Power line carrier and OFDM wireless fused high-speed data transmission method

Abstract

The invention discloses a power line carrier and OFDM (Orthogonal Frequency Division Multiplexing) wireless fused high-speed data transmission method, which belongs to the technical field of communication, and comprises the following steps: S10, detecting the transmission quality of data of a power line carrier channel and an OFDM wireless channel, the transmission quality comprising the signal-to-noise ratio and bit error rate of the power line carrier channel and the OFDM wireless channel; s20, electrical parameters, including resistance, inductance and capacitance, of the cable are obtained according to the transmission quality, and the correlation influence of the change of the resistance on the transmission quality is analyzed on the basis of the resistance; and S30, selecting a transmission path according to the correlation influence, wherein the selection mode comprises presetting a safety threshold value for the signal-to-noise ratio and the bit error rate based on the change of the resistance. Through a flexible data distribution strategy, diversified requirements of different users on data transmission can be met, and through optimization of transmission path selection and coordination of a transmission mechanism, the stability and reliability of the system are improved, so that a smoother data transmission service is provided.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, in particular to a high-speed data transmission method by wirelessly integrating power line carrier and OFDM. Background Art

[0002] With the rapid development of the Internet of Things and smart grids, the demand for high-speed data transmission in homes and industrial environments is increasing. Power line communication (PLC) utilizes existing power line networks for data transmission, offering advantages such as no additional wiring and wide coverage. However, its transmission rate is limited by power line noise and interference. Orthogonal frequency division multiplexing (OFDM) wireless communication technology offers advantages such as high spectrum efficiency and strong resistance to multipath interference, but requires additional wireless equipment and spectrum resources.

[0003] Regarding this research, the application document with application number CN202410287185.2 provides a transmitter and system for power line carrier and wireless fusion transmission. The technical solution includes a transmission signal processing module, a carrier transmission analog front end, a wireless transmission analog front end, and a first switch switching module. The transmission signal processing module processes the data to be transmitted to obtain a digital intermediate frequency signal. The first switch switching module selects to transmit the digital intermediate frequency signal through the carrier transmission analog front end or the wireless transmission analog front end according to the preset frequency band selection strategy. This technical solution can flexibly select between power line carrier channels and wireless channels, fully utilizing the advantages of the two communication technologies, improving the data transmission reliability in long-distance communication scenarios, and solving the problem of power distribution and communication coverage blind spots in Class D and E power supply areas.

[0004] Another application document with application number CN202010192111.2 provides a communication method for the fusion of power line carrier and wireless dual modes. This technical solution adopts a four-layer communication protocol when communicating, including S1. After the communication service is generated, the physical layer performs diversity processing on the input signals of the power line carrier communication channel and the wireless communication channel based on OFDM modulation technology and outputs them; S2. After receiving the data transmission task, the MAC layer selects the power line carrier communication channel or the wireless communication channel for data transmission; S3. The network layer selects the optimal routing table path containing the power line carrier communication channel and the wireless communication channel; S4. The application layer aggregates the data of the power line carrier communication channel and the wireless communication channel. This technical solution realizes the heterogeneous fusion network communication of power line and wireless, optimizes network performance, improves the collection success rate, and reduces the construction and use costs of smart grids.

[0005] However, in practice, these technical solutions suffer from limited transmission efficiency and insufficient wireless channel stability. For example, while OFDM technology can increase the transmission rate of power line carriers, in complex power network environments, attenuation occurs due to cable resistance, inductance, and capacitance, leading to a decrease in the actual rate. Failure to adjust data transmission strategies to account for these resistance, inductance, and capacitance effects can significantly reduce the actual transmission rate, impacting the user experience. Summary of the Invention

[0006] In view of the above problems existing in the existing communication technology field, the present invention is proposed.

[0007] Therefore, one of the objectives of the present invention is to provide a high-speed data transmission method that integrates power line carrier and OFDM wireless. Through a flexible data allocation strategy, it can meet the diverse data transmission needs of different users, and by optimizing transmission path selection and coordinating transmission mechanisms, it improves the stability and reliability of the system, thereby providing smoother data transmission services.

