an edge computing terminal is deployed through a data acquisition unit, a multimode communication technology is integrated, data of an underground sensor, electromechanical equipment and the like are accessed in real time, and the data transmission reliability is ensured through a communication quality evaluation formula; the business system interconnection unit maps heterogeneous fields of systems such as ERP, WMS and the like into global unified business keys by means of semantic middleware, and semantic ambiguity is eliminated. The data preprocessing module integrates the dispersed data into a standardized data set through intelligent cleaning, format conversion and three-dimensional association, and provides data support for decision making.

The invention relates to an unmanned aerial vehicle group-oriented sensing communication integrated network multi-resource joint scheduling method, and belongs to the technical field of wireless communication, and the method comprises the steps: building a system model of multiple UAV-ISAC tasks, and defining a joint optimization problem; extracting spatio-temporal features from the dynamic heterogeneous graph in which the unmanned aerial vehicle, the user and the sensing target are abstracted as nodes and the relationship is abstracted as edges; taking the features as input, and adopting a layered multi-agent reinforcement learning architecture to solve the joint optimization problem on line; in the architecture, resource allocation and trajectory planning actions are generated through cooperation of a central Actor and all unmanned aerial vehicle Actors, and system performance is evaluated by a central Critic; constructing a multi-target weighted reward function, stabilizing a training process by combining experience playback and a Mini-batch sampling mechanism, and updating network parameters in parallel; and obtaining an optimal resource allocation and unmanned aerial vehicle trajectory strategy through training. The sensing performance is improved, the communication quality is guaranteed, and the defects in the aspect of dynamic resource scheduling in the prior art are overcome.

The invention provides a low-orbit satellite communication terminal network performance dynamic tuning method and system, and relates to the technical field of low-orbit satellite communication. Comprehensive data such as relative movement of a satellite and a terminal and signal transmission loss are acquired; preprocessing the integrated data, inputting the preprocessed integrated data into a time sequence prediction model containing LSTM and Transform, generating a signal quality and intensity index sequence and a link stability level in a future preset time window, and carrying out dynamic optimization based on the generated indexes, including adjusting a terminal modulation mode according to the signal quality; combining the link stability and the signal strength to aggregate the link, and optimizing the switching opportunity and path; allocating resources according to the signal strength and the service characteristics; and optimizing the energy consumption according to the relative motion and the business characteristics. Through accurate prediction and multi-dimensional adjustment and optimization, the communication efficiency and reliability of the low-orbit satellite communication terminal network are improved, energy consumption and delay are reduced, and good communication quality is guaranteed.

A first communication device capable of selecting a bandwidth, includes a receiving circuit, for receiving a wireless signal from a second communication device according to a first bandwidth; a measurement circuit, coupled to the receiving circuit, for measuring a communication quality of the wireless signal; and a processing circuit, coupled to the measurement circuit, for selecting a second bandwidth according to the first bandwidth and the communication quality; and a transmission circuit, coupled to the processing circuit, for transmitting information of the second bandwidth to the second communication device, for the second communication device to transmit the wireless signal to the first communication device according to the second bandwidth.

The invention relates to the technical field of communication quality, and particularly discloses an acquisition terminal for communication quality monitoring, which comprises an electric energy meter interface module for reading an instrument value from an electric energy meter; the time synchronization module is used for aligning the terminal clock to the coordinated world time and generating a time frame with 1s as granularity; the communication quality monitoring module is used for measuring a communication quality index and calculating a value at the 95% position within a preset statistical time period as a statistical result preset statistical time period; the data slicing and counting module is used for forming 10T0 fragments according to 10 fundamental wave periods in each time frame; the caching and out-of-order correction module is used for performing grouping, out-of-order rearrangement and missing compensation on instrument values and communication quality indexes according to the same time frame before uploading and completing framing in a waiting window; and the alarm and uploading module is used for outputting a local alarm by taking the value of the 95% position as a statistical result. According to the invention, the overall end-to-end time delay of the acquisition terminal is reduced.

