CN115314180B

CN115314180B - Power line communication method, system, equipment and medium based on carrier aggregation

Info

Publication number: CN115314180B
Application number: CN202211231215.5A
Authority: CN
Inventors: 彭志荣; 陈钢; 冯志华; 邓瑞麒; 张欣; 曹威; 夏华进
Original assignee: Jiangmen Power Supply Bureau of Guangdong Power Grid Co Ltd
Current assignee: Jiangmen Power Supply Bureau of Guangdong Power Grid Co Ltd
Priority date: 2022-10-10
Filing date: 2022-10-10
Publication date: 2023-01-20
Anticipated expiration: 2042-10-10
Also published as: CN115314180A

Abstract

A method, system, device and medium for power line communication based on carrier aggregation determines a carrier communication channel and a plurality of corresponding initial subcarriers based on subscriber line data when the subscriber line data is received. And accessing the line topological structure corresponding to the user line data into a carrier communication channel, and judging whether the user line data is smaller than a preset structure threshold value. If yes, carrying out quantum coding on the initial sub-carrier and then carrying out carrier screening to obtain a target sub-carrier corresponding to the carrier communication channel. And if not, carrying out quantum coding after carrier screening is carried out on the initial sub-carriers to obtain target sub-carriers corresponding to the carrier communication channels. Based on the user line data and the corresponding line topology structure, the processing sequence of the initial subcarriers is correspondingly adjusted and the carrier aggregation is carried out, so that the flexibility is high, the frequency spectrum resources can be fully utilized, and the stability of the communication effect can be ensured during the multi-access communication.

Description

Power line communication method, system, equipment and medium based on carrier aggregation

Technical Field

The present invention relates to the field of power line communication technologies, and in particular, to a power line communication method, system, device, and medium based on carrier aggregation.

Background

With the application of new energy technology and distributed energy access technology becoming more and more extensive, the requirements on the communication rate of power line communication of power internet of things services such as real-time monitoring of power system equipment, charging and discharging of electric vehicles, automatic payment and the like are increasing day by day.

At present, the power line communication method mainly adopts an orthogonal frequency division multiplexing technology and a fixed frequency band for carrier aggregation, so that the anti-interference capability and the rate of the power line communication are improved. However, in practical power transmission line applications, both the access of the user and the channel environment affect the quality of the carrier communication.

Therefore, the conventional power line communication method uses carrier communication of a fixed frequency band and uses fixed subcarriers, and when multiple access communication is performed, stability of communication effect is poor due to low flexibility and low accuracy.

Disclosure of Invention

The invention provides a power line communication method, a power line communication system, a power line communication device and a power line communication medium based on carrier aggregation, which solve the technical problem that the stability of a communication effect is poor easily caused by low flexibility and low accuracy when multiple access communication is performed by using carrier communication of a fixed frequency band and fixed subcarriers in the conventional power line communication method.

The invention provides a power line communication method based on carrier aggregation, which comprises the following steps:

when user line data is received, determining a carrier communication channel and a plurality of corresponding initial subcarriers based on the user line data;

accessing a line topology structure corresponding to the user line data to the carrier communication channel, and judging whether the user line data is smaller than a preset structure threshold value;

if so, carrying out quantum coding on the initial sub-carrier and then carrying out carrier screening to obtain a target sub-carrier corresponding to the carrier communication channel;

if not, carrying out quantum coding after carrier screening on the initial subcarriers to obtain target subcarriers corresponding to the carrier communication channels;

and carrying out carrier aggregation on the target sub-carrier based on the user line data to obtain a target sub-band corresponding to the user line data.

Optionally, the step of determining, when subscriber line data is received, a carrier communication channel and a corresponding plurality of initial subcarriers based on the subscriber line data includes:

when receiving user line data, determining a carrier communication channel based on the user line data;

dividing the carrier communication channel into a plurality of subcarrier channels by adopting orthogonal frequency division multiplexing;

and respectively carrying out carrier modulation on the subcarrier channels by adopting a dynamic resource allocation mode to obtain corresponding initial subcarriers.

Optionally, the step of performing carrier screening after performing quantum coding on the initial subcarriers to obtain target subcarriers corresponding to the carrier communication channel includes:

initializing a population based on the initial subcarriers and respectively carrying out quantum state coding on population individuals to obtain corresponding initial population individuals;

respectively carrying out quantum state measurement on the initial population individuals and combining with a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals;

determining corresponding intermediate population individuals based on the individual evaluation results and preset individual standards;

acquiring channel environment change data corresponding to the carrier communication channel;

determining corresponding target population individuals and counting the evolution times in real time based on the channel environment change data and the change data corresponding to the intermediate population individuals;

judging whether the evolution times meet a preset maximum evolution threshold value or not;

if so, taking the initial sub-carrier corresponding to the target population individual corresponding to the maximum value of the individual evaluation result at the current moment as a plurality of target sub-carriers corresponding to the carrier communication channel;

and if not, taking the target population individuals at the current moment as the initial population individuals, and skipping to execute the step of respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

Optionally, the step of performing quantum coding after the initial subcarrier is subjected to carrier screening to obtain a target subcarrier corresponding to the carrier communication channel includes:

determining a corresponding intermediate subcarrier based on the channel environment change data and change data corresponding to the initial subcarrier;

initializing a population based on the intermediate subcarriers and respectively carrying out quantum state coding on population individuals to obtain corresponding initial population individuals;

determining corresponding target population individuals and counting the evolution times in real time based on the individual evaluation results and preset individual standards;

judging whether the evolution times meet a preset maximum evolution threshold or not;

if so, taking the intermediate sub-carrier corresponding to the target population individual corresponding to the maximum value of the individual evaluation result at the current moment as a plurality of target sub-carriers corresponding to the carrier communication channel;

Optionally, the step of obtaining the individual evaluation results corresponding to the initial population individuals by respectively performing quantum state measurement on the initial population individuals and combining with a preset evaluation function includes:

quantum state measurement is respectively carried out on the initial population individuals to obtain individual states corresponding to the initial population individuals;

taking the number of user subcarriers and the user rate corresponding to the individual state as the number of user subcarriers and the user rate corresponding to the initial population;

and substituting the number of the user subcarriers and the user rate into a preset evaluation function, and calculating to obtain an individual evaluation result corresponding to the initial population individual.

Optionally, the subscriber line data includes spectrum resource bandwidths required by a plurality of users; the step of performing carrier aggregation on the target sub-carrier based on the user line data to obtain a target sub-band corresponding to the user line data includes:

carrying out carrier aggregation on the target sub-carrier based on the frequency spectrum resource bandwidth to obtain a corresponding initial sub-band;

adopting a multiplication value of a subcarrier bandwidth corresponding to the initial subband and a preset decision variable to construct a target function corresponding to the initial subband;

and determining a target sub-band corresponding to the user line data according to the target function and preset aggregation data.

