High-bandwidth power line communication method based on carrier aggregation technology

Abstract

The present invention relates to the field of communication technology, and in particular to a high-bandwidth power line communication method based on carrier aggregation technology. The present invention obtains the frequency band subcarriers corresponding to information transmission of each load, determines the delay parameter to determine the delay margin trend of the frequency band subcarrier, and determines the delay performance category of power line communication based on the unstable trend frequency band subcarrier to select the transmission optimization method for data to be transmitted, including: selecting the load for frequency band subcarrier adjustment based on the amount of data to be transmitted of the load of each unstable trend frequency band subcarrier, and aggregating several unstable trend frequency band subcarriers into optimized subcarriers, or determining the characteristic load corresponding to each unstable trend frequency band subcarrier, and adjusting the start time of the characteristic load, thereby realizing the optimization of data transmission method according to the delay situation and load demand of different subcarriers, and improving the overall performance and resource utilization of the power line communication system.

Description

Technical Field

[0001] The present invention relates to the field of communication technology, and in particular to a high-bandwidth power line communication method based on carrier aggregation technology. Background Art

[0002] With the rapid development of the Internet of Things, smart homes, smart grids and other fields, power line communication has gradually expanded from its initial application in the fields of dispatching communication, production command, administrative business communication and other fields of the power system to home automation, smart buildings and community LAN access. The demand for high-bandwidth and reliable communication technology is increasing. High-bandwidth power line communication can realize remote monitoring, data collection, smart metering and other functions of power equipment, providing people with a more convenient communication method. However, power lines were originally used to transmit electrical energy. There are a large number of electrical equipment around them, which will generate various noise interferences during operation, including corona noise and pulse noise. These problems have brought challenges to the application of high-bandwidth power line communication. Therefore, improving the speed and efficiency of data transmission in power line communication systems is a technical problem that needs to be solved urgently.

[0003] For example, the Chinese patent authorization announcement number is: CN115314180B. This invention discloses a power line communication method, system, device and medium based on carrier aggregation. When user line data is received, the carrier communication channel and the corresponding multiple initial subcarriers are determined based on the user line data. The line topology structure corresponding to the user line data is connected to the carrier communication channel, and it is determined whether the user line data is less than the preset structure threshold. If so, carrier screening is performed after quantum encoding of the initial subcarrier to obtain the target subcarrier corresponding to the carrier communication channel. If not, quantum encoding is performed after carrier screening of the initial subcarrier to obtain the target subcarrier corresponding to the carrier communication channel.

[0004] The prior art still has the following problems:

[0005] The existing technology cannot optimize the data transmission mode of carrier aggregation according to the delay and load requirements of different subcarriers, and reasonably adjust the load distribution, which affects the speed and efficiency of data transmission, as well as the overall performance and resource utilization of the power line communication system. Summary of the invention

[0006] To this end, the present invention provides a high-bandwidth power line communication method based on carrier aggregation technology to overcome the problem that the prior art cannot optimize the data transmission mode of carrier aggregation according to the delay conditions and load requirements of different subcarriers, affecting the speed and efficiency of data transmission, as well as the overall performance and resource utilization of the power line communication system.

[0007] To achieve the above object, the present invention provides a high-bandwidth power line communication method based on carrier aggregation technology, comprising:

[0008] Obtaining frequency band subcarriers corresponding to information transmission of each load, and determining delay parameters of the frequency band subcarriers, wherein the delay parameters include historical delay parameters and recent delay parameters;

[0009] Determine the delay margin trend of the subcarriers in the frequency band based on the comparison of the delay parameters, wherein the delay margin trend includes a stable trend and an unstable trend, and determine the delay performance category of the power line communication based on the number of subcarriers in the frequency band with an unstable trend;

[0010] The transmission optimization method of the data to be transmitted is selected based on different delay performance categories, including:

[0011] Selecting a load for adjusting the frequency band subcarrier based on the amount of data to be transmitted corresponding to each non-stable trend frequency band subcarrier, changing the frequency band subcarrier corresponding to the load to a characteristic subcarrier, and aggregating a number of non-stable trend frequency band subcarriers into an optimized subcarrier, wherein the characteristic subcarrier is determined according to the comparison of delay parameters of the stable trend frequency band subcarriers;

[0012] Or, determine the characteristic load corresponding to each non-stable trend frequency band subcarrier, and adjust the start time of the characteristic load so that only the characteristic load is started at the start time.