The invention relates to the technical field of wireless communication, and discloses a compensation method for electronic radio frequency communication. According to the compensation method for the electronic radio frequency communication, the radio frequency signal and the channel state information are acquired, the original data set is generated, and the preprocessing steps of denoising, signal amplitude correction, phase correction and the like are performed, so that the data quality is improved, accurate parameter evaluation is performed by adopting the minimum mean square error, the accuracy of channel characteristic parameters is ensured, and the communication quality is improved. A mathematical model constructed based on the parameters enables calculation of compensation parameter gain and phase deviation to be more accurate, so that attenuation and distortion caused by signal propagation in a channel are effectively compensated, and finally, quality evaluation is carried out on the bit error rate and the signal-to-noise ratio of the compensated signal, so that the compensation effectiveness is ensured, and the signal quality is improved. And if the compensation is invalid, the calculation can be returned in real time for recalculation, so that the quality of the whole signal is improved.

The invention discloses a substation primary and secondary equipment communication prefabricated optical cable online monitoring method and system, and belongs to the technical field of communication prefabricated optical cable monitoring. The system comprises an optical cable parameter acquisition module, a communication quality evaluation module, a physical parameter analysis module, a first-aid repair path planning module and a fault database. The method comprises the following steps: optical cable parameter acquisition: acquiring data in real time, and converting high-dimensional data into low-dimensional data through a principal component analysis algorithm; communication quality evaluation: identifying communication characteristics in the low-dimensional signal parameter matrix based on a fuzzy comprehensive evaluation algorithm, and outputting a communication quality score; the physical parameter analysis module extracts physical deep features of the optical cable by using a deep belief network DBN, and inputs an improved Bayesian classifier to output a state classification result; according to the first-aid repair path planning, OTDR detection parameters are dynamically adjusted, and an optimal first-aid repair path is planned in combination with the position of the inspection robot; according to the invention, optical cable communication quality evaluation, accurate physical state classification and efficient fault repair planning are realized.

The invention discloses a help-calling emergency response system based on an intelligent communication network, particularly relates to the field of intelligent communication, and comprises a multi-source data acquisition layer, a preprocessing and feature extraction layer, a progressive analysis engine, a decision fusion center and an execution control layer. According to the method, the data integrity and the anti-interference capability are remarkably improved, the time-space reference unification module adopts a PTP protocol and a coordinate system conversion technology, accurate alignment of multi-source data is achieved, a multi-dimensional feature matrix is generated through time-frequency conjoint analysis, and the problem that the feature extraction dimension of a traditional system is single is solved; the progressive analysis engine triggers a hierarchical response strategy based on dynamic fusion of a transmission robustness index, a space confidence coefficient and an environmental risk value, combines terrain refraction compensation and a timeliness attenuation mechanism to optimize decision logic, breaks through the limitation of a fixed threshold response mode, adapts to communication quality fluctuation and environmental sudden change, reduces rescue delay risk, and improves rescue efficiency. And the resource scheduling accuracy and the system intelligence level are improved.

The invention provides a directional network adaptive radiation control method and system, and relates to the technical field of wireless network control, and the method comprises the steps: obtaining real-time high-frequency motion data, relative distance data and environment interference intensity data of a wireless network; motion state continuous quantization is carried out according to the real-time high-frequency motion data, and motion characteristic quantities are constructed and obtained; performing multi-step track prediction processing according to the motion characteristic quantity, and outputting a track prediction sequence; performing prediction reliability evaluation according to the trajectory prediction sequence, and generating a trajectory uncertainty index; generating a radiation control signal according to the motion characteristic quantity and the trajectory uncertainty index to obtain the radiation control signal; and performing beam forming and power adaptive processing according to the radiation control signal and the real-time relative distance data to obtain a final beam form and power parameter combination. According to the method, the communication quality and the anti-interference capability of the directional network in a complex environment are remarkably improved.

The embodiment of the invention provides an unmanned aerial vehicle semantic communication method and device, and the method comprises the steps: enabling an unmanned aerial vehicle to reach a task point according to a planned track, and collecting image data at the task point; preprocessing the image data to obtain image information with consistent dimensions; performing semantic coding on the image information by using a semantic encoder to obtain a semantic feature vector; performing channel coding on the semantic feature vector by using a channel coder to obtain a semantic symbol; and sending the semantic symbols to a base station through a wireless channel. According to the method, only key semantic information needs to be transmitted, the amount of data needing to be transmitted is greatly reduced, occupied communication resources are reduced, the communication quality and reliability can be optimized to the maximum extent through trajectory planning and resource allocation, and the overall performance of a communication system is guaranteed.