Optionally, the preset aggregated data includes function standard data and communication standard data; the step of determining the target sub-band corresponding to the user line data according to the target function and preset aggregation data includes:

judging whether the target function meets the function standard data or not;

if so, taking the initial sub-band corresponding to the target function as an intermediate sub-band;

if not, skipping to execute the step of carrying out carrier aggregation on the target sub-carrier based on the frequency spectrum resource bandwidth to obtain a corresponding initial sub-band;

judging whether the communication data corresponding to the intermediate sub-band meets the communication standard data;

if yes, the intermediate sub-band is used as a target sub-band corresponding to the user line data;

and if not, skipping to execute the step of determining a carrier communication channel and a plurality of corresponding initial subcarriers based on the user line data.

The invention also provides a power line communication system based on carrier aggregation, which comprises:

a carrier communication channel and initial subcarrier determining module, configured to determine, when subscriber line data is received, a carrier communication channel and a plurality of corresponding initial subcarriers based on the subscriber line data;

a subscriber line data judgment module, configured to access a line topology structure corresponding to the subscriber line data to the carrier communication channel, and judge whether the subscriber line data is smaller than a preset structure threshold;

a target subcarrier obtaining first module, configured to perform carrier screening after performing quantum coding on the initial subcarrier if the target subcarrier is a target subcarrier corresponding to the carrier communication channel;

a second module for obtaining a target subcarrier, configured to perform carrier screening on the initial subcarrier and then perform quantum coding to obtain a target subcarrier corresponding to the carrier communication channel if the initial subcarrier is not the target subcarrier;

and the target sub-band obtaining module is used for carrying out carrier aggregation on the target sub-carrier based on the user line data to obtain a target sub-band corresponding to the user line data.

The invention further provides an electronic device, which includes a memory and a processor, wherein the memory stores a computer program, and when the computer program is executed by the processor, the processor executes the steps of implementing any one of the above power line communication methods based on carrier aggregation.

The present invention also provides a computer-readable storage medium having stored thereon a computer program which, when executed, implements any one of the carrier aggregation-based power line communication methods described above.

According to the technical scheme, the invention has the following advantages:

the invention determines a carrier communication channel and a corresponding plurality of initial sub-carriers based on subscriber line data when the subscriber line data is received. And accessing the line topological structure corresponding to the user line data into a carrier communication channel, and judging whether the user line data is smaller than a preset structure threshold value. And if so, carrying out quantum coding on the initial sub-carrier and then carrying out carrier screening to obtain a target sub-carrier corresponding to the carrier communication channel. And if not, carrying out quantum coding after carrier screening is carried out on the initial sub-carriers to obtain target sub-carriers corresponding to the carrier communication channels. And carrying out carrier aggregation on the target sub-carrier based on the user line data to obtain a target sub-band corresponding to the user line data. The problem that the existing power line communication method uses carrier communication of a fixed frequency band and fixed subcarriers, and the stability of a communication effect is poor easily caused by low flexibility and low accuracy in multiple access communication is solved. Based on the user line data and the corresponding line topology structure, the processing sequence of the initial subcarriers is correspondingly adjusted and the carrier aggregation is carried out, so that the flexibility is high, the frequency spectrum resources can be fully utilized, and the stability of the communication effect can be ensured during the multi-access communication.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.

Fig. 1 is a flowchart illustrating steps of a power line communication method based on carrier aggregation according to an embodiment of the present invention;

fig. 2 is a flowchart illustrating steps of a power line communication method based on carrier aggregation according to a second embodiment of the present invention;

fig. 3 is a block diagram of a structure of a power line communication system based on carrier aggregation according to a third embodiment of the present invention.

Detailed Description

The embodiment of the invention provides a power line communication method, a system, equipment and a medium based on carrier aggregation, which are used for solving the technical problem that the stability of a communication effect is poor easily caused by low flexibility and low accuracy when multiple access communication is carried out by using carrier communication of a fixed frequency band and using fixed subcarriers in the conventional power line communication method.

In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1, fig. 1 is a flowchart illustrating steps of a power line communication method based on carrier aggregation according to an embodiment of the present invention.

step 101, when receiving subscriber line data, determining a carrier communication channel and a plurality of corresponding initial subcarriers based on the subscriber line data.

The subscriber line data is data information including a spectrum resource bandwidth required by a plurality of users, the number of subscriber lines, and a line topology corresponding to each user. The carrier communication channel is a channel having a bandwidth that satisfies a spectrum resource bandwidth required by each user in the subscriber line data.

The initial subcarrier is a subcarrier channel obtained by dividing and modulating a carrier communication channel by adopting an orthogonal frequency division multiplexing technology.

In the carrier communication channel, a plurality of subcarriers are respectively integrated together to form a corresponding subband channel, and when the allocation is carried out, the subcarriers in the same subband are adjusted and allocated to the same user according to the same modulation mode, namely the subcarriers are allocated as a unit.

Since the sub-band channel is determined by the sub-carrier with the worst quality, in order to ensure the error rate of information transmission, the system performance is degraded when the sub-band is too large, and when it is too largeLWhen the sub-carriers are aggregated into a sub-band, the resource allocation quantity is reduced toN/L. For quantum genetic algorithm, the most complex process is the ranking of target evaluation, and the complexity of adopting rapid ranking is

After sub-band channel division, complexity is reduced to

. In addition, the subband division also compresses the search space of the algorithm, and before the subband division, the search space is

After the sub-bands are divided, the search space is reduced to

. The reduction of the search space correspondingly reduces the number of iterations and the population number required by the algorithm. The sub-band division greatly reduces the complexity of the algorithm.

In the embodiment of the present invention, when subscriber line data is received, a carrier communication channel is determined based on the subscriber line data. The method comprises the steps of dividing sub-band channels corresponding to carrier communication channels into a plurality of sub-carrier channels by adopting orthogonal frequency division multiplexing, respectively carrying out carrier modulation on the sub-carrier channels by adopting a dynamic resource allocation mode, selecting an allocation frequency and a modulation mode for selecting the sub-carriers based on the quality of the channels, grading the channel quality, adopting high modulation when the quality is good, adopting low modulation when the quality is poor, not using channels with poor quality, and taking the sub-carriers obtained by modulation as initial sub-carriers.

Step 102, a line topology structure corresponding to the user line data is accessed to a carrier communication channel, and whether the user line data is smaller than a preset structure threshold value is judged.

The line topology structure refers to the connection condition between the line and the device corresponding to each user in the user line data. The preset configuration threshold is a critical value set for the number of devices and subscriber lines included in the subscriber line data.