[0008] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0009] The present invention provides a high-speed data transmission method by integrating power line carrier and OFDM wireless communication, comprising the following steps:

[0010] Step S10: Detecting the transmission quality of data of the power line carrier channel and the OFDM wireless channel, wherein the transmission quality includes the signal-to-noise ratio and the bit error rate of the power line carrier channel and the OFDM wireless channel;

[0011] Step S20: Acquire electrical parameters of the cable according to the transmission quality, the electrical parameters including resistance, inductance, and capacitance, and analyze the impact of resistance changes on the transmission quality based on the resistance;

[0012] Step S30: selecting a transmission path based on the correlation effect, wherein the selection method includes presetting a safety threshold for the signal-to-noise ratio and the bit error rate based on the change in resistance, and preferentially selecting the OFDM wireless channel as the transmission path when the signal-to-noise ratio exceeds the safety threshold and the bit error rate does not exceed the safety threshold;

[0013] When the signal-to-noise ratio does not exceed the safety threshold and the bit error rate exceeds the safety threshold, preferentially selecting the power line carrier channel as the transmission path;

[0014] When the signal-to-noise ratio and the bit error rate of the power line carrier channel and the OFDM wireless channel do not exceed the safety threshold, the transmission ratio of the data on the power line carrier channel and the OFDM wireless channel is dynamically allocated;

[0015] Step S40: In the resistance change, counting the 6 to 10 resistance values ​​with the largest number corresponding to the signal-to-noise ratio and the bit error rate exceeding the safety threshold, generating a database, and marking the 6 to 10 resistance values ​​as reference resistance values;

[0016] Step S50: Evaluate the data transmission quality of the power line carrier channel and the OFDM wireless channel based on the reference resistance value, and adjust the data transmission strategy according to the evaluation result.

[0017] As a preferred solution of the present invention, in step S20, the influence of the change in resistance on the transmission quality is analyzed based on the resistance, wherein the transmission quality of the power line carrier channel is analyzed by establishing an attenuation model of the power line carrier signal, and the attenuation model includes an exponential attenuation model, as shown below:

[0018] A(d)=A0·e -a·d ;

[0019] Where A(d) represents the signal amplitude when the transmission distance is d, A0 represents the initial signal amplitude, and a represents the attenuation coefficient.

[0020] As a preferred solution of the present invention, the analysis of the transmission quality of the OFDM wireless channel includes dividing the OFDM wireless channel into 10 to 20 subcarriers, presetting the signal frequency for each subcarrier, analyzing the impact of the change in resistance on different signal frequencies, and evaluating the impact of the change in resistance on the transmission quality based on the impact.

[0021] As a preferred solution of the present invention, in which: in the step S30, the transmission ratio of data on the power line carrier channel and the OFDM wireless channel is dynamically allocated, including allocating data according to the allocation method of data priority, dividing the data into high priority data and low priority data, and allocating the high priority data to a channel with low bit error rate and high signal-to-noise ratio; and allocating the low priority data to a channel with low signal-to-noise ratio and high bit error rate.

[0022] As a preferred solution of the present invention, the method of dynamically allocating the transmission ratio of data on the power line carrier channel and the OFDM wireless channel also includes allocating data according to a load balancing allocation method. If the load of the power line carrier channel is high, part of the data is allocated to the OFDM wireless channel; if the load of the OFDM wireless channel is high, part of the data is allocated to the power line carrier channel. The formula for allocating data according to load balancing is as follows:

[0023]

[0024] Among them, P PLCand P OFDM represent the proportion of data allocated to the power line carrier channel and OFDM wireless channel, L PLC and L OFDM They respectively represent the current load ratios of the power line carrier channel and the OFDM wireless channel.

[0025] As a preferred solution of the present invention, in step S50, the data transmission strategy is adjusted according to the evaluation results, including coordinated transmission of the data when the resistance value of the cable changes toward the reference resistance value in the future period; the coordinated transmission includes dividing the data into equal proportions, and transmitting the data after the equal proportions through the power line carrier channel and the OFDM wireless channel.

