2492 results about "Transmission performance" patented technology

The invention relates to the technical field of computer network security and data transmission, and discloses a computer network security data transmission method and device, and the method comprises the steps: obtaining real-time threat intelligence data, a real-time packet loss rate and a real-time transmission performance parameter, carrying out the encryption, and obtaining encrypted fragmented data; inputting the real-time transmission performance parameters into a path performance evaluation model to obtain a path performance score; sorting according to the path performance score to obtain a transmission path set; according to the transmission path set, matching to obtain a sequence corresponding relation; generating complete transmission data according to the sequence corresponding relation; performing anti-attack optimization according to the real-time transmission performance parameters to obtain a link connection strategy; analyzing the link quality according to the real-time packet loss rate to obtain a transmission link quality score; and performing dynamic adjustment according to the transmission link quality score, the link connection strategy and the complete transmission data to obtain real-time transmission data. According to the method, real-time and complete computer network security data transmission can be realized.

The invention relates to the technical field of data transmission, and discloses a signal I / O control device based on multiple protocols and a data transmission method thereof. The method comprises the following steps: initializing a multi-protocol signal I / O control device, and selecting a main controller; performing protocol characteristic analysis and protocol pre-configuration to obtain a plurality of pre-configured protocol schemes; performing data feature analysis and priority division on the data to be transmitted to obtain a multi-level priority data structure; carrying out transmission strategy optimization to obtain a target transmission strategy; network state change information is monitored in real time, a protocol switching mechanism of a DPPS algorithm is triggered, and dynamic protocol adjustment is carried out; in the data transmission process, exception detection is executed to obtain exception information, and a two-stage exception handling mechanism is executed to perform fault recovery and transmission performance evaluation to obtain a transmission performance evaluation report, so that timely transmission of important data is ensured, and the quality and reliability of data transmission are improved.

The invention provides a power system optimization control method and device based on power market transaction. The method comprises the following steps: acquiring real-time electricity price fluctuation data, load demand prediction data and dynamic topology connection data between power grid nodes; generating a simplified network structure adaptive to a transaction scene based on the data, and adjusting an equivalent impedance parameter of a key transmission path in real time; a node voltage amplitude and a phase angle are cooperatively regulated and controlled through a multi-stage regulation mechanism of the solid-state transformer, and a power distribution scheme is formed; monitoring operation data of the solid-state transformer in real time by utilizing an edge computing node, and generating a local control instruction by combining the current equivalent impedance parameter; and carrying out space-time mapping matching on the local instruction and the electricity price fluctuation data, generating a combined control strategy through collaborative priority ranking, and dynamically adjusting a power distribution scheme. According to the technical scheme provided by the invention, collaborative optimization of economical operation and physical transmission performance of the power system is realized.

The invention relates to the technical field of data packet transmission, and discloses a data packet transmission control method and device for a low-power-consumption dual-mode Bluetooth chip, and the method comprises the steps: obtaining a signal strength parameter, a power consumption parameter, a transmission rate parameter and an environment parameter of the dual-mode Bluetooth chip, inputting the parameters into a deep time convolution network, and carrying out the time sequence feature extraction, obtaining a transmission mode switching judgment result; calculating transmission state evaluation data; the chip transmitting power is adjusted in a grading mode, standby power consumption is controlled through a nanoamp LDO circuit, and a dynamic power control parameter is obtained; performing compression coding on the data packet to obtain a dual-mode transmission protocol configuration parameter; executing time sequence sampling, and constructing a dual-mode state feature sequence; the data packet delivery success rate, the end-to-end transmission time delay and the total power consumption of the system are calculated, transmission control parameter optimization is carried out through double-layer deep reinforcement learning, target transmission control parameters are obtained, and the optimal balance of the transmission performance and the power consumption of the dual-mode Bluetooth chip is achieved.

The embodiment of the invention provides a communication method and device, relates to the field of communication, and is used for improving the transmission performance of tags. In the method, a first device sends a first message, receives a second message, and sends a third message according to the second message. Wherein the first message comprises a first part of data in the first data, the second message is used for indicating whether the first message is successfully transmitted, and the third message comprises a second part of data in the first data or a third part of data in the first data; the second partial data is different from the third partial data, and the second partial data and the third partial data are both related to the first partial data. The first apparatus may be a tag, or a device, or a terminal device.