[0013] Furthermore, the delay parameter includes a signal delay for each load to complete a number of signal transmissions, and the signal delay is a time difference between a transmission time and a reception time of the data of the load.

[0014] Furthermore, the process of determining the delay margin trend includes:

[0015] If the comparison of the delay parameters meets the signal delay stability condition, determining that the delay margin trend of the frequency band subcarrier corresponding to the delay parameters is a stable trend;

[0016] If the comparison of the delay parameters does not meet the signal delay stability condition, it is determined that the delay margin trend of the frequency band subcarrier corresponding to the delay parameters is an unstable trend.

[0017] Furthermore, the signal delay stability condition is that the difference between the average value of the historical delay parameters and the average value of the recent delay parameters does not exceed a preset difference threshold.

[0018] Further, the process of determining the delay performance category of the power line communication includes:

[0019] If the comparison of the number of subcarriers in the non-stable trend frequency band meets the signal delay aggregation condition, determining that the delay performance category of the power line communication is a delay aggregation performance category;

[0020] If the comparison of the number of subcarriers in the non-stable trend frequency band does not meet the signal delay aggregation condition, determining that the delay performance category of the power line communication is a delay non-aggregation performance category;

[0021] The signal delay aggregation condition is that the proportion of the number of subcarriers in the frequency band with a non-stable trend to the total number of subcarriers in the frequency band for information transmission of each load does not exceed a preset proportion threshold.

[0022] Furthermore, the process of selecting a transmission optimization method for data to be transmitted includes:

[0023] If the delay performance category of the power line communication is the delay aggregation performance category, the transmission optimization method for selecting the data to be transmitted is to select the load for frequency band subcarrier adjustment based on the amount of data to be transmitted corresponding to each non-stable trend frequency band subcarrier, change the frequency band subcarrier corresponding to the load to a characteristic subcarrier, and aggregate several non-stable trend frequency band subcarriers into an optimized subcarrier;

[0024] If the delay performance category of the power line communication is the delay non-aggregated performance category, the transmission optimization method for selecting the data to be transmitted is to determine the characteristic load corresponding to each non-stable trend frequency band subcarrier, and adjust the start-up time of the characteristic load so that the start-up time only completes the start-up of the characteristic load.

[0025] Further, when the delay performance category of the power line communication is a delay aggregation performance category, the process of selecting a load for frequency band subcarrier adjustment includes:

[0026] Obtaining the amount of data to be transmitted for each load corresponding to each subcarrier in the non-stable trend frequency band;

[0027] The load corresponding to the maximum value of the amount of data to be transmitted is determined as the load for adjusting the frequency band subcarriers.

[0028] Furthermore, the process of determining the characteristic subcarrier includes:

[0029] Obtain the delay parameters of the subcarriers in the stable trend frequency band;

[0030] A frequency band subcarrier corresponding to a minimum value of a difference between an average value of a historical delay parameter and an average value of a recent delay parameter of the delay parameter is determined as a characteristic subcarrier.

[0031] Further, when the delay performance category of the power line communication is a delay non-aggregation performance category, the characteristic load of each non-steady trend frequency band subcarrier is determined based on the amount of data to be transmitted of the load corresponding to each non-steady trend frequency band subcarrier;

[0032] The load corresponding to the maximum amount of data to be transmitted is determined as the characteristic load of the subcarrier of the frequency band.

[0033] Furthermore, the process of adjusting the start time of the characteristic load includes:

[0034] Obtaining a delay parameter of a frequency band subcarrier corresponding to the characteristic load;

[0035] adjusting the start time of the characteristic load based on the difference of the delay parameter;

[0036] The difference of the delay parameters is the difference between the average value of the historical delay parameters and the average value of the recent delay parameters, and the delay time for delaying the start time is positively correlated with the difference.

[0037] Compared with the prior art, the beneficial effect of the present invention lies in that the present invention obtains the frequency band subcarriers corresponding to information transmission of each load, determines the delay parameters of the frequency band subcarriers to determine the delay margin trend of the frequency band subcarriers, determines the delay performance category of the power line communication based on the number of unstable trend frequency band subcarriers, and selects the transmission optimization method of the data to be transmitted based on the delay performance category, including selecting the load for frequency band subcarrier adjustment based on the amount of data to be transmitted of the load corresponding to each unstable trend frequency band subcarrier, changing the frequency band subcarrier corresponding to the load to a characteristic subcarrier, and aggregating several unstable trend frequency band subcarriers into an optimized subcarrier, or determining the characteristic load corresponding to each unstable trend frequency band subcarrier, adjusting the start-up time of the characteristic load so that only the characteristic load is started at the start-up time, thereby realizing the optimization of data transmission method according to the delay conditions and load requirements of different subcarriers, improving the speed and efficiency of data transmission, and the overall performance and resource utilization of the power line communication system.