In the embodiment of the invention, because the power line channel has faults and local lines are accessed or connected out due to sudden change, the occurrence probability of the faults is low, and therefore, the influence on the communication channel after the line topological structure is accessed into the carrier communication channel is judged by accessing the line topological structure corresponding to the user line data into the carrier communication channel. Because the carrier communication channel has the borrowing condition, when the receiving route or equipment is less and the influence on the whole environment of the channel is not great, the initial sub-carrier can be subjected to quantum coding and then carrier screening, namely the influenced channel is locally adjusted. When the topology of the outgoing route is complex or the amount of the equipment is large, quantum coding needs to be performed after carrier screening is performed on the initial subcarriers.

And 103, if so, carrying out carrier screening after carrying out quantum coding on the initial subcarriers to obtain target subcarriers corresponding to the carrier communication channels.

The target subcarrier is a subcarrier obtained by performing quantum coding and carrier screening on the initial subcarrier.

In the embodiment of the invention, when the user line data and the equipment corresponding to the user line data are smaller than the preset structural threshold, firstly, the population is initialized based on the initial subcarrier and the population individuals are respectively subjected to quantum state coding to obtain the corresponding initial population individuals. Then, quantum state measurement is carried out on the initial population individuals respectively, a preset evaluation function is combined, individual evaluation results corresponding to the initial population individuals are obtained, and corresponding intermediate population individuals are determined based on the individual evaluation results and preset individual standards. And then, acquiring channel environment change data corresponding to the carrier communication channel, determining corresponding target population individuals based on the channel environment change data and change data corresponding to the intermediate population individuals, and counting the evolution times in real time. And finally, judging whether the evolution times meet a preset maximum evolution threshold, and if so, taking the initial sub-carriers corresponding to the target population individuals corresponding to the maximum value of the current-time individual evaluation result as a plurality of target sub-carriers corresponding to the carrier communication channel. If not, taking the target population individuals at the current moment as initial population individuals, and skipping to execute the steps of respectively carrying out quantum state measurement on the initial population individuals and combining with a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

And step 104, if not, carrying out quantum coding after carrier screening is carried out on the initial subcarriers to obtain target subcarriers corresponding to the carrier communication channels.

In the embodiment of the invention, when the user line data and the equipment corresponding to the user line data are greater than the preset structural threshold, firstly, the channel environment change data corresponding to the carrier communication channel are collected, and the corresponding intermediate subcarrier is determined based on the channel environment change data and the change data corresponding to the initial subcarrier. Then, initializing the population based on the intermediate subcarriers and respectively carrying out quantum state coding on the population individuals to obtain corresponding initial population individuals, and respectively carrying out quantum state measurement on the initial population individuals and combining with a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals. And then, determining corresponding target population individuals and counting the evolution times in real time based on the individual evaluation results and preset individual standards. And finally, judging whether the evolution times meet a preset maximum evolution threshold, if so, taking the intermediate subcarriers corresponding to the target population individuals corresponding to the maximum value of the individual evaluation result at the current moment as a plurality of target subcarriers corresponding to the carrier communication channel. And if not, taking the target population individuals at the current moment as initial population individuals, and skipping to perform the steps of respectively performing quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

And 105, carrying out carrier aggregation on the target sub-carrier based on the user line data to obtain a target sub-band corresponding to the user line data.

The target sub-band refers to the sub-band which meets communication standard data and is obtained after carrier aggregation is carried out by adopting the target sub-carrier

In the embodiment of the invention, the carrier aggregation is carried out on the target sub-carrier based on the frequency spectrum resource bandwidth to obtain the corresponding initial sub-band. And constructing a target function corresponding to the initial sub-band by adopting a multiplication value of the sub-carrier bandwidth corresponding to the initial sub-band and a preset decision variable, and determining the target sub-band corresponding to the user line data based on the target function and preset aggregation data.

In the embodiment of the invention, the carrier communication channel and the corresponding plurality of initial subcarriers are determined based on the subscriber line data when the subscriber line data is received. And accessing the line topological structure corresponding to the user line data into a carrier communication channel, and judging whether the user line data is smaller than a preset structure threshold value. If yes, carrying out quantum coding on the initial sub-carrier and then carrying out carrier screening to obtain a target sub-carrier corresponding to the carrier communication channel. And if not, carrying out quantum coding after carrier screening is carried out on the initial sub-carriers to obtain target sub-carriers corresponding to the carrier communication channels. And carrying out carrier aggregation on the target sub-carrier based on the user line data to obtain a target sub-band corresponding to the user line data. The technical problem that the stability of a communication effect is poor due to low flexibility and low accuracy when multiple access communication is performed by using carrier communication of a fixed frequency band and fixed subcarriers in the conventional power line communication method is solved. Based on the user line data and the corresponding line topology structure, the processing sequence of the sub-carriers is correspondingly adjusted and the carrier aggregation is carried out, so that the flexibility is high, the frequency spectrum resources can be fully utilized, and the stability of the communication effect can be ensured during the multi-access communication.

Referring to fig. 2, fig. 2 is a flowchart illustrating steps of a power line communication method based on carrier aggregation according to a second embodiment of the present invention.

Step 201, when receiving subscriber line data, determining a carrier communication channel and a plurality of corresponding initial subcarriers based on the subscriber line data.

Further, step 201 may comprise the following sub-steps S11-S13:

and S11, when the user line data is received, determining a carrier communication channel based on the user line data.

In the embodiment of the invention, when the user line data is received, the frequency spectrum resource bandwidth required by each user in the user line data is acquired, and the carrier communication channel which meets the frequency spectrum resource bandwidth required by each user in the user line data is selected by combining the bandwidth conditions of the existing multiple carrier communication channels.

And S12, dividing a carrier communication channel into a plurality of subcarrier channels by adopting orthogonal frequency division multiplexing.

In the embodiment of the invention, the carrier communication channels are divided by the OFDM technology, so that a plurality of subcarrier channels are obtained.

And S13, respectively carrying out carrier modulation on the subcarrier channels by adopting a dynamic resource allocation mode to obtain corresponding initial subcarriers.

In the embodiment of the invention, a dynamic resource allocation mode, namely a modulation mode for selecting allocation frequency and selecting subcarriers based on the quality of a subcarrier channel, is adopted to grade the quality of the subcarrier channel, high modulation is adopted for the subcarrier channel with good quality, low modulation is adopted for the subcarrier channel with poor quality, and the subcarrier channel with poor quality is not used. And respectively taking all the subcarrier channels obtained by modulation as initial subcarriers.

Step 202, a line topology structure corresponding to the user line data is accessed to a carrier communication channel, and whether the user line data is smaller than a preset structure threshold value is judged.