[0026] As a preferred solution of the present invention, the signal-to-noise ratio and bit error rate of data when transmitted in the power line carrier channel and the OFDM wireless channel are collected according to the change of resistance, the resistance value when the signal-to-noise ratio and the bit error rate are in a stable state is obtained, and based on the resistance value, the amount of data currently being transmitted is equally divided into data transmitted in the first time period, data transmitted in the second time period and data transmitted in the third time period, the change of resistance is collected according to the transmission time of the data transmitted in each time period, if the transmission time of the data transmitted in adjacent time periods shows an increasing trend, it is determined that the signal-to-noise ratio and the bit error rate show an increasing trend, and the data is coordinated and transmitted.

[0027] As a preferred solution of the present invention, the resistance when the transmission time shows an increasing trend is obtained during each natural day as a collection period, and the average resistance is calculated based on the resistance of at least 10 natural days. If the resistance changes towards the average resistance in the future period, it is determined that the signal-to-noise ratio and the bit error rate will show an increasing trend, and the data is coordinated and transmitted.

[0028] A terminal includes a processor, an input interface, an output interface and a memory, wherein the processor, input interface, output interface and memory are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the method described above.

[0029] A computer-readable storage medium stores a computer program, wherein the computer program includes program instructions. When the program instructions are executed by a processor, the processor is caused to execute the method described above.

[0030] Beneficial effects:

[0031] 1. By detecting the signal-to-noise ratio and bit error rate and dynamically selecting the transmission path based on the preset safety threshold, it ensures that data is transmitted on the optimal channel, thereby improving the reliability and quality of data transmission;

[0032] 2. When the signal-to-noise ratio and bit error rate of both channels do not exceed the safety threshold, the system dynamically allocates the transmission ratio to further optimize data transmission. This mechanism can fully utilize the advantages of both channels, avoid overloading or underloading a single channel, and improve the overall transmission performance of the system.

[0033] 3. By statistically analyzing the impact of resistance values ​​on the signal-to-noise ratio and bit error rate and generating a reference resistance value database, it is possible to predict the changing trend of channel quality in advance. When the resistance value changes towards the reference resistance value, the transmission strategy can be adjusted in advance, such as coordinated transmission, to effectively prevent the deterioration of the signal-to-noise ratio and bit error rate, and further improve transmission reliability.

[0034] 4. It can also dynamically allocate data according to the current load of the channel to avoid overloading of a certain channel, thereby achieving load balancing. This allocation method can fully utilize the transmission capacity of the two channels, improve the overall transmission efficiency of the system, and avoid transmission delays or packet loss caused by overloading of a single channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. Those skilled in the art can also derive other drawings based on these drawings without inventive effort. Among them:

[0036] Figure 1 Schematic diagram of a method flow in an embodiment of the present invention;

[0037] Figure 2 Schematic diagram of the process structure of an embodiment of the present invention. DETAILED DESCRIPTION

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the described embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field are within the scope of protection of the present invention.

[0039] Since existing technologies are unable to adjust data transmission strategies in a complex power network environment, the actual transmission rate drops significantly, which in turn affects the user experience.

[0040] Based on this, the present invention proposes a high-speed data transmission method that integrates power line carrier and OFDM wireless. Through a flexible data allocation strategy, it can meet the diverse data transmission needs of different users, and by optimizing the transmission path selection and coordinating the transmission mechanism, it improves the stability and reliability of the system, thereby providing smoother data transmission services.

[0041] The present invention will be further described in detail below through embodiments and in conjunction with the accompanying drawings.

[0042] Reference Figures 1 to 2 , is an embodiment of the present invention, which provides a high-speed data transmission method for wireless integration of power line carrier and OFDM, including the following steps:

[0043] Step S10: Detecting the transmission quality of data on the power line carrier channel and the OFDM wireless channel, where the transmission quality includes the signal-to-noise ratio and the bit error rate of the power line carrier channel and the OFDM wireless channel;

[0044] Step S20: Obtaining electrical parameters of the cable based on the transmission quality, the electrical parameters including resistance, inductance, and capacitance, and analyzing the impact of resistance changes on the transmission quality based on the resistance;

[0045] Step S30: selecting a transmission path based on the correlation effect, wherein the selection method includes presetting safety thresholds for the signal-to-noise ratio and the bit error rate based on the change in resistance. When the signal-to-noise ratio exceeds the safety threshold and the bit error rate does not exceed the safety threshold, the OFDM wireless channel is preferentially selected as the transmission path.