The invention relates to a satellite-to-ground network adaptive image semantic communication method based on an NOMA technology, and the method comprises the following steps: S1, building a satellite-to-ground semantic communication frame integrated with the NOMA technology: carrying out the power superposition and serial interference elimination of different user transmission contents through the NOMA technology, a coding and decoding process is optimized through deep joint source channel coding based on hierarchical vision using a shift window; s2, establishing an adaptive semantic communication model: dynamically adjusting coding parameters based on a target bandwidth ratio and a signal-to-noise ratio of a satellite-ground channel; s3, proposing a dynamic weight adjustment algorithm: optimizing model convergence speed and transmission performance tradeoff under different channel conditions; and S4, designing a feature selection module: performing priority ranking on the image features, and selectively transmitting important features according to bandwidth resources. According to the method, the adaptive semantic communication model (ASeC-NOMA) which can be dynamically adjusted according to the target bandwidth ratio and the signal-to-noise ratio is constructed, and a large number of model storage parameters are saved while the transmission performance is ensured.

The invention discloses a signal transmission method and device based on joint index modulation, and belongs to the technical field of communication. Through the joint index modulation rule, accompanying transmission of the secret key of the multi-layer encrypted chaotic system is achieved, the rule has a certain constellation forming effect on a constellation diagram, and by optimizing the dual-mode index rule and the subcarrier index rule, optimized distribution of internal constellation points is achieved, and the transmission performance of signals is improved; in addition, only a legal receiving end can extract a correct key through a joint index rule for decryption and demodulation, and an illegal receiving end cannot realize correct demodulation due to the effect of multi-layer encryption and the loss of the key, so that high-safety and high-performance transmission of the key and the signal is ensured.

The invention discloses a power transmission line fault monitoring system based on regional cooperation, relates to the technical field of power transmission line fault monitoring, and solves the problems that the transmission performance of an existing power transmission line monitoring system is reduced due to the characteristics of a cable and the characteristics of a transmission environment; and the accuracy of transmission line abnormity diagnosis is reduced. Comprising a data acquisition module used for acquiring monitoring data of each transmission line; the regional analysis module is used for generating an influence coefficient according to historical environment data; adjusting the monitoring threshold data according to the influence coefficient to obtain characteristic threshold data; establishing a power transmission line topological graph according to the power transmission line data; the fault monitoring module is used for generating monitoring result data corresponding to the management area according to the monitoring data and the characteristic threshold data; the fault early warning module is used for acquiring monitoring result data and a power transmission line topological graph; generating an abnormal early warning according to the monitoring result data and the power transmission line topological graph; and the accuracy of transmission line abnormity diagnosis is improved.

The invention provides a baseband radio frequency signal data feedback processing method based on vector modulation, and the method comprises the steps: firstly receiving a baseband signal data set transmitted by a target radio frequency link in a preset frequency band, and the baseband signal data set comprises a plurality of signal frame original modulation parameters and corresponding radio frequency feedback signal waveforms; calculating a feedback error index composed of a phase offset, an amplitude distortion factor and a spectrum leakage factor according to a radio frequency feedback signal waveform, quantifying a modulation error, carrying out time-frequency domain conjoint analysis on the feedback signal waveform, extracting an error feature vector, inputting the error feature vector into a pre-training model for cross-frame correlation learning, and carrying out the correlation learning; according to the method, a dynamic adjustment parameter sequence containing a time sequence dependency relationship is generated, and finally a closed-loop feedback control link is constructed based on the dynamic adjustment parameter sequence and original modulation parameters, so that precise processing and optimal control of baseband radio frequency signals are realized, and the signal transmission performance is effectively improved.

The invention discloses an antenna control method and device and electronic equipment, and relates to the field of multimode cooperative communication, and the method comprises the steps: analyzing the characteristics of the environment around an antenna, generating an optimal polarization strategy in combination with a characteristic analysis result and a polarization switching prediction algorithm, transmitting a test signal through an antenna array controller, and recording a channel impulse response, time inversion processing is carried out on the channel impulse response, a time inversion signal and a phase compensation parameter are combined to generate a reverse emission signal, the reverse emission signal is reemitted, an optimal polarization strategy is combined to adjust the polarization state of each array element, a beam forming parameter set is generated, and the phase and amplitude of antenna equipment are adjusted through a controller. And monitoring signal strength and transmission efficiency, and generating a signal transmission performance data report. The antenna polarization switching method and device solve the technical problems that an antenna polarization switching algorithm cannot adapt to a dynamic electromagnetic environment and a multipath effect, the stability is insufficient, the signal strength is unstable, and the communication quality is affected in the related technology.