[0038] In particular, the delay parameters obtained by the present invention include historical delay parameters and recent delay parameters. Those skilled in the art can understand that the historical delay parameters can reflect the signal transmission characteristics of the power line communication system over a long period of time, and the recent delay parameters can reflect the current state of the power line communication system. Since the power line communication environment may change rapidly over time, the recent delay parameters can more accurately reflect the changing trend of the current signal transmission situation. The environment faced by the power line communication system is dynamically changing, and factors such as the load, noise, and interference on the power line will continue to change. These changes will directly affect the signal delay. Relying solely on the delay parameters at a single time point cannot accurately reflect the actual situation of the power line communication system. It is necessary to comprehensively consider the historical and recent delay parameters to adapt to this dynamically changing environment, thereby achieving accurate reflection of the actual situation of the power line communication system, better adapting to the dynamic changes of the power line communication system, and thus optimizing the performance of the communication system.

[0039] In particular, when the delay performance category of power line communication is a delay aggregation performance category, the present invention changes the current frequency band subcarrier of the selected load to a characteristic subcarrier. Those skilled in the art can understand that when the delay aggregation performance category appears, it is characterized that the individual frequency band subcarriers have an unstable trend, which will affect the data transmission efficiency on these subcarriers. When the amount of data to be transmitted of the load corresponding to the unstable trend frequency band subcarrier is too large, it will lead to slow data transmission, long response time, and even data loss. By changing the load with a large amount of data to be transmitted to the characteristic subcarrier with the best stable trend, the impact of the unstable trend frequency band subcarrier on data transmission can be avoided, and the performance of the entire power line communication system can be improved. Furthermore, the optimal allocation of power line communication system resources is achieved, the distribution of loads is reasonably adjusted, and the speed and efficiency of data transmission are improved.

[0040] In particular, the present invention combines several non-stable trend frequency band subcarriers into optimized subcarriers. Those skilled in the art can understand that multiple subcarriers that have low communication efficiency due to delays, interference and other problems are combined into high-bandwidth optimized subcarriers, bandwidth resources are integrated, and a larger total bandwidth is provided. By combining them into high-bandwidth optimized subcarriers and utilizing multipath transmission, the signal transmission time is reduced, thereby reducing delays, and further realizing a method for optimizing data transmission, improving the speed and efficiency of data transmission, and the overall performance and resource utilization of the power line communication system.

[0041] In particular, when the delay performance category of the power line communication of the present invention is a delay non-aggregation performance category, the characteristic load corresponding to each non-stable trend frequency band subcarrier is determined by the maximum value of the amount of data to be transmitted. Those skilled in the art can understand that when the delay non-aggregation performance category appears, it is characterized by a large number of frequency band subcarriers having delay phenomena, indicating that the entire power line communication system is in a more complex state. By determining the maximum value of the amount of data to be transmitted of the load corresponding to each non-stable trend frequency band subcarrier, the load with the most prominent impact on the data transmission efficiency of each frequency band subcarrier can be quickly identified, and it can be processed and optimized with priority, thereby improving the speed and efficiency of data transmission and the performance of the entire power line communication system.

[0042] In particular, the present invention adjusts the start time of the characteristic load through the difference in delay parameters. Those skilled in the art can understand that by obtaining the delay parameters, the delay of the subcarriers in the frequency band where the load is located can be quantified. The larger the difference in the delay parameters, the longer the data transmission time. The start time of the characteristic load is adjusted according to the difference in the delay parameters, thereby improving the speed and efficiency of data transmission and the overall communication performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] Figure 1 This is a step diagram of a high-bandwidth power line communication method based on carrier aggregation technology according to an embodiment of the present invention;

[0044] Figure 2 A logic flow chart for determining a delay margin trend according to an embodiment of the present invention;

[0045] Figure 3 A logic flow chart for determining a delay performance category of power line communication according to an embodiment of the present invention;

[0046] Figure 4 A logic flow chart of a transmission optimization method for selecting data to be transmitted according to an embodiment of the present invention. DETAILED DESCRIPTION

[0047] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0048] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0049] It should be noted that, in the description of the present invention, terms such as "upper", "lower", "inside" and "outside" indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings. This is only for the convenience of description and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it cannot be understood as a limitation on the present invention.