In the embodiment of the invention, a plurality of line topological structures corresponding to the user line data are respectively accessed into the carrier communication channel, and whether the number of the accessed user lines and the equipment are smaller than the preset structure threshold value is judged.

And 203, if so, performing carrier screening after performing quantum coding on the initial subcarriers to obtain target subcarriers corresponding to the carrier communication channels.

Further, step 203 may comprise the following sub-steps S21-S28:

and S21, initializing the population based on the initial subcarrier and respectively carrying out quantum state coding on the population individuals to obtain the corresponding initial population individuals.

The initial population individuals refer to population individuals in an individual population constructed on the basis of subcarriers by adopting a quantum genetic algorithm.

Assuming a system with N initial subcarriers and K usersEach initial population individual comprises N chromosomes, corresponding to N intermediate subcarriers to be distributed. Wherein one chromosome contains

A gene, which is used to indicate to which user the subcarrier is. Each chromosome contains two different quantum states, the probabilities of being in these two quantum states are denoted by α and β, respectively, and thus the initial population of individuals can be expressed as:

wherein,

is shown astGeneration by generationjThe number of individuals in the initial population is,

is shown astGeneration by generationNSEach gene is in [0 ]]The probability of a quantum state is,

first, thetGeneration by generationNSEach gene is in [ 1]]Probability of quantum state.

In the embodiment of the invention, an individual population is constructed based on the initial subcarrier by adopting a quantum genetic algorithm, and quantum state coding is respectively carried out on population individuals in the population, so that corresponding initial population individuals are obtained.

And S22, respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

The preset evaluation function is:

wherein,

representing the total sending rate corresponding to the initial population of individuals,

indicating the number of subcarriers allocated equally by the user,

representing the user rate. The right of the formula for the merit function represents the system service fairness index SFI. The SFI varies in the range of [0,1]The proportional fairness is incremented from 0 to 1. Since a smaller evaluation function generally indicates a more suitable evaluation function, a minus sign is added.

The individual evaluation result refers to evaluation data obtained by substituting the number of user subcarriers corresponding to the initial population and the user rate into a preset evaluation function.

In the embodiment of the invention, quantum state measurement is carried out on the initial population individuals, a random variable is generated between [0,1], and the random variable is adopted to measure the quantum superposition state of the initial population individuals respectively, so that the quantum superposition state collapses from one state to another specific state. And after determining the individual state corresponding to the initial population individual, taking the number of the user subcarriers corresponding to the individual state and the user rate as the number of the user subcarriers corresponding to the initial population individual and the user rate. And substituting the number of user subcarriers and the user rate corresponding to each initial population into a preset evaluation function respectively, thereby obtaining individual evaluation results corresponding to the initial population.

And S23, determining corresponding intermediate population individuals based on the individual evaluation results and preset individual standards.

The preset individual standard refers to a critical value which needs to be met by an individual evaluation result corresponding to the population individual and is set in advance based on communication needs. The intermediate population individuals are initial population individuals which are screened out to meet preset individual standards through quantum state measurement and individual evaluation.

In the embodiment of the invention, after the individual evaluation results corresponding to each initial population individual are obtained, the individual evaluation results are respectively compared with the preset individual standard, and the initial population individual corresponding to the individual evaluation result meeting the preset individual standard is taken as the intermediate population individual.

And S24, collecting channel environment change data corresponding to the carrier communication channel.

The channel environment change data refers to data that the channel environment of the carrier communication channel changes after the carrier communication channel is accessed to a line topology structure corresponding to the user line data.

In the embodiment of the invention, before the circuit topological structure is not accessed, the artificial noise interference of the carrier communication channel is stable, the corresponding channel environment is kept balanced, the channel environment of the carrier communication channel is correspondingly changed along with the access of the circuit topological structure, and finally a new balanced environment is achieved.

And S25, determining corresponding target population individuals and counting the evolution times in real time based on the channel environment change data and the change data corresponding to the intermediate population individuals.

The target population individuals refer to the population individuals left after the initial population individuals are subjected to quantum genetic algorithm and carrier wave screening. The number of evolutionary events refers to the number of times that all target population individuals are obtained.

In the embodiment of the invention, a self-learning module is adopted to learn and count resource allocation, and a channel change rule corresponding to channel environment change data and change data corresponding to intermediate population individuals are mastered, so that the intermediate population individuals of the change data after channel mutation, which accord with the channel change rule, are screened, the intermediate population individuals which accord with the channel change rule are taken as target population individuals, and the evolution times are counted in real time.

And S26, judging whether the evolution times meet a preset maximum evolution threshold value.

The preset maximum evolution threshold refers to that the maximum iteration times which need to be met by the evolution times are preset based on communication needs or the optimal individual fitness value of ten continuous generations is unchanged.

In the embodiment of the invention, each time all target population individuals corresponding to the individual population are obtained, the evolution times are counted in real time, namely, the evolution times are accumulated once, and after the evolution times are counted, the evolution times are compared with the preset maximum evolution threshold value.

And S27, if so, taking the initial sub-carrier corresponding to the target population individual corresponding to the maximum value of the individual evaluation result at the current time as a plurality of target sub-carriers corresponding to the carrier communication channel.

In the embodiment of the invention, when the evolution times are equal to the maximum evolution threshold, the target population individual corresponding to the maximum value of the evaluation result of the individual at the current moment is selected, and all initial subcarriers corresponding to the target population individual are used as a plurality of target subcarriers corresponding to the carrier communication channel.

And S28, if not, taking the target population individuals at the current moment as initial population individuals, and skipping to execute the steps of respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

In the embodiment of the invention, when the evolution frequency is less than the maximum evolution threshold, all target population individuals at the current moment are taken as initial population individuals, the steps of measuring the quantum state of the initial population individuals respectively and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals are skipped to perform, the individual states corresponding to the target population individuals are calculated and evaluated, the target population individuals are re-determined until the evolution frequency is equal to the maximum evolution threshold, and a plurality of initial subcarriers corresponding to the target population individuals corresponding to the maximum value of the individual evaluation results in the target population individuals at the current moment are taken as a plurality of target subcarriers corresponding to a given channel, so that a plurality of target subcarriers corresponding to the given channel are obtained.

And step 204, if not, carrying out quantum coding after carrier screening is carried out on the initial sub-carriers to obtain target sub-carriers corresponding to the carrier communication channels.

Further, step 204 may comprise the following sub-steps S31-S38:

and S31, collecting channel environment change data corresponding to the carrier communication channel.

And S32, determining corresponding intermediate subcarriers based on the channel environment change data and the change data corresponding to the initial subcarriers.

The intermediate sub-carrier is an initial sub-carrier which is screened out based on the change data corresponding to the initial sub-carrier and the change data meets the channel change rule corresponding to the channel environment change data.