The invention discloses a high-precision and high-reliability harmonic reducer tooth profile simulation machining design method, and belongs to the field of precision transmission. A composite cycloid flexible gear tooth profile is designed by establishing a harmonic reducer geometrical relationship model, deducing a flexible gear deformation equation, an accurate rotation angle relationship and a meshing theory based on an envelope method, and a conjugate region and a conjugate tooth profile are calculated by utilizing MATLAB. Actual deformation and theoretical deformation errors of the flexible gear are analyzed through finite element simulation, flexible gear profile parameters are optimized, an actual neutral layer curve is generated, and then a rigid gear profile is enveloped and calculated. The tooth profile design adopts a non-zero inclination angle composite cycloid, so that the meshing area is expanded by more than 30%, and the maximum stress of the flexible gear is reduced by 22.75% in combination with a linear modification method and a finite element modification method. In addition, through a multi-physical field simulation verification system (including static deformation, dynamic contact and fatigue life prediction) and a neural network optimization tooth shape parameter, the transmission performance is remarkably improved. According to the method, the torsional rigidity can be improved by 66%, and the transmission error is controlled within a high-precision range.

The invention relates to the field of surface-mounted metasurface structure design, in particular to a design method and device for a multi-frequency transparent transmission type surface-mounted metasurface structure, and the method comprises the steps: representing a multi-layer structure of a glass surface-mounted metasurface through a cascade transmission matrix; wherein the metasurface comprises a metal layer and a dielectric layer; a corresponding transmission coefficient is calculated by using the represented cascade transmission matrix, and a theoretical optimal transmission coefficient of a target frequency band under the structure is obtained by adjusting the dielectric constant and the thickness of a metasurface dielectric layer and the equivalent impedance of a metasurface metal layer to determine an initial structure and a parameter change interval of a to-be-optimized metasurface unit; simulating to obtain a transmission coefficient under the initial structure of the metasurface; and based on the transmission coefficient under the initial structure of the metasurface, taking a theoretical optimal transmission coefficient as an optimization target, and adopting a quasi-Newton algorithm to optimize metasurface design to obtain a metasurface structure corresponding to the optimal transmission coefficient. Compared with the prior art, the invention has the advantages of greatly and stably improving the transmission performance of multiple frequency bands and the like.

The invention discloses a nonlinear equalization method, device and equipment and a storage medium, and relates to the technical field of communication, and the method comprises the steps: obtaining a floating point tap coefficient of an original equalizer, and carrying out the low-order quantization of the floating point tap coefficient, and obtaining an integer tap coefficient; constructing a target equalizer based on the integer tap coefficient; and compensating nonlinear distortion of a to-be-processed signal based on the target equalizer to obtain a recovered signal. Through the mode, the low-order quantization is performed on the tap coefficient of the equalizer, and the traditional floating-point number is converted into the low-order integer for representation, so that the storage space and the calculation complexity are remarkably reduced, the hardware implementation efficiency can be optimized and the power consumption can be reduced while the transmission performance is ensured.

The invention relates to the technical field of power transmission line monitoring, and discloses a power transmission line monitoring data transmission method based on Lora and 5G hybrid networking, and the method comprises the steps: determining a network access mode through a hybrid networking selection algorithm, and generating a communication link through dual-module networking configuration; original monitoring data are processed by using a data framing compression algorithm, and a path is selected and verified through dynamic routing optimization; the modulation format is adjusted through the space-time alignment data of the multi-modal data fusion model and the adaptive modulation technology; optimizing transmission by using an abnormal data filtering algorithm and a dynamic priority scheduling program; and feedback learning mechanism evaluation performance and updating algorithm parameters. According to the invention, network adaptability, data transmission efficiency and reliability are improved, data fusion processing is optimized, adaptive optimization of transmission performance is realized, operation and maintenance cost is reduced, and safe and stable operation of a power system is guaranteed.