[0050] See also Figure 1 As shown, it is a step diagram of a high-bandwidth power line communication method based on carrier aggregation technology in an embodiment of the present invention. The high-bandwidth power line communication method based on carrier aggregation technology of the present invention includes:

[0051] Step S100, obtaining the frequency band subcarriers corresponding to the information transmission of each load, and determining the delay parameters of the frequency band subcarriers, wherein the delay parameters include historical delay parameters and recent delay parameters;

[0052] Specifically, the time period of the historical delay parameters and the time period of the recent delay parameters can be set by technical personnel in this field according to the application scenario of the power line communication system. The higher the requirements of the application scenario for data transmission speed and efficiency, the longer the time period of the historical delay parameters and the recent delay parameters are set. Preferably, the time period of the historical delay parameters can range from [15, 25], with the interval unit being days, and the time period of the recent delay parameters can range from [12, 24], with the interval unit being h.

[0053] Specifically, the delay parameters obtained by the present invention include historical delay parameters and recent delay parameters. Those skilled in the art can understand that the historical delay parameters can reflect the signal transmission characteristics of the power line communication system over a long period of time, and the recent delay parameters can reflect the current state of the power line communication system. Since the power line communication environment may change rapidly over time, the recent delay parameters can more accurately reflect the changing trend of the current signal transmission situation. The environment faced by the power line communication system is dynamically changing, and factors such as the load, noise, and interference on the power line will continue to change. These changes will directly affect the signal delay. Relying solely on the delay parameters at a single time point cannot accurately reflect the actual situation of the power line communication system. It is necessary to comprehensively consider the historical and recent delay parameters to adapt to this dynamically changing environment, thereby achieving accurate reflection of the actual situation of the power line communication system, better adapting to the dynamic changes of the power line communication system, and thus optimizing the performance of the communication system.

[0054] Step S200, determining the delay margin trend of the frequency band subcarrier based on the comparison of the delay parameters, wherein the delay margin trend includes a stable trend and an unstable trend, and determining the delay performance category of the power line communication based on the number of frequency band subcarriers with an unstable trend;

[0055] Step S300, selecting a transmission optimization method for data to be transmitted based on different delay performance categories, including:

[0056] Selecting a load for adjusting the frequency band subcarrier based on the amount of data to be transmitted corresponding to each non-stable trend frequency band subcarrier, changing the frequency band subcarrier corresponding to the load to a characteristic subcarrier, and aggregating a number of non-stable trend frequency band subcarriers into an optimized subcarrier, wherein the characteristic subcarrier is determined according to the comparison of delay parameters of the stable trend frequency band subcarriers;

[0057] Or, determine the characteristic load corresponding to each non-stable trend frequency band subcarrier, and adjust the start time of the characteristic load so that only the characteristic load is started at the start time.

[0058] Specifically, the present invention does not limit the specific method of obtaining the amount of data to be transmitted of the load. Preferably, the load conditions on the subcarriers of each frequency band can be monitored through the built-in data statistics function of the modem and the router, which will not be repeated here.

[0059] Specifically, the present invention does not limit the implementation method of merging several non-stable trend frequency band subcarriers into optimized subcarriers. Preferably, the frequency band subcarriers can be merged through the built-in frequency division multiplexing and time division multiplexing functions of the power line communication equipment, which will not be repeated here.

[0060] Specifically, carrier aggregation technology can combine multiple different carrier subcarriers together to increase the bandwidth of power line communication. The aggregated high-bandwidth carriers can transmit data simultaneously, increasing the total amount and speed of data transmission.

[0061] Specifically, the present invention combines several non-stable trend frequency band subcarriers into optimized subcarriers. Those skilled in the art can understand that multiple subcarriers that have low communication efficiency due to delays, interference and other problems are combined into high-bandwidth optimized subcarriers, bandwidth resources are integrated, and a larger total bandwidth is provided. By combining them into high-bandwidth optimized subcarriers and utilizing multipath transmission, the signal transmission time is reduced, thereby reducing delays, and further realizing a method for optimizing data transmission, improving the speed and efficiency of data transmission, and the overall performance and resource utilization of the power line communication system.