The invention relates to the technical field of underground communication, in particular to an underground deterministic network optimization scheduling method. According to the method, underground roadway humidity, electromagnetic interference and channel blocking data are obtained in real time, a blocking state distribution diagram is generated, a reconfiguration demand threshold value is determined, and then a data packet dynamic reconfiguration sequence is formulated; dynamically adjusting time slot division granularity and antenna gain parameters by comprehensively evaluating multi-path reflection interference, dust influence and an equipment moving track, and generating an optimized time slot allocation scheme; and finally, adaptively adjusting time slot configuration according to a comparison result of the signal attenuation dynamic distribution and a preset threshold value. According to the invention, the dynamic influence of the underground complex environment on the communication quality is effectively overcome, the reliability, real-time performance and network resource utilization efficiency of data transmission are remarkably improved, and reliable communication guarantee is provided for mine safety production.

The invention relates to the technical field of coal mine automation control, and discloses a coal flow windscreen wiper multi-device cooperative control method and system. The method comprises the following steps: obtaining an original environment data set of each sensor node in an underground environment, processing the original environment data set to obtain a communication quality index, calculating bandwidth demand change of each node in combination with historical transmission records of the nodes, and predicting a resource allocation proportion; when the current available network resources cannot meet the requirements, sorting the key data packets to obtain a priority transmission sequence; extracting high-priority data from the sequence, temporarily storing the high-priority data to a local cache unit, and determining the state of a buffer area; dynamically adjusting bandwidth allocation by adopting an intelligent optimization model, and updating communication resource configuration; and judging whether the resource configuration meets a load balance requirement, if so, sending a data packet through a wireless channel, determining a transmission performance index, and generating a resource management scheme of a next period. The cooperative work efficiency of multiple devices of the coal flow windscreen wiper in the high-dust and high-humidity environment is improved.

The invention discloses a cellular module power control method based on a network state and a service load, and aims to solve the problems of low energy utilization rate, unstable communication quality and the like of a traditional power control scheme. According to the method, power control parameters including a dynamic power protection threshold, a hardware protection delay and a hardware protection release threshold are defined and issued through a standardized interface. The network state and the service load are monitored in real time, and multi-dimensional data are collected to support power calculation. A module physical layer is combined with monitoring data, and through logic of basic power reference calculation, service load correction, parameter boundary verification and the like, target power giving consideration to communication quality and energy consumption is obtained. Dynamic power adjustment is executed according to the target power, when the target power reaches the upper limit, the standby power supply and the main power supply are triggered to supply power cooperatively, and power smooth transition and hardware protection are achieved in combination with hardware protection delay. And if the closed-loop monitoring adjustment effect does not reach the standard, iterative optimization is carried out again. The energy utilization rate is improved, and the communication transmission success rate is improved.

The invention provides an unmanned aerial vehicle communication intensity calculation method and system based on data driving, and belongs to the technical field of low-altitude traffic network communication, and the method comprises the steps: processing obtained communication parameter data through employing a pre-trained graph neural network model, and achieving the prediction of the signal intensity of each grid; wherein the graph neural network model is composed of a plurality of graph attention network modules, a full connection layer and an output layer. According to the method, characteristic parameters related to urban environment and signal attenuation serve as input, signal intensity values serve as output, a graph neural network model is trained, and a high-precision and high-efficiency low-altitude communication signal attenuation estimation model is established. The model can effectively estimate the low-altitude communication signal intensity in different urban scenes, and the estimation result can provide a scientific basis for communication quality partition and system optimization of an urban environment.

The invention relates to the technical field of communication anti-interference detection, in particular to a communication anti-interference simulation detection method for a flywheel energy storage system, and the method comprises the following steps: obtaining torque data to generate disturbance characteristics, comparing interference levels, injecting electromagnetic signals, monitoring error code statistics delay errors, and analyzing communication levels to generate a link anti-interference simulation detection result. According to the method, disturbance characteristics are constructed by extracting torque sudden change points, interference frequency band injection is guided, causal linkage of disturbance response and electromagnetic interference is formed, and pertinence and effectiveness of interference injection are enhanced; identifying a bit error rate fluctuation trend and a delay peak value through a sliding window, and realizing dynamic description of a communication quality degradation process; a synchronization error is calculated in combination with an interference spectrum and an error code time point, and the capability of monitoring the consistency change of link time is improved; grade mapping is carried out on the basis of multi-dimensional indexes, the anti-interference performance is converted from static testing to dynamic evaluation, and the testing granularity, adaptability and accuracy are improved.