In the embodiment of the invention, a self-learning module is adopted to learn and count resource allocation, and a channel change rule corresponding to channel environment change data and change data corresponding to initial subcarriers are mastered, so that the initial subcarriers which accord with the channel change rule after channel mutation are screened, and the initial subcarriers which accord with the channel change rule are used as intermediate subcarriers.

And S33, initializing the population based on the intermediate subcarriers and respectively carrying out quantum state coding on the population individuals to obtain corresponding initial population individuals.

In the embodiment of the invention, an individual population is constructed based on intermediate carriers by adopting a quantum genetic algorithm, and quantum state coding is carried out on population individuals in the population, so that corresponding initial population individuals are obtained.

And S34, respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

In the embodiment of the invention, quantum state measurement is carried out on the initial population individuals, a random variable is generated between [0 and 1], and the random variable is adopted to measure the quantum superposition state of the initial population individuals respectively, so that the quantum superposition state is collapsed from one state to another specific state. And after determining the individual state corresponding to the initial population individual, taking the number of the user subcarriers corresponding to the individual state and the user rate as the number of the user subcarriers corresponding to the initial population individual and the user rate. And respectively substituting the user subcarrier number and the user rate corresponding to each initial population into the preset evaluation function to obtain an individual evaluation result corresponding to the initial population.

And S35, determining corresponding target population individuals and counting the evolution times in real time based on the individual evaluation results and preset individual standards.

In the embodiment of the invention, after the individual evaluation results corresponding to the initial population individuals are obtained, the individual evaluation results are compared with the preset individual standard, the initial population individuals corresponding to the individual evaluation results meeting the preset individual standard are taken as target population individuals, and the evolution times are counted in real time.

And S36, judging whether the evolution times meet a preset maximum evolution threshold value.

And S37, if yes, taking the intermediate sub-carrier corresponding to the target population individual corresponding to the maximum value of the individual evaluation result at the current moment as a plurality of target sub-carriers corresponding to the carrier communication channel.

In the embodiment of the invention, when the evolution times are equal to the maximum evolution threshold, the target population individual corresponding to the maximum value of the evaluation result of the individual at the current moment is selected, and all the intermediate subcarriers corresponding to the target population individual are used as a plurality of target subcarriers corresponding to the carrier communication channel.

And S38, if not, taking the target population individuals at the current moment as initial population individuals, and skipping to execute the steps of respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

In the embodiment of the invention, when the evolution frequency is less than the maximum evolution threshold, all target population individuals at the current moment are taken as initial population individuals, the steps of respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals are skipped to be executed, the individual states corresponding to the target population individuals are calculated and evaluated, the target population individuals are re-determined until the evolution frequency is equal to the maximum evolution threshold, and a plurality of intermediate subcarriers corresponding to the target population individuals corresponding to the maximum individual evaluation result in the target population individuals at the current moment are taken as a plurality of target subcarriers corresponding to a given channel, so that a plurality of target subcarriers corresponding to the given channel are obtained.

Further, sub-step S22 and sub-step S34 further include the following steps S221 to S223:

and S221, quantum state measurement is respectively carried out on the initial population individuals to obtain individual states corresponding to the initial population individuals.

The individual states refer to two corresponding quantum states from the population individuals, and the individual states comprise a first individual state and a second individual state, wherein the first individual state refers to the quantum state corresponding to the quantum state measuring result of 1. The second state refers to a quantum state corresponding to a quantum state measurement of 0.

In the embodiment of the invention, a random variable is generated in a preset random number interval, namely a random variable is generated between [0 and 1], and the random variable is adopted to measure the quantum superposition state of the initial population individuals respectively, so that the quantum superposition state collapses from one state to another specific state. And comparing the random variable with the square of the probability amplitude corresponding to the initial population individuals, if the random variable is greater than the square of the probability amplitude corresponding to the initial population individuals, setting the individual state corresponding to the initial population individuals as a first individual state, namely setting the quantum state measurement result as 1, and setting the individual state corresponding to the initial population individuals as the first individual state. If the random variable is less than or equal to the square of the probability amplitude corresponding to the initial population individuals, setting the individual state corresponding to the initial population individuals as a second individual state, namely, the quantum state measurement result is 0, and setting the individual state corresponding to the initial population individuals as the second individual state.

S222, taking the number of the user sub-carriers and the user rate corresponding to the individual state as the number of the user sub-carriers and the user rate corresponding to the initial population.

The individual state refers to the individual state containing the number of user subcarriers and the change situation of the user rate, and the number of the user subcarriers refers to the number of the subcarriers averagely allocated by the user. The user rate is an average value of a sum of a minimum rate and a maximum rate corresponding to a user using a subcarrier. For example: and 3 users, wherein if a given channel is averagely allocated to each user, the average value of the given channel is calculated as the number of user subcarriers, and the average value of the sum of the minimum rate and the maximum rate of each user of the 3 users is recorded as the user rate.

In the embodiment of the invention, after the individual state corresponding to the initial population individual is determined, the number of the user subcarriers corresponding to the individual state and the user rate are used as the number of the user subcarriers corresponding to the initial population individual and the user rate.

And S223, substituting the number of the user subcarriers and the user rate into a preset evaluation function, and calculating to obtain an individual evaluation result corresponding to the initial population.

In the embodiment of the invention, after the individual state corresponding to the initial population individual is determined, the number of the user subcarriers corresponding to the individual state and the user rate are used as the number of the user subcarriers corresponding to the initial population individual and the user rate. And substituting the number of user subcarriers and the user rate corresponding to each initial population into a preset evaluation function respectively, thereby obtaining individual evaluation results corresponding to the initial population.

Step 205, performing carrier aggregation on the target sub-carrier based on the spectrum resource bandwidth to obtain a corresponding initial sub-band.

In the embodiment of the invention, the initial sub-band division can be performed with equal bandwidth division, and the number of sub-carriers of each sub-band is the same when the bandwidth division is performed. And equal non-uniform bandwidth division can also be performed, and the non-uniform bandwidth division determines and divides the number of target sub-carriers in each sub-band by adopting a preset sub-band model based on the real-time state of the channel. The spectrum resource bandwidth required by a plurality of users contained in the user demand data is based on the spectrum resource bandwidth, and a spectrum aggregation algorithm is adopted through a preset sub-band model to respectively select and aggregate the target sub-carriers meeting the requirements into corresponding initial sub-bands.

And continuously adjusting the combined target subcarrier to reach the maximum communication rate by adopting a preset subband model, wherein the preset subband model is as follows:

wherein,arepresenting decision variables, objective functionsf(a)Which may be a maximum or a minimum, the decision variables are constrained by a function g (a), and D represents the set of decision variables.