[0046] When the signal-to-noise ratio does not exceed the safety threshold and the bit error rate exceeds the safety threshold, the power line carrier channel is preferentially selected as the transmission path;

[0047] When the signal-to-noise ratio and bit error rate of the power line carrier channel and the OFDM wireless channel do not exceed the safety threshold, the data transmission ratio on the power line carrier channel and the OFDM wireless channel is dynamically allocated;

[0048] In this embodiment, in reality, resistance has the greatest impact on transmission quality in a power line carrier channel and is a key factor limiting transmission distance and signal strength. Therefore, this embodiment uses resistance as a basis to analyze the impact of resistance changes on transmission quality, which has practical significance.

[0049] Step S40: Counting the 6 to 10 resistance values ​​with the most signal-to-noise ratio and bit error rate exceeding the safety threshold during the resistance change, generating a database, and marking the 6 to 10 resistance values ​​as reference resistance values;

[0050] Step S50: Evaluate the data transmission quality of the power line carrier channel and the OFDM wireless channel based on the reference resistance value, and adjust the data transmission strategy according to the evaluation result.

[0051] In step S20, the influence of the resistance change on the transmission quality is analyzed based on the resistance. The transmission quality of the power line carrier channel is analyzed by establishing an attenuation model of the power line carrier signal. The attenuation model includes an exponential attenuation model as shown below:

[0052] A(d)=A0·e -a·d ;

[0053] Where A(d) represents the signal amplitude when the transmission distance is d, A0 represents the initial signal amplitude, and a represents the attenuation coefficient.

[0054] In this embodiment, by establishing an attenuation model of the power line carrier signal, the impact of resistance on transmission quality is analyzed based on resistance, providing a basis for subsequent transmission path selection and strategy adjustment;

[0055] This enables a more accurate assessment of the transmission quality of the power line carrier channel, leading to more reasonable data allocation and transmission path selection;

[0056] Based on the above, the transmission quality of the OFDM wireless channel is analyzed. This includes dividing the OFDM wireless channel into 10 to 20 subcarriers, presetting the signal frequency for each subcarrier, analyzing the impact of changes in resistance on different signal frequencies, and based on this impact, evaluating the impact of changes in resistance on transmission quality.

[0057] In this embodiment, the OFDM wireless channel is divided into multiple subcarriers and the impact of resistance changes on different signal frequencies is analyzed. This can more carefully evaluate the transmission quality of the OFDM wireless channel and help to more accurately adjust data allocation and transmission strategies.

[0058] In step S30, the transmission ratio of data on the power line carrier channel and the OFDM wireless channel is dynamically allocated, including allocating data according to the allocation method of data priority, dividing the data into high priority data and low priority data, allocating high priority data to the channel with low bit error rate and high signal-to-noise ratio; and allocating low priority data to the channel with low signal-to-noise ratio and high bit error rate;

[0059] In this embodiment, high priority data, such as real-time video stream;

[0060] Low-priority data, such as non-real-time file transfers;

[0061] In this embodiment, the concept of data priority is used to allocate data to different channels based on its importance and urgency, ensuring that high-priority data is transmitted first. This improves the flexibility and adaptability of the system, better meets the data transmission needs of different users, and enhances the user experience.

[0062] Furthermore, the dynamic allocation of the transmission ratio of data on the power line carrier channel and the OFDM wireless channel also includes allocation based on load balancing. If the load of the power line carrier channel is high, some data is allocated to the OFDM wireless channel; if the load of the OFDM wireless channel is high, some data is allocated to the power line carrier channel. The formula for allocation based on load balancing is as follows:

[0063]

[0064] Among them, P PLC and P OFDM They represent the proportion of data allocated to the power line carrier channel and the OFDM wireless channel, L PLC and L OFDM Represent the current load ratios of the power line carrier channel and OFDM wireless channel respectively;

[0065] In this embodiment, a load-balancing distribution method is used to dynamically distribute data based on the current load of the channel, thereby avoiding the overload problem of a certain channel. This improves the overall transmission efficiency of the system, fully utilizes the transmission capacity of both channels, and avoids resource waste.