This application provides a communication method, apparatus, and system. The method includes: a terminal device receiving configuration information, the configuration information being used to configure the terminal device to communicate on K cells, where K is a positive integer; the terminal device receiving first indication information, the first indication information indicating a first capability, the first capability being related to the configuration information, and the first capability being at least one of a first frequency band combination, a first characteristic set, or a first carrier characteristic set. The terminal device can obtain accurate communication configuration in a timely manner, avoiding uplink and downlink reception impairments, bit errors, and other anomalies caused by inaccurate alignment of this information between the network device and the terminal device, thereby improving communication quality.

The invention relates to the technical field of unmanned aerial vehicle autonomous control or cloud-side cooperative robot control, in particular to an unmanned aerial vehicle harmful gas distribution monitoring system based on a cloud platform, and the system comprises a communication quality analysis unit which generates a communication quality comprehensive index; the decision authorization migration unit generates a decision authorization factor; the cloud fusion updating unit generates a cloud planning waypoint; the airborne data processing unit generates airborne autonomous waypoints and data retention factors; the collaborative path planning unit is used for performing weighted fusion on the cloud planning waypoint and the airborne autonomous waypoint when the decision authorization factor is lower than an autonomous mode activation threshold value, and generating a final execution waypoint; when the decision authorization factor is greater than or equal to the autonomous mode activation threshold, setting the cloud planning waypoint as a final execution waypoint; according to the invention, the inherent contradiction between cloud centralized control and airborne autonomous detection is solved, and the overall toughness and efficient execution of a monitoring task are ensured.

The invention provides a self-adaptive anti-interference optimization method for a star flash communication network, which comprises the following steps of: sensing an electromagnetic interference signal in a power scene in real time, and extracting an interference feature vector; generating a communication parameter optimization strategy through an intelligent decision engine based on the interference feature vector and an equipment digital twin model; dynamically adjusting at least one of the transmitting power, the frequency band, the modulation mode and the coding rate of the satellite flash communication node according to the communication parameter optimization strategy; and monitoring a communication quality index fed back by the star flash communication node in real time, and forming closed-loop feedback to trigger iterative optimization. The invention further provides a corresponding system. By implementing the method, the reliability and the stability of the satellite flash communication in a complex power scene can be remarkably improved.

The invention discloses a routing method and device for converged communication messages, electronic equipment and a storage medium, and relates to the technical field of converged communication or other related fields, and the method comprises the following steps: receiving a call request from a communication terminal, and preprocessing the call request to obtain a target call request, the preprocessing comprises heterogeneous protocol unified processing and semantic enhancement information adding; fusing the network state data and the semantic enhancement information of the current network environment to obtain routing decision data; the routing decision data are input to a target decision model, a routing strategy is output, and the target decision model comprises a reinforcement learning model formed by training based on historical routing data; and forwarding the target call request according to the routing policy. According to the method and the device, the technical problem that the communication quality is reduced due to inaccurate message analysis and untimely forwarding caused by defects in protocol adaptability of a traditional routing mechanism in the related technology is solved.

Example embodiments of the present disclosure relate to methods, devices, and computer storage medium for communication. The method comprises: receiving, at a terminal device from a network device, at least one of the following parameters associated with a protocol data unit (PDU) set: a first parameter indicating whether all PDUs in the PDU set are needed by an application layer; a second parameter indicating whether the PDU set is to be discarded when an additional PDU set associated with the PDU set is lost or discarded; a third parameter indicating a discard timer for the PDU set; or a fourth parameter indicating a reordering timer for the PDU set, and processing the PDU set based on the received at least one of the parameters. In this way, packet processing with PDU set granularity is supported, and PDU-set based handling is also supported. Therefore, communication quality and network performance are improved.