For example: the method for aggregating the target subcarriers by adopting the spectrum aggregation algorithm in the subband model comprises the following steps:

a1, sequencing frequency spectrum resource bandwidths required by user services of N users from small to large, and constructing a bandwidth set

Wherein

For the userkThe bandwidth of the spectrum resources required by the service,

and B is a spectrum resource bandwidth set required by user services of N users.

A2、

Constructing an obtained idle frequency band set for sequencing the target sub-carriers from low frequency to high frequency, wherein

Represents the firstiA number of free frequency bands, which are,

for idle frequency bandiThe boundary of the low frequency of (c),

for idle frequency bandiOf a high frequency boundary, wherein

，

The total number of idle frequency bands which can be provided for users in a single spectrum span is represented; if the right boundary of the spectrum span falls within

Jumping to A3; if frequency spectrumSpan right boundary falls on

In, jump to A5.

A3, when the right boundary of the spectrum span falls into the idle frequency band

When it is used, its size is set to

Is removed from the spectrum span, thus leaving the spectrum spanvAn idle frequency band for spectrum aggregation within the spectrum span;

it can be used by the next spectrum span to jump to A4. It should be noted here that the idle band

Can use the bandwidth of

To indicate that the user is not in a normal position,i=1,2,…,V+1。

a4, in span, willVBefore the idle frequency bands are sequentially calculatedrSum of +1 idle band bandwidth aggregations

Thereby obtaining a set

，r=1,2,3,…

Jump to A6.

A5 in span, will

A free frequencyBefore the segments are sequentially calculatedrSum of +1 idle band bandwidth aggregations

Thereby obtaining a set

，r=1,2,3,…

Jump to A6.

A6, respectively connecting each element in M with M from left to right according to the size of the aggregation bandwidth

And (5) comparing one by one. When all the elements in M are compared, in

If there is an equation

Jumping to A7; in that

If there is no equation

Then jump to A8.

A7, if existing, satisfies equation

Aggregate bandwidth of

And simultaneously, users corresponding to the matching can be foundkThen will be

Corresponding idle frequency band allocation

To just meet its business needs, in setsB，M，FInner handle used

，

，

And removing to obtain an updated set, and jumping to A9.

A8, in the spectrum span, the first one of M is larger than

Aggregated band bandwidth of

Is assigned to the firstkIndividual cognitive users, i.e. with aggregated bands

Cognitive users with the most similar bandwidthkTo minimize wasted idle spectrum resources, wherein

，k=1,2,…,N. Within the set B, M, F, will be used

，

，

And removing to obtain an updated set, and jumping to A9.

A9, if in the updated BIs provided with

There are still M after update

While satisfying the conditions

If yes, the algorithm is executed again, and the step is switched to A2; if any of the above conditions is not met, the algorithm ends.

And step 206, constructing a target function corresponding to the initial subband by using a multiplication value of the subcarrier bandwidth corresponding to the initial subband and a preset decision variable.

The target function expression is:

wherein,athe decision variables are represented by a representation of,

the representation of the objective function is shown as,Bwhich represents the bandwidth of the initial sub-band,Nindicating the number of subcarriers contained in the original subband.

The preset decision variables refer to decision variables randomly selected from a preset decision variable set.

In the embodiment of the invention, the target function corresponding to the initial subband is constructed by multiplying the residual value of the bandwidth of the initial subband and the corresponding subcarrier number by the preset multiplication value of the decision variable.

And step 207, determining a target sub-band corresponding to the user line data according to the target function and the preset aggregation data.

Further, the preset aggregated data includes function standard data and communication standard data, and step 207 may include the following sub-steps S41 to S46:

and S41, judging whether the target function meets the function standard data.

The function standard data means that the objective function satisfies

Or

。

In the embodiment of the present invention, when (A) is usedD，F，f) When expressing the optimal combination strategy, the domain can be usedDIndicate if, if

To describe all feasible solutions, thenFEach element in the set is a solution of the optimal combination problem, and if the target function meets the preset function condition, the corresponding feasible solution is obtained at the moment

Referred to as the optimal solution to the problem. That is, the combination when the rate is the fastest is regarded as the optimum combination based on the communication rate detection result.

And S42, if so, taking the initial sub-band corresponding to the target function as an intermediate sub-band.

In the embodiment of the present invention, if the objective function meets the preset function standard data, the initial subband corresponding to the objective function meeting the function standard data is taken as the intermediate subband corresponding to the user.

S43, if not, skipping to execute the step of carrying out carrier aggregation on the target sub-carrier based on the frequency spectrum resource bandwidth to obtain the corresponding initial sub-band.

In the embodiment of the invention, if the target function does not meet the preset function standard data, skipping and executing the step of carrying out carrier aggregation on the target sub-carriers based on the frequency spectrum resource bandwidth to obtain the corresponding initial sub-bands, namely, carrying out carrier aggregation on the target sub-carriers corresponding to a plurality of target population individuals corresponding to the current moment again based on the frequency spectrum resource bandwidth by adopting a frequency spectrum aggregation algorithm through a sub-band model, and constructing the corresponding target function, and repeating the step until the constructed target function meets the preset function standard data.

And S44, judging whether the communication data corresponding to the middle sub-band meets the communication standard data.

The communication data is data such as packet loss rate, delay rate, verification information transmission integrity and the like to be transmitted only by the intermediate slave in the communication process. The communication standard data is a critical value corresponding to each type of data included in communication data based on communication needs. For example: detecting the rising edge and the falling edge of the electric pulse signal corresponding to the middle sub-band, and counting the pulse width; and comparing the pulse width count with the previous pulse width count to obtain a pulse width count historical minimum value, further calculating the optical communication code rate, namely the communication rate corresponding to the target sub-band according to the pulse width count historical minimum value, and comparing the communication rate with a preset communication rate standard.

In the embodiment of the invention, the communication data corresponding to the intermediate sub-band is respectively compared with the corresponding communication standard data.

And S45, if so, taking the middle sub-band as a target sub-band corresponding to the user line data.

In the embodiment of the invention, if the communication data corresponding to the intermediate sub-band meets the communication standard data, the intermediate sub-band is taken as the target sub-band, and the sub-carriers in the same sub-band are adjusted and distributed to the same user according to the same modulation mode. The time division multiple access technology is adopted to distinguish users with different addresses, multiple access connection is completed on the basis, and after user connection is completed, full-band carrier communication is performed by combining broadband PLC, narrow-band PLC, cross-band PLC and power line power frequency communication.

And S46, if not, skipping to execute the step of determining the carrier communication channel and the corresponding plurality of initial subcarriers based on the user line data.

In the embodiment of the invention, if the communication data corresponding to the intermediate sub-band does not meet the communication standard data, skipping executes the step of determining the carrier communication channel and the corresponding multiple initial sub-carriers based on the user line data, and re-performs carrier screening and aggregation on the initial sub-carriers until the communication rate corresponding to the target sub-band meets the preset communication standard.