[0062] Specifically, the delay parameter includes the signal delay of each load completing a number of signal transmissions, and the signal delay is the time difference between the transmission time and the reception time of the data of the load.

[0063] Specifically, the present invention does not limit the method for determining the sending time and the receiving time. Preferably, the sending time can be determined by the hardware timer of the power line communication chip, and the receiving time can be determined by the receiving completion flag set in the power line communication system. This is the prior art.

[0064] Specifically, see Figure 2 FIG. 1 is a logic flow chart for determining a delay margin trend according to an embodiment of the present invention. The process of determining the delay margin trend includes:

[0065] If the comparison of the delay parameters meets the signal delay stability condition, determining that the delay margin trend of the frequency band subcarrier corresponding to the delay parameters is a stable trend;

[0066] If the comparison of the delay parameters does not meet the signal delay stability condition, it is determined that the delay margin trend of the frequency band subcarrier corresponding to the delay parameters is an unstable trend.

[0067] Specifically, the signal delay stability condition is that the difference between the average value of the historical delay parameters and the average value of the recent delay parameters does not exceed a preset difference threshold.

[0068] Specifically, the preset difference threshold can be set by technical personnel in this field based on historical data of the application scenario of the power line communication system. The higher the communication performance requirement required by the application scenario, the smaller the set difference threshold. Preferably, the value range of the difference threshold can be [50, 90], and the interval unit is ms.

[0069] Specifically, see Figure 3As shown, it is a logic flow chart of determining the delay performance category of power line communication according to an embodiment of the present invention. The process of determining the delay performance category of power line communication includes:

[0070] If the comparison of the number of subcarriers in the non-stable trend frequency band meets the signal delay aggregation condition, determining that the delay performance category of the power line communication is a delay aggregation performance category;

[0071] If the comparison of the number of subcarriers in the non-stable trend frequency band does not meet the signal delay aggregation condition, determining that the delay performance category of the power line communication is a delay non-aggregation performance category;

[0072] The signal delay aggregation condition is that the proportion of the number of subcarriers in the frequency band with a non-stable trend to the total number of subcarriers in the frequency band for information transmission of each load does not exceed a preset proportion threshold.

[0073] Specifically, the preset proportion threshold can be set by technical personnel in this field according to the optimization efficiency requirements of data transmission in the current power line communication application scenario. The higher the optimization efficiency requirement, the larger the set proportion threshold. Preferably, the value range of the proportion threshold can be [0.25, 0.4].

[0074] Specifically, see Figure 4 As shown, it is a logical flow chart of a transmission optimization method for selecting data to be transmitted according to an embodiment of the present invention. The process of selecting a transmission optimization method for data to be transmitted includes:

[0075] If the delay performance category of the power line communication is the delay aggregation performance category, the transmission optimization method for selecting the data to be transmitted is to select the load for frequency band subcarrier adjustment based on the amount of data to be transmitted corresponding to each non-stable trend frequency band subcarrier, change the frequency band subcarrier corresponding to the load to a characteristic subcarrier, and aggregate several non-stable trend frequency band subcarriers into an optimized subcarrier;

[0076] If the delay performance category of the power line communication is the delay non-aggregated performance category, the transmission optimization method for selecting the data to be transmitted is to determine the characteristic load corresponding to each non-stable trend frequency band subcarrier, and adjust the start-up time of the characteristic load so that the start-up time only completes the start-up of the characteristic load.

[0077] Specifically, the present invention does not limit the specific method of changing the frequency band subcarrier corresponding to the load to the characteristic subcarrier. Preferably, it can be an automatic switching mechanism built into the power line communication device, which is configured and enabled through the management interface of the device.

[0078] Specifically, when the delay performance category of power line communication is a delay aggregation performance category, the present invention changes the current frequency band subcarrier of the selected load to a characteristic subcarrier. Those skilled in the art can understand that when the delay aggregation performance category appears, it indicates that the individual frequency band subcarriers have an unstable trend, which will affect the transmission efficiency of data on these subcarriers. When the amount of data to be transmitted of the load corresponding to the unstable trend frequency band subcarrier is too large, it will lead to slow data transmission, long response time, and even data loss. By changing the load with a large amount of data to be transmitted to the characteristic subcarrier with the best stable trend, the influence of the unstable trend frequency band subcarrier on data transmission can be avoided, and the performance of the entire power line communication system can be improved. Furthermore, the optimal allocation of power line communication system resources is achieved, the distribution of loads is reasonably adjusted, and the speed and efficiency of data transmission are improved.