[0066] In step S50, the data transmission strategy is adjusted based on the evaluation result, including coordinated transmission of the data when the resistance value of the cable changes toward the reference resistance value in the future period; the coordinated transmission includes dividing the data into equal proportions and transmitting the divided data through the power line carrier channel and the OFDM wireless channel;

[0067] In this embodiment, when the resistance value changes toward the reference resistance value, a coordinated transmission method is adopted to divide the data into equal proportions and transmit them through two channels, thereby further improving the reliability and stability of the transmission.

[0068] This effectively prevents the deterioration of signal-to-noise ratio and bit error rate caused by resistance changes from affecting data transmission, and enhances the system's anti-interference capability.

[0069] Based on the above, the signal-to-noise ratio and bit error rate of data during transmission over a power line carrier channel and an OFDM wireless channel are collected based on changes in resistance, and the resistance value at which the signal-to-noise ratio and bit error rate are stable is obtained. Based on the resistance value, the amount of data currently being transmitted is equally divided into data transmitted in a first time period, data transmitted in a second time period, and data transmitted in a third time period. Changes in resistance are collected based on the transmission time of data transmitted in each time period. If the transmission time of data transmitted in adjacent time periods shows an increasing trend, it is determined that the signal-to-noise ratio and bit error rate are showing an increasing trend, and data transmission is coordinated.

[0070] In this embodiment, by real-time monitoring and analysis of resistance changes, it is possible to promptly discover the changing trends of the signal-to-noise ratio and bit error rate, and adjust the transmission strategy accordingly;

[0071] This improves the system's adaptability and flexibility, enabling it to better cope with complex channel environments and dynamically changing transmission requirements;

[0072] The resistance is collected every natural day when the transmission time increases. The average resistance is calculated based on the resistance of at least 10 natural days. If the resistance changes toward the average resistance in the future, the signal-to-noise ratio and bit error rate are determined to be increasing, and data transmission is coordinated.

[0073] In this embodiment, the natural day is used as the collection period, and the average resistance is calculated based on the resistance data of multiple natural days, which further improves the prediction accuracy of the resistance change trend;

[0074] This enables the system to more accurately predict changes in signal-to-noise ratio and bit error rate, and take measures such as coordinated transmission in advance.

[0075] A terminal includes a processor, an input interface, an output interface and a memory, wherein the processor, input interface, output interface and memory are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the method described above.

[0076] A computer-readable storage medium stores a computer program, wherein the computer program includes program instructions. When the program instructions are executed by a processor, the processor is caused to execute the method described above.

[0077] In summary,

[0078] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit the present invention. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A high-speed data transmission method combining power line carrier and OFDM wireless communication, characterized in that: The following steps are involved: Step S10: Detecting the transmission quality of data of the power line carrier channel and the OFDM wireless channel, wherein the transmission quality includes the signal-to-noise ratio and the bit error rate of the power line carrier channel and the OFDM wireless channel; Step S20: Acquire electrical parameters of the cable according to the transmission quality, the electrical parameters including resistance, inductance, and capacitance, and analyze the impact of resistance changes on the transmission quality based on the resistance; Step S30: selecting a transmission path based on the correlation effect, wherein the selection method includes presetting a safety threshold for the signal-to-noise ratio and the bit error rate based on the change in resistance, and preferentially selecting the OFDM wireless channel as the transmission path when the signal-to-noise ratio exceeds the safety threshold and the bit error rate does not exceed the safety threshold; When the signal-to-noise ratio does not exceed the safety threshold and the bit error rate exceeds the safety threshold, preferentially selecting the power line carrier channel as the transmission path; When the signal-to-noise ratio and the bit error rate of the power line carrier channel and the OFDM wireless channel do not exceed the safety threshold, the transmission ratio of the data on the power line carrier channel and the OFDM wireless channel is dynamically allocated; Step S40: In the resistance change, counting the 6 to 10 resistance values ​​with the largest number corresponding to the signal-to-noise ratio and the bit error rate exceeding the safety threshold, generating a database, and marking the 6 to 10 resistance values ​​as reference resistance values; Step S50: Evaluate the data transmission quality of the power line carrier channel and the OFDM wireless channel based on the reference resistance value, and adjust the data transmission strategy according to the evaluation result.