The invention discloses a method and an apparatus in a node for wireless communication. A node receives a first information block and a second information block, the first information block indicating at least one full duplex symbol; the first PUSCH is sent in N transmission opportunities, N is an integer greater than 1, and the second information block indicates N; wherein the N transmission opportunities comprise the transmission opportunities of at least one full duplex symbol, and the number of the transmission opportunities is N1; the transmission power of the first PUSCH is equal to a small value of a comparison between a first transmission power and a maximum output power, the maximum output power being dependent on a power level of a sender of the first PUSCH, a first parameter value being used to determine the first transmission power, the first parameter value being dependent on a first factor, the first factor being related to the N1, and a second parameter value being used to determine the first transmission power. The first parameter value is related to a BPRE value of the first PUSCH. The uplink transmission performance is improved.

This application relates to the field of wireless communication, and provides a communication method and apparatus, and a system, to implement continuous data transmission, thereby improving transmission performance. The method includes: A terminal device determines an available resource set SA corresponding to N pieces of data, where SA is located in a resource selection window, N parameter sets correspond to the N pieces of data, data i corresponds to a parameter set i, N is a positive integer greater than 1, i is an integer greater than or equal to 0 and less than N, and the parameter set i includes at least one of the following parameters: a sending priority prioTX,i, a data delay budget PDBi, a frequency domain resource unit LsubCH,i, or a channel access priority class CAPCi; and sends the N pieces of data on a resource in SA.

The invention relates to the technical field of AI intelligent routing inspection, in particular to an AI intelligent routing inspection control system, which comprises an optical fiber fracture monitoring module for monitoring operation state data of an optical fiber link in a wavelength division optical transmission system and judging an optical fiber fracture position and fracture degree by using an AI anomaly detection model; the optical power safety regulation and control module is used for automatically reducing the luminous power to a safety level according to the fracture position and the fracture degree of the optical fiber and based on an optical power dynamic regulation and control algorithm; the link recovery detection module is used for judging whether the optical fiber link is recovered or not; monitoring transmission performance parameters of the optical fiber; the communication control module is used for controlling the switching of communication states according to the fault alarm information of the optical fiber fracture monitoring module and the recovery confirmation signal of the link recovery detection module; and an inspection recording module. According to the invention, through the automatic recovery mechanism, the response speed of the system after fracture repair is greatly improved, manual intervention is reduced, and the overall self-healing capability is enhanced.

The invention discloses a layout method of a printed circuit board, a product, equipment and a readable storage medium, and relates to the technical field of PCB design, and the method comprises the steps: carrying out the optimization decoupling and optimization separation of a position layout and a rotation angle into independent stages of sequential execution, avoiding the mutual interference of two types of decisions, greatly reducing the search space, and improving the convergence efficiency. After newly-added elements are placed every time, all the placed elements on the current board are subjected to rotation optimization, the accumulated influence of default direction deviation of early-stage elements on subsequent layout is eliminated, the optimal solution is gradually approached through multi-round iteration, the total length of a finally-arranged wire net is reduced, the signal transmission performance of the PCB is remarkably improved, and the reliability of the PCB is improved. Therefore, the problem of irreversible influence of early decision on subsequent layout is solved, and the beneficial effects of improving layout quality and optimizing PCB circuit performance are achieved.

The invention discloses a zero-copy data transmission method and device, a medium and a product, and belongs to the technical field of data transmission, and the method comprises the steps that an application program requests a memory buffer area from a kernel module; the kernel module allocates a physical memory buffer area according to the request, and returns a specially designed descriptor (including a handle corresponding to an address pointer); the application program submits a descriptor to the kernel module and requests an address pointer of the memory buffer area; after the kernel module verifies the descriptor, the physical memory buffer area is mapped to a virtual address space of the application program, and a corresponding address pointer is returned; the application program writes data needing to be sent according to the address pointer, and after writing is completed, the descriptor is submitted to the kernel module and the written data is requested to be sent; after the kernel module verifies the descriptor, a DMA controller is configured and started, and the written data is directly read from the physical memory buffer area and pushed to a network card to be sent. According to the invention, the security and certainty can be improved while the transmission performance is ensured.