[0079] Specifically, when the delay performance category of the power line communication is the delay aggregation performance category, the process of selecting the load for frequency band subcarrier adjustment includes:

[0080] Obtaining the amount of data to be transmitted for each load corresponding to each subcarrier in the non-stable trend frequency band;

[0081] The load corresponding to the maximum value of the amount of data to be transmitted is determined as the load for adjusting the frequency band subcarriers.

[0082] Specifically, the process of determining the characteristic subcarrier includes:

[0083] Obtain the delay parameters of the subcarriers in the stable trend frequency band;

[0084] A frequency band subcarrier corresponding to a minimum value of a difference between an average value of a historical delay parameter and an average value of a recent delay parameter of the delay parameter is determined as a characteristic subcarrier.

[0085] Specifically, when the delay performance category of the power line communication is a delay non-aggregation performance category, the characteristic load of each non-steady trend frequency band subcarrier is determined based on the amount of data to be transmitted of the load corresponding to each non-steady trend frequency band subcarrier;

[0086] The load corresponding to the maximum amount of data to be transmitted is determined as the characteristic load of the subcarrier of the frequency band.

[0087] In a specific embodiment, the amount of data to be transmitted of loads X, Y, and Z corresponding to the non-stable trend frequency band subcarrier A is obtained, wherein the amount of data to be transmitted of load X is 100MB, the amount of data to be transmitted of load Y is 150MB, and the amount of data to be transmitted of load Z is 80MB. Since the amount of data to be transmitted of load Y is the largest, load Y is determined as the characteristic load of frequency band subcarrier A.

[0088] Specifically, when the delay performance category of the power line communication is a delay non-aggregation performance category, the present invention determines the characteristic load corresponding to each non-stable trend frequency band subcarrier by the maximum value of the amount of data to be transmitted. Those skilled in the art can understand that when the delay non-aggregation performance category appears, it is characterized by a large number of frequency band subcarriers having delays, indicating that the entire power line communication system is in a more complex state. By determining the maximum value of the amount of data to be transmitted of the load corresponding to each non-stable trend frequency band subcarrier, the load that has the most prominent impact on the data transmission efficiency of each frequency band subcarrier can be quickly identified, and it can be processed and optimized with priority, thereby improving the speed and efficiency of data transmission and the performance of the entire power line communication system.

[0089] Specifically, the process of adjusting the start time of the characteristic load includes:

[0090] Obtaining a delay parameter of a frequency band subcarrier corresponding to the characteristic load;

[0091] adjusting the start time of the characteristic load based on the difference of the delay parameter;

[0092] The difference of the delay parameters is the difference between the average value of the historical delay parameters and the average value of the recent delay parameters, and the delay time for delaying the start time is positively correlated with the difference.

[0093] Specifically, the present invention adjusts the start time of the characteristic load through the difference in delay parameters. Those skilled in the art can understand that by obtaining the delay parameters, the delay of the subcarrier in the frequency band where the load is located can be quantified. The larger the difference in the delay parameters, the longer the data transmission time. The start time of the characteristic load is adjusted according to the difference in the delay parameters, thereby improving the speed and efficiency of data transmission and the overall communication performance.

[0094] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

[0095] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A high-bandwidth power line communication method based on carrier aggregation technology, characterized in that: include: Obtaining a frequency band subcarrier for each load to transmit information, and determining a delay parameter of the frequency band subcarrier, wherein the delay parameter includes a historical delay parameter and a recent delay parameter; Determine the delay margin trend of the subcarriers in the frequency band based on the comparison of the delay parameters, wherein the delay margin trend includes a stable trend and an unstable trend, and determine the delay performance category of the power line communication based on the number of subcarriers in the frequency band with an unstable trend; Select the transmission optimization method for the data to be transmitted based on different delay performance categories, include, Selecting a load for adjusting the frequency band subcarrier based on the amount of data to be transmitted corresponding to each non-stable trend frequency band subcarrier, changing the frequency band subcarrier corresponding to the load to a characteristic subcarrier, and aggregating a number of non-stable trend frequency band subcarriers into an optimized subcarrier, wherein the characteristic subcarrier is determined according to the comparison of delay parameters of the stable trend frequency band subcarriers; Or, determine the characteristic load corresponding to each non-stable trend frequency band subcarrier, and adjust the start time of the characteristic load so that only the characteristic load is started at the start time.