2. The high-speed data transmission method of power line carrier and OFDM wireless fusion according to claim 1, characterized in that: In step S20, the influence of the resistance change on the transmission quality is analyzed based on the resistance. The transmission quality of the power line carrier channel is analyzed by establishing an attenuation model of the power line carrier signal. The attenuation model includes an exponential attenuation model as shown below: A(d)=A0·e -a·d ; Where A(d) represents the signal amplitude when the transmission distance is d, A0 represents the initial signal amplitude, and a represents the attenuation coefficient.

3. The high-speed data transmission method of power line carrier and OFDM wireless fusion according to claim 2, characterized in that: The analysis of the transmission quality of an OFDM wireless channel includes dividing the OFDM wireless channel into 10 to 20 subcarriers, presetting a signal frequency for each subcarrier, analyzing the effect of a change in resistance on different signal frequencies, and evaluating the effect of the change in resistance on the transmission quality based on the effect.

4. The high-speed data transmission method of power line carrier and OFDM wireless fusion according to claim 1, characterized in that: In the step S30, the transmission ratio of data on the power line carrier channel and the OFDM wireless channel is dynamically allocated, including allocating data according to the data priority allocation method, dividing the data into high priority data and low priority data, and allocating the high priority data to the channel with low bit error rate and high signal-to-noise ratio; and allocating the low priority data to the channel with low signal-to-noise ratio and high bit error rate.

5. The high-speed data transmission method of power line carrier and OFDM wireless fusion according to claim 4, characterized in that: Dynamically allocating the transmission ratio of data on the power line carrier channel and the OFDM wireless channel also includes allocating data according to a load balancing allocation method. If the load of the power line carrier channel is high, some data is allocated to the OFDM wireless channel; if the load of the OFDM wireless channel is high, some data is allocated to the power line carrier channel. The formula for allocation according to load balancing is as follows: Among them, P PLC and P OFDM represent the proportion of data allocated to the power line carrier channel and OFDM wireless channel, L PLC and L OFDM They respectively represent the current load ratios of the power line carrier channel and the OFDM wireless channel.

6. The high-speed data transmission method of wireless fusion of power line carrier and OFDM according to claim 1, characterized in that: In step S50, the data transmission strategy is adjusted according to the evaluation results, including coordinated transmission of the data when the resistance value of the cable changes toward the reference resistance value in the future period; the coordinated transmission includes proportionally dividing the data and transmitting the proportionally divided data through the power line carrier channel and the OFDM wireless channel.

7. The high-speed data transmission method of wireless fusion of power line carrier and OFDM according to claim 6, characterized in that: The signal-to-noise ratio and bit error rate of data during transmission over the power line carrier channel and the OFDM wireless channel are collected based on the change in resistance, and the resistance value when the signal-to-noise ratio and the bit error rate are in a stable state is obtained. Based on the resistance value, the amount of data currently being transmitted is equally divided into data transmitted in a first time period, data transmitted in a second time period, and data transmitted in a third time period. The change in resistance is collected based on the transmission time of the data transmitted in each time period. If the transmission time of the data transmitted in adjacent time periods shows an increasing trend, it is determined that the signal-to-noise ratio and the bit error rate show an increasing trend, and the data is transmitted in a coordinated manner.

8. The high-speed data transmission method of wireless fusion of power line carrier and OFDM according to claim 7, characterized in that: The resistance when the transmission time shows an increasing trend is obtained during each natural day as a collection period, and the average resistance is calculated based on the resistance of at least 10 natural days. If the resistance changes towards the average resistance in the future period, it is determined that the signal-to-noise ratio and bit error rate will show an increasing trend, and the data is coordinated for transmission.

9. A terminal, characterized in that: The method comprises a processor, an input interface, an output interface and a memory, wherein the processor, the input interface, the output interface and the memory are interconnected, wherein the memory is used to store a computer program, the computer program includes program instructions, and the processor is configured to call the program instructions to execute the method according to any one of claims 1 to 8.

10. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, wherein the computer program includes program instructions. When the program instructions are executed by a processor, the processor is caused to perform the method according to any one of claims 1 to 8.

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