The invention provides a composite ferrite circulator and electronic equipment, the composite ferrite circulator comprises a first bias magnetic circuit assembly, a ceramic gasket, a composite material substrate and a second bias magnetic circuit assembly which are sequentially arranged along a first direction, and one side, close to the ceramic gasket, of the composite material substrate is provided with a microstrip circuit; one side, close to the second bias magnetic circuit assembly, of the composite material substrate is provided with a grounding metal layer, the composite material substrate comprises a ceramic dielectric substrate, the surface of the ceramic dielectric substrate is provided with a cylindrical ferrite penetrating along the first direction, and the outer side of the cylindrical ferrite is sequentially sleeved with a plurality of circular ring ferrites; the saturation magnetization intensity of the cylindrical ferrite and the saturation magnetization intensity of the circular ferrite are sequentially reduced from inside to outside. According to the scheme, a higher relative bandwidth of the circulator can be realized, and the non-reciprocal transmission performance of the circulator is improved, so that the overall working performance of the electronic equipment is improved.

The embodiment of the invention provides a method for determining optical transmission performance, the method is applied to a first device, and the method comprises the following steps: receiving an optical signal sent by a second device through an optical module, and performing photoelectric conversion on the optical signal to obtain a first electric signal; adding first noise to the first electric signal to obtain a second electric signal. And performing FEC decoding on the second electric signal to determine a first bit error rate of the second electric signal. And determining an optical transmission performance parameter in combination with a quantitative relationship between the first bit error rate and the target bit error rate. The target bit error rate is a large bit error rate, and if the first bit error rate is equal to the target bit error rate, the bit error rate of the second electric signal is degraded to the target bit error rate after the first noise is added to the first electric signal, so that the first device can determine an optical transmission performance parameter for measuring the optical transmission performance according to the first noise. Therefore, by using the scheme of the embodiment of the invention, the optical transmission performance can be determined.

The invention discloses a priority scheduling method and device, electronic equipment, a storage medium and a program product, and relates to the technical field of communication. According to the specific implementation scheme, the method comprises the steps of determining a priority code point PCP queue of a fixed service and the sending time of the fixed service in the PCP queue through a user configuration module CUC in a time sensitive network TSN, and determining a gating configuration list corresponding to the PCP queue; determining a transmission performance index corresponding to the service characteristic of the dynamic service; and in a twin model of the TSN, according to the dynamic service and the transmission performance index, determining a PCP queue of the dynamic service and the sending time of the dynamic service in the PCP queue. The problem of distributing priority queues for services in a time sensitive network TSN is solved, high adaptability and robustness are achieved, the PCP queues in the TSN are efficiently utilized, meanwhile, the twinborn model is introduced, the complexity of PCP queue configuration is reduced, and resource waste is reduced.

The invention discloses an eBPF-based kernel optimization method, system, equipment and medium, belongs to the technical field of Linux kernel network optimization, and aims to solve the technical problem of how to improve the transmission performance for a specific data stream and specify the data stream to carry out a special routing and transmission process so as to provide services for a special network adapter and improve the transmission performance of the specific data stream. According to the technical scheme, the method comprises the steps that data packet interception is carried out on a plurality of kernel eBPF loading points and program interception points selected by a user through an eBPF kernel hook program, routing query is carried out with a routing kernel module, and selection of an operation function and routing parameters is completed; the routing kernel module completes a routing decision based on various complex routing requirements, configuration conditions, data packet conditions and environment conditions, and returns a query result to the eBPF kernel hook program, and the query result is executed by the eBPF kernel hook program. The system comprises an eBPF user mode management program module, a user mode control tool, an eBPF kernel hook program module and a routing kernel module.

The invention provides a data processing priority scheduling method for high-speed satellite communication and related equipment, which can effectively improve the transmission performance of a high-speed satellite communication system so as to adapt to differentiated requirements of various communication scenes. The method comprises the following steps: acquiring cross-layer state information; calling a strategy matrix, wherein the strategy matrix is used for defining weight coefficients of different data types under different network states and channel qualities; calculating a target priority score for the to-be-transmitted data stream according to the cross-layer state information and the strategy matrix; sequencing the target priority scores from high to low to obtain a sequencing result; scheduling transmission queues of the data streams for transmission according to a sorting result, and allocating cache transmission queues for the data streams with high priority scores; when it is monitored that the priority score of the new data stream exceeds a preset emergency threshold value, the new data stream is inserted into a cache transmission queue of the transmission queue, and back pressure control is carried out on data streams of other priorities.