In the embodiment of the invention, the carrier communication channel and the corresponding plurality of initial subcarriers are determined based on the subscriber line data when the subscriber line data is received. And accessing a line topological structure corresponding to the user line data into a carrier communication channel, judging whether the user line data is smaller than a preset structure threshold value, and if so, carrying out quantum coding on the initial sub-carrier and then carrying out carrier screening to obtain a target sub-carrier corresponding to the carrier communication channel. And if not, carrying out quantum coding after carrier screening is carried out on the initial sub-carriers to obtain target sub-carriers corresponding to the carrier communication channels. And performing carrier aggregation on the target sub-carrier based on the frequency spectrum resource bandwidth to obtain a corresponding initial sub-band, constructing a target function corresponding to the initial sub-band by adopting a multiplication value of the sub-carrier bandwidth corresponding to the initial sub-band and a preset decision variable, and determining the target sub-band corresponding to the user line data based on the target function and preset aggregation data. By fully utilizing the frequency band resource of the carrier communication channel, the accuracy and the flexibility of multiple access communication are improved. The quantum genetic algorithm is adopted to replace the traditional genetic algorithm, the population quantity and the iteration times of the quantum genetic algorithm are less than those of the traditional genetic algorithm, the probability of trapping in the local optimal solution is low, the algorithm operation speed is improved, and the error of the algorithm result in application is reduced.

Referring to fig. 3, fig. 3 is a block diagram of a power line communication system based on carrier aggregation according to a third embodiment of the present invention.

An embodiment of the present invention provides a power line communication system based on carrier aggregation, including:

a carrier communication channel and initial subcarrier determining module 301, configured to determine a carrier communication channel and a corresponding plurality of initial subcarriers based on the subscriber line data when the subscriber line data is received.

The subscriber line data determining module 302 is configured to access a line topology structure corresponding to the subscriber line data to a carrier communication channel, and determine whether the subscriber line data is smaller than a preset structure threshold.

A target subcarrier obtaining first module 303, configured to perform carrier screening after performing quantum coding on the initial subcarrier if the target subcarrier is obtained, so as to obtain a target subcarrier corresponding to the carrier communication channel.

A target sub-carrier obtaining second module 304, configured to, if not, perform quantum coding after performing carrier screening on the initial sub-carriers to obtain target sub-carriers corresponding to the carrier communication channel.

A target subband obtaining module 305, configured to perform carrier aggregation on the target subcarriers based on the user line data, so as to obtain a target subband corresponding to the user line data.

Optionally, the carrier communication channel and initial subcarrier determining module 301 includes:

and the carrier communication channel determining module is used for determining the carrier communication channel based on the subscriber line data when the subscriber line data is received.

And the subcarrier channel obtaining module is used for dividing the carrier communication channel into a plurality of subcarrier channels by adopting orthogonal frequency division multiplexing.

And the initial subcarrier obtaining module is used for respectively carrying out carrier modulation on the subcarrier channels by adopting a dynamic resource allocation mode to obtain corresponding initial subcarriers.

Optionally, the target subcarrier obtaining first module 303 includes:

the initial population obtaining module is used for initializing the population based on the initial subcarriers and respectively carrying out quantum state coding on the population individuals to obtain corresponding initial population individuals.

And the individual evaluation result obtaining first module is used for respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

And the intermediate population individual determining module is used for determining corresponding intermediate population individuals based on the individual evaluation result and a preset individual standard.

The first module for collecting the environment change data is used for collecting the channel environment change data corresponding to the carrier communication channel.

And the target population individual determination first module is used for determining corresponding target population individuals and counting the evolution times in real time based on the channel environment change data and the change data corresponding to the intermediate population individuals.

The first module for judging the evolution times is used for judging whether the evolution times meets a preset maximum evolution threshold value.

And the evolution times meet a threshold value first sub-module, and if so, the initial sub-carriers corresponding to the target population individuals corresponding to the maximum value of the individual evaluation result at the current moment are used as a plurality of target sub-carriers corresponding to the carrier communication channel.

And the first submodule is used for taking the target population individuals at the current moment as initial population individuals if the evolution times do not meet the threshold value, and skipping to execute the steps of respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

Optionally, the second module 304 for obtaining target subcarriers includes:

and the environment change data acquisition second module is used for acquiring channel environment change data corresponding to the carrier communication channel.

And the intermediate subcarrier determining module is used for determining corresponding intermediate subcarriers based on the channel environment change data and the change data corresponding to the initial subcarriers.

And the initial population obtaining second module is used for initializing the population based on the intermediate subcarriers and respectively carrying out quantum state coding on the population individuals to obtain corresponding initial population individuals.

And the individual evaluation result obtaining second module is used for respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

And the target population individual and statistical evolution frequency determining module is used for determining corresponding target population individuals and counting the evolution frequency in real time based on the individual evaluation result and the preset individual standard.

And the second module for judging the evolution times is used for judging whether the evolution times meet a preset maximum evolution threshold value.

And the second submodule is used for taking the intermediate sub-carrier corresponding to the target population individual corresponding to the maximum value of the individual evaluation result at the current moment as a plurality of target sub-carriers corresponding to the carrier communication channel if the evolution times meet the threshold.

And the second submodule is used for taking the target population individuals at the current moment as initial population individuals if the evolution times do not meet the threshold value, and skipping to carry out the steps of respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

Optionally, the first module for obtaining the individual evaluation result or the second module for obtaining the individual evaluation result may perform the following steps:

respectively carrying out quantum state measurement on the initial population individuals to obtain individual states corresponding to the initial population individuals;

taking the number of user subcarriers corresponding to the individual state and the user rate as the number of user subcarriers corresponding to the initial population and the user rate;

and substituting the number of the user subcarriers and the user rate into a preset evaluation function, and calculating to obtain an individual evaluation result corresponding to the initial population.

Optionally, the subscriber line data includes spectrum resource bandwidths required by a plurality of users, and the target subband obtaining module 305 includes:

and the initial sub-band obtaining module is used for carrying out carrier aggregation on the target sub-carrier based on the frequency spectrum resource bandwidth to obtain a corresponding initial sub-band.

And the target function construction module is used for constructing a target function corresponding to the initial sub-band by adopting a multiplication value of the sub-carrier bandwidth corresponding to the initial sub-band and a preset decision variable.

And the target sub-band obtaining sub-module is used for determining a target sub-band corresponding to the user line data according to the target function and the preset aggregation data.

Optionally, the preset aggregation data includes function standard data and communication standard data, and the target subband obtaining sub-module may perform the following steps:

judging whether the target function meets the function standard data or not;

judging whether the communication data corresponding to the middle sub-band meets communication standard data;

if not, skipping to execute the step of determining the carrier communication channel and the corresponding plurality of initial sub-carriers based on the user line data.