The invention discloses an optimization method and device of a satellite communication channel, terminal equipment and a storage medium, and belongs to the technical field of satellite communication, and the method comprises the steps: through a channel state prediction model, according to a first channel state parameter of the satellite communication channel at a current moment and second channel state parameters of a plurality of historical moments, carrying out the optimization of the satellite communication channel; and identifying the change trend of the satellite communication channel, and predicting the predicted channel state parameter of the satellite communication channel at the next moment. According to the first channel state parameter and the predicted channel state parameter, when it is judged that a fluctuation risk exists in a satellite communication channel, a target modulation coding scheme is generated; and finally, switching the modulation coding mechanism of the satellite communication system according to the target modulation coding scheme, thereby realizing real-time optimization of the satellite communication channel, and solving the problems that the modulation coding mechanism of the satellite communication system is lagged in adjustment and the satellite communication quality is difficult to guarantee.

The embodiment of the invention provides a training method and device for a poor-network-quality root cause recognition model, equipment and a medium, and belongs to the technical field of communication network operation and maintenance. The method comprises the following steps: performing feature extraction on first network performance time sequence data through an initial encoder to obtain a first poor communication quality feature, and updating the initial encoder according to the first poor communication quality feature and a first poor quality root cause category label to obtain a reference encoder; performing feature extraction on the second network performance time sequence data through a reference encoder to obtain a second communication poor quality feature, and determining a predicted poor quality root cause category of the second network performance time sequence data based on the second communication poor quality feature through an initial classifier; and calculating cross entropy loss according to the second poor-quality root cause category label and the predicted poor-quality root cause category, and updating a reference encoder and a classifier according to the cross entropy loss to obtain a network poor-quality root cause identification model. According to the embodiment of the invention, the accuracy of network poor-quality root cause identification can be improved.

The invention discloses a cross-medium wearable audio transmission system and a transmission method thereof, which are suitable for audio communication scenes in an air and water body junction environment such as a natatorium. The system comprises a shore transmitting terminal and an underwater receiving earphone, and adopts a blue-green light wave band as a transmission carrier to realize cross-medium wireless transmission of audio signals. The transmitting terminal comprises an audio preprocessing module, a modulation and driving module and a coarse-fine composite light beam alignment module; the receiving earphone comprises an optical receiving module, a posture sensing and aligning module, a signal processing module and a bone conduction audio output unit. According to the system, through a dynamic attitude compensation and light beam alignment mechanism, the audio transmission rate greater than or equal to 1Mbps in a 10-meter range is realized, the error rate is less than or equal to 1 * 10 <-6 >, and the transmission delay is less than 50ms. The method has the advantages of high communication quality, strong anti-interference capability, good wearable performance and the like, and is suitable for scenes of underwater training, voice guidance, immersive audio playing and the like.

The invention designs a short-wave over-the-horizon communication comprehensive simulation analysis method for the problems of cascade and comprehensive analysis of antenna radiation characteristics and radio wave propagation environments. The method comprises the steps of performing radiation characteristic simulation on a short-wave antenna, constructing an ionosphere model, simulating a propagation path of a short-wave signal in an ionosphere by adopting a ray tracing technology, integrating antenna characteristics, an ionosphere environment and a propagation mechanism, and calculating falling area energy distribution of the signal. And comprehensive evaluation and analysis of the reachable range of short-wave beyond-visual-range communication are realized. According to the method, the signal propagation path and fading characteristics of the signal from the radiation source to the receiving tail end can be comprehensively mastered, and guidance and basis are provided for antenna selection, erection, coverage area analysis and communication quality estimation in practical engineering application of short-wave beyond visual range communication.

The invention relates to the technical field of emergency management, in particular to a visual emergency management command system which comprises a network channel judgment module, a broadcast circling adjustment module, a material linkage retrieval module, a bidirectional response matching module and an instruction popup prompt module. And judging the fluctuation condition of the signal-to-noise ratio along with time. According to the method, the signal dynamic change and the communication quality sequence are fused, multi-channel use is optimized in real time, the boundary is dynamically linked according to spatial distribution and equipment motion characteristics in the region circling operation, and multi-dimensional association is realized by combining the spatial distance between a team and a warehouse and a material demand type; the supply-demand relationship is automatically graded according to the actual supply difference and visual identification is realized, and the material gap is displayed through popup window information and geographical highlight linkage, so that multi-link data-driven linkage across network, space and resource dimensions is integrally realized, the fine resource allocation and efficient response capabilities are improved, and the collaborative guarantee in an emergency scene is enhanced.