2. The high-bandwidth power line communication method based on carrier aggregation technology according to claim 1, characterized in that: The delay parameter includes the signal delay of each load completing several signal transmissions, and the signal delay is the time difference between the transmission time and the reception time of the data of the load.

3. The high-bandwidth power line communication method based on carrier aggregation technology according to claim 2, characterized in that: The process of determining the delay margin trend includes: If the comparison of the delay parameters meets the signal delay stability condition, determining that the delay margin trend of the frequency band subcarrier corresponding to the delay parameters is a stable trend; If the comparison of the delay parameters does not meet the signal delay stability condition, it is determined that the delay margin trend of the frequency band subcarrier corresponding to the delay parameters is an unstable trend.

4. The high-bandwidth power line communication method based on carrier aggregation technology according to claim 3, characterized in that: The signal delay stability condition is that the difference between the average value of the historical delay parameters and the average value of the recent delay parameters does not exceed a preset difference threshold.

5. The high-bandwidth power line communication method based on carrier aggregation technology according to claim 4, characterized in that: The process of determining the latency performance category of power line communications includes: If the comparison of the number of subcarriers in the non-stable trend frequency band meets the signal delay aggregation condition, determining that the delay performance category of the power line communication is a delay aggregation performance category; If the comparison of the number of subcarriers in the non-stable trend frequency band does not meet the signal delay aggregation condition, determining that the delay performance category of the power line communication is a delay non-aggregation performance category; The signal delay aggregation condition is that the proportion of the number of subcarriers in the frequency band with a non-stable trend to the total number of subcarriers in the frequency band for information transmission of each load does not exceed a preset proportion threshold.

6. The high-bandwidth power line communication method based on carrier aggregation technology according to claim 5, characterized in that: The process of selecting a transmission optimization method for data to be transmitted includes: If the delay performance category of the power line communication is the delay aggregation performance category, the transmission optimization method for selecting the data to be transmitted is to select the load for frequency band subcarrier adjustment based on the amount of data to be transmitted corresponding to each non-stable trend frequency band subcarrier, change the frequency band subcarrier corresponding to the load to a characteristic subcarrier, and aggregate several non-stable trend frequency band subcarriers into an optimized subcarrier; If the delay performance category of the power line communication is the delay non-aggregated performance category, the transmission optimization method for selecting the data to be transmitted is to determine the characteristic load corresponding to each non-stable trend frequency band subcarrier, and adjust the start-up time of the characteristic load so that the start-up time only completes the start-up of the characteristic load.

7. The high-bandwidth power line communication method based on carrier aggregation technology according to claim 6, characterized in that: When the delay performance category of the power line communication is the delay aggregation performance category, the process of selecting a load for frequency band subcarrier adjustment includes: Obtaining the amount of data to be transmitted for each load corresponding to each subcarrier in the non-stable trend frequency band; The load corresponding to the maximum value of the amount of data to be transmitted is determined as the load for adjusting the frequency band subcarriers.

8. The high-bandwidth power line communication method based on carrier aggregation technology according to claim 7, characterized in that: The process of determining the characteristic subcarrier includes: Obtain the delay parameters of the subcarriers in the stable trend frequency band; A frequency band subcarrier corresponding to a minimum value of a difference between an average value of a historical delay parameter and an average value of a recent delay parameter of the delay parameter is determined as a characteristic subcarrier.

9. The high-bandwidth power line communication method based on carrier aggregation technology according to claim 6, characterized in that: When the delay performance category of the power line communication is a delay non-aggregation performance category, determining a characteristic load of each non-steady trend frequency band subcarrier based on the amount of data to be transmitted of the load corresponding to each non-steady trend frequency band subcarrier; The load corresponding to the maximum amount of data to be transmitted is determined as the characteristic load of the subcarrier of the frequency band.

10. The high-bandwidth power line communication method based on carrier aggregation technology according to claim 9, characterized in that: The process of adjusting the start time of the characteristic load includes: Obtaining a delay parameter of a frequency band subcarrier corresponding to the characteristic load; adjusting the start time of the characteristic load based on the difference of the delay parameter; The difference of the delay parameters is the difference between the average value of the historical delay parameters and the average value of the recent delay parameters, and the delay time for delaying the start time is positively correlated with the difference.

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