An embodiment of the present invention further provides an electronic device, where the electronic device includes: the computer system comprises a memory and a processor, wherein a computer program is stored in the memory; the computer program, when executed by the processor, causes the processor to perform the power line communication method based on carrier aggregation as in any of the embodiments described above.

The memory may be an electronic memory such as a flash memory, an EEPROM (electrically erasable programmable read only memory), an EPROM, a hard disk, or a ROM. The memory has a memory space for program code for performing any of the method steps of the above-described method. For example, the memory space for the program code may comprise respective program codes for implementing the various steps in the above method, respectively. The program code can be read from or written to one or more computer program products. These computer program products comprise a program code carrier such as a hard disk, a Compact Disc (CD), a memory card or a floppy disk. The program code may be compressed, for example, in a suitable form. The code, when executed by a computing processing device, causes the computing processing device to perform the steps of the carrier aggregation based power line communication method described above.

An embodiment of the present invention further provides a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the power line communication method based on carrier aggregation according to any one of the above embodiments.

It is clear to those skilled in the art that, for convenience and brevity of description, the specific working processes of the above-described systems, apparatuses and units may refer to the corresponding processes in the foregoing method embodiments, and are not described herein again.

In the several embodiments provided in the present application, it should be understood that the disclosed system, apparatus and method may be implemented in other ways. For example, the above-described apparatus embodiments are merely illustrative, and for example, a division of a unit is merely a logical division, and an actual implementation may have another division, for example, a plurality of units or components may be combined or integrated into another system, or some features may be omitted, or not executed. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection through some interfaces, devices or units, and may be in an electrical, mechanical or other form.

Units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units can be selected according to actual needs to achieve the purpose of the solution of the embodiment.

In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.

The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.

The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A power line communication method based on carrier aggregation is characterized by comprising the following steps:

carrying out carrier aggregation on the target sub-carrier based on the user line data to obtain a target sub-band corresponding to the user line data;

the step of performing quantum coding after the initial subcarrier is subjected to carrier screening to obtain a target subcarrier corresponding to the carrier communication channel includes:

collecting channel environment change data corresponding to the carrier communication channel;

determining a corresponding intermediate subcarrier based on the channel environment change data and the change data corresponding to the initial subcarrier;

respectively carrying out quantum state measurement on the initial population individuals and combining with a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals, wherein the evaluation function is as follows:

wherein,

representing the total transmission rate corresponding to the initial population of individuals,

indicating the number of subcarriers equally allocated to the user,

representing the user rate;

if yes, the intermediate sub-carrier corresponding to the target population individual corresponding to the maximum value of the individual evaluation result at the current moment is used as a plurality of target sub-carriers corresponding to the carrier communication channel;

2. The carrier aggregation-based power line communication method according to claim 1, wherein the step of determining a carrier communication channel and a corresponding plurality of initial subcarriers based on subscriber line data when the subscriber line data is received comprises:

when receiving subscriber line data, determining a carrier communication channel based on the subscriber line data;

3. The power line communication method based on carrier aggregation according to claim 1, wherein the step of performing carrier screening after performing quantum coding on the initial subcarriers to obtain target subcarriers corresponding to the carrier communication channels includes:

4. The power line communication method based on carrier aggregation according to claim 3, wherein the step of performing quantum state measurement on the initial population individuals respectively and obtaining individual evaluation results corresponding to the initial population individuals by combining a preset evaluation function includes:

taking the number of user sub-carriers and the user rate corresponding to the individual state as the number of user sub-carriers and the user rate corresponding to the initial population individual;

5. The carrier aggregation-based power line communication method according to claim 1, wherein the subscriber line data includes spectrum resource bandwidths required by a plurality of users; the step of performing carrier aggregation on the target sub-carrier based on the user line data to obtain a target sub-band corresponding to the user line data includes:

6. The carrier aggregation-based power line communication method according to claim 5, wherein the preset aggregation data includes function standard data and communication standard data; the step of determining the target sub-band corresponding to the user line data according to the target function and preset aggregation data includes:

judging whether the target function meets the function standard data or not;

if so, taking the intermediate sub-band as a target sub-band corresponding to the user line data;

7. A power line communication system based on carrier aggregation, comprising:

a carrier communication channel and initial subcarrier determining module, configured to determine, when user line data is received, a carrier communication channel and a plurality of corresponding initial subcarriers based on the user line data;

a target subcarrier obtaining first module, configured to perform carrier screening after performing quantum coding on the initial subcarrier if the target subcarrier is obtained, to obtain a target subcarrier corresponding to the carrier communication channel;

a target sub-band obtaining module, configured to perform carrier aggregation on the target sub-carrier based on the user line data, to obtain a target sub-band corresponding to the user line data;

the second module for obtaining the target subcarrier comprises:

the second environment change data acquisition module is used for acquiring channel environment change data corresponding to the carrier communication channel;

a middle subcarrier determining module, configured to determine a corresponding middle subcarrier based on the channel environment change data and change data corresponding to the initial subcarrier;

the initial population individual obtaining second module is used for initializing the population based on the intermediate subcarriers and respectively carrying out quantum state coding on the population individuals to obtain corresponding initial population individuals;

and an individual evaluation result obtaining second module, configured to perform quantum state measurement on the initial population individuals respectively and obtain individual evaluation results corresponding to the initial population individuals by combining a preset evaluation function, where the evaluation function is:

wherein,

indicating the number of equally allocated subcarriers to the user，

Representing the user rate;

the target population individual and statistical evolution frequency determining module is used for determining corresponding target population individuals and counting the evolution frequency in real time based on the individual evaluation result and a preset individual standard;

the second module for judging the evolution times is used for judging whether the evolution times meets a preset maximum evolution threshold value or not;

the second submodule is used for taking the intermediate sub-carrier corresponding to the target population individual corresponding to the maximum value of the individual evaluation result at the current moment as a plurality of target sub-carriers corresponding to the carrier communication channel if the evolution times meet the threshold;

and the second submodule is used for taking the target population individuals at the current moment as the initial population individuals if the evolution times do not meet the threshold value, skipping to execute the step of respectively carrying out quantum state measurement on the initial population individuals and combining a preset evaluation function to obtain individual evaluation results corresponding to the initial population individuals.

8. An electronic device, comprising a memory and a processor, wherein the memory stores a computer program, and the computer program, when executed by the processor, causes the processor to perform the steps of the carrier aggregation based power line communication method according to any one of claims 1 to 6.

9. A computer-readable storage medium having a computer program stored thereon, wherein the computer program when executed implements the carrier aggregation-based power line communication method according to any one of claims 1 to 6.