The invention discloses a power utilization acquisition intelligent anti-interference method in a heterogeneous network environment, and the method comprises the following steps: S1, carrying out the information collection of a power utilization acquisition node through a heterogeneous network, and obtaining the power utilization acquisition information; s2, constructing a feature data set, and training a BP neural network until convergence; s3, acquiring electric power acquisition information in real time, preprocessing the data, and sending the data into the training network to obtain a decision result; s4, the engine judges whether the decision parameters meet the current requirements or not according to the feedback transmission performance, and real-time dynamic adjustment is conducted according to the judgment result to resist interference, the invention further discloses a system for achieving the method, and the system belongs to the technical field of electric power data collection. The neural network can receive the processed signal in real time and quickly generate a decision result in a complex environment, dynamic optimization adjustment of system parameters is achieved to effectively suppress interference, and therefore it is ensured that the system can still operate stably in the complex interference environment and efficient data transmission is achieved.

The invention belongs to the technical field of atmospheric optics, and particularly relates to an atmospheric turbulence phase screen generation method based on complex variable matrix space-time interpolation. According to the invention, a complex variable matrix interpolation algorithm is used to simulate the continuous change of the light field intensity and the random phase screen in the propagation process; comprising the following steps: reflecting time continuity of a turbulent phase screen by using a random complex variable matrix according to a frozen flow hypothesis; based on a power spectrum inversion method, an atmospheric turbulence phase screen is generated; performing light field diffraction transmission simulation by using a Fresnel method; and displaying the change of results in different time steps by utilizing visual comparison. According to the invention, the transmission performance of the optical signal in a changing environment can be effectively improved, and the calculation complexity is greatly reduced.

The invention relates to the technical field of intelligent substations, in particular to a rapid detection system, method and equipment for a process level switch of an intelligent substation, and aims to solve the problem that existing detection only depends on network transmission performance indexes and cannot comprehensively evaluate the business function correctness and operation reliability of the switch. The system, the method and the equipment comprise a power system fault scene modeling and message generation unit, a high-precision synchronous message injection and capture unit, a multi-dimensional state association and comprehensive judgment unit and a diagnosis report generation unit. According to the scheme, comprehensive detection, high-fidelity scene and deep diagnosis are realized, and service reliability determinacy evaluation is provided.

The invention provides a network data transmission management method and system based on artificial intelligence, and the method comprises the steps: collecting network node response data through transmitting a stress probe packet carrying a dyeing mark, so as to train an artificial intelligence model which can map a data flow feature into a node transmission stress memory state; before the actual service is transmitted, the model is utilized to predict a path stress map to be triggered by the service data flow on a predetermined path. And then, the system generates a neutralization sequence packet for counteracting the stress state according to the atlas, sends the neutralization sequence packet in advance according to a multi-hop delivery strategy, actively adjusts internal processing states of all nodes on a path, and pre-optimizes a network environment for an upcoming service data flow. According to the invention, passive response is changed into active intervention, so that prospective optimization management of network transmission performance is realized.

Provided are a resource updating method and a related device, the method comprising: receiving an RRC message from a network device, the RRC message being used for configuring at least one reference signal resource group, each of the at least one reference signal resource group comprising at least one reference signal resource; and receiving a resource update message from the network device, the resource update message being used for updating information of reference signal resources of N reference signal resource groups in the at least one reference signal resource group, N being a positive integer, and the resource update message being DCI or MAC-CE. According to the embodiment of the invention, the information of the reference signal resource is updated through the DCI or the MAC-CE, compared with an RRC message, the time delay is relatively low, so that the network equipment can indicate the updated information of the reference signal resource to the terminal equipment in time, the terminal equipment can conveniently adjust a receiving beam in time, and the transmission performance is improved.

The invention provides a communication method and a communication device. The method may comprise: a network device sending N synchronization signals, N being an integer greater than 1; a network device sends M PDCCHs, and a terminal device jointly receives the M PDCCHs. Wherein the M PDCCHs are used for scheduling system information corresponding to the N synchronization signals or the N beams, the system information corresponding to the N synchronization signals or the N beams is the system information sent in the same time window, the information borne by the M PDCCHs is the same, and M is an integer greater than 1 or equal to 1. According to the method and the device, the information borne by the M PDCCHs is the same, so that the terminal equipment can jointly receive the M PDCCHs, and the transmission performance can be improved.