The invention discloses a multi-mode anti-interference communication method and system based on lip language recognition, and belongs to the technical field of communication equipment. The method comprises the following steps: acquiring a face lip video stream and an audio signal; in response to the conventional mode trigger signal, feature extraction is performed on the lip video stream and the audio signal, and extraction results are fused to generate a fused feature vector; performing voice enhancement on the fusion feature vector in combination with lip motion information, and outputting an audio enhancement signal; and in response to the silent communication mode trigger signal, performing lip language recognition based on the face lip video stream to obtain a lip language recognition text, and converting the lip language recognition text into voice. Clear and stable communication in an ultra-strong noise environment can be realized by combining two types of modal information, and the problem that the communication quality is influenced by an existing high-noise environment and the requirement for mobile silent communication in a special scene are solved.

The invention discloses a multi-protocol compatible hydropower station field bus photoelectric signal synchronous acquisition device and method, and relates to the technical field of industrial bus testing, the device comprises a core control layer, a signal conditioning layer, a photoelectric interface layer, a clock synchronization layer, a power management layer and a data storage and transmission layer; the core control layer adopts a dual-core framework of a domestic Loongson 2K0300 main control unit and a domestic FPGA (Field Programmable Gate Array) time sequence control unit; the clock synchronization layer adopts a two-stage synchronization mechanism of'local crystal oscillator time sequence control + NTP network clock calibration '; and the signal conditioning layer is integrated with a multi-protocol self-adaptive conditioning module and an industrial-grade anti-interference module. The method comprises the steps of clock initialization and calibration, parameter configuration, photoelectric signal parallel acquisition and time sequence synchronization, and data preprocessing and transmission, so that synchronous acquisition of six types of bus protocol photoelectric signals is realized. The system has the advantages of multi-protocol compatibility, autonomous controllability, good portability and the like, and provides reliable data support for bus communication quality evaluation and fault diagnosis.

The invention relates to the technical field of network communication, in particular to an intelligent visual edge gateway control method based on a 5G network. According to the method, real-time transmission and timely control of edge gateway information are achieved through the 5G network, meanwhile, the operation state of the edge gateway is visually and comprehensively mastered through the information, timely finding and processing of problems are facilitated, the visual quality and the data transmission quality are ensured along with channel communication quality evaluation and analysis of the 5G network, and the service life of the edge gateway is prolonged. The resource allocation is dynamically adjusted in an information progressive mode, the transmission timeliness of priority data is guaranteed during channel load fluctuation, the problem that a fixed scheduling strategy is poor in adaptability is solved, meanwhile, the operation state information of the edge gateway is further analyzed, and the service life of the edge gateway is prolonged. According to the method, reasonable fault management can be carried out according to hardware or software faults of the edge gateway, namely, the hardware faults and the software faults are analyzed, so that the faults of the edge gateway can be found and processed in time, manual intervention is reduced, and the reliability of the system is improved.

The invention discloses an unmanned aerial vehicle ISAC system beam and three-dimensional trajectory joint optimization method for covert communication. Aiming at the condition that potential monitors exist in a network architecture in which an unmanned aerial vehicle performs downlink information transmission to a plurality of ground users, a communication system model is firstly constructed, and then an optimization problem conforming to a scene with user scheduling, a communication and sensing integrated waveform and an unmanned aerial vehicle flight path as constraints is constructed by taking maximization of an average covert communication rate of a system as a target; then, based on a BCD method, an original optimization problem is decoupled into sub-problems about user scheduling, a common inductance integrated waveform and a UAV three-dimensional flight path, and convex approximate fitting is carried out on each non-convex sub-problem; and finally, solving by adopting an iterative algorithm to find a global suboptimal solution of the whole optimization problem, an optimal sensing integrated waveform and a UAV flight trajectory. According to the invention, the security of information transmission is improved, the communication quality and concealment are maximized, and concealed transmission of information